So I have this annoying fault code on the radio/media/nav unit (5F) aka "RMC" which seems to point to a comms problem in relation to instruments.
Strangely on the auto scan there is indication that the instruments (17) cannot be reached, but I can access it directly via VCDS easily.
When clearing the fault on 5F it returns in matter of seconds with same presentation.
No apparent loss of functionality that I can ascertain - there is clearly communications from the RMC to cluster in terms of what media is being played or nav info so its a bit odd.
I did run the optical bus diagnostics which does point to a fault:
Thursday,03,June,2021,14:28:01:30756
VCDS Version: Release 21.3.0
Control Module Part Number: 4G5 907 468 A
Component and/or Version: J533--Gateway H10 0028
Optical Bus Diagnostic : Standard
Controller Electrical Optical
CAN Gateway OK OK
Information Electr. OK OK
Instruments ERROR ERROR
Sound System OK OK
I have not recently changed any coding anywhere on the car so it points to some HW fault or poor connectivity.
To my knowledge neither the RMC or instruments have been removed.
I did lift the rear seat and checked the optical plugs on the CAN gateway are secure and there is no visible dirt at least.
Any pointers or next steps welcome as a general search of the 03157 fault didn't reveal anything useful in terms of corrective action !
Full scan below.
Eagle eyed viewers will see the BCM is coded for BiXenons (which I retrofitted and documented here as working fine a long time ago). I also added a higher spec gateway (well the dealership had to activate that thanks to the anti-DIY tactics of component protection) along with the adaptive headlamp controller which also all worked perfectly. After some months this communications error cropped up and I suspected it was caused by the 'new' CAN gateway causing some odd behaviour so I swapped back to the original factory gateway and verified the fault is still there... obviously this gateway doesn't have the CAN connection to the headlamp level controller (55).
Strangely on the auto scan there is indication that the instruments (17) cannot be reached, but I can access it directly via VCDS easily.
When clearing the fault on 5F it returns in matter of seconds with same presentation.
No apparent loss of functionality that I can ascertain - there is clearly communications from the RMC to cluster in terms of what media is being played or nav info so its a bit odd.
I did run the optical bus diagnostics which does point to a fault:
Thursday,03,June,2021,14:28:01:30756
VCDS Version: Release 21.3.0
Control Module Part Number: 4G5 907 468 A
Component and/or Version: J533--Gateway H10 0028
Optical Bus Diagnostic : Standard
Controller Electrical Optical
CAN Gateway OK OK
Information Electr. OK OK
Instruments ERROR ERROR
Sound System OK OK
I have not recently changed any coding anywhere on the car so it points to some HW fault or poor connectivity.
To my knowledge neither the RMC or instruments have been removed.
I did lift the rear seat and checked the optical plugs on the CAN gateway are secure and there is no visible dirt at least.
Any pointers or next steps welcome as a general search of the 03157 fault didn't reveal anything useful in terms of corrective action !
Full scan below.
Eagle eyed viewers will see the BCM is coded for BiXenons (which I retrofitted and documented here as working fine a long time ago). I also added a higher spec gateway (well the dealership had to activate that thanks to the anti-DIY tactics of component protection) along with the adaptive headlamp controller which also all worked perfectly. After some months this communications error cropped up and I suspected it was caused by the 'new' CAN gateway causing some odd behaviour so I swapped back to the original factory gateway and verified the fault is still there... obviously this gateway doesn't have the CAN connection to the headlamp level controller (55).
Code:
Thursday,03,June,2021,15:22:27:30756
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86(Parallels)
VCDS Version 21.3.0.0 HEX-NET CB: 0.4543.4
Data version: 20210226 DS325.0
www.Ross-Tech.com
VIN: WAUZZZ4G9DN00xxxx License Plate:
Chassis Type: 4G-AU57 (4G5)
Scan: 01 02 03 05 08 09 10 15 16 17 19 28 34 3B 42 44 46 47 52 53
5F 62 72
VIN: WAUZZZ4G9DN00xxxx Mileage: 178037km-110627miles
01-Engine -- Status: OK 0000
02-Auto Trans -- 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
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Cannot be reached 0100
19-CAN Gateway -- Status: OK 0000
28-HVAC, Rear -- Status: OK 0000
34-Level Control -- Status: OK 0000
3B-Sensor Elect. -- 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
53-Parking Brake -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CLAA) Labels:. 059-907-401-V2.clb
Part No SW: 4G0 907 311 E HW: 4G0 907 401
Component: 3.0TDI EDC17 H37 0001
Revision: 53H37---
Coding: 32254012052F09020000
Shop #: WSC 50290 003 104857
ASAM Dataset: EV_ECM30TDI0114G0907311E 001001
ROD: EV_ECM30TDI0114G0907311E.rod
VCID: A5027538A499A2A310-80F1
No fault code found.
