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Crux BTS-VW2 Bluetooth® Interface

Stream music through the factory radio in select 2002-12 Volkswagen and Audi vehicles

Item # 249BTSVW2

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Item # 249BTSVW2

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About the Crux BTS-VW2 Bluetooth® Interface

Crux BTS-VW2 

Crux's BTS-VW2 adapter allows you to add Bluetooth streaming to the factory radio in your Volkswagen or Audi. Now you can stream audio without having to replace the car radio, and even hear navigation app voice prompts over your car system when in Bluetooth mode. The BTS-VW2 also features a USB port for music playback which you can control via the radio panel or your steering wheel controls. You can charge your phone from the USB port, and the module also includes a 3.5mm auxiliary input jack for other audio sources. The package also includes a magnetic phone mount.

Product highlights:

  • stream audio through your Volkswagen or Audi's factory radio
  • USB music playback with controls via radio panel or steering wheel controls
  • USB charging from module USB port
  • 3.5mm AUX input jack
  • magnetic phone holder included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # BTS-VW2

What's in the box:

  • Bluetooth/USB/Aux interface adapter (attached 30" harness)
  • Vent mount
  • Magnetic base
  • Magnetic plate
  • Self-adhesive magnetic plate
  • Installation & Operation Instructions

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More details on the Crux BTS-VW2 Bluetooth® Interface

Stacey B.

Product Research


Add-On Bluetooth/USB/Aux Interface Adapter: The Crux BeeLine series BTS-VW2 allows you to add Bluetooth music streaming, USB music playback & charging, as well as a 3.5mm Aux input to the factory radio of select Audi & Volkswagen vehicles.

Vehicle Compatibility: The Crux BeeLine series BTS-VW2 is compatible with select 2002-2011 Audi & Volkswagen vehicles that feature a factory radio with a 12-pin CD changer port.

Make Model Year
Audi A3 2008-2010
A4/S4 2007-2009
TT 2007-2010
R8* 2006-20009
Volkswagen Beetle 2009-2011
EOS 2007-2011
Golf 2003-2011
Jetta 2002-2009
Passat 2003-2007
Touareg 2004-2012


  • Factory radio must have a 12-pin CD changer port.
  • If your vehicle is equipped with an external factory CD-changer, it must be disconnected.
  • Not compatible in vehicles with factory navigation radios.
  • *The Audi RR8 must have a factory radio with a CD player and no touchscreen.

Bluetooth Music Streaming: Thanks to built-in Bluetooth 2.0 with support for A2DP, you are able to wirelessly stream stored music and music apps (using SBC codec only) from your Bluetooth-enabled smartphone or portable audio player to the Crux BTS-VW2 and your vehicle's factory radio. There is no music control or song/artist information on the factory radio; this will still need to be done from your Bluetooth source device. You can also use Bluetooth to hear navigation voice prompts (factory radio and adapter must be in Bluetooth mode). The adapter will only pair to one device at a time.

Notes: The Crux BeeLine series adapter does not support Bluetooth hands-free phone communication.

USB Port: The adapter's USB-A 2.0 port supports playback of MP3 music files stored on a USB mass storage class (MSC) device, like a USB thumbdrive (you may want to purchase a USB extension cable). You can control Track/Folder Up & Down from the factory radio or steering wheel controls (if equipped). The factory radio will not display song/artist information. The USB port can also be used to charge (5V/0.5A) your smartphone.

Aux Input: There is a 3.5mm auxiliary input for connecting almost any external portable audio source with a headphone jack or analog audio output. Music from your connected portable audio source will be heard through the factory radio and speakers. There are no playback controls or song/artist information on the factory radio.

Magnetic Vent Mount: The Crux BTS-VW2 comes with a magnetic vent mount for your smartphone. The mount works with most air vent configurations found in today's vehicle's - including horizontal, vertical, and round air vents. The vent mount includes a magnetic device cradles and comes with a self-adhesive magnetic plate which attaches to the outside of your smartphone or inside of your smarpthone case. Once the magnetic plate is installed, simply hover your mobile device over the cradle and it will quickly snap into place and remain there. You can quickly remove it too. The mount's ball-and-socket mechanism allows you tilt your smartphone up or down, turn it left or right, and rotate it 360-degrees. You'll be able to mount your device in a vertical (portrait) or horizontal (landscape) orientation.

