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USA Spec Toyota Bluetooth® Interface

Talk hands-free and stream music in select 1997-up Honda, Isuzu, and Toyota vehicles (Model BT35-TOY)

48 Reviews | 7 questions - 13 answers

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Our take on the USA Spec Toyota Bluetooth® Interface

You never leave your phone at home — so why not have some fun with it when you're on the road? Connect USA Spec's BT35-TOY Bluetooth interface, and you can stream tunes and take calls while your phone stays in your pocket — even if you have a premium JBL factory system in your vehicle.

You never leave your phone at home — so why not have some fun with it when you're on the road? Connect USA Spec's BT35-TOY Bluetooth interface, and you can stream tunes and take calls while your phone stays in your pocket — even if you have a premium JBL factory system in your vehicle.

So let's say you're rocking out to streaming tunes and a call comes in. No problem — the BT35-TOY will switch over to phone mode so you can answer the call. It'll even announce the phone number that's calling. And if your radio is off when a call comes in, the interface will actually turn it on so you can talk hands-free.

Product Highlights:

  • lets you talk hands-free and stream music through the factory radio in select Honda, Isuzu, Toyota, and Lexus vehicles
  • included wiring harness
  • included microphone
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Bluetooth OEM integration module
  • Microphone (with attached 10' cable terminated by a male 3.5mm connector)
  • 59" Vehicle radio harness (CAS-TY35)
  • 9" T-harness (CAS-TA)
  • Owner's Manual
  • Limited Warranty sheet

Excellent product and support. Easy to install and great sound from both the phone and streaming music. This product was installed in a 2001 Toyota Avalon. I really like the fact that the factory radio can be modernized with a simple plug and play system!

Tigertime, Missouri


USA Spec Toyota Bluetooth® Interface Reviews

Average Customer Review(s):

(48 Reviews)


Tigertime from Missouri on 10/26/2015

2001 Toyota Avalon
Crutchfield Customer Review (What's this?)

Excellent product and support. Easy to install and great sound from both the phone and streaming music. This product was installed in a 2001 Toyota Avalon. I really like the fact that the factory radio can be modernized with a simple plug and play system!

Pros: Excellent sound from both phone and Blue Tooth music.

Cons: Customer service was great, but might not have been needed if the instuction of Dip Switch settings was better explained.

USA Spec Toyota Bluetooth® Interface

Matt O from Missouri on 10/13/2015

Crutchfield Customer Review (What's this?)

Easy Install, good directions. When Streaming music the volume must be turned to MAX on the radio and MP3/Phone to even begin to have your music approach loud. If you initiate or answer a call without turning down the volume it can/will blow your speakers as happened to me. Crutchfield credited the product and helped me select a radio replacement to do what I needed. They also helped select new speakers.

Pros: None

Cons: To initiate or answer a call you must remember to turn down the volume from your music listening level or you will blow your speakers. This was not mentioned in any directions, even if it was I consider that an unacceptable performance attribute.

Great Product & Outstanding Service!!!

Nick from Iowa on 9/10/2015

2005 Toyota Prius
Crutchfield Customer Review (What's this?)

This product is wonderful, and I ran it some confusion when installing the product. I called support at 8PM my time (which is amazing) and they answered with little wait time and got me over to tech support. The gentlemen walked me through the issues and before we got off the phone I was talking to the tech agent through the "BT-35 TOY" and could hear him loud and clear through the cars speakers. Calls and music come in crystal clear, AMAZING!!! If I ever need a part or add on for my car I am ordering from Crutchfield, there prices are very competitive and support is absolutely outstanding!!! **5 STARS**

Pros: You can convert an older card to have modern bluetooth system to answer calls and play music to your factory stereo, without upgrading your whole stereo or the car its self.

Cons: Can't think of any.

Easy Install--No more Ear Piece

PaulT from California on 8/31/2015

2011 Toyota RAV4
Crutchfield Customer Review (What's this?)

Easy install with clear sound and excellent operation.

Pros: Microphone works very well.

Cons: None.

USA Spec Toyota Bluetooth® Interface

Anonymous from Statesville, NC on 8/15/2015

2010 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Bought this think it would be great to have Bluetooth on my factory stereo that way I would still have my steering wheel controls. The phone portion works okay. However, the audio streaming from my iPhone sounded like I was listening to music through a tin can. Completely lost all bass and most of the treble. I had to turn the volume up to its max to here it and it still sounded horrible. If you just want it for taking calls hands free it should be fine. But if you will be severely disappointed with the sound quality. Every stereo manufacture can make audio steaming via Bluetooth crisp and clear, just don't understand why they can't.

Pros: Easy install

Cons: Sound quality is terrible

Added new function to my Rav4

DWB from Arkansas on 7/5/2015

Crutchfield Customer Review (What's this?)

Works as described with clear bluetooth reception and responsive steering wheel control. Couldn't be happier. Installed in a snap and worked right out of the box. My only concern is that when updating the Bluetooth from its current version the update will be announced through the system or via email and that rather than accessing the usb port on the device (requiring removal of the dashboard cover) the update will be done through bluetooth instead. We will see. But so far no problems connecting to my iPhone 5.

Pros: Quick install, easy and obvious connection to OEM stereo inputs, well made equipment.

Cons: None so far

USA Spec BT35

Anonymous from CT on 6/30/2015

2007 Toyota 4Runner
Crutchfield Customer Review (What's this?)

I bought the Bluetooth unit for my 4Runner to support hands free calling and music streaming. Due to poor streaming music sound quality, I am returning the device.

Pros: Easy install

Cons: poor audio sound quality when streaming music.

Great Product

jkeys from Massachusetts on 4/19/2015

Crutchfield Customer Review (What's this?)

Overall, I like this product. It was very easy to install. The BT35 works as exactly promised. The one issue I found is that the sound is a bit thin and is lacking in the bass, but that isn't the end of the world. You can always adjust the equalizer to find the quality that you like (or as close to it as you can). I configured my BT35 to work in the SAT function of the stereo. The other issue I found was that I couldn't use the "Mode" button on the steering wheel to get out of the SAT function. Again, this isn't the end of the world, but I thought I should mention it. Overall, this product does exactly what it says it would! Great buy!

