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Thread: How do I activate the rear fog lights? (2010 A3 8PA)

  1. #1
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    How do I activate the rear fog lights? (2010 A3 8PA)

    Dear All,

    I own a 2010 Audi A3 2.0T Premium Plus. My car has Xenon, DRL but no Auto sensor or come home. I moved the car to Europe and in order to pass the local inspection I need to activate the rear fog lights. I would like to avoid changing the light fixtures.

    After reading around I got the necessary switch (8P1941531BQ) and now I will have to do the necessary coding. I tried what is written here ( https://oooo-a3.blogspot.com/2005/11...og-lights.html ) but the information refers to an older A3 and does not seem to apply to mine.

    Has anyone done this? Could you please share the right procedure for changing the coding? If it helps the current coding of the central electronics module from VCDS is:

    2E000A3FB83336E4287241E000100D4D411E62AA104DD929E4 0008840040

    Thanks in advance

    Dimitris

  2. #2
    Verified VCDS User PetrolDave's Avatar
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    A full Auto-Scan would be more helpful.

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  4. #3
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    Quote Originally Posted by PetrolDave View Post
    A full Auto-Scan would be more helpful.
    Here it goes:

    Code:
    Sunday,27,January,2019,12:30:26:16569
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 18.9.1.0 (x64)
    Data version: 20190114 DS296.0
    www.Ross-Tech.com
    
    
    VIN: WAUKFBFM6AA101369   License Plate: 
    Mileage: 58830km-36555mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: FM (1K0)
    Scan: 01 02 03 08 09 0F 15 16 17 19 25 42 44 46 47 52 55 56 62 65
              72 77
    
    VIN: WAUKFBFM6AA101369   Mileage: 58830km-36555miles
    
    01-Engine -- Status: Malfunction 0010
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: Malfunction 0010
    0F-Digital Radio -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    47-Sound System -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    65-Tire Pressure -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    77-Telephone -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (CCT)       Labels:. 06J-906-026-CCT.clb
       Part No SW: 8P0 907 115 AM    HW: 8P0 907 115 Q
       Component: 2.0l R4/4V TFSI     0020  
       Revision: AAH11---    Serial number: AUX7Z0INFNO0E8
       Coding: 0103010A1C070160
       Shop #: WSC 06314 000 00000
       VCID: 7DDF21B024B1D7A2B6-8028
    
    1 Fault Found:
    001674 - ECM Power Relay Load Circuit 
                   P068A - 000 - Opens Too Early - Intermittent
                 Freeze Frame:
                        Fault Status: 00100000
                        Fault Priority: 0
                        Fault Frequency: 1
                        Reset counter: 255
                        Time Indication: 0
                        Date: 2047.15.31
                        Time: 31:63:63
    
                 Freeze Frame:
                        RPM: 0 /min
                        Load: 0.0 %
                        Speed: 0.0 km/h
                        Temperature: 19.0C
                        Temperature: 18.0C
                        Absolute Pres.: 1000.0 mbar
                        Voltage: 8.636 V
    
    Readiness: 0110 0101
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 053 N    HW: 02E 927 770 AL
       Component: GSG DSG AG6     511 2235  
       Revision: 05151112    Serial number: 00000911200907
       Coding: 0000020
       Shop #: WSC 06314 000 00000
       VCID: 206138C4F3835A4AFD-8074
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
       Part No SW: 1K0 907 379 AJ    HW: 1K0 907 379 AJ
       Component: ESP MK60EC1   H30 0107  
       Revision: 00H30001    
       Coding: 1150600F492200FB880E06EA92220041390800
       Shop #: WSC 06314 000 00000
       VCID: 7AD52AACF59FE09A93-802E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 8P0-820-043.lbl
       Part No SW: 8P0 820 043 BK    HW: 8P0 820 043 BK
       Component: KlimavollautomatH09 0140  
       Revision: 000066      Serial number: 8P0820043BK   
       Shop #: WSC 00000 000 00000
       VCID: 76CD3E9C018784FAF7-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 8P0-907-063.clb
       Part No SW: 8P0 907 063 D    HW: 8P0 907 063 D
       Component: BCM PQ35  M   105 0573  
       Revision: 00105 AJ    
       Coding: 2E000A3FB83336E4287241E000100D4D411E62AA104DD929E40008840040
       Shop #: WSC 06314 000 00000
       VCID: 354FF9909C01CFE23E-8060
    