Plug-&-Play Harness: The Crux BeeLine series BTS-VW2 features an attached 30" harness which plugs into the 12-pin CD changer port on the back of the factory radio. The factory radio will need to be removed from the dash in order to gain access to the 12-pin CD changer port. If there is a factory external CD changer already plugged into this port, you will need to unplug it and leave the CD changer disconnected.

Operation: The Crux BTS-VW2 is accessed through the "CD" button on your vehicle's factory radio. In this mode the factory radio will display "CD1 TR1". You cannot manually switch between the inputs of the BTS-VW2. Instead, the BTS-VW2 automatically switches for you based on what device you have connected - Bluetooth, USB, or Aux (only connect one device at a time).  

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Customer Q&A

15 questions already asked

According to the fit "calculator", this does NOT fit my non-monsoon system factory unit on my 02 Passat wagon, can someone advise then, which unit will?
[ Kay  Oct 24, 2021 ]
1 answer
At the time of this post, we do not have a Bluetooth adapter that connects to the stock radio in your wagon like this one does. We may have a Bluetooth FM transmitter that can work and if we do, this link will take you the choices:
[ Paul  Oct 26, 2021 ]  Staff
What are the dimensions of the device itself?
[ Larry  Apr 30, 2021 ]
2 answers
I have installed this under center console am not able to give actual dimensions, but it's a little bigger than a pack of cigarettes.
[ Frederick  May 13, 2021 ]
It's pretty small. 3x2x3/4 inches. It works quite well and as I recall I just had to loosen one screw at the back of the glove box to fish the wire through. You will need the special tools to get the radio out. Honestly it works really well and sounds good too. Oh! It's also basically just plug into the port on the back, super easy.
[ Gregory  May 13, 2021 ]
Can you connect more than one phone to this device?
[ Renea  Nov 18, 2020 ]
2 answers
Yes, but not at the same time.
[ Douglas  Dec 03, 2020 ]
I'm not sure. I only connected my phone to it
[ QUINTEL  Nov 19, 2020 ]
I want to play music on flash drives thru the USB connection. Can I disconnect the trunk mounted cd changer and plug this in back there?
[ Joe  Nov 11, 2020 ]
1 answer
This plugs into the back of the monsoon radio. You have to unplug the cd changer on back of radio.
[ Frederick  Nov 11, 2020 ]
Does this retain steering wheel controls? (2008 Audi A4)
[ Alex  May 17, 2020 ]
1 answer
You can use the volume control no problem but to change music from steering wheel you can not due to the fact your in CD mode to play your music through Bluetooth
[ Mina George Bes  May 18, 2020 ]
Does this retain steering wheel controls? (2008 Audi A4)
[ Alex  May 17, 2020 ]
7 answers
You keep the steering wheel controls you have but it will not add anything to their capability. This was a super easy install and it works pretty flawless. We run an auto start in the winter and it pairs to your phone with in so many minutes of starting the car. If the phone is not there when you get in you have to turn the stereo off then on and it will find the phone. You can not make phone calls through the stereo with this but it will play music from the phone.
[ JAMES  May 19, 2020 ]
Unfortunately this did not work in my 2009 A4 with a symphony stereo at all. I even spoke with the manufacturer about it not working in a vehicle it says it's for. I wouldn't waste your time.
[ jamie  May 17, 2020 ]
I have a 2007 Touareg and it only has volume on wheel so yes works perfect. I guess the best way to say it is this connects to the CD changer input and Bluetooth to your media player (iPhone in my case) so only the controls that would communicate back to the changer would be available. I do not believe Bluetooth would be able to interpret these commands so other then the volume I don't think any would work. All that being said it's basically a non issue for me as I just do playlists because it's too distracting for me to search around for the songs I like. Also I find I rarely use wheel controls (not just my VW but all) as it's usually just easier to turn the knob. Hope that helps and sorry it got a little long winded.