Pros: Hands free calling via Bluetooth Easy installation

Cons: Thin Sound/Lack of Bass Can't Get Out of SAT function using steering wheel "Mode" Button (all other functions work as promised)


Eric S from Phoenix, Arizona on 3/16/2015

Crutchfield Customer Review (What's this?)

It works, as designed

Pros: Integrates perfectly


Love it. Another win.

Jeff in Palo Alto from Palo Alto, California on 3/11/2015

2007 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Great unit and easy to install with a little time. Took about 20 minutes including removing a previous add on from the factory radio on my 2007 Tacoma. Works great, it's just as advertised.

Pros: Good value, easy to install, works great.

Cons: It didn't open the package by itself and climb into place.

Excellent Product

RamanB from the Washington, DC Area on 3/5/2015

2006 Toyota Camry
Crutchfield Customer Review (What's this?)

I was looking for a technology upgrade for my old car. Given the new phones in the family, that were in use Bluetooth was the best fit to ensure that upgrade. I have 2006 Toyota Camry LE V6 with JBL (no navigation). The JBL system is AD6809. The installation was smooth except for 2 minor hiccups. 1. The first one was that my car had Curtain airbags (SRS) - the A pillar through which the Mic wiring had to be routed had an airbag. To surmount this, I disconnected my car battery connections and waited for an hour to ensure that any residual charge in any capacitors that may power the airbags have been cleared. The A pillar trim has a small tab (with words SRS airbag) that was easily pried open, revealing a screw underneath that had to be unscrewed. After this, i was able to easily but carefully pull out the A pillar trim. While putting the trim back, you have be careful to ensure that the airbag goes into the nook in the trim. 2. The second hurdle was that the receiver that i had had a 12 pin and a 20 pin connections. The factory wiring was connected to the 20 pin. The adapter has a 12 pin connector which i directly plugged into the 12 pin connector on the receiver (factory wiring not removed). The only caveat to this setup is that i have to change the DIP switches to emulate CDC2 (1-OFF, 2-OFF, 3-ON, 4-ON), instead of the default. This is not in the manual. The USA-SPEC tech support provided this information. Extremely satisfied with purchase.

Pros: 1. Hands free calls. 2. Streaming Music. 3. Phone navigation instructions routed through car speakers.

Cons: 1. Depending upon option in the car, the grunt work might vary. Outside online web sources are your best friend. 2. All scenarios (Options & Models)are not covered in manual. The tech support at USA-SPEC are very knowledgeable and were able to quickly resolve my issue.

Usa Spec Toyota bluetooth interface

Glen from San Antonio , Tx on 2/22/2015

2004 Lexus GX470
Crutchfield Customer Review (What's this?)

I installed this kit with simple hand tools on my wife's 04 Lexus Gx470. The install couldn't have been easier. Simple plug and play connections and its compact size meant I didn't have to try and jam 10lbs in a 5lb sack. My wife who is not electronically inclined in any way has no issues syncing her phone to it for her phone or music. The sound quality is on par with my Ford's Sync system. Well worth the money in my opinion.

Pros: Compact , simple , quality


Good option for older model vehicles

Alex from Sweetwater, TN on 2/12/2015

2004 Toyota Avalon
Crutchfield Customer Review (What's this?)

I installed this in my 2004 Avalon in under 45 minutes. It works as described and pairs easy with my iPhone5s. The microphone for hands-free talking is basically unusable. The echo from in the car and also the fact that it picks up there conversation off the speakers makes it unusable. Poorly thought out design not just on this device but any hands-free device running off a car'e speakers.

Pros: Easy install

Cons: Hands free talking is sub par

Works in a 2006 Limited Tundra

Jeff from MN from Minnesota on 1/20/2015

Crutchfield Customer Review (What's this?)

This product works very well and is very easy to install. On most websites it says it does not work with a 2006 Tundra but I will tell you it works great. I verified the fit first with USA Spec tech line before I purchased. My JBL head unit # is A56830 for future ref.

Pros: Simple to install, less than 45 min if you are somewhat handy.

Cons: Does not work with a Samsung Convoy 3 phone, not the BT35's problem more with the phone.

Unreliable. Good cell function when it works

Lexus ES330 from Riverside, CA on 12/11/2014

2004 Lexus ES330
Crutchfield Customer Review (What's this?)

BT35-TOY on Lexus ES330 proved unreliable in daily use, and I returned it for a refund. Installation was fairly easy. Pulling the stereo out involved a little research online, but was easy once I found the right process. The Bluetooth pairing was simple, and the phone call clarity was very good for the receiver as well as through my car speakers. The music output also worked by simply selecting the AM/SAT button on my head unit, but the music really sounded terrible-so much that I decided not to use it except for podcasts. The real problem was the occasional loss of connectivity. I'd be listening to a podcast when I received a phone call. As I selected the answer key, the stereo would no longer output the sound so I couldn't hear the caller. Trying to select the BT35 with the AM/SAT button on the stereo would only select AM radio. It wouldn't disconnect the Bluetooth entirely as I couldn't hear through the phone either until I manually disconnected Bluetooth on the phone. Trying different things to reconnect it while driving were all met with failure. The only solution was to shut off the ignition after stopping, and restarting the car. This would automatically reconnect the Bluetooth. This failure occurred various times while driving, such as just listening to a podcast without touching either the phone or the stereo. I returned it and went with a straight AUX input adapter (PAC AAI-TY3).

Pros: Easy install, good cell phone voice quality

Cons: Poor music sound quality, unreliable connection


RD from Charleston on 9/27/2014

2005 Toyota 4Runner
Crutchfield Customer Review (What's this?)

Not always compatible with the JBL systems found in 2005 Toyota 4 Runners. The unit will not stay connected and drops off after about ten minutes. I have talked to USA Spec and they confirmed they have an issue with this particular JBL unit model # 56836. You can find this number to the right of the word Toyota that is in the center of the stereo control head. Works great for those ten minutes but the only way to get it to reconnect is to turn the car off and re-start it. The installation for the 4 Runner was a bit more than I was willing to tackle so I had it professionally installed. Ouch now i will have more $$ in installation and removal than the unit's cost.

