Trailer tail light errors (left and right) after trailer retrofit

   #1  

jordy_wd

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Hello,

I retrofitted a Genuine Westfalia trailer module to my 2014 Octavia VRS about 3 years ago. All lights work correctly and the car brings up the trailer on the rear view camera etc. As far as I can see, all coding is correct. I've been towing without issue since I installed it.

The only problem is that it brings up a bulb check for the trailer tail lights (left and right) every single time the trailer is plugged in. The lights all work without issue and I've never even had a bulb out.

I've just checked the ground wires to both rear light units on the trailer and they're all fine.

I can only think that the coding is wrong, or I've made a minor error when retrofitting? I've attached a photo below of the right-hand trailer light for info. Perhaps it is behaving like this because one bulb serves two functions (tail light and brake light)?



I also have the rear lights (on the vehicle) set to turn on with DRLs as per this adaptation change:

Code:
Controller 09 - Central Electronics

16 - Security Access - enter 31347

10 - Adaptations

(6)-Daytime running lights-Tagfahrlicht-Dauerfahrlicht aktiviert zusaetzlich Standlicht - change to active

Full scan:

Code:
Friday,19,August,2022,07:45:48:31540
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 22.3.1.4  HEX-V2 CB: 0.4615.4
Data version: 20220407 DS337.0
www.Ross-Tech.com


VIN: TMBKK7NE4F005****   License Plate:


Chassis Type: NE-SK37 (5Q0)
Scan: 01 03 08 09 10 15 16 17 19 42 44 52 55 5F 69 A5 A9

VIN: TMBKK7NE4F005****   Mileage: 142826km-88747miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- 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
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
69-Trailer -- Status: Malfunction 0010
A5-Frt Sens. Drv. Assist -- Status: OK 0000
A9-Struct. Borne Sound -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CUPA)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 021 EL    HW: 04L 907 309 D
   Component: R4 2,0L EDC   X22 7542 
   Revision: 83X22---    CVN: 7ED3A2D0
   Coding: 12190012033501080000
   Shop #: WSC 92521 052 12345
   ASAM Dataset: EV_ECM20TDI01104L906021EL 002008
   ROD: EV_ECM20TDI01104L906021EL_SK37.rod
   VCID: 73B3DCC20B329BD3C2D-8026
   VINID: 91D49B6C77951160001420C31879F6F90F

1 Fault Found:
17158 - Databus
          U1123 00 [047] - Received Error Message
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 6
                    Mileage: 142816 km
                    Date: 2022.08.18
                    Time: 16:48:09

                    Engine RPM: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 77 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 12.100 V
                    Unlearning counter according OBD: 40
                    Drivetrain coordinator: ACC fault status-Bits 0-7: 0
                    Drivetrain coordinator: ACC fault status-Bits 0-7: 0
                    Drivetrain coordinator: brake fault status-Bits 0-7: 17
                    Drivetrain coordinator: brake function status-Bits 0-7: 0
                    Drivetrain coordinator: brake function status-Bits 0-7: 0
                    Acceleration: 0.000 m/s²

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-ESP-V1.clb
   Part No SW: 5Q0 907 379 K    HW: 5Q0 907 379 F
   Component: ESC           H31 0371 
   Revision: 00000000    Serial number: 61854000005022
   Coding: 1C0793915425096E007A060341C92938C92A9000608294F400630070C009
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_Brake1UDSContiMK100ESP 033001
   ROD: EV_Brake1UDSContiMK100ESP_033_VW37.rod
   VCID: 44D14F1E1E1C6C6BAB7-8010

1 Fault Found:
8314 - Check Coding of ECUs on Powertrain Data Bus
          P1647 00 [009] - -
          [FCAN: Coding of ESP and TSK does not fit together]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 6
                    Reset counter: 61
                    Mileage: 142816 km
                    Date: 2022.08.18
                    Time: 16:48:09