Readiness: 0 0 0 0 1
-------------------------------------------------------------------------------
Address 02: Auto Trans (J217) Labels:| 0B5-927-156.clb
Part No SW: 4G1 927 156 Q HW: 0B5 927 156 K
Component: 0B5 30 TDIRdW H08 0009
Revision: --H08---
Coding: 000001
Shop #: WSC 04940 001 00001
ASAM Dataset: EV_TCMDL501021 001025
ROD: EV_TCMDL501021.rod
VCID: BB36B340321D045356-80EF
No fault code found.
-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 4G0-907-379-V1.clb
Part No SW: 4G0 907 379 H HW: 4G0 907 379 H
Component: ESP PREMIUM H09 0361
Revision: -------- Serial number: --------------
Coding: 27A6C705E465E3A0CB00
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_ESPPremiAU57X 004028
ROD: EV_ESPPremiAU57X_004_AU57.rod
VCID: B620A274093FD93BA9-80E3
No fault code found.
-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393) Labels:. 8K0-907-064-05.clb
Part No SW: 4H0 907 064 FG HW: 4H0 907 064 BG
Component: BCM2 2.0 H31 0560
Revision: 00002001
Coding: 01B93006000000000000
Shop #: WSC 53484 001 1048576
VCID: F3A65B6052CD8C134E-80A7
Subsystem 2 - Part No SW: 4H0 905 852 C HW: 4H0 905 852 C
Component: J764 ELV MLB H40 0046
Serial number: 2312000068673013
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels:| 4G0-820-043-4Z.clb
Part No SW: 4G0 820 043 K HW: 4G0 820 043 K
Component: KLIMA 4 ZONEN H12 0064
Serial number: 17041200040582
Coding: 3622007820
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_AirCondiComfoUDS 002036
ROD: EV_AirCondiComfoUDS_002.rod
VCID: A71E7F30DE95B0B322-80F3
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 4H0-907-063-V1.clb
Part No SW: 4H0 907 063 BP HW: 4H0 907 063
Component: BCM1 2.0 H12 0111
Revision: 11012002 Serial number: 00000001287572
Coding: 260020118034A7E00905008300000000CF9DC70827090101000008402100
Shop #: WSC 50290 003 104857
VCID: F7BE6F7046B5E03372-80A3
Subsystem 1 - Part No SW: 4G2 955 119 HW: 4G8 955 119 A Labels: 1KX-955-119.CLB
Component: WWS57X 120309 H35 0080
Serial number: 120317110929
Coding: 0045F7
Subsystem 2 - Part No SW: 8K0 955 559 HW: 8K0 955 559 Labels: 8K0-955-559.CLB
Component: RLS H04 0003
Serial number: 20139503
Coding: 02512B
Subsystem 3 - Part No SW: 4G0 941 531 HW: 4G0 941 531
Component: E1 - LDS H07 0044
Serial number: 04 04 2012 00000812
Subsystem 4 - Part No SW: 4H0 907 658 HW: 4H0 907 658
Component: AQ_Hum_Sensor H03 0003
Serial number: E9A80326000000000001
No fault code found.
