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Thread: Audi a6 avant 2.0 tdi -11 left rear light wont turn off

  1. #1
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    Audi a6 avant 2.0 tdi -11 left rear light wont turn off

    Hi

    I have an audi a6 avant 2.0 tdi -11 that the rear light sometimes flashes or stays steady on when the car is turned off. Then it can suddenly disappear after some time without and fault codes and then come back again.
    I read that some cars have an faulty brake light switch but I hooked up my VCDS to the car and checked it whit out any errors.



    Does someone have any ides?

    Regards

  2. #2
    NostraJackAss Jack@European_Parts's Avatar
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    Did you try unplugging the BL switch when it happens?

    Look for corrosion at light for back feed from water ingress.

    Post an auto-scan in code tags please.........
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  4. #3
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    Did you try replacing the bulb. Swap it

  5. #4
    FoRT jyoung8607's Avatar
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    Quote Originally Posted by gnuttisch View Post
    I have an audi a6 avant 2.0 tdi -11 that the rear light sometimes flashes or stays steady on when the car is turned off. Then it can suddenly disappear after some time without and fault codes and then come back again.
    I read that some cars have an faulty brake light switch but I hooked up my VCDS to the car and checked it whit out any errors.
    Both, or just on one side? Sounds like just one side.

    If it's just one, that sounds more like the European "parking lights" feature, wherein the light on one side stays on indefinitely if you leave the turn signal stalk set to one side or the other after shutdown. I can't account for it flashing, but you could at least try setting the parking lights on to see if it's enabled on your car and simulates part of what you're seeing.

    Jason

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  7. #5
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    Hi,

    Thanks for your all replies.

    Its is only the left rear light, the one that is mounted to the hatch.
    I removed the entire lamp but I couldn't see any signes of corrosion or water.
    And It doesnt mather how I have the turn switch when I turn of the car.


    Its only the leds on the lamp that are turned on at full power, just like when you where braking.
    And the lights are led from the factory and nothing that I have retrofitted. I checked the coding as well, and highlights should be coded.

    Code:
    Wednesday,16,November,2016,21:50:01:41258
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8 x64
    VCDS Version: 16.8.3.1 (x64)
    Data version: 20161010 DS267.0
    www.Ross-Tech.com
    
    
    VIN: WAUZZZ4F0BN063960   License Plate: JSE379
    Mileage: 148980km-92571mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 4F (4F0)
    Scan: 01 03 05 08 09 15 16 17 18 19 42 46 4F 52 53 55 56 5F 62 69
              6D 72 76
    
    VIN: WAUZZZ4F0BN063960   Mileage: 148980km-92571miles
    
    01-Engine -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    05-Acc/Start Auth. -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    18-Aux. Heat -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    4F-Centr. Electr. II -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    53-Parking Brake -- Status: OK 0000
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: OK 0000
    5F-Information Electr. -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    69-Trailer -- Status: OK 0000
    6D-Trunk Elect. -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    76-Park Assist -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (J623-CAHA)       Labels: 03L-906-022-CAG.clb
       Part No SW: 03L 906 022 FG    HW: 03L 906 022 FG
       Component: R4 2,0L EDC   H14 6420  
       Revision: 11H14---    Serial number:               
       Coding: 010D002C18172918
       Shop #: WSC 02325 785 00200
       ASAM Dataset: EV_ECM20TDI03L906022FG A01007
       ROD: EV_ECM20TDI03L906019L.rod
       VCID: 6FD59106B63C263A55-803A
    
    No fault code found.
    Readiness: 0 0 0 0 0 
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 4F0-910-517.lbl
       Part No SW: 4F0 910 517 AK    HW: 4F0 614 517 BF
       Component: ESP8 front      H03 0060  
       Revision: 00000000    Serial number: 00000000000000
       Coding: 0004475
       Shop #: WSC 02325 785 00200
       VCID: 6DE98B0E7430D42A67-8038
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 05: Acc/Start Auth.        Labels: 4F0-910-852.clb
       Part No SW: 4F0 910 852 B    HW: 4F0 905 852 F
       Component: FBSAUDIC6 ELV   H05 0130  
       Revision: 00H05000    Serial number: 10603401775033
       Coding: 0000129
       Shop #: WSC 02323 785 00200
       VCID: 2579B32EEC402C6AEF-8070
    