-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5G0-907-044.clb
   Part No SW: 5E0 907 044 N    HW: 5E0 907 044 N
   Component: Climatronic   H03 0907 
   Revision: 00001K06   
   Coding: 02110104000100011005000110101000
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_ACClimaBHBVW37X 003017
   ROD: EV_ACClimaBHBVW37X_003_VW37.rod
   VCID: 303913CEBAA4E0CB7FF-8064

   Fresh air blower control module (front):

   A/C pressure/coolant temperature sensor:

   Air quality sensor:

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:| 5Q0-937-08X-HV1.clb
   Part No SW: 5Q0 937 086 AA    HW: 5Q0 937 086 AA
   Component: BCM PQ37BOSCH 028 0106 
   Revision: --------    Serial number: 86581907140222
   Coding: 0F020B66C24722FB03A04082B11C07280000000000000000000000000000
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_BodyContrModul1UDSBosc 013005
   ROD: EV_BCMBOSCH_013.rod
   VCID: 79AFEEEA295EE183881-802C

   Wiper motor control module:
   Subsystem 1 - Part No SW: 5E2 955 119     HW: 5E2 955 119   Labels: 5QX-955-119-V1.CLB
   Component: WWS371 140703  041 0570
   Serial number:         140708022021
   Coding: 0E4DFD

   Rain/Light Recognition Sensor:
   Subsystem 2 - Part No SW: 5Q0 955 547 A    HW: 5Q0 955 547 A  Labels: 5Q0-955-547.CLB
   Component: RLHS  037 0059
   Serial number: S4Y14M07D21H17M26S53
   Coding: 04805D

   Anti-theft alarm system sensor:
   Subsystem 3 - Part No SW: 5Q0 951 171     HW: 5Q0 951 171
   Component: Sensor, DWA  005 0315
   Serial number: 000000000ZY1410524F1

   Alarm horn:
   Subsystem 4 - Part No SW: 5Q0 951 605     HW: 5Q0 951 605
   Component: Sirene, DWA  004 0311
   Serial number: 00000000000030191858

   Humidity sensor: interior:

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J791)       Labels:| 5Q0-919-283.clb
   Part No SW: 5Q0 919 283 D    HW: 5Q0 919 283
   Component: PARKHILFE 4K  H10 0048 
   Revision: --------    Serial number: 39231419703182
   Coding: 0001150101
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_EPHVA14AU3700000 002022
   ROD: EV_EPHVA14AU3700000_002_VW37.rod
   VCID: 3A2D31E66CD82A9BC1B-806E

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 3Q0 959 655 AC    HW: 3Q0 959 655 AC
   Component: Airbag VW20   012 0189 
   Revision: --------    Serial number: 003P4PDGZJJU
   Coding: 98CCC000000000005C5400CC008800000065
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_AirbaVW20TS6VW48X 001116
   ROD: EV_AirbaVW20TS6VW48X.rod
   VCID: 7F5B00F2377ACFB3B65-802A

   Crash sensor for side airbag: driver side:
   Subsystem 1 - Part No SW: -----------    HW: 454 000 907 14
   Component: SideSensor_Df  008 0887
   Serial number: 3576U000000F3D144016
   Coding: 2D2D2D

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 2 - Part No SW: -----------    HW: 454 000 507 14
   Component: SideSensor_Pf  008 0887
   Serial number: 3586U000000DD6013013
   Coding: 2D2D2D

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 3 - Part No SW: -----------    HW: 454 801 207 14
   Component: SideSensor_Dr  111 0148
   Serial number: 3516R61001B04000000M
   Coding: 2D2D2D

   Passenger side rear thorax airbag crash sensor:
   Subsystem 4 - Part No SW: -----------    HW: 454 802 906 14
   Component: SideSensor_Pr  111 0148
   Serial number: 3526R78F60D04000000A
   Coding: 2D2D2D

