Contact us
Close contact box

USA Spec BT45-ACU

Add Bluetooth® capability to 2005-09 Acura with Live Traffic

Item # 581BT45ACU

You love your Acura and its Live Traffic feature, but you really want the convenience of Bluetooth.

Find what Fits your car

You love your Acura and its Live Traffic feature, but you really want the convenience of Bluetooth.

Need help?
Contact our Virginia-based experts.
1-888-955-6000
5 advisors available

Item # 581BT45ACU

Ships free

In stock

$219.99 -$40.00 Price break

$179.99
Add to wishlist

About the USA Spec BT45-ACU

Add Bluetooth to your Acura

You love your Acura and its Live Traffic feature, but you really want the convenience of Bluetooth. USA Spec designed the BT45-ACU adapter for 2005-2009 Acuras with TrafficLink, and the package includes everything you need to install it in your vehicle. It allows your Acura's radio to communicate with any Bluetooth-enabled devices with A2DP audio streaming. You can stream audio from your favorite phone apps (including games), and you'll be able to handle phone calls using the radio's controls or your steering wheel buttons.

Add Bluetooth to your Acura

You love your Acura and its Live Traffic feature, but you really want the convenience of Bluetooth. USA Spec designed the BT45-ACU adapter for 2005-2009 Acuras with TrafficLink, and the package includes everything you need to install it in your vehicle. It allows your Acura's radio to communicate with any Bluetooth-enabled devices with A2DP audio streaming. You can stream audio from your favorite phone apps (including games), and you'll be able to handle phone calls using the radio's controls or your steering wheel buttons.

The adapter also includes a 2.1-amp USB charging port as well as an auxiliary input for other non-Bluetooth audio devices. It supports text display so you'll see song and artist info on your factory radio.

Don't miss a call

With the latest in Bluetooth technology, the BT45 gives you great sound and works seamlessly with the vehicle's existing audio sources. You can carry on a noise-free conversation in almost any environment, and USA Spec's technology gives you the best possible sound quality. The built-in auto-mute function makes sure you never miss a call.

READ LESS

Highlights:

  • lets you talk hands-free and stream music through the factory radio in select Acura vehicles
  • includes wiring harness and microphone
  • auto-mute keeps you from missing a call
  • USB charging port
  • auxiliary input for non-Bluetooth devices
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # BT45-ACU

What's in the box:

  • Add-on Bluetooth interface module
  • Microphone (w/ attached 16' cable terminated by a 3.5mm connector)
  • Vehicle/Interface harness (CAS-ACU)
  • Owner's Manual

Customer reviews

Loading reviews...

USA Spec BT45-ACU reviews

Average review:

17 reviews

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Better than Factory Acura BT.

Crutchfield customer from Alpine, UT on 7/5/2019

Verified customer (What's this?)
Verified employee purchase (What's this?)

Easy to install, worked great from the get go. Call are crisp and clear. Track and volume controls on the steering wheel work great. Better deal and performance than a factory BT from Acura.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

USA Spec BT45-ACU

Crutchfield customer from Anaheim, CA on 5/20/2019

2009 Acura MDX

Verified customer (What's this?)
Verified employee purchase (What's this?)

Easy installation (plug-n-play)! The most time consuming was routing the mic to the front, other than that, everything is working great. I wish I knew about this sooner!

Pros: Once the phone has been linked, connects to phone automatically as the car starts. The music streaming and calling feature is great! The steering wheel buttons will function with device.

Cons: Nothing so far.

Crutchfield response on

0 of 0 found this helpful

USA Spec BT45-ACU

Crutchfield customer from Kansas City, MO on 1/27/2019

2008 Acura 3.2TL

Verified customer (What's this?)
Verified employee purchase (What's this?)

Easy to install, works seamlessly with manufacturers radio and navigation system

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Bluetooth add on

Roy from Plainfield, IL on 12/27/2018

2008 Saturn VUE

Verified customer (What's this?)
Verified employee purchase (What's this?)

2008 Acura RL. installation was straightforward and worked awesome. All of the song info was on the factory display and worked with the steering wheel controlled.