Pros: Sound is great, and good concept of being able to utilize the existing stereo system when its connected. Which is why a gave it two stars

Cons: Isn't compatible with all systems.

BT35-TOY is worth it

TedATL from Roswell, GA on 9/11/2014

2006 Toyota Sequoia
Crutchfield Customer Review (What's this?)

I had the old USA Spec adapter for my iPhone 4. I broke that one somehow and upgraded my phone to the 5, so I had nothing in the truck for a while. I bought this just so I could hear Sirius through the app and listen to my iTunes library. It hooks up quickly, and the instructions that Crutchfield provides are right on target, as always. The sound is a bit hollow and tinny, but it is good to have access to what I want to hear again. Thinking about replacing the factory JBL amp and speakers to get better sound as it appears that I will be keeping the truck for a while. And will be buying a Bluetooth adapter for my iPod classic so I can use that for my full collection.

Pros: Ease of use, immediate Bluetooth connection, quick and easy installation. Very easy to run and hide mic wire up to center near the rear view mirror. Phone calls are great. No complaints of echo. Much safer than trying to hold the phone while driving. Can use forward and back controls on steering wheel to change discs and songs in iTunes. I have no regrets about buying.

Cons: Seems pricey, but still cheaper than local retailers. One wanted $219 plus installation. Sound is a bit tinny.


Anonymous from Roseville, CA on 9/8/2014

2004 Toyota Tundra
Crutchfield Customer Review (What's this?)

Bluetooth, steering wheel controls worked great! Sound quality poor, no low end(bass) sounded like the music was being played in tunnel. The wired version sounds 10x's better

Pros: Bluetooth

Cons: Sound quality

Simply, a great device to add to you car.

MarioP from Sacramento, CA on 6/11/2014

2005 Toyota Tacoma
Crutchfield Customer Review (What's this?)

After having researched how to properly remove the different parts of the dashboard and A-pillar, the installation and i-phone setup of this device was quick and easy. I have been using this bluetooth interface for a week now and it is performing marvelously. It quickly connects to my iphone as soon as I turn on my 2005 Tacoma, and it disconnects when I turn it off. It switches the radio station/band off as soon as a call comes in. I can connect without a problem and listed to Pandora, Tune-In Radio, or Stitcher Radio. It is just a great device.

Pros: Product performed as described. I will say, it even surpassed my expectations.

Cons: Please, take your time to research online how to remove parts of the dashboard and A-pillar correctly so you don't damage the retainers.

Bluetooth interface on factory stereo

ML from Sacramento,CA on 4/29/2014

Crutchfield Customer Review (What's this?)

Was unable to install double din aftermarket stereo in 2005 Avalon. Had to use Bluetooth interface to play iPhone music. Easy install. Just remove a few panels and plug and play.

Pros: Hands free receiving calls from my phone. Playing iPhone music a plus. Good sound quality. If you are worried about someone stealing an aftermarket deck, this is a good way to go. Can use existing factory deck and gain Bluetooth.

Cons: Since the interface is not a part of the original stereo must press play on phone to start music. If you were able to install new stereo with Bluetooth, music would start automatically every time you turn on ignition. Minor inconvenience but better than having no Bluetooth.

USA Spec Toyota Bluetooth® Interface

Jason k from Cumming ga on 3/30/2014

2005 Toyota 4Runner
Crutchfield Customer Review (What's this?)

Easy installation. It worked immediately. Couldn't be more pleased with it. Especially after some guy at the local store told me I was going to need to buy an entirely new head unit. The one I have is fine. So this was a great alternative! Love the Bluetooth. The sound is good. and the mic picks up my voice pretty well. BT phone talk is very convenient. Great stuff

Pros: Great sound. Easy installation. Bluetooth is extremely convenient. The box hides well

Cons: I really can't find anything wrong with it

USA Spec Toyota Bluetooth® Interface

Anonymous from Charlotte, NC on 3/15/2014

2005 Toyota Camry
Crutchfield Customer Review (What's this?)

Easy to install and works great, voice quality is great!

Pros: Very easy to install and worked right away!


Works great and as advertised

TomS from Peterborough, NH on 2/18/2014

2006 Toyota Avalon
Crutchfield Customer Review (What's this?)

Installed in my 2006 Avalon with navigation and it worked perfectly the first time. Good call quality and decent music at a bargain price. I had tried another, more expensive, BlueTooth adapter that was advertised to work in my car but did not even after trying two units and several re-installations. The USB Spec unit installed in 30 minutes and worked perfectly the first time.

Pros: Easy installation. Works just as advertised.

Cons: Call quality is good but not great. I wish it displayed song titles on my display but wasn't really expecting that.

USA Spec Toyota Bluetooth Interface

Kenbola from North Jersey on 2/16/2014

2007 Lexus RX350
Crutchfield Customer Review (What's this?)

This is an awesome interface. I had it installed professionally. Works sensational. As soon as you get into the car a voice comes on and tells you that you are connected. Phone calls are clear for me and caller. MUSIC sounds very good. Actually sounds better than my installed XM that was but in by the dealer 4 years ago. I have a Lexus RX350. Bluetooth in my car FINALLY without wires and no stupid earpiece. I luv this thing.

Pros: sounds great. works great. invisible. dependable. well thought out product.


Safety First

TimV from Kansas City on 2/5/2014

2008 Toyota FJ Cruiser
Crutchfield Customer Review (What's this?)

I purchased the bt35 toy mainly as a safety issue while talking on my cell phone. The hook up was easy with my factory radio in toyota fj cruiser. I also have existing usa spec iPod control they both work well together. It took some playing around with the dip switches to get it to function properly, but now it works great announces phone calls and as a bonus i can stream any content from my iPhone. Sound quality is great for phone use, due to the fact i have 9 speakers in the vehicle. The streaming audio quality is fair but not near as good as direct wired connection. The unit pairs with my phone automatically which is very convenient. The quality of the unit seems good, people tell me voice quality is good with the supplied mic which makes the purchase good for me. I like the fact fhat i have a stock oem radio that has bluetooth. iPod control and satellite radio. Buy this if you like your stock set up. It will modernize the features on older model cars. Crutchfield was great to deal with, prompt, efficient, fast shipping and great customer service.

