So, last weekend I was trying to diagnose why my new RLS from eBay would not be recognized. I proceeded to disconnect BCM connector C and tested for continuity between the respective pin and the other end of my RLS wiring harness. I must say I inserted a thin wire into the BCM pins (including some grounds) in order to have something to touch with the multimeter probe. Ended up reconnecting everything, as the wiring seemed to be correct.
So here the problem begins: the car shows no error whatsoever before firing the ignition and even after starting the engine; I can even drive around without any problems, but as soon as I turn on the headlights, all kinds of errors show up at the MFD and the BCM enters limp mode. With OBDeleven, I could only get one error code: C10CA00, Limp home active.
I suspect that this might be a grounding issue... Maybe some terminals got loose and no longer make good contact with the BCM, so I tried reconnecting and inspecting the terminals several times with no success. Any tips on how to debug this are welcome!
Thanks in advance!
Code: Select all
OBDeleven vehicle history log
Date: 2021-02-14 13:18
VIN: WVWZZZ6RZFY2*****
Car: Volkswagen Polo
Year: 2015
Body type: 5-dr hatchback
Engine: CUSA
Mileage: 110396 KM
---------------------------------------------------------------
Backup
Control unit: 01 Engine
System description: R3 1.4l TDI
Software number: 04B997027F
Software version: 9436
Hardware number: 04B907445
Hardware version: H07
ODX name: EV_ECM14TDI03004B997027F
ODX version: 004003
Backup name: Engine
Long coding:
01114012422401080000
---------------------------------------------------------------
Backup
Control unit: 03 Brakes
System description: ESP9.0i
Software number: 6C0907379G
Software version: 0003
Hardware number: 6R0907379BA
Hardware version: H03
Serial number: 08504802150310
ODX name: EV_Brake1ESP90iBOSCHPQ26
ODX version: 100018
Backup name: Brakes
Long coding:
21DD2485892C33C10915106A0055842491CC90080007C9098F00
---------------------------------------------------------------
Backup
Control unit: 08 Air Conditioning
System description: AC Manuell
Software number: 6C0820045A
Software version: 0108
Hardware number: 6C0820045A
Hardware version: H03
Serial number: 1502251B-0995
ODX name: EV_ACManueKMMValeoPQ26
ODX version: 002001
Backup name: Air Conditioning
Long coding:
201000001000000200
---------------------------------------------------------------
Backup
Control unit: 09 Central Electrics
System description: BCM PQ26 Hi4R
Software number: 6C0937089B
Software version: 0065
Hardware number: 6C0937089
Hardware version: H07
Serial number: 001098083141
ODX name: EV_BCMA0
ODX version: 004008
Backup name: Central Electrics
Long coding:
000008404253025B4B8440004027038800005B0251010000000000000000
---------------------------------------------------------------
Backup
Control unit: 15 Airbag
System description: VW20Airbag01B
Software number: 6C0959655A
Software version: 0330
Hardware number: 6C0959655A
Hardware version: 001
Serial number: 003LM009L6VR
ODX name: EV_AirbaVW20BPAVW26X
ODX version: 001001
Backup name: Airbag
Long coding:
88C0C000000000005C0000CA000800000000
---------------------------------------------------------------
Backup
Control unit: 17 Dashboard
System description: KOMBI
Software number: 6C0920741A
Software version: 0290
Hardware number: 6C0920741A
Hardware version: 211
ODX name: EV_DashBoardVDDMQBAB
ODX version: 009040
Backup name: Dashboard
Long coding:
072409002180000800087A001000000000000000
---------------------------------------------------------------
Backup
Control unit: 19 Gateway
System description: GW MQB A0
Software number: 6C0909901
Software version: 0065
Hardware number: 6C0937089
Hardware version: H07
Serial number: 001098083141
ODX name: EV_GatewA0Lear
ODX version: 001001
Backup name: Gateway
Long coding:
030100045F0A590071000000000000010001010000000000000000000000
---------------------------------------------------------------
Backup
Control unit: 44 Steering Assistance
System description: EPS_TRW_ALow
Software number: 6C1909144M
Software version: 3211
Hardware number: 6C1909144D
Hardware version: 312
Serial number: PF320608
ODX name: EV_SteerAssisUDSTRW
ODX version: 011021
Backup name: Steering Assistance
Long coding:
0007
---------------------------------------------------------------
Backup
Control unit: 5F Multimedia
System description: MU-S-N-ER
Software number: 3Q0035864
Software version: 0137
Hardware number: 3Q0035864
Hardware version: H10
Serial number: VWZAZ2R8538963
ODX name: EV_MUStd4CTSAT
ODX version: 001018
Backup name: Multimedia
Long coding:
02620001BE00000011110001000808001F01008401200100C4
---------------------------------------------------------------
Backup
Control unit: 76 Parking Assistance
System description: PARKHILFE 8K
Software number: 5Q0919294K
Software version: 0054
Hardware number: 5Q0919294A
Hardware version: H03
Serial number: 39391603503911
ODX name: EV_EPHVA18AU3700000
ODX version: 002026
Backup name: Parking Assistant
Long coding:
0031051041