Pros: Easy install and worked as described.

Cons: Non

Crutchfield response on

0 of 0 found this helpful

USA Spec BT45-ACU

Crutchfield customer from Upper Darby, PA on 12/8/2018

2008 Acura 3.2TL

Verified customer (What's this?)
Verified employee purchase (What's this?)

I love the BT45-ACU it works great in My 08 Acura TL, installation was easy connecting is fast.

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Sweet Bluetooth!

Caleb A. from Kailua Kona, HI on 10/5/2018

2007 Acura MDX

Verified customer (What's this?)
Verified employee purchase (What's this?)

Great product. Easy to install, and it connects to your phone very quickly..!

Pros: Everything else.. sweet

Cons: Connection was in the trunk. So it was a long microphone run.

Crutchfield response on

0 of 0 found this helpful

Great Product! Brought my car back to life.

Crutchfield customer from Accokeek, MD on 8/27/2018

2005 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

The product is really great! I have an RL 05 and because of the location of the XM radio on the left you do not need to remove the trunk liner to install the product. It is a Y cable remove connector from XM replace with male connector and plug original connector into the female connector on the Y cable. important! wait for click. I returned the first one thinking this was not for me but the next one came and I heard the "click" sound when connecting this time and saw it show up on my phone then the voice said "connected". That's it! I love it brought my car back to life.

Pros: Easy to configure yourself for my vehicle RL 05. Instant results. Very clear sound.

Cons:

Crutchfield response on

1 of 1 found this helpful

USA Spec BT45-ACU

Bill from Iuka, MS on 3/25/2018

2008 Acura 3.2TL

Verified customer (What's this?)
Verified employee purchase (What's this?)

Product is exactly as advertised. Delivered quickly and efficiently. Automated ability to track shipment was a real delight. Product came with excellent documentation and installation instructions. I am very satisfied with the entire experience and will recommend Crutchfield to all my friends with automotive electronic needs.

Pros: Easy install Excellent instructions Great performance Felt like the company really cared for me as a customer

Cons: None

Crutchfield response on

1 of 1 found this helpful

You'll love your car again!

Lee from Chicago il on 3/30/2017

2005 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

This device is awesome! It essentially makes your car like it has factory Bluetooth. Fantastic upgrade for people like me who wan to keep their car a few more years. Pairs automatically when getting in your car. Downside you will lose a set of XM presets. Easy plug and play installation. Love it and my car again!

Pros: Works perfectly

Cons: Lose a set of XM presets

Crutchfield response on

4 of 4 found this helpful

USA Spec BT45-ACU

Crutchfield customer from Richmond,VA on 3/16/2017

2006 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

This item is excellent! It was a easy install, and easy to pair my phone with.

Pros:

Cons:

Crutchfield response on

2 of 2 found this helpful

Bluetooth music link

Chris from Simi Valley, CA on 2/26/2017

2006 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

Very easy to install. Easy initial Bluetooth pairing and automatically connects when turning car on. Sound is awesome and clean! Great product!

Pros: Easy install. Great Bluetooth connection Awesome sound

Cons: None so far

Crutchfield response on

3 of 3 found this helpful

As advertised; happy with product

John from Arlington, VA on 12/13/2016

2009 Acura MDX

Verified customer (What's this?)
Verified employee purchase (What's this?)

Have had the product installed now for about ten days. The instructions from Crutchfield for my SUV were excellent...as a first time installer I wouldn't have been able to complete the project without them! The unit has performed as expected and without glitches so far. Wish the default was resorting to the installed microphone in my car rather than answering via the supplied microphone--I only purchased the unit for music; Bluetooth calls were standard on my SUV. The sound quality is better than expected. In fact, think it is better than using the auxiliary connection with adapter and my iPhone 7. The unit itself is pretty straightforward and the manufacturers instructions are adequate except that better and more complete instructions about the dip switches would be helpful. It's not clear whether up or down is "on" and not clear why there are four switches when the instructions only discuss two options. Likely more configurations are possible, but they are not described in the instructions.