Pros: Safety, easy install, feature set

Cons: none

Works, but not well

Charles M. from Chicago area on 1/23/2014

Crutchfield Customer Review (What's this?)

First of all, installing this thing is not for the faint of heart. Professional installation recommended. Secondly, heed the reviews: The sound is crappy. In a 2007 Prius, all sound funneled through this device has a phasing problem. Calls to USA Spec brought confirmation that the company "knows there's a problem." But it had no fix and said none is in the works. That said, the device does allow Bluetooth connections and hands-free operation of some functions (like answer call, hang up, next track and previous track). But it doesn't let you STOP playback remotely. So your Pandora or Rivet app keeps playing even if you switch to AM or FM or turn the car radio off. If you want Bluetooth in your Prius and don't want to buy a whole new radio, this seems to be the best choice.

Pros: It works, kinda and seems to be the best of a bad lot of products.

Cons: It doesn't work well.

Very pleased. 2005 4Runner LTD JBL.

Mike from New Jersey on 1/18/2014

2005 Toyota 4Runner
Crutchfield Customer Review (What's this?)

My wife wanted to be able to stream audio from her iPhone 5 and also have hands free calling. She was not looking for all of the fancy features that some of the newer head units have. The BT-35 was the perfect solution. It works great and has added some modern technology to an older stereo with a simple plug and play device. Be sure to follow the easy instructions and disconnect the battery as instructed before installing. I decided to skip this step and the device would work for 10mins then cut out. After restarting the car it would do the same thing again. Called tech support and found that disconnecting the battery is needed for the ECU to accept the new device.

Pros: Old stereo now has modern features. Easy to install. Easy to pair. Works with steering wheel controls.

Cons: Really can't think of any negatives. I'm very pleased with this product. 130.00 and my wife can stream audio, make hands free calls and I'm a hero. What more could I ask for.

Great product

Ruku from Lancaster, pa on 1/16/2014

2005 Toyota Sienna
Crutchfield Customer Review (What's this?)

Great product. I was hesitant in buy this due to other reviews concerning volume issues between taking calls and music. I was pleased that there was no noticeable volume issue. Easy to install and integrate with iPhone 2005 Toyota sienna

Pros: Works with steering wheel controls. Sounds great, works great

Cons: None

Easiest way to add bluetooth to your car!

Paul from Woodbridge VA on 1/4/2014

Really pleased with the product, couldn't be easier to install (literally just connect one wire and is ready), great sound quality, and I love that I can control my Iphone from with the factory radio buttons! I made my homework and this gives you the best bang for your buck!

Pros: Easy to install , great sound quality. It just works! And the Crutchfield service is excellent, as always.

Cons: None.

Easy to install and easy to use!

Peter from California on 8/15/2013

2006 Toyota Avalon
Crutchfield Customer Review (What's this?)

I installed the USA Spec Toyota Bluetooth devise in my Toyota and it only took about 15 minutes from start to finish, including wiring the antenna to the rear view mirror. and I must say that I am impressed. The sound for streaming music is great and the device controls in the car interface well with the Blue tooth as they said it would. It does not drop the signal or disconnect from the phone at all. I would recommend this device to anyone considering installing an after-market Bluetooth interface.

Pros: Easy installation, programs easily, and works well and consistently.

Cons: None that I can find so has performed as advertised

USA Spec Toyota Bluetooth® Interface

Anonymous from East Greenbush, NY on 7/24/2013

2007 Toyota RAV4
Crutchfield Customer Review (What's this?)

It was easy to install and works great for phone calls - my android phone connects reliably and the controls work as they are supposed to. However, the audio quality when using wireless audio streaming is terrible. There is an annoying echo sound that makes listening to podcasts very unpleasant. I have given up on using for this purpose. It is very disappointing for the price. If I were to start again, I think that I would have just spent the money to buy a new bluetooth enabled radio to replace the factory radio.



Awesome product, gives an old vehicle new life

Eugene S. from Arlington Heights, IL on 6/6/2013

1998 Toyota 4Runner
Crutchfield Customer Review (What's this?)

Installation was a breeze. The bluetooth module worked perfectly as I imagined it would. I listen to mostly podcasts so this is perfect for me. Some people have said that the music quality isn't as good as a direct connection type of solution, but to be honest, I think the audio quality is fine. It could be because I still have the stock speakers which aren't great to begin with, but I felt the audio quality was pretty good. The hardest part of the installation was routing the microphone (for voice calls) to the headliner, but I just tucked it away between interior panels in my SUV. Not hard at all, just the part that took me the longest to do. I have a 1998 4runner and it feels like I've given my SUV new life.

Pros: Ease of installation, ease of use, very reliable

Cons: None, really.

Music quality is Not good.

RockyChicago from Chicago, IL on 5/10/2013

2004 Toyota Sienna
Crutchfield Customer Review (What's this?)

I was excited about this product. It seemed to be everything I wanted. The installation took maybe 20 mins, which is great (if you have the right tools at least). Here's the problems: The sound quality is poor. During a phone call the volume on the stereo had to be cranked way up (the phone volume was on max) and there was some distortion. On music playback the quality was just terrible. I mean no lows and the overall sound was hollow and echoed. My Samsung S3 was what was connected. My wifes iphone was a little bit better but not much. The sound quality for the price is a deal breaker, at least in my car anyway (2004 Sienna).

Pros: Easy installation, connects easily.

Cons: Poor sound quality on calls and music is a deal breaker.

2007 Lexus GS350. Works well, easy to install, but...

tom m. from phoenix, az on 4/7/2013

2007 Lexus GS350
Crutchfield Customer Review (What's this?)

Ok so I watched a youtube video of how to take the radio out of my 2007 Lexus GS350 and it took me literally 10 minutes to do it! sweet. I installed the BT interface which functions as a second CD player in the car and it worked immediately after syncing with my phone. Sound quality is as good as my CD player. I simply max out the sound on my iphone and then adjust via the volume controller in my car (steering wheel or radio). you can turn off audio cues by the device by simply pressing "scan" on your radio. You can accept calls and return to your audio without a problem but there is a minor cons below.