       Subsystem 1 - Part No: 4F0 910 132 D
       Component: FBSAUDIC6 EZS   H03 0020
    
       Subsystem 2 - Part No: 4F0 910 220 D
       Component: FBSAUDIC6 IDG   H01 0054
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 4F0-910-043.clb
       Part No SW: 4F0 910 043     HW: 4F1 820 043 AA
       Component: KLIMABETAETIGUNGH20 0170  
       Revision: 00000035    Serial number: 00000030610741
       Coding: 0002324
       Shop #: WSC 02325 785 00200
       VCID: 5B8DD5D69A84AA9A89-800E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 4F0-910-279.lbl
       Part No SW: 4F0 910 279 AF    HW: 4F0 907 279 
       Component: ILM Fahrer      H30 0390  
       Revision: 00000000    Serial number: 4F0907279     
       Coding: 0003122
       Shop #: WSC 02335 785 00200
       VCID: 6DE98B0E7430D42A67-8038
    
       Subsystem 1 - Part No: 4F1 910 113 D  Labels: 1KX-955-119.CLB
       Component: Wischer AudiC6  H11 0040  
       Coding: 00056595
       Shop #: WSC 02335  
    
       Subsystem 2 - Part No: 8K0 910 557   Labels: 8K0-955-559.CLB
       Component: REGENLICHTSENSORH04 0003  
       Coding: 00146221
       Shop #: WSC 02335  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels: 4F0-910-655-10.clb
       Part No SW: 4F0 910 655 Q    HW: 4F0 959 655 G
       Component: Airbag AU1042 H07 0200  
       Revision: --------    Serial number: 003F9004NSGC
       Coding: 30314236303630303031554A304C34463053
       Shop #: WSC 02323 785 00200
       ASAM Dataset: EV_Airba10AURB4 001001
       ROD: EV_Airba10AURB4.rod
       VCID: 3559636E94E05CEA5F-8060
    
       Crash sensor for side airbag: driver side: 
       Serial number: 3574SRB40000D48CF8AU
    
       Crash sensor for side airbag: front passenger side: 
       Serial number: 3584SRB40000D41CB8FP
    
       Crash sensor for side airbag: rear: driver side: 
       Serial number: 3516HRB40302IFG0VRM-
    
       Crash sensor for side airbag: rear: passenger side: 
       Serial number: 3526HRB402O2IFG1141U
    
       Crash sensor for front airbag: driver side: 
       Serial number: 3554NRB40000602F405S
    
       Crash sensor for front airbag: front passenger side: 
       Serial number: 3564NRB40000602E075V
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 4F0-910-549.lbl
       Part No SW: 4F0 910 549 A    HW: 4F0 953 549 D
       Component: J0527               0530  
       Revision: 00H05000    Serial number: 90026110300350
       Coding: 0002042
       Shop #: WSC 02323 785 00200
       VCID: 2765B926964C3E7ADD-8072
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           H02 0100
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels: 4F0-920-xxx-17.clb
       Part No SW: 4F0 920 901 N    HW: 4F0 920 901 N
       Component: KOMBIINSTR.   H08 0211  
       Revision: 00000000    Serial number: FJL40902C     
       Coding: 0F7D110502000008010100
       Shop #: WSC 02391 823 56573
       VCID: 2D694B0E74B0142A27-8078
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 18: Aux. Heat        Labels: None
       Part No SW: 4F0 910 105 A    HW: 4F0 265 081 AA
       Component: Heizgeraet      H08 0100  
       Revision:        B    Serial number: 09018641      
       Coding: 0000011
       Shop #: WSC 02145 785 00200
       VCID: 1B0D95D6DA04EA9A49-804E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels: 4F0-907-468.clb
       Part No SW: 4F0 907 468 M    HW: 4F0 907 468 F
       Component: GW-BEM 4CAN-M H06 0035  
       Revision: LB100029    Serial number: 2900L111238290
       Coding: 000B03
       Shop #: WSC 02391 823 56573
       VCID: 39416F5EB0F8B88ABB-806C
    
