2015 Audi A6 C7 4G : Display blocked, MMI dead

   #1  

JJ28

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Hello everybody!
I am French and it's my first post on this forum as I just bought an HEX-V2 to investigate what is happening to my 2015 Audi A6 C7 4G.
The symptoms are:
- the retractable MMI Display is blocked closed and no ways to get it open
- no MMI console panel key is responding.

So I started an auto-scan which reveal only one error given by 5F controller:
6691 - Local Data Bus​
I looked for information about the controller which gave this default and discover that is supposed to manage sub-systems on different buses.
I am not sure of the exact configuration because I have not the official workshop documents but one interesting thing is this controller should display some sub-systems like E80 which is the control panel.

After this, as this controller manages a MOST bus (optical, easy to see, it's a very specific connector), I tried the Optical Bus Diagnostics in Application menu.
Output is below at the end of the log file.
So I don't know what I can investigate exactly... And a (funny) thing is that this last diagnostic tests the Gateway (J533) which mine has NO Optical connector.

Any ideas... I am sure that the answer is interesting!
Code:
Friday,26,July,2019,10:43:20:02858
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.1.0 (x64)  HEX-V2 CB: 0.4508.4
Data version: 20190529 DS308.0
www.Ross-Tech.com


VIN: WAUZZZ4G5FN085631   License Plate: 
Mileage: 84270km-52362mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 4G-AU57 (4G8)
Scan: 01 02 03 05 08 09 15 16 17 19 28 36 3B 42 44 46 52 53 5F 62
          69 72 8F 90 AC

VIN: WAUZZZ4G5FN085631   Mileage: 84270km-52362miles

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
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
28-HVAC, Rear -- Status: OK 0000
36-Seat Mem. Drvr -- 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
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
69-Trailer -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
8F-Pretens. Frt Left -- Status: OK 0000
90-Pretens. Frt Right -- Status: OK 0000
AC-Reductant Control -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CRTE)       Labels: Redir Fail!
   Part No SW: 4G2 907 311 C    HW: 4G2 907 401 
   Component: 3.0TDI EDC17  H34 0007  
   Revision: 92H34---    
   Coding: 0A254012053601030000
   Shop #: WSC 26733 003 1048576
   ASAM Dataset: EV_ECM30TDI0114G2907311C 001007
   ROD: EV_ECM30TDI0114G2907311C.rod
   VCID: 2517F060E561B48F99F-8070

No fault code found.
Readiness: 0 0 0 0 1 

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0B5-927-156.clb
   Part No SW: 4G0 927 166 A    HW: 0B5 927 156 K
   Component: 0B5 30 TDIRdW H03 0008  
   Revision: --H03---    
   Coding: 100001
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_TCMDL501021 001021
   ROD: EV_TCMDL501021.rod
   VCID: 2B030658838582FF4FB-807E

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 4G0-907-379-V2.clb
   Part No SW: 4G0 907 379 Q    HW: 4G0 907 379 Q
   Component: ESP9 Premium  H01 0420  
   Revision: --------    Serial number: --------------
   Coding: 17A69E41E8657982BB00
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_ESP9BOSCHAU57X 003019
   ROD: EV_ESP9BOSCHAU57X_003.rod
   VCID: 3FDB420867FD0E5FF33-806A

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 4H0 907 064 FP    HW: 4H0 907 064 EP
   Component: BCM2 2.0      H36 0560  
   Revision: 00002001    
   Coding: 05A86F0E000000000000
   Shop #: WSC 02391 785 00200
   VCID: 7CA1F50436EBD547961-8028

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 4G0-820-043-4Z.clb
   Part No SW: 4G0 820 043 CD    HW: 4G0 820 043 CD
   Component: KLIMA 4 ZONEN H14 0112  
   Serial number: 07041500040314
   Coding: 36011178210000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirCondiComfoUDS 003008
   ROD: EV_AirCondiComfoUDS_003.rod
   VCID: 6393AE78ABD50ABFB7B-8036

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 4H0-907-063-V2.clb
   Part No SW: 4H0 907 063 DH    HW: 4H0 907 063 AH
   Component: BCM1 2.0      H20 0311  
   Revision: 15020001    Serial number: 00001041747502
   Coding: 2600001400349FE08181408380001D0CCF9CE20826090201000008206101150200400024030000
   Shop #: WSC 02391 785 00200
   VCID: 71BFD43061A9A82F357-8024

   Subsystem 1 - Part No SW: 4G1 955 119     HW: 4G8 955 119   Labels: 1KX-955-119.CLB
   Component: WWS57X 150314  H37 0080 
   Serial number:         150325122221
   Coding: 0045F7

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0002 
   Serial number: 23867849            
   Coding: 02006D

   Subsystem 3 - Part No SW: 4G0 941 531 BE    HW: 4G0 941 531 BE
   Component: E1 - LDS  H07 0044 
   Serial number: 12 03 2015  00000203

   Subsystem 4 - Part No SW: 4H0 907 658     HW: 4H0 907 658 
   Component: AQ_Hum_Sensor  H03 0003 
   Serial number: 99380E97000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 4H0-959-655.clb
   Part No SW: 4H0 959 655 H    HW: 4H0 959 655 H
   Component: Airbag10.43   H82 0086  
   Revision: --------    Serial number: 003P10041XK1
   Coding: 30333130313730323731554A304C34473053
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirbaAU10BPAAU64X 001014
   ROD: EV_AirbaAU10BPAAU64X_VW51.rod
   VCID: 3B23361873E5127FDFB-806E