Pros: relays sounds through your car's audio as promised. The sound quality is equal to my CD player and I haven't had any issues with volume limitations. I can turn it up as much as my ears can take.

Cons: 1- the device is supposed to connect automatically every time you get in your car but it doesn't. sometimes it does and sometimes I have to manually connect through my phone's bluetooth setting menu. 2- when a call comes in, it doesn't connect to my car's inherent bluetooth mic and instead connects to its own mic which you would have to wire in the car. alternatively, you can just talk on the phone itself without bluetooth connection, or disconnect the phone from the BT interface device.

BT-35 TOY --- Great Bluetooth Product!

lmjyahoo from Erlanger, KY on 1/4/2013

2007 Scion tC
Crutchfield Customer Review (What's this?)

The BT-35 TOY is a 5-STAR PRODUCT! 1) Even with the holidays, shipping was very quick. 2)Installation start to finish in my 2007 Scion tCwas less than 1/2 hour. 3)The MasterSheet for the specific vehicle is very helpful and the installation instructions for the device are great. 4) The unit works just like it is decribed AND the steering wheel controls fuction perfect without any additional wiring harness. 5) Unlike other reviews, music streaming from my Iphone sounds great! I just received and installed the BT-35 TOY in my car this afternoon and am very glad I went with Crutchfield. As opposed to sellers on Ebay, etc, Crutchfield INCLUDES all wiring harness needed, PLUS the vehicle specific MasterSheet, Plus a 60-day return policy, PLUS a one-year warrenty. Much less expensive than replacing the Factory Stereo. In my tC any aftermarket head unit cannot connect with Factory Subs, and there is an additional wiring harness to allow the steering wheel controls to fuction. I wanted hands-free Bluetooth through my car speakers and now I've got it! Great Product!

Pros: Easy Install Great sound (calls and music streaming) Much less expensive than replacing an all ready great system just to get Bluetooth. My head unit does not have texting capability, however incoming phone numbers ARE displayed! Didn't expect that.

Cons: The ONLY negative with the BT-35 TOY (as opposed to my wife's Factory Bluetooth Head Unit) is you have to make the call from your phone and then the Bluetooth takes over. There are no speed dial keys or address book to pick from off the head-unit. After a call you then have to manually switch back to whatever funtion (AM/FM/CD) you had before the call. However, I was aware of all this prior to purchasing the BT-35 TOY and am very pleased with it.

Instructions could be Clearer

AndyG from Arlington MA on 12/26/2012

2004 Toyota Highlander
Crutchfield Customer Review (What's this?)

Just installed this and it seems to work fine (2004 Toyota Highlander, base radio/CD changer). But it took me an hour longer to install than it really should have. The instructions give two possible options for connection to the radio: a) Use the included 'Y' cable and hook one of the existing female connections to the male part of the 'Y', plugging in the female part of the Y into the radio in place of the existing female connection. b) Don't use the 'Y' cable at all and plug directly into an exiting (presumably open) radio connector. What they don't tell you is one other option: c) Use only the female leg of the 'Y' connector to plug into an exiting open connection on the radio, leaving the male leg dangling. This would have been obvious had one been able to get a clear view of the back of the radio -- but unless you disconnect all the wires -- you don't get a clear view. Hence, I couldn't see that I had an open connector slot that would fit. All I knew was that none of the existing 3 female wiring bundles matched any of the provided BT-35 connectors. Hope this saves someone some time.

Pros: Seems to work. Can't yet comment on voice quality (mic mounted on windshield near rear-view mirror). Paired easily with Alcatel phone. No loss of CD functionality.

Cons: Wish the directions mentioned that one leg of the 'Y' may not be needed.

Weak Signal

JS from Sunnyvale, CA on 8/30/2012

2006 Toyota Tacoma
Crutchfield Customer Review (What's this?)

From a technical perspective, it does what it says. It interfaces, via Bluetooth, with an iPhone and allows music playback as well as hands free calling. Installation was super easy if you can twist a screw driver. Where it falls severely short is in the sound quality for music playback. To achieve normal listening levels, the volume must be turned up 40% more as if the signal is insufficient. Furthermore, the lower frequencies are weaker than the mids and highs making it seem like you are listening to music through a telephone. No amount of bass increase on the stereo or iPhone is sufficient. I am about ready to return this product and put the PA-15 wired solution back in that did not have poor sound performance. For reference this is in a 2006 Toyota Tacoma with the JBL sound system with the BT35 configured either as SAT or CD1 version 1.0b17t.

Pros: Does indeed interface with an iPhone 4+ via Bluetooth...

Cons: Low volume, no bass, weak signal. I contacted their support number and got a "well, it's just kinda going to be like that, probably..." followed by a big giant shoulder shrug....

Good for calls, not great for music

Jay from Chicago on 8/27/2012

2001 Lexus RX300
Crutchfield Customer Review (What's this?)

I have a 2001 Lexus RX300 without premium audio/navi. This product installed super quick - no finding wires, no cutting or splicing. Just plug and play. It found my phone (iphone 4) right away, and connected without issue. Everyone says they can hear me loud and clear when making calls, and they sound great as well. The audio streaming is a nice feature, but the audio quality is sub par. I find that the cassette adapter produces a much higher quality audio than the bluetooth streaming. Overall, great product if you need to make bluethooth calls.

Pros: Call quality. Ease of installation.

Cons: Audio streaming

Great value and product.

Sierraoaks from Shell Beach, CA on 8/20/2012

I have tried many different approaches to BT in my 2010 Toyota FJ Cruiser, all very disappointing until I installed the BT-35. Works like clockwork every time I turn on the ignition. The integrated volume as well as the track up and phone answer from the steering wheel is GREAT. Maybe my ear is not what it used to be, however I thought music sounded wonderful and audio books are the best. Installation was easy and mike placement next to the gauge array works fantastic. I just ordered one for my son for his birthday. Great Buy

Pros: All is great!

Cons: No cons considering the alternative, no BT.

