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Crux BTS-VW1 Bluetooth® Interface

Stream music through the factory radio in select 1998-08 Volkswagen and Audi vehicles

Item # 249BTSVW1

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Item # 249BTSVW1

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About the Crux BTS-VW1 Bluetooth® Interface

Crux BTS-VW1 

Crux's BTS-VW1 adapter allows you to add Bluetooth streaming to the factory radio of 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-VW1 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-VW1

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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Crutchfield response

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More details on the Crux BTS-VW1 Bluetooth® Interface

Stacey B.

Product Research


Add-On Bluetooth/USB/Aux Interface Adapter: The Crux BeeLine series BTS-VW1 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-VW1 is compatible with select 1998-2008 Audi & Volkswagen vehicles that feature a factory radio with an 8-pin CD changer port.

Make Model Year
Audi A2 1999-2005
A3 2001-2006
A4/S4 1998-2006
A6/S6 2001-2004
A8/S8 1998-2003
Volkswagen Beetle 1999-2008
Golf 1998-2006
Jetta 1999-2008
Passat 1999-2006


  • Factory radio must have an 8-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.

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-VW1 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-VW1 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-VW1 features an attached 30" harness which plugs into the 8-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 8-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-VW1 is accessed through the "CD" button on your vehicle's factory radio. In this mode the factory radio will display "CD1 TRACK1". You cannot manually switch between the inputs of the BTS-VW1. Instead, the BTS-VW1 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

5 questions already asked

What is the output on this unit? Do I have to lower my phone volume to low before starting the system so it doesn't 'blast', or is it somehow attenuated/controlled/whatever. Before I had an interface that didn't match volume outputs unless I controlled first from the phone, the the HU.
[ j  Dec 24, 2020 ]
2 answers
My experience with this device is the volume is lower when it connects. I have to turn up the volume on my phone to get a suitable volume level. It might be different for various vehicles.
[ Kyle  Dec 24, 2020 ]
The Monsoon brand VW BUG radio I installed the Bluetooth unit to uses the CD selection. On my unit the volume level almost matches the radio volume. Prior to installing the Bluetooth unit, I had to use the wired AUX INPUT and that volume was way too low. When I forgot to turn the volume down before switching back to radio, it would blast me!!! The Bluetooth unit has eliminated that issue, thankfully!
[ JEFFREY  Dec 24, 2020 ]
Can this plug into the cd changer connection in the trunk?
[ John  Dec 30, 2019 ]
2 answers
It plugs into the back of the radio where the Wire from the CD changer goes. So far I like it , it's the only way to get plug and play Bluetooth in a beetle without changing the entire radio to a flat one that looks goofy in the rounded dash . the only bad thing is that when you start the car it blasts "CRUX BLUETOOTH CONNECTED !" At maximum volume and there is no way to turn it down or prevent it from blasting your ears every time you crank the car .
[ STAN  Dec 30, 2019 ]
No, on a Mk4 VW it's meant to plug into the back of the radio.
[ norman  Dec 30, 2019 ]
Will this also allow me to answer phone calls hands free?
[ KATHY  Apr 23, 2017 ]
7 answers
No, this system does not accommodate hands free phone calls. However the music does shut off when a call comes in.
[ Corinna  May 11, 2017 ]
I don't think so. There is an aux port which I wondered might allow it if a mic was hooked up.
[ Shad  May 02, 2017 ]
No, it only functions as a bluetooth receiver. Doesn't have any kind of mic.
[ Michael  May 01, 2017 ]
No, it won't. Your phone has two different Bluetooth connections: One for phone calls and one for media. This device only connects to the media Bluetooth for playing all your music from the phone or tablet through the car stereo. It does not have a microphone to be able to use it for phone calls.
[ Brian  Apr 25, 2017 ]
No, it will only allow you to hear your caller through the radio, but you will still be using the phone for the microphone.
[ DenCon509  Apr 24, 2017 ]
No, it won't let you answer phone calls hands free. It momentarily disconnects from the car during the phone call and then reconnects after the call. Hands free devices come with a microphone. This one doesn't have one. I also looked at the manual again and it doesn't show any hands free features. Good luck with your search.
[ John  Apr 24, 2017 ]
I do not know. My phone syncs with both the radio unit to stream what's on the phone and a Garmin GOS device for phone calls. When the phone rings it does prioritize the phone call and temporarily suspends streaming to the radio. When the call ends the radio streaming automatically resumes. If only the radio Bluetooth were used I do not know how phone calls would be handled.
[ Lee  Apr 24, 2017 ]

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