Pros: Better than expected sound Relatively straightforward installation Great Crutchfield installation instructions

Cons: Somewhat confusing switch set up Manufacturer's instructions are pretty good but could be better on some limited issues.

Crutchfield response on

5 of 5 found this helpful

Easy to install, easy to use

Gilberto from Chicago, IL on 6/6/2016

2005 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

First off, I ordered this late Wednesday afternoon on the Crutchfield site and it arrived Friday morning, 1.5 days later. Amazing service from them again. From the time I opened the package and read the instructions, accessed the proper panel in my car plugged everything in and synced my phone, maybe half an hour passed. Everything has worked seamlessly. One tip I do have though is if you want to use the Hands-free link from the car and also connect to the USA Spec Bluetooth device to listen to music, go into the settings tab for the USA Spec device and make sure you only select the media audio function to on.

Pros:

Cons:

Crutchfield response on

10 of 11 found this helpful

USA Spec BT45-ACU

RManning from North Carolina on 10/4/2015

2007 Acura 3.2TL

Verified customer (What's this?)
Verified employee purchase (What's this?)

I had this installed in my 2007 Acura TL Type-S. The bluetooth connection works great.As soon as I start the car, the music starts playing, it pauses and restarts for phone calls. It also still allows use of the OEM HFL system for phone calls, which is nice because I can still use the steering wheel buttons and the sound quality is better.

Pros: Bluetooth connection was easy and seamless, and the music sound quality is perfect.

Cons: Nothing at this point

Crutchfield response on

6 of 6 found this helpful

Technical huh...???

ShawnG from Pennsylvania on 9/22/2015

Verified customer (What's this?)
Verified employee purchase (What's this?)

The BT45 ACU by USASPEC is a pretty good product; unfortunately, there are times when it doesn't work at all and its malfunction can cause other electrical components such as the navigation system and the CD player to not function properly as well. Upon first installing the product I noticed that it was extremely simple to install, literally nothing more than a simple plug-and-play. The issue came when driving over bumps, stopping, changes in temperature were all factors that were thrown into the mix, and yes I did secure it tighter than a mental patient in a stray-jacket. Nevertheless, those variables caused the BT45- ACU to malfunction just as much as it worked, 50/50. Considering, this wasn't a relationship, and I was expecting only to be given to, and I wasn't looking for hot and cold, "BT45 loves me, and then it loves me not, " I returned it and decided that marriage to this equipment, wouldn't be a great idea, because it would have on the hook for carimony.

Pros: Good Sound Quality; Easy Install

Cons: You never know when it's going to nag you, and trust me I get enough nagging.

Crutchfield response on

6 of 6 found this helpful

bt-45

Marchello m from Illinois on 6/1/2015

2009 Acura MDX

Verified customer (What's this?)
Verified employee purchase (What's this?)

So far this unit has performed very well! I can make and answer calls, and my music streams easily, with clear sound. The use of the steering wheel buttons is awesome! The unit is small, and easy to install, although the mic could give someone who isn't technically proficient a challenge. My acura mdx was super easy install since almost all the plastic interior pulls off easily. I only had one issue, and that was that my phone was connected via bluetooth, and all was working perfectly. Then one night my son was in the car with his mother, he connected his phone via bluetooth, it worked very well. The next morning I went to work, my phone connected but the voice saying it was connected didn't sound, and my music could not stream. I could however still make calls. I had to go into the back of car where unit is plugged into xm receiver, disconnect, and then plug back in, and re-pair my phone. I haven't had that problem again yet, and hopefully won't. So overall a rating of 4.

Pros: Small, easy to install, plug and play, allows use of steering wheel controls through xm radio, and great sound on both calls and music streaming.

Cons: Nothing aside from the one mishap with not being able to stream music for a day, and having to unplug and then plug back in.

Crutchfield response on

3 of 3 found this helpful

USA Spec BT45-ACU

Tommy from Maple Grove, MN on 4/20/2015

2006 Acura RL

Verified customer (What's this?)
Verified employee purchase (What's this?)