-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446) Labels:| 4H0-919-475-7X2.clb
Part No SW: 4H0 919 475 Q HW: 4H0 919 475 C
Component: PARKHILFE ACC H07 0060
Revision: 11001001 Serial number: 55901208901402
Coding: 08030C
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_EPHVA18AU57X0000 004005
ROD: EV_EPHVA18AU57X0000_004.rod
VCID: C0CCC4AC5BFB678B03-8095
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:* 4H0-959-655.clb
Part No SW: 4H0 959 655 C HW: 4H0 959 655 C
Component: Airbag10.43 H43 0040
Revision: -------- Serial number: 003JG0084EL%
Coding: 30323436313330303537554A305234473053
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_AirbaAU10BPAAU64X 001014
ROD: EV_AirbaAU10BPAAU64X_VW51.rod
VCID: B620A274093FD93BA9-80E3
Crash sensor for side airbag: driver side:
Serial number: 3575HRB405V1BEPSCHPX
Front Passenger's Side Airbag Crash Sensor:
Serial number: 3585HRB404V1BBH2C88D
Rear Side Airbag Crash Sensor (on driver's side):
Serial number: 3515JRB400E4UHGCIHF3
Passenger side rear thorax airbag crash sensor:
Serial number: 3525JRB401E4UHGC9P0W
Crash sensor for front airbag: driver side:
Serial number: 3554VRB405D18E5G118X
Crash sensor for front airbag: front passenger side:
Serial number: 3564VRB400M4UHPKL0FU
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:. 4H0-953-568.clb
Part No SW: 4G0 953 568 A HW: 4G0 953 568 A
Component: Lenks.Modul H05 0201
Revision: 00000000 Serial number: 20120417000975
Coding: 000035
Shop #: WSC 02391 785 00200
VCID: B02C946CE35BF70BF3-80E5
Subsystem 1 - Part No SW: 4G0 951 528 A HW: 4G0 951 528 A
Component: E221 - MFL H08 0009
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:| 4H0-920-xxx-17.clb-SRI1
Part No SW: 4G9 920 980 B HW: 4G9 920 980 B
Component: TDieGb Nv H78 0416
Revision: 28131177 Serial number: 658190312596036
Coding: 33A7230813212600010600
Shop #: WSC 50290 003 104857
ASAM Dataset: EV_RBD4K 004045
ROD: EV_RBD4K_AU57.rod
VCID: B2289E64E557C51B85-80E7
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:* None
Part No SW: 4G5 907 468 A HW: 4G5 907 468
Component: J533--Gateway H10 0028
Revision: -------- Serial number: 00000000486550
Coding: 00CD077D00
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_GatewPkoUDS 001013
ROD: EV_GatewPkoUDS_001_AU57.rod
VCID: B3269B601A4DCC138E-80E7
Battery Monitoring Control Module:
Subsystem 1 - Part No SW: 8X0 915 181 HW: 8X0 915 181
Component: J367-BDM H07 0141
Serial number: 00000000003790922824
Voltage stabilizer:
Subsystem 2 - Part No SW: 8K0 959 663 F HW: 8K0 959 663
Component: J532_DCDCStab H23 0021
Serial number: 09011200000000000165
No fault code found.
-------------------------------------------------------------------------------
Address 28: HVAC, Rear (E265) Labels:* 4G0-919-158.clb
Part No SW: 4G0 919 158 C HW: 4G0 919 158 C
Component: KLIMA FOND H07 0064
Serial number: 19041200040530
Coding: 02
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_ClimaContrUnitRearUDS 002018
ROD: EV_ClimaContrUnitRearUDS_002.rod
VCID: AF2E9710F665E8F3EA-80FB
No fault code found.
-------------------------------------------------------------------------------
Address 34: Level Control (J197) Labels:. 4G0-907-553.clb
Part No SW: 4G0 907 553 F HW: 4G0 907 553 F
Component: LUFE-DAEMPFER H18 0782
Coding: 008000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_AirSuspe 003024
ROD: EV_AirSuspe_VW51.rod
VCID: AE108A14F16FE1FBE1-80FB
No fault code found.
-------------------------------------------------------------------------------
Address 3B: Sensor Elect. (J849) Labels: 4G0-907-637.clb
Part No SW: 4G0 907 637 K HW: 4G0 907 637 F
Component: SARA 6D H01 0051
Revision: -------- Serial number: EJ1BPA8200198M
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_SARA2 004010
ROD: EV_SARA2_004.rod
VCID: B620A274093FD93BA9-80E3
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:. 4H0-959-793.clb
Part No SW: 4G8 959 793 G HW: 4G8 959 793 G
Component: TSG FA H03 0505
Revision: -------- Serial number: --------------
Coding: 011F16004001620002080002
Shop #: WSC 02391 785 00200
VCID: C4C4C8BC47E37BAB27-8091
No fault code found.