   Crash sensor for front airbag: driver side:
   Subsystem 5 - Part No SW: -----------    HW: 454 802 105 14
   Component: FrontSensor_D  114 0149
   Serial number: 3556V86F6B003000000D
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 507 AC    HW: 5Q0 953 549
   Component: Lenks. Modul  007 0070 
   Revision: --------    Serial number: 18071404220547
   Coding: 1400
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_SMLSKLOMQB 009001
   ROD: EV_SMLSKLOMQB_009_VW37.rod
   VCID: 77ABE8D21F4AF7F3FE5-8022

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5G0-920-XXX-17.clb-SRI3
   Part No SW: 5E0 920 947     HW: 5E0 920 947
   Component: KOMBI         204 4290 
   Coding: 27AD09006980AE0001007A021000000000000000
   Shop #: WSC 73430 031 00161
   ASAM Dataset: EV_DashBoardVDDMQBAB 009040
   ROD: EV_DashBoardVDDMQBAB_009_VW26.rod
   VCID: 698FBEAA59FE5103781-803C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 5Q0-907-530-V1.clb
   Part No SW: 5Q0 907 530 T    HW: 5Q0 907 530 F
   Component: GW MQB High   128 1188 
   Revision: --------    Serial number: 0002223796
   Coding: 030100040F087300EF00026A080F00010001050000000000000000000000
   Shop #: WSC 73430 790 00161
   GVL: 01543C1000000000C08C10000000480000000000000000000000000000000000
   ASAM Dataset: EV_GatewLear 011016
   ROD: EV_GatewLear_011.rod
   VCID: 42DD49060408625B99B-8016

   Generator:

   Multifunction steering wheel control module:
   Subsystem 2 - Part No SW: 5E0 919 719 A    HW: 5E0 919 719 A
   Component: E221__MFL-PR6  H04 0130
   Serial number: 000000000A2011260614

   Battery Monitoring Control Module:
   Subsystem 3 - Part No SW: 5Q0 915 181 E    HW: 5Q0 915 181 E
   Component: J367-BDMHella  H03 8043
   Serial number: 1428593903         

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q4 959 393 B    HW: 5Q4 959 393 B
   Component: TSG FS        009 0014 
   Serial number: 0000111140715
   Coding: 001C00208001040000001100
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_DCUDriveSideEWMAXCONT 006001
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: 42DD49060408625B99B-8016

   Rear Driver Side Door Control Module:
   Subsystem 1 - Part No SW: 5Q0 959 812 A    HW: 5Q0 959 812 A  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_DRV  005 0005
   Serial number: 00000000000003267211
   Coding: 1D0200

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 3Q0 909 144 F    HW: 3Q0 909 144 F
   Component: EPS_MQB_ZFLS  503 5043 
   Coding: 9103
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_SteerAssisMQB 010031
   ROD: EV_SteerAssisMQB_010.rod
   VCID: 353722DA45C6C5E32C9-8060

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q4 959 392 B    HW: 5Q4 959 392 B
   Component: TSG BFS       009 0014 
   Serial number: 0000111534605
   Coding: 001C00200C01040000001100
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_DCUPasseSideEWMAXCONT 006001
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: 41DF460A010E7943801-8014

   Rear Passenger Door Control Module:
   Subsystem 1 - Part No SW: 5Q0 959 811 A    HW: 5Q0 959 811 A  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_PSG  005 0005
   Serial number: 00000000000003279086
   Coding: 050200

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J745)       Labels:| 7P6-907-357.clb
   Part No SW: 7P6 907 357 D    HW: 7P6 907 357 A
   Component: AFS-ECU       H07 0090 
   Revision: --------    Serial number: --------------
   Coding: 03DE02003F000000
   Shop #: WSC 73430 790 00063
   ASAM Dataset: EV_HeadlRegulVWAFSMQB 001120
   ROD: EV_HeadlRegulVWAFSMQB.rod
   VCID: 40D9430E0A04704B8FF-8014

   Left Headlamp Power Output Stage:
   Subsystem 1 - Part No SW: 1T0 941 329 B    HW: 1T0 941 329 B  Labels: 3D0-941-329.CLB
   Component: LeiMo links  H06 0009
   Coding: 3E0000