[ Gregory  May 17, 2020 ]
Not sure. As our vehicle is an older model and does not have controls on the steering wheel. We are using the radio buttons for operation...
[ Eric  May 17, 2020 ]
Yes I did
[ terrance  May 17, 2020 ]
I have a 2003 jetta GLI. It does not have steering wheel controls. The monsoon radio does not operate the iphone. It will restart the current song, but that seems to be it.
[ Frederick  May 17, 2020 ]
Yes! Been using mine since last October. It just plugs into the existing CD changer plug in the back of your factory stereo, nothing interfering with your current controls. Good luck!
[ C  May 17, 2020 ]
Is this unit compatible with a 2004 passat with a â??monsoonâ?? system?
[ Lorne  May 09, 2020 ]
3 answers
It works well in my 2002 passat w8 with the monsoon. I was confused as to where to plug it in until the tec guys told me to unplug the cable from the cd changer. The steering wheel volume works with it but not song skip on my adroid. Glenn.
[ Glenn  May 18, 2020 ]
I had it in a 2004 Passat with monsoon. It works in place of the CD changer, connecting behind the head unit.
[ Sidney  May 09, 2020 ]
Yes, works perfectly.
[ Nancy  May 09, 2020 ]
Will this work in my 2009 Audi A4 with non MMI factory stereo?
[ Naun18  May 27, 2018 ]
1 answer
Possibly. If you do not have the stock navigation (GPS) but do have the factory CD changer (or, at least the option for it), the adapter will work, yes. If you have the factory Satellite Radio option; it will no longer function when the adapter is installed. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service:
[ Ryan  Jun 02, 2018 ]  Staff
Will it fit Audi A6, 2006?
[ Roman  Mar 07, 2018 ]
1 answer
If Audi uses the same radio type of the VW Passat, yes and it is a superior product in that one will not be able to tell whether or not the Bluetooth is on.
[ Darryl  Mar 07, 2018 ]
Can I still use a clip-on hands free Bluetooth adapter for receiving calls while using this adaptor on my car/stereo/phone?
[ korichan  Oct 02, 2017 ]
1 answer
Most phones can only be paired to one Bluetooth device at a time. You can check with the manufacturer of your phone or your wireless carrier to confirm it's capabilities.
[ Ryan  Oct 04, 2017 ]  Staff
What bluetooth protocols/technologies does this unit support? For example, does it support AptX? What version of bluetooth? Which profiles are supported?
[ Steve  Sep 19, 2017 ]
1 answer
We checked in with Crux to confirm here: All the CRUX BTS type interface are only for BT Audio streaming only, you cannot use it for phone calls. The only two Bluetooth profiles that are supported are the A2DP audio distribution profile, and AVRCP remote control profile. The BT chipset is 2.0.
[ Jeff  Sep 27, 2017 ]  Staff
Will the "phone audio" play over the car's speakers during an incoming call?
[ Derf  Apr 26, 2017 ]
5 answers
[ christopher  Apr 27, 2017 ]
Nope. Not sure why it won't, but still love it. Works great in the car
[ Tina  Apr 26, 2017 ]
Only media audio is played over the speakers, so phone call audio is only heard through the phone.
[ Drilon  Apr 26, 2017 ]
yes it will unless your phone is on silent
[ dain  Apr 26, 2017 ]
It did not work on my 2016 Audi A4. Audi Dealer recommends tune2air WMA3000A it hooks up to the port in the glove box.
[ SERGIO  Apr 26, 2017 ]
Will this unit disable to factory cd player on my concert II+? or can I still play cd's in the single disc slot on the head unit with this connected. Thanks!
[ TKHood  Apr 08, 2017 ]
1 answer
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 08, 2017 ]  Staff
Hi I'm interrest about this product "Crux BTS-VW2 Bluetooth" could you please check if it will working with my car ? I have an VW EOS 2015 BR Daniel
[ Daniel  Mar 29, 2017 ]
1 answer
For additional 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.
[ Kenny  Mar 31, 2017 ]  Staff

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