       Subsystem 1 - Part No SW: 8K0 915 181 C    HW: 8K0 915 181 C
       Component: J367-BDM  H07 0125 
       Serial number: 00000000002790387721
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels: 4F0-959-793.clb
       Part No SW: 4F0 959 793 T    HW: 8K0 959 793 M
       Component: TSG FA        H12 0362  
       Revision:             Serial number: 0004000210067 
       Coding: 011C06204040410001
       Shop #: WSC 02391 823 56573
       VCID: 48A71A9AFB12D10234-801C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 4F0-910-289.lbl
       Part No SW: 4F0 910 289 K    HW: 4F0 907 289 K
       Component: Komfortgeraet   H26 0210  
       Revision: 02100026    Serial number: 01073407680000
       Coding: 3345009
       Shop #: WSC 02335 785 00200
       VCID: 32535872AD8E4BD27A-8066
    
       Subsystem 1 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HORN H05 1501
    
       Subsystem 2 - Part No: 4F0 910 177 
       Component: Innenraumueberw.H01 0020
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 4F: Centr. Electr. II        Labels: 4F0-910-280.lbl
       Part No SW: 4F0 910 280     HW: 4F0 907 280 A
       Component: ILM Beifahrer   H14 0100  
       Revision:             Serial number: 00000000767875
       Coding: 0001104
       Shop #: WSC 02323 785 00200
       VCID: 5E8BDCC28996BFB2EE-800A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels: 4F0-959-792.clb
       Part No SW: 4F0 959 792 T    HW: 8K0 959 792 M
       Component: TSG BF        H12 0362  
       Revision:             Serial number: 0004000215262 
       Coding: 011C06204040410001
       Shop #: WSC 02391 823 56573
       VCID: 47A519A6F60CDE7A3D-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 53: Parking Brake        Labels: 4F0-910-801.clb
       Part No SW: 4F0 910 801 D    HW: 4F0 907 801 B
       Component: EPB  CEFC0090   H05 0090  
       Revision: --H05---    
       Coding: 0000111
       Shop #: WSC 02145 785 00200
       VCID: 2171A73EF868C04A93-8074
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 8P0-907-357.lbl
       Part No: 8P0 907 357 M
       Component: Dynamische LWR  H02 0010  
       Revision: 00000001    Serial number:               
       Coding: 0000003
       Shop #: WSC 02325 785 00200
       VCID: 44BF0EAA073AF562D8-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (R)       Labels: Redir Fail!
       Part No SW: 4G0 035 056     HW: 4G0 035 056 
       Component: Radio U STD   H52 0051  
       Revision: AB001007    Serial number: 469B40B7668445
       Coding: 010003020100000000
       Shop #: WSC 02391 823 56573
       VCID: 5E8BDCC24996BFB2EE-800A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 5F: Information Electr. (J794)       Labels: 4E0-035-6xx-5F.clb
       Part No SW: 4E0 035 646 D    HW: 4E0 035 646 
       Component: B-B-ER        H60 0140  
       Revision: --------    Serial number: 348B00B7561885
       Coding: 01000001010283ED03000F0DEF6300000200
       Shop #: WSC 02391 823 56573
       VCID: 2579B32E2C402C6AEF-8070
    
       Subsystem 1 - Part No SW: 8T0 919 604     HW: 8T0 919 604 
       Component: DU6 Basic  H42 0084 
       Serial number: 9465AP0B0265046     
    