   Right Headlamp Power Output Stage:
   Subsystem 2 - Part No SW: 1T0 941 329 B    HW: 1T0 941 329 B  Labels: 3D0-941-329.CLB
   Component: LeiMo rechts  H06 0009
   Coding: 3E0000

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5E0-035-MIB-STD1.clb
   Part No SW: 5E0 035 874 A    HW: 5E0 035 874 A
   Component: MU-S-ND-ER    041 0490 
   Serial number: S7F01607143599
   Coding: 03735201FF0000001111120100A800002F0101D601000100C6
   Shop #: WSC 19460 666 12345
   ASAM Dataset: EV_MUStd4CPASE 002039
   ROD: EV_MUStd4CPASE_VW37.rod
   VCID: 2615F5968860BE7B953-8072

   Display and control head 1 for information electronics:
   Subsystem 1 - Part No SW: 5E0 919 605 D    HW: 5E0 919 605 D
   Component: ABT_Std_Nav  H60 0034
   Serial number: SKZ8Z9PT300602     

   Data carrier:
   Subsystem 2 - Part No SW: V03 959 807 NT    HW: -----------
   Component:  ECE 2020/21  --- 0094
   Serial number: --------------------

1 Fault Found:
1555 - Check Software Version Management
          B201A 00 [009] - -
          [Check software version management]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 60
                    Mileage: 142816 km
                    Date: 2022.08.18
                    Time: 16:48:06

                    Voltage terminal 30: 12.0 V


-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:| 5Q0-907-383.clb
   Part No SW: 5Q0 907 383 J    HW: 5Q0 907 383 B
   Component: Anhaenger     H21 0204 
   Revision: 8C001003    Serial number: 0409994950
   Coding: 0100000000000000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_TrailFunctGener2Hella 001008
   ROD: EV_TrailFunctGener2Hella_VW26.rod
   VCID: 3E253DF670F006BBFD3-806A

2 Faults Found:
656138 - Bulb for Right Tail Light on Trailer
          C10F4 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 61
                    Mileage: 142826 km
                    Date: 2022.08.19
                    Time: 13:28:40

656394 - Bulb for Left Tail Light on Trailer
          C10F5 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 61
                    Mileage: 142826 km
                    Date: 2022.08.19
                    Time: 13:28:40


-------------------------------------------------------------------------------
Address A5: Frt Sens. Drv. Assist (R242)       Labels:| 5Q0-980-653.clb
   Part No SW: 5Q0 980 653 F    HW: 5Q0 980 653
   Component: MQB_MFK       H06 0052 
   Serial number: 10000106201   
   Coding: 0100010001030303000300000000010101
   Shop #: WSC 73430 790 00161
   ASAM Dataset: EV_MFKBoschAU370 001001
   ROD: EV_MFKBoschAU370.rod
   VCID: 3B2334E263E21393DAD-806E

No fault code found.

-------------------------------------------------------------------------------
Address A9: Struct. Borne Sound (J869)       Labels: 4H0-907-159.clb
   Part No SW: 5E0 907 159     HW: 4H0 907 159 A
   Component: SAS-GEN 2     H06 0001 
   Serial number: 140620201151
   ASAM Dataset: EV_SoundActuaGen2AU64X 003010
   ROD: EV_SoundActuaGen2AU64X.rod
   VCID: 698FBEAA59FE5103781-803C

No fault code found.

End----------(Elapsed Time: 01:43, VBatt start/end: 12.2V/12.2V)-----------
 
   #2  

Uwe

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What kind of lamps/bulbs does the trailer have?

-Uwe-
 
   #3  

jordy_wd

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Hi Uwe, I’ve posted a photo above of the type of tail light, and the bulbs are 12V P21/5W Twin Filament Bulbs. Thanks.
 
   #4  

RGH0

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Are the brake and tail lights connected correctly ? if swapped it may give a problem due to different wattage. However most likely due to a faulty earth.
 
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