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[Solved] Audi A4 B6 2004 Wagon, Chorus 2 Radio: Button Illumination & Auto On/Off Issue - Kamil Kupiec

kamil.k90 14277 19
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  • #1 17018788
    kamil.k90
    Level 8  
    Hello.
    I bought the Audi A4 B6 2004 station wagon last week.
    A chorus 2 radio is mounted in it. It was only in the evening that I noticed that there was no backlight on the panel buttons. The display works normally the same as the tiny TP button window. Is it possible to solve this problem?
    The problem is also that the radio does not turn on / off after starting / switching off the car.
    Thank you in advance for your reply and I apologize if there has ever been a similar problem discussed but I haven't found anything on the forum.
    Regards Kamil Kupiec
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  • Helpful post
    #2 17018814
    pdemski
    Level 20  
    On these radios, the backlight turns on together with the lights in the car. on the sixth pin of the power cube after switching on the lights must be 12V. Maybe someone was fumbling in the cables, you need to pull out the radio and check. It doesn't hurt to check the car's fuses.
    Audi A4 B6 2004 Wagon, Chorus 2 Radio: Button Illumination & Auto On/Off Issue - Kamil Kupiec
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  • #4 17019678
    kamil.k90
    Level 8  
    Thanks a lot ? only on the weekend I will have time to play with it. I hope it can be repaired somehow ? Should someone recommend some inexpensive radio that fits my car? There is a factory amplifier in the trunk.

    Added after 5 [hours] 1 [minutes]:

    And how to solve the problem with the radio turning on and off automatically?
  • Helpful post
    #5 17021820
    pdemski
    Level 20  
    Check first that no one has been processing power cubes, because people can do various wonders, this could be your whole problem.
  • #6 17022205
    kamil.k90
    Level 8  
    pdemski wrote:
    Check first that no one has been processing power cubes, because people can do various wonders, this could be your whole problem.

    I'm a little green but it's about the A pin 4 from turning on the ignition and pin 6 from the backlight? I apologize in advance for lack of knowledge in this field ?
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    #7 17022237
    pdemski
    Level 20  
    Exactly.
  • #8 17022364
    kamil.k90
    Level 8  
    I took out the radio and this picture appeared. Audi A4 B6 2004 Wagon, Chorus 2 Radio: Button Illumination & Auto On/Off Issue - Kamil Kupiec Audi A4 B6 2004 Wagon, Chorus 2 Radio: Button Illumination & Auto On/Off Issue - Kamil Kupiec Audi A4 B6 2004 Wagon, Chorus 2 Radio: Button Illumination & Auto On/Off Issue - Kamil Kupiec
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  • #9 17022405
    piotrek22101
    Level 39  
    Brown speakers, black power supply. Minus brown, plus solid red with a strip, the third wire is K-line.
  • #10 17022423
    kamil.k90
    Level 8  
    piotrek22101 wrote:
    Brown speakers, black power supply. Minus brown, plus solid red with a strip, the third wire is K-line.

    Can you somehow get it backlight and turn it on automatically?
  • #11 17022443
    piotrek22101
    Level 39  
    Is the radio sticker labeled? If it is as above (gray), then no. There should be a third cube.
  • #12 17022448
    kamil.k90
    Level 8  
    All in all, I didn't pay attention to the stickers. I'll have time to play with it over the weekend. In case you can, for example, pull the backlight and power supply from the ignition?
  • #13 17022462
    piotrek22101
    Level 39  
    You can pull, only the radio probably does not have these pins, you will see on the description.
  • #14 17022477
    kamil.k90
    Level 8  
    Can you make some extra pins? For example, solder them from the phone's side plug?
  • #15 17022478
    piotrek22101
    Level 39  
    What will the pin give you, as no further electronics? Chorus 2 takes these signals from Can.
  • #16 17022498
    kamil.k90
    Level 8  
    And how about connecting another radio? Eg what did you send? Will everything work properly with this wiring condition?
  • Helpful post
    #17 17022519
    piotrek22101
    Level 39  
    You need a plus after the ignition switch, adapter for the third cube if there is an amplifier. Backlight is an option, depending on the radio model.
  • #19 17024794
    kamil.k90
    Level 8  
    rybeh wrote:
    This connection should work


    The connection will fix the backlight or automatic on / off?
  • #20 17027197
    kamil.k90
    Level 8  
    Subject to close? it turned out that there was no one cube connected, which hid behind the air conditioning panel. The backlight works, switching off after removing the key works. The current station and RDS are displayed next to the clocks.
    Thank you all for your help.
    Greettings and have a nice weekend!
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Topic summary

The discussion revolves around an Audi A4 B6 2004 station wagon equipped with a Chorus 2 radio, which has issues with button illumination and automatic power on/off functionality. The user discovered that the radio's backlight does not activate with the vehicle's lights, and the radio fails to turn on or off with the ignition. Responses suggest checking the wiring, specifically the power connections at pin 4 for ignition and pin 6 for backlight, as well as verifying the car's fuses. It was noted that the Chorus 2 radio relies on CAN signals for these functions. Ultimately, the issue was resolved when the user found a disconnected connector behind the air conditioning panel, restoring both the backlight and the automatic power feature.
Summary generated by the language model.
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