       Subsystem 1 - Part No SW: 8P1 955 119 F    HW: 8P1 955 119 F  Labels: 1KX-955-119.CLB
       Component: Wischer AU350  H10 0040 
       Coding: 00DD13
    
       Subsystem 2 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HO  H05 1501 
    
    2 Faults Found:
    00907 - Intervention load Management 
                000 -  -  - Intermittent
                 Freeze Frame:
                        Fault Status: 00100000
                        Fault Priority: 6
                        Fault Frequency: 1
                        Reset counter: 55
                        Mileage: 58824 km
                        Time Indication: 0
                        Date: 2019.01.25
                        Time: 16:19:53
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 10.95 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            OFF
    
    01134 - Alarm Horn (H12) 
                002 - Lower Limit Exceeded - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 4
                        Fault Frequency: 1
                        Reset counter: 55
                        Mileage: 58824 km
                        Time Indication: 0
                        Date: 2019.01.25
                        Time: 16:35:29
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 8.90 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            ON
    
    
    -------------------------------------------------------------------------------
    Address 0F: Digital Radio        Labels: 8E0-035-593-SIR.lbl
       Part No SW: 8E0 035 593 P    HW: 8E0 035 593 P
       Component: SDAR SIRIUS     H07 0160  
       Revision: 00000000    Serial number: AUZ4Z7J0560347
       Coding: 0000100
       Shop #: WSC 06314 000 00000
       VCID: 364DFE9C4107C4FA37-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags
    Cannot be reached
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 8P0-953-549.lbl
       Part No SW: 8P0 953 549 K    HW: 8P0 953 549 K
       Component: J0527           H37 0070  
       Coding: 0014142
       Shop #: WSC 06314 000 00000
       VCID: 46AD8E5C31E7547AA7-8012
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           H02 0030
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8P0-920-xxx-17-MY8.clb
       Part No SW: 8P0 920 982 N    HW: 8P0 920 982 N
       Component: KOMBIINSTR. VDO H03 0990  
       Revision: D0H03004    Serial number: 224NI004001384
       Coding: 0016288
       Shop #: WSC 63411 001 1048576
       VCID: 44A9945407DB666AB9-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels:. 1K0-907-530-V4.clb
       Part No SW: 1K0 907 530 AD    HW: 1K0 907 951 
       Component: J533  Gateway   H16 0231  
       Revision:   H16       Serial number: 4320K09B2300F5
       Coding: ED817F07100702000102
       Shop #: WSC 00237 211 99201
       VCID: 69F765E040395B026A-803C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No SW: 8P0 920 982 N    HW: 8P0 920 982 N
       Component: KOMBIINSTR. VDO H03 0990  
       Revision: D0H03004    Serial number: AUX7Z0INFNO0E8
       Shop #: WSC 00000 000 00000
       VCID: 44A9945407DB666AB9-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 8P0-959-801-MIN3.lbl
       Part No SW: 8P0 959 801 N    HW: 8P0 959 801 N
       Component: Tuer-SG         H04 0100  
       Coding: 0001181
       Shop #: WSC 06314 000 00000
       VCID: 46AD8E5C31E7547AA7-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
       Part No: 1K0 909 144 J
       Component: EPS_ZFLS Kl. 233    3001  
       Revision: 00H17000    
       Shop #: WSC 02069 000 90108
       VCID: 3147CD80A869E3C262-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 47: Sound System        Labels: 8Px-035-382.lbl
       Part No SW: 8P4 035 382 E    HW: 8P4 035 382 E
       Component: AB2 SUBWOOFERBOXH07 0180  
       Revision: 00006       Serial number: 92158954802964
       Shop #: WSC 00000 000 00000
       VCID: 364DFE9C4107C4FA37-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
       Part No SW: 8P0 959 802 N    HW: 8P0 959 802 N
       Component: Tuer-SG         H04 0100  
       Coding: 0001181
       Shop #: WSC 06314 000 00000
       VCID: 47B3835836ED4D725C-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 8P0-907-357.lbl
       Part No: 8P3 907 357 
       Component: Dynamische LWR  H01 0010  
       Revision: 00000001    Serial number:               
       Coding: 0000013
       Shop #: WSC 06314 000 00000
       VCID: 7AD52AAC359FE09A93-802E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio        Labels: 8J0-035-1xx-56.clb
       Part No SW: 8P0 035 186 T    HW: 8P0 035 186 T
       Component: R Concert2+     H03 0280  
       Revision: 00H03000    Serial number: AUZ1Z3I5338123
       Coding: 0750112
       Shop #: WSC 00237 211 99201
       VCID: 43AB974802D5615280-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels: 8P4-959-801.lbl
       Part No SW: 8P4 959 801 F    HW: 8P4 959 801 F
       Component: Tuer-SG         H04 0050  
       Coding: 0001176
       Shop #: WSC 06314 000 1012544
       VCID: 42A5924C1DCF685A8B-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 65: Tire Pressure        Labels: 8J0-907-273.lbl
       Part No SW: 8J0 907 273 A    HW: 8J0 907 273 A
       Component: J502-RDK        H03 0370  
       Revision: --H03-H0    Serial number: 13373791702325
       Coding: 0860021
       Shop #: WSC 06435 000 00000
       VCID: 2F43CBF8BE5DF53274-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels: 8P4-959-802.lbl
       Part No SW: 8P4 959 802 F    HW: 8P4 959 802 F
       Component: Tuer-SG         H04 0050  
       Coding: 0001176
       Shop #: WSC 06314 000 1012544
       VCID: 43AB974802D5615280-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone        Labels: 8P0-862-335.lbl
       Part No SW: 8P0 862 335 AB    HW: 8P0 862 335 T
       Component: FSE_256x BT     H38 0600  
       Revision: 00000000    Serial number: 00000005030037
       Coding: 0001277
       Shop #: WSC 06314 000 00000
       VCID: 76CD3E9C018784FAF7-8022
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 01:37)--------------------------
    Last edited by Uwe; 01-29-2019 at 03:38 PM. Reason: CODE tags