Installs easily, music sounds awful

Devon from Alexandria, VA on 8/16/2012

2005 Toyota Highlander
Crutchfield Customer Review (What's this?)

The installation for this adapter was very easy, just pull the dash unit, plug this unit into the back and you're done. 10 minutes if you know how to pull a stereo. The receiver consistently pairs automatically with my Galaxy Nexus, and the Track up and Track down buttons control the Music app, and Track up skips to the next song on Pandora. That's very convenient, and much easier than fumbling with unlocking my phone just to change tracks. However... What affects me more (and the reason I bought the adapter) is music sounds terrible through this adapter. I don't know if it's the case for all bluetooth systems or not, but the sound quality reminds me of the advent of MP3s (remember 32kbps files). Everything high end gets tinny and the sound as a whole gets a mechanical quality to it. This is especially true for classical music, but I can even hear the lot bit-rate chop in my heavy metal. And I'm not hearing this through a $4000 hi-fi system. This is apparent even through the inherent muddiness of factory paper cone speakers. There are people that won't notice the difference, but I'd say about 50% of people won't be satisfied by the sound quality of this transmitter. The included mic is as bad as every other mic I've heard. They all sound like you're in a bathtub. From what I can tell there is no place to hard-mount a mic that won't transmit a ton of road noise and echo. I'm okay with that, I don't use the Bluetooth for phone calls anyway so it doesn't affect me.

Pros: Easy Install Factory Track Up/Down works with My Music and Pandora

Cons: Sound Quality Sound Clarity Microphone Sound Quality

Not compatible with certain Toyota Vehicles with Rear Seat Entertainme

TimG from Bend, OR on 7/27/2012

2003 Toyota Sequoia
Crutchfield Customer Review (What's this?)

A little slip of paper inside the manufacturer's instructions, "Note 4 Revisions" explained how many of the features would NOT WORK with certain Toyotas with Rear Seat Entertainment. 98-06 Tundra, 02-17 Sequoia, 98-95 4runner, 01-06 Highlander, 98-05 Sienna. Crutchfield did not ask if I had this option on my Sequoia. The install instructions weren't correct as the unit had to be installed in a different place - found out AFTER installing as Crutchfield instructed. I really liked the non-bluetooth model I installed in another vehicle. This BT model sounded awful and important features didn't work (for my car). Glad I bought it from Crutchfield as a full refund is coming with the return.



Pretty good way to add bluetooth streaming to older vehicles

brianw13a from Toledo, OH on 4/22/2012

2003 Lexus RX300
Crutchfield Customer Review (What's this?)

Overall I'm really satisfied with this product. The call quality was excellent and I was pleasantly surprised at how good the music quality is. It was easy to install and get connected with my Android phone. The only cons I have is that on occasion it will drop audio (music) for a split second which I didn't have with the same phone and a factory stereo. The voice annunciation is a little annoying but I've heard rumors that it can be turned off. I have yet to find any documentation on that. Installation instructions where pretty good and I think I had it completed in under 2 hours - maybe an hour as I really wasn't paying attention. I was instructed to purchase the CAS-TLC which I suspect was used to allow both the CD changer and the BT35 to function. I found that the with the CD player connected that the BT35 would not work correctly and since I haven't touched a CD in years I decided to just disconnect the CD player. Having done that, I don't think I needed that cable as the BT35 would have connected directly to the factory stereo.

Pros: Great sound quality. Easy installation.

Cons: Voice annunciation, dropped music frames. In my case the directions called for a different cable which I purchased separately (CAS-TLC) - not sure it's needed for my installation.

The product works, but music sound quality, lacking

kdogg from Dallas,tx on 3/30/2012

Crutchfield Customer Review (What's this?)

I was excited about ordering this product. I have not had any experience with bluetooth music streaming, but I figured it was worth a shot. The product was easy to install. Took me about 30 minutes. I had to find my own solution for installing the mic up the "A pillar" ; however, found a solution online. Back to the sound quality. I can tell you that you can hear your songs. It is a nice feature to have, but the bluetooth A2DP is just not ready for prime time. I was integrating with an iphone 4s, so I know that the streaming software on the 4s , should be the latest and greatest. I used the factory dips on my 99 4runner. I called the makers of the bt35-toy and talked to one of their tech guys. I asked him if the quality is just 80% or if there was something I should do. He mentioned upping my iphone4s volume, but that is not it..... I just think the quality is what it is.

Pros: The hands free calling works well. I can request iphone 4s siri commands through the mic and call out songs to play.

Cons: The product works as designed, although sound quality (for music A2DP, is lacking in sound quality, especially at the top range).

Works great after some effort

Frank from West Windsor, NJ on 3/19/2012

2005 Toyota Sienna
Crutchfield Customer Review (What's this?)

Ordered this for a 2005 Toyota Sienna XLE limited with JBL sound, NAV, and rear seat entertainment. Phone is an IPhone 4S I had some problems with this install but after working with USASPEC it is now working great. Things you need to know: (1) You don't need the CAS-NIS_EXT cable (instruction manual Page 4). They have now changed the instructions. You install the BT35 in the rear of the car, and extend the mic cable to the front (2) The BT35 I got from Crutchfield was incompatible with my car. It was build number 1.0b7 - radio would not see it USASPEC sent me a BT35 with build number 1.0b17 - works fine (3) I used dip setting 3 + 4 on My radio sees the BT35 as a CD changer. The factory CD and DVD are unaffected (4) You can find the ECU by removing the right rear cup holder and storage bin. The bottom half of the ECU is visible behind the opening I found that easier than removing the panel. The socket you want is on the left side, bottom socket. Remove the bottom bolt for better access. Remove the courtesy light panel by the floor to snake the mic wire. I velcro'd the BT 35 to the ECU to keep it from rattling around

Pros: Provides an elegant solution for integrating the iphone with the car radio. Can be controlled by steering wheel controls and radio buttons USASpec support was very helpful, both by phone and email.

Cons: Took me quite a while to get it working. Text display doesnt show music titles Phone interaction seems to time out if it takes too long to set up the phone call. For example, if trying to voice dial with Siri it seems to say 'call ended' while I am still trying to establish a call.

Bluetooth interface module

Anonymous from Powhatan, VA on 3/11/2012

2003 Toyota 4Runner
Crutchfield Customer Review (What's this?)

Works as advertised and was straightforward to install.