-------------------------------------------------------------------------------
Address 44: Steering Assist (J500) Labels:| 4G0-909-144.clb
Part No SW: 4G0 909 144 L HW: 4G0 909 144 G
Component: RCEPS H35 0010
Revision: 00001000 Serial number: 0027470277
Coding: 101000010000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_RCEPS 009008
ROD: EV_RCEPS_009.rod
VCID: B2289E64E557C51B85-80E7
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 4H0-907-064-46.clb
Part No SW: 4H0 907 064 FG HW: 4H0 907 064 BG
Component: BCM2 2.0 H31 0560
Revision: 00002001 Serial number: 0174000735
Coding: 013F062220B9040083200904000104000000000000000000000000000000
Shop #: WSC 50290 003 104857
VCID: F3A65B6052CD8C134E-80A7
Subsystem 1 - Part No: 4G0 951 177
Component: DWA-Sensor H01 0010
Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501
No fault code found.
-------------------------------------------------------------------------------
Address 47: Sound System (J525) Labels: None
Part No SW: 4G0 035 223 C HW: 4G0 035 223 A
Component: BOSE-G3-C7 H07 0160
Revision: CJ007001 Serial number: 00000000043861
Coding: 030000
Shop #: WSC 02391 785 00200
VCID: 9D725DD884C96A6348-80C9
No fault code found.
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels:. 4H0-959-792.clb
Part No SW: 4G8 959 792 G HW: 4G8 959 792 G
Component: TSG BF H03 0505
Revision: -------- Serial number: --------------
Coding: 011F16004001620002080002
Shop #: WSC 50290 003 1048576
VCID: C3C6CBA042ED7C931E-8097
No fault code found.
-------------------------------------------------------------------------------
Address 53: Parking Brake (----) Labels: 4H0-907-801.clb
Part No SW: 4H0 907 801 E HW: 4H0 907 801 A
Component: EPB-4 H03 0012
Revision: -------- Serial number: 00000000319415
ASAM Dataset: EV_ParkiBrake 001022
ROD: EV_ParkiBrake_VW51.rod
VCID: AA188604CD878DDB3D-80FF
No fault code found.
-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794) Labels: None
Part No SW: 4G0 035 193 E HW: 4G0 035 193 D
Component: RMC Cnct Nav H52 0775
Coding: 0101050001E15B67082B060301020100000000
Shop #: WSC 02391 785 00200
VCID: A5027538AC99A2A310-80F1
Subsystem 1 - Part No: 8X0 919 884 D
Component: P13-50-11.06 0002
Subsystem 2 - Part No SW: 4G0 919 603 HW: 4G0 919 603
Component: DU6 Basic H42 0084
Serial number: 9464CT0C2521366
Subsystem 3 - Part No SW: 4G2 919 610 B HW: 4G2 919 610 B
Component: E380 BDT C7 H11 0204
Serial number: 90349LDC0017V
1 Fault Found:
03157 - Functionality limited due to Communications Disruption
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 6
Fault Frequency: 1
Reset counter: 190
Mileage: 178037 km
Time Indication: 0
Date: 2021.06.03
Time: 15:10:42
Freeze Frame:
Bin. Bits: 00100000 00000000
Bin. Bits: 00000000 00000000
Bin. Bits: 00000000 00000000
Bin. Bits: 00000000 00000000
-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388) Labels:. 4H0-959-795.clb
Part No SW: 4G8 959 795 G HW: 4G8 959 795 G
Component: TSG HL H03 0505
Revision: -------- Serial number: --------------
Coding: 010F14004001620002080002
Shop #: WSC 02391 785 00200
VCID: C6C0D2B471DF49BB39-8093
No fault code found.
-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389) Labels:. 4H0-959-795.clb
Part No SW: 4G8 959 795 G HW: 4G8 959 795 G
Component: TSG HR H03 0505
Revision: -------- Serial number: --------------
Coding: 010F14004001620002080002
Shop #: WSC 02391 785 00200
VCID: C6C0D2B471DF49BB39-8093
No fault code found.
End----(Elapsed Time: 02:24, VBatt start/end: 11.7V/11.7V. VIgn 11.7V)-----