I had this installed in my 2006 Acura RL about 2 weeks ago. The bluetooth connection works great. Right after I start the car music starts playing, and it pauses and restarts for phone calls. It also still allows use of the OEM HFL system for phone calls, which is nice because I can still use the steering wheel buttons and the sound quality is better. I have 2 minor issues. The nav screen displays song info, but I have to use my phone to navigate through playlists or albums. I had assumed that I would be able to do that through the nav screen. Also, a couple times the unit has interfered with my XM radio prompts. I think that is an anomaly, and the USA tech support team has been helpful.

Pros: Bluetooth connection is easy and seamless, and the music sound quality is great as long as the phone is not in my pants pocket (using iPhone 6). Also still allows use of the OEM HFL system for phone calls.

Cons: Nav screen shows song info, but only allows me to skip forward or back one song at a time. Can't navigate playlists or artists through the nav screen, so I still have to use the phone for those functions. Also it has interfered with the XM radio playback a couple times, but the tech team said that is an unusual issue.

Crutchfield response on

7 of 7 found this helpful

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

More details on the USA Spec BT45-ACU

Stacey B.

Product Research

Features

Add-On Bluetooth Interface Module (for Acura): The USA Spec BT45-ACU is a Bluetooth 2.1 + EDR (Enhanced Data Rate) Phone & Music Interface for select Acura vehicles. The BT45-ACU lets you add Bluetooth hands-free communication and wireless music streaming to your compatible vehicle's factory radio. It also features an auxiliary input and USB charging port. The USA Spec BT45-ACU includes a hide-away module, external microphone, and wiring harness.

Vehicle Compatibility: The USA Spec BT45-ACU is compatible with select 2005-2009 Acura vehicles with factory navigation & Live Traffic (as of 12/16/2014).

Make Model Year
Acura RL 2005-2009
TL 2007-2008
*MDX 2007-2009
RDX 2007-2009
Please consult Crutchfield's Outfit My Car for your vehicle's specific compatibility.
Notes: You are able to keep your vehicle's factory installed Navigation, Satellite Radio, CD-changer, RSE (rear entertainment system), USB port, and/or Aux input.

Bluetooth Pairing: The USA Spec BT45-ACU can only be paired and connected to one Bluetooth device at a time. Its compatible with most Bluetooth-enabled mobile devices such as Apple iPod touch/iPhone/iPad, Android smartphone/tablet, Blackberry, Windows phone, and more.

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 BT45-ACU.

Bluetooth Hands-Free Communication (HFP): The USA Spec BT45-ACU 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.

  • Answering a Phone Call: When there is an incoming call, your factory stereo's music will be muted and an audible ring-tone will be heard through your vehicle speakers. You can even have the BT45-ACU 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. To answer the call, simply press the Tune Up, CH+, or Track/Seek Up button on your factory radio or steering wheel control. To end or reject a call, press the Tune Down, CH-, or Track/Seek Down button on your factory radio or steering wheel control.
  • Dialing a Phone Number: In order to dial a phone number, you will still need to use your Bluetooth-enabled mobile phone; you cannot dial a number from the factory radio. Once you've dialed a number from your mobile phone, then the call will be automatically transferred to the BT45-ACU and your factory stereo system.
  • External Microphone: The USA Spec BT45-ACU includes an external microphone to carry on your side of the conversation, while 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 16' cable terminated by a 3.5mm connector that connects to the BT45-ACU module; it measures 0.9375" (w) x 0.6875" (h) x 1.625" (d). The microphone has a self-adhesive backing to mount it to your vehicle's driver-side pillar, head-liner trim, or dash (do not mount it to the windshield.
     
Note: *If you have a 2007-2009 Acura MDX with Navigation, the BT45-ACU will not auto-mute the radio upon an incoming call. You must manually switch to the XM1 source first in order to answer the call using either the factory radio or steering wheel controls.

Bluetooth Audio Streaming (A2DP/AVRCP): The BT45-ACU 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; in some cases you can also view song/artist information on your factory radio's display.