2007 Highlander Hybrid Limited w/JBL w/nav

Justin from Portland, OR on 3/3/2012

2007 Toyota Highlander
Crutchfield Customer Review (What's this?)

I hesitate to rate this product because, although it wasn't compatible with my system, it appears to be a quality product. I bought this to add Bluetooth connectivity to my wife's' 2007 Toyota Highlander Hybrid Limited. The factory unit comes in two double-din pieces, one for the cd/cassette, and one for the touchscreen that integrates display of the nav/audio/climate control/hybrid info. This integrated system is impossible to upgrade without loss of functionality to something. So, in an effort to [at the very least] add bluetooth connectivity, I purchased the BT35-TOY. Unfortunately, this unit would not function properly, regardless of the various jumper setting recommendations in the setup materials. Pairing the unit with my DroidX was easy, but use of the phone was impossible beyond that. On the most functional jumper setting, I was able to get the stereo to let me place a call, but I couldn't hear the recipient, and, the ignition had to be cycled in order to get stereo functionality back. Rosen used to make a unit for this car, but no longer.

Pros: Easy installation with Crutchfield's instructions. Simple to configure. As always, Crutchfeild is a class act, they deserve our business.

Cons: Didn't function with my particular head unit, but don't let that deter you if yours is different. Unit had a USB jack, but no instruction of its functionality in the product manual.

Crutchfield response on 6/12/2013 We do not list this product for that vehicle.


Shannon from Burlington, NJ on 2/24/2012

Crutchfield Customer Review (What's this?)

This device is really neat. I get in my car and it connects. The voice says connected... If I have Pandora already loaded...I push the up button and it starts playing. If I get a phone call it comes up automatically. The reviewer ahead of mine was complaining about the voice saying connected. You can turn audio prompts off on the system.

Pros: Very easy to install. Easy to use. Works good.

Cons: Sound quality could be better.

BT35 TOY in a 2007 Tacoma

Mike from Albuquerque, NM on 2/7/2012

2007 Toyota Tacoma
Crutchfield Customer Review (What's this?)

Works great in my 2007 Tacoma. Paired up to my Droid Incredible the first try, and connects automatically every time I start the truck. Incoming calls display the last 9 digits on the factory radio, and the accept/reject function works from the up/down seek buttons on the steering wheel controls and the front of the radio. Call quality is fine, but as with any bluetooth or hands-free setup, it takes a bit of testing to get the volume set right to avoid too much echo on the other end. Audio streaming sounds nice and clear, and I love being able to advance tracks from steering wheel and radio seek buttons. This works for mp3 playback as well as streaming Pandora.

Pros: Easy install, works just as described, and no more wires!

Cons: Little voice says "connected" each time I start the truck. I like that my phone connects every time like it's supposed to, but the voice telling me will probably get annoying after a while. Overall, that's my only minor complaint.


Hands-on research

Product Research


Overview: The USA Spec BT35-TOY is a Bluetooth Phone & Music Interface for select Toyota, Lexus, and Scion vehicles (with or without JBL factory systems). The BT35-TOY lets you add Bluetooth hands-free communication and wireless music streaming to your compatible vehicle's factory radio. The USA Spec BT35-TOY includes a hide-away module, external microphone, radio harness, and T-harness.

Wireless Audio Streaming: The BT35-TOY supports Bluetooth Profiles A2DP and AVRCP for wireless audio streaming from a Bluetooth enabled device that can also be controlled from the buttons on your vehicle's factory radio or steering wheel. You can stream music stored on your Bluetooth enabled device or stream music apps (such as Pandora, SiriusXM Radio, iHeartRadio, etc.) that are playing on your Bluetooth device to your vehicle's sound system (all speakers will play). You can even skip tracks from your vehicle's factory radio steering wheel controls (other control functions will have to be done from your Bluetooth enabled device). You can control the volume of the music being streamed via your factory radio and steering wheel controls, or the Bluetooth device.

Note: Your Bluetooth enabled device must also support A2DP for audio streaming through your vehicle's sound system and AVRCP to control the Bluetooth device from your vehicle's radio or steering wheel controls.

Hands-Free Communication: The USA Spec BT35-TOY supports Bluetooth Profile HFP for hands-free communication from your Bluetooth enabled mobile phone, so you can take (answer/end) phone calls through your vehicle's factory radio. Your music will be muted and an audible ringtone will be heard through your vehicle speakers when there is an incoming call. The BT35-TOY will automatically switch to Bluetooth mode when there is an incoming call (even if your factory radio is turned off). The BT35-TOY uses advanced technology to turn your radio on and switch to the correct source to help you never miss a call while driving again. You can even have the BT35-TOY announce the caller's phone number through your sound system; and for most text-capable radios if you miss the announcement, you can view the caller's phone number on your factory radio's display (some text capable radios will only list 8 or 9 digits of the phone number).

Note: You will continue to use your mobile's phone touchscreen or keypad to make calls. The BT35-TOY only allows you to answer/end calls from your factory radio or steering wheel controls. Once you make a call from your mobile phone, you can carry on the conversation hands-free through the included microphone and your vehicle's factory sound system.

External Microphone: The USA Spec BT35-TOY includes an external microphone to carry on your side of the conversation (the caller's voice will be heard through your vehicle's speakers). The external microphone provides better performance in noisy environments than the integrated microphone found in many factory or aftermarket head units. The microphone is fitted with a 10' cable terminated by a 3.5mm connector that connects to the BT-35-TOY module. The microphone features an integrated, self-adhesive mounting bracket to mount the mic to your dash or windshield.

Note: The microphone measures 0.625" (w) x 0.8125" (h) x 1.25" (d).

Bluetooth Compatibility: USA Spec is currently working out a list of fully compatible devices. The current list of successfully tested devices include the iPod touch (3rd/4th gen), iPhone (3G/3GS/4/4S/5), iPad (1/2/3), Android G2, Galaxy, HTC MyTouch, Desire, and Sony Ericsson W518a (as of 9/26/2012). You will initially need to pair your Bluetooth device with the BT35-TOY, before operation. The BT35-TOY can pair up to 8 devices, but will only connect to 1 device at a time.