       Subsystem 2 - Part No SW: 4F0 910 609 E    HW: 4F1 919 611 M
       Component: Bedienteil MM  H01 0060 
       Serial number: 00000001783618      
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left (J388)       Labels: 4F0-959-795.clb
       Part No SW: 4F0 959 795 P    HW: 4F0 959 795 P
       Component: TSG HL        H11 0362  
       Revision:             Serial number: 0004000209317 
       Coding: 010804204040220001
       Shop #: WSC 02391 823 56573
       VCID: 46BB14A2F106C772C6-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 69: Trailer (J345)       Labels: 4F0-907-383.clb
       Part No SW: 4F0 907 383 D    HW: 4F0 907 383 D
       Component: Anhaenger     H08 0080  
       Revision: 2B002002    Serial number: 00000123450992
       Coding: 0103030000000000
       Shop #: WSC 02391 823 56573
       VCID: 2C6F460A4FAA1D2230-8078
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 6D: Trunk Elect.        Labels: Redir Fail!
       Part No SW: 4F9 910 591     HW: 4F9 827 851 F
       Component: ValeoHeckdeckel H24 0290  
       Revision: --H24001    Serial number: E5030000B     
       Shop #: WSC 00066 123 73555
       VCID: 6CEF860A4F2ADD2270-8038
    
       Subsystem 1 - Part No: 4F9 910 592 
       Component: ValeoHeckdeckel H24 0290
    
       Subsystem 2 - Serial number: E5030100B     
    
       Subsystem 3 - Serial number: RD07.09.07--H24001000A0149˙
    
       Subsystem 4 - Serial number: 0A0149˙
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right (J389)       Labels: 4F0-959-795.clb
       Part No SW: 4F0 959 795 P    HW: 4F0 959 795 P
       Component: TSG HR        H11 0362  
       Revision:             Serial number: 0004000209320 
       Coding: 010804204040220001
       Shop #: WSC 02391 823 56573
       VCID: 46BB14A2F106C772C6-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 76: Park Assist        Labels: 4Fx-910-283.lbl
       Part No SW: 4L0 910 283 B    HW: 4L0 919 283 B
       Component: Parkhilfe 4-Kan H03 0500  
       Revision: 00H03000    Serial number: 37231103106109
       Coding: 0210016
       Shop #: WSC 02323 785 00200
       VCID: 2961BF1E8058080ACB-807C
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 02:27)--------------------------

  8. #6
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    okj so here is some additional information.

    I measured at the contact to the light and found that it was steady 12v on pin 1 when the car was off. So i dismounted that pin and hooked it into the light again and now I dont have steady light when the car is off. And when I turn on the car, It will warn me for broken left brake lights.

    So then we can exclude the light it self from the problem and look towards to my comfort module. could it be broken? Why does it feed my left brake light with 12v all the time?

    Regards

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  10. #7
    NostraJackAss Jack@European_Parts's Avatar
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    Very good....... I like that you are isolating......now lets trace that hot wire back to where it is picking up that 12 volts or isolate further using WD at module.

    A tone generator comes in very handy here...........

    Before condemning the module inspect it!
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

  11. #8
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    I have now checked the wiring schema for my car and the hot wire goes directly to my comfort module, only passing connection T10ab. So it has to be my comfort module that have braked down and cant switch of the brake light voltage.
    Now I will open my comfort module to see if their is any chipset that doesnt work as they should.

    And it is nice and dry their as well.

  12. #9
    Verified VCDS User iichel's Avatar
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    is there a permament plus somewhere running to the hatch? wires in the rubber grommets could have maybe worn, and lost their insulation. then a permanent plus is rubbing against your wire to the brake wire bulb.

    what happens if you connect the plug T10ab completely from the convenience module. does the light go off then? if it stays on, you can have a look at your wiring loom.

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  14. #10
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    Hi,

    I will check that when I get home, but I think that it is unlikly cause all wire looms are xtra isolated with isolation tape so that it will reduce noises.

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