  • Wireless Music Streaming: 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).
  • Music Control: You can control Play/Pause and Previous/Next Track functions from your vehicle's factory radio or 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.
  • Song/Artist Information: In many cases, you can view artist, album, and song title information on your factory radio's display. In order to view song/artist information on your factory radio's display, your factory radio and your Bluetooth-enabled device must meet the following requirements:
    • Your factory radio must have an XM button; a satellite radio does not need to be activated, nor does the satellite radio tuner need to be present.
    • If you are using a Bluetooth-enabled Apple iPod touch/iPhone/iPad, then it must be running iOS 6 or higher. If you are using a Bluetooth-enabled Android smartphone/tablet, then it must be running Ice Cream Sandwich (4.0) or higher operating system.
    • Your device's Bluetooth AVRCP profiles must be 1.4 or higher.

Auxiliary Input: In addition to wireless Bluetooth connectivity, the USA Spec BT45-ACU is fitted with an auxiliary audio input (3.5mm) for connection of practically any portable audio device with a headphone jack output or analog audio output.

USB Charging Port: The USA Spec BT45-ACU features a USB (type-A) port to charge your smartphone or other portable audio device in your vehicle. Because the BT45-ACU is a hide-away device, you'll want to purchase a USB extension cable (sold separately) to make the unit's USB charging port accessible. The USB charging port is rated at 5V/2.1A.

Note: This USB port is for charging only; it does not support music streaming.

Dip Switches: There are 4 dip switches that will need to be configured to match the type of factory radio you have; Navigation or Non-Navigation.

Installation: The USA Spec BT45-ACU installs either behind the glovebox, in the trunk or underneath the factory subwoofer (based on type of vehicle and where the XM Satellite Radio tuner is located).

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
assistance from adviser on finding device. [ Michael  Mar 03, 2019 ]
A
I wanted to have Bluetooth connectivity in my vehicle due to the factory unit not functioning. [ Eric  Feb 23, 2019 ]
A
I trust Products from Crutchfield. It should work seamlessly with my Acura MDX. [ caleb young  Sep 21, 2018 ]
A
I need my apple music [ Karen  Aug 28, 2018 ]
A
I heard this item will solve my solution for my 05 RL with no bluetooth capabilities. My car is still in good shape and that would help me keep it longer as it has the latest technologies found in my truck. [ William  Aug 11, 2018 ]
A
Best option available to add BT for music streaming to a 2006 Acura RL [ KURT  May 16, 2018 ]
A
To listen to music from my phone [ D  Mar 27, 2018 ]
A
This item had awesome reviews! [ Andrew  Oct 19, 2017 ]
A
a youtube video and because David (online chat) was helpful. Found it cheaper at other places but your customer/support service is worth the extra $. Thank you, Jerry [ Jerome  May 14, 2017 ]
A
because i need bluetooth in my car. [ Eric  Jan 21, 2017 ]
A
I used the BT45-HON on my previous car and it worked well. [ S  Jan 15, 2017 ]
A
Can't replace the radio in my 05 Acura Rl but wanted to be able to stream music via Bluetooth. [ Gregory  Jul 14, 2016 ]
A
First Crutchfield recommends it and stands by it. Second, almost universal positive reviews. Third, I can install it myself. [ RICHARD C  May 19, 2016 ]
A
I needed a way to stream my music, being that my vehicle has no auxiliary input this was the best way to go. This was a no brainer for me. [ Adrian  Apr 18, 2016 ]
A
To have audio streaming via bluetooth for my 2007 Acura RL. [ Michael  Mar 07, 2016 ]
SHOW MORESHOW LESS

2 questions already asked

Q
Does the BT45-ACU Bluetooth Interface work with 2008 Acura TL Types S?
[ einciart  Apr 15, 2017 ]
1 answer
A
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.
[ Kenny  Apr 17, 2017 ]  Staff
Q
I have a 2008 Acura MDX with entertainment package. The car is equipped with bluetooth but it is limited to phone calls. Will this device allow me to stream music from my phone/tab to the car audio system?
[ Abhishek  Feb 01, 2015 ]
1 answer
A
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  Feb 01, 2015 ]  Staff

Loading articles...

TOP