Note: Due to the differences in Bluetooth technology, some Bluetooth enabled devices may be incompatible, function improperly, or may not support all features when used with the USA Spec BT35-TOY. Please refer to the USA Spec website for the latest compatibility listings.

Vehicle Compatibility: The USA Spec BT35-TOY is compatible with select 98-2012 Toyota, Lexus, and Scion vehicles with or without JBL factory systems (as of 1/18/2012).

Make Model Year
Toyota 4Runner 1998-2011
Avalon 1998-2010
Camry 1998-2011
Celica 1998-2006
Corolla/Echo 1998-2011
FJ Cruiser 2007-2011
Highlander 2001-2011
Land Cruiser 2002-2009
Matrix 2005-2011
Prius 2004-2011
RAV4 1998-2011
Sequoia 2002-2012
Sienna 1998-2011
Solara 1998-2010
Tacoma 1998-2012
Tundra 1998-2012
Venza 2009-2011
Yaris 2007-2011
Lexus ES 300/330/350/400H 2002-2010
GS 300/350/430/450H 2005-2009
GX 470 2004-2009
IS 250/300/350 2001-2009
LS430 2001-2006
LS460 2007-2009
LX470 2002-2008
LX570 2009
RX300/330/350/400H 2000-2009
Scion xA, xB 2004-2010
tc, xD 2005-2010


  • For Toyota:
    • 1998-2002 Camry, Corolla, Echo, Sienna also require the USA Spec CAS-TLC adapter cable (581CASTLC, sold separately).
    • 2002-2004 Land Cruiser also requires the USA Spec CAS-TLC adapter cable (581CASTLC, sold separately).
  • For Lexus:
    • 2002-2003 ES 300/330/350/400H, 2001-2006 LS 430, and 2002-2008 470 also require the USA Spec CAS-LEX adapter cable (581CASLEX, sold separately).
    • 2000-2003 RX300 also requires the USA Spec CAS-TLC adapter cable (581CASTLC, sold separately).
  • Please consult Crutchfield's Outfit My Car for your vehicle's specific compatibility.

Dip Switches: There are 4 dip switches that will need to be configured to match the make, model, and year of your compatible vehicle.

Installation: The USA Spec BT35-TOY plugs into the back of your Toyota, Lexus, or Scion factory radio. The factory cable gets unplugged from the factory radio and the included T-harness (CAS-TA) takes it place on back of the factory radio. Then the factory cable and the interface harness (CAS-TY35) plugs into the T-harness. The interface harness also plugs into the USA Spec BT35-TOY. Finally, connect the external microphone to the BT35-TOY's mic input and mount the microphone to your dash or windshield.

Note: An additional USA Spec adapter (sold separately) may be required to install the BT35-TOY in some Toyota, Lexus, and Scion vehicles.

USA Spec iPod Interface Compatible: The USA Spec BT35-TOY works with other USA SPEC interfaces, such as the PA15-TOY or PA20-TOY (sold separately). They simply daisy chain together.


Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I travel a lot and Maryland has strict cell phone laws. The Bluetooth will be an added benefit. In addition to that, I will be able to stream the music I want. [ DAVID  Jan 18, 2016 ]

7 questions already asked

For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Aug 05, 2015 ]  Staff
Yes, it worked on ours, only you have to have the console on the cd settting to use the blue tooth. The steering wheel controls still work for radio and work for the blue tooth when the cd setting is on. The only thing is you cannot play a dvd and use the the blue tooth at the same time. Also you can no longer play cds once its installed. However, while on the bluetooth setting you can stream music from your phone which we enjoy. Not perfect, but has worked great for our needs. We installed ourselves by watching a you tube video. Took us about 2 hours [ LouAnne  Aug 02, 2015 ]
I installed this product in a 2008 Toyota FJ Cruiser. The install was easy enough as far as plug-and-play, however the sound quality of the Bluetooth connection left something to be desired. The cabled aux input sound quality was substantially better than the Bluetooth sound. The Bluetooth sound quality was very "Tinny" and the depth of music with bass and treble were both sacrificed. If you're buying it for just the hands-free phone operation, I would say go for it. But if it's for music, don't bother. [ Jonathan  Jul 26, 2015 ]
This is not relevant to me. [ Rodney  Jul 21, 2015 ]
Randy, I have the same Sienna that you do and I have installed this product in it. Frankly, installation was a breeze and it works great. I would recommend having a look at YouTube for some tips on Sienna installation, but the bottom line is that the main unit is installed in the back right side of the vehicle. The only challenge is that you have to run the microphone cable from the front of the van back to the main unit, but that isn't difficult at all. You will need an extension for the microphone cable, though, and those can be picked up anywhere including Radio Shack. I'm very happy with this setup and bought another one for my Lexus RX300. Good luck with the's a piece of cake!! [ Mark  Jul 21, 2015 ]
Hello Randy. I installed this device on my 2005 Toyota Tacoma back in 2014 and it worked perfectly. Now, I can listen to Pandora, Stitcher Radio, Tune-In, and any other audio app I have in my smart phone. Crutchfield sent me all the printouts necessary for the installation for my particular car model. However, I also viewed over and over videos posted on YouTube -- I found one for your particular vehicle and model trim. It took me half a day to install it because I have never done anything mechanically and because I did not want to break any small piece of my dashboard mechanisms or incorrectly put the dashboard back in place. [ MARIO  Jul 20, 2015 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you. [ Greg  Jul 20, 2015 ]  Staff
The ability to retain steering wheel controls with aftermarket receivers will be determined by the receiver you are using and the vehicle you have. For full information on this type of integration (including the parts you will need) please contact an Advisor by phone (1-800-324-9695) or online chat. [ Jeff  Jul 20, 2015 ]  Staff
It is not for a iPod cable. [ JAMES  Jun 26, 2015 ]
To only update software. I used my interface to Bluetooth stream my music... [ JASPER  Jun 26, 2015 ]
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Apr 10, 2015 ]  Staff
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Apr 05, 2015 ]  Staff
Thanks for your question. I would recommend reaching out to an Advisor by phone or online chat. They will be able to help determine if this will work and help you make the best choice for your system and your budget. If it does not, then they will also be able to discuss other options with you. [ Jeff  Dec 23, 2013 ]  Staff