  5. #4
    Ross-Tech Employee Dana's Avatar
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    Since this vehicle uses a (Mk6 Golf based) PQ35 BCM you will need to change Byte 18 and I suspect you will need to add the trigger wire from the headlight switch to the BCM.

    Switching:
    Although you would want to compare the instructions to your factory wiring diagram I believe this will help:

    https://forums.vwvortex.com/showthre...thout-Rear-Fog.

    That thread, in addition to similar taillight specific (2012 Golf R and Non-LED Rear Fog Light) links, can be found in post #1 of this old VW Vortex thread:

    https://forums.vwvortex.com/showthre...-Coding-tweaks

    Coding:
    Byte 18 can be nasty when the original value was covered (hidden) by zeros. As long as you haven't modified the codng already it woudl appear as if your original value was not masked:
    62: Audi A3 Sportback (8PA) with Xenon & LED DRLs (Front) North American Region (NAR)

    Based on the description I believe this RoW option would enable rear fog after swapping any needed tail light components, wiring and adding the RFL switch:
    2B: Audi A3 Sportback (8PA) with Xenon & LED DRLs (Front) Rest of World (RoW)

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  7. #5
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    Dear All,

    It has been some time, but, in case anyone is interested, the right solution was to change Byte 18 from 62 to 2C and of course swap the light switch. No wiring was necessary. An experienced mechanic in The Hague (https://www.cartronic.nl/) fixed it in ~10min at minimal cost. The resulting coding of Cent. Elec.:

    2E000A3FB83336E4287241E000100D4D411E2CAA104DD929E4 0008840040

    Regards

    Dimitris

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