   Crash sensor for side airbag: driver side: 
   Serial number: 3575HRB404T37GLK4PE7

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3585HRB405937GLK216+

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 3515JRB405136F9QOH1A

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 3525JRB405536F9QK1RL

   Crash sensor for front airbag: driver side: 
   Serial number: 3554VRB4051367OMJ93H

   Crash sensor for front airbag: front passenger side: 
   Serial number: 3564VRB4051367OM39LK

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 4H0-953-568.clb
   Part No SW: 4H0 953 568 K    HW: 4H0 953 568 K
   Component: Lenks.Modul   H06 0005  
   Revision: C0068538    Serial number: 90862OCU0021L 
   Coding: 000014
   Shop #: WSC 02391 785 00200
   VCID: 3B2336187365127FDFB-806E

   Subsystem 1 - Part No SW: 4G0 951 528 D    HW: 4G0 951 528 D
   Component: E221 - MFL  H09 0010 
   Serial number: 14 02 2015  A0047606

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 4H0-920-xxx-17.clb-SRI1
   Part No SW: 4G8 920 933 Q    HW: 4G8 920 933 Q
   Component: TDieRdw       H08 0043  
   Revision: 04001037    Serial number: 658310315596060
   Coding: 13A60A000B410008030000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RBD4K 004048
   ROD: EV_RBD4K_AU57.rod
   VCID: 3E253F0C60F70757F85-806A

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:* None
   Part No SW: 4G8 907 468     HW: 4G8 907 468 
   Component: J533--Gateway H13 0075  
   Revision: --------    Serial number: 00000001778374
   Coding: C0CD078118
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_GatewPkoUDS 001024
   ROD: EV_GatewPkoUDS_001_AU57.rod
   VCID: 75B7E0201541840FE9F-8020

   Battery Monitoring Control Module: 
   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181 
   Component: J367-BDMHella  H03 8041 
   Serial number: 1900856003          

   Voltage stabilizer: 
   Subsystem 2 - Part No SW: 8K0 959 663 F    HW: 8K0 959 663 F
   Component: J532_DCDCStab  H23 0022 
   Serial number: 150113000000000003CB

No fault code found.

-------------------------------------------------------------------------------
Address 28: HVAC, Rear (E265)       Labels:* 4G0-919-158.clb
   Part No SW: 4G0 919 158 Q    HW: 4G0 919 158 Q
   Component: KLIMA FOND    H08 0112  
   Serial number: 01041500040825
   Coding: 20
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_ClimaContrUnitRearUDS 003004
   ROD: EV_ClimaContrUnitRearUDS_003.rod
   VCID: 3D2738006DF11C4FE1F-8068

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels: None
   Part No SW: 4G8 959 760     HW: 4G8 959 760 
   Component: MEM-FS        H03 0157  
   Revision: AA000000    Serial number: 00000141839433
   Coding: 00581B0000006001000001010101102030303232203232
   Shop #: WSC 02391 785 00200
   VCID: 77ABEA280FCDF61FFB3-8022

No fault code found.

-------------------------------------------------------------------------------
Address 3B: Sensor Elect. (J849)       Labels: 4G0-907-637.clb
   Part No SW: 4G0 907 637 H    HW: 4G0 907 637 D
   Component: SARA 3D       H04 0056  
   Revision: --------    Serial number: EJ1BPA720GT3JR
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_SARA2 005012
   ROD: EV_SARA2.rod
   VCID: 33331E385BB5DA3F07B-8066

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 4H0-959-793.clb
   Part No SW: 4G8 959 793 J    HW: 4G8 959 793 G
   Component: TSG FA        H03 0507  
   Revision: --------    Serial number: --------------
   Coding: 011F17015E00628002080002
   Shop #: WSC 02391 785 00200
   VCID: 47CB5AE83FAD469F4B3-8012

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 4G0-909-144.clb
   Part No SW: 4G0 909 144 S    HW: 4G0 909 144 G
   Component: RCEPS         H43 0012  
   Revision: 00001000    Serial number: 0023643378
   Coding: 101000010001
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RCEPS 009013
   ROD: EV_RCEPS_009.rod
   VCID: 392F2C1079D9206FCD7-806C

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 4H0-907-064-46.clb
   Part No SW: 4H0 907 064 FP    HW: 4H0 907 064 EP
   Component: BCM2 2.0      H36 0560  
   Revision: 00002001    Serial number: 0363751724    
   Coding: 01000E3800B900818320080428030E470000000000000000000000000000
   Shop #: WSC 02391 785 00200
   VCID: 7CA1F50436EBD547961-8028

   Subsystem 1 - Part No SW: 3AA 962 243 D    HW: 3AA 962 243 D
   Component: GEB.F.Heckoef  H16 0811 
   Serial number: 93479329            

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 4H0-959-792.clb
   Part No SW: 4G8 959 792 J    HW: 4G8 959 792 G
   Component: TSG BF        H03 0507  
   Revision: --------    Serial number: --------------
   Coding: 011F17015E00628002080002
   Shop #: WSC 02391 785 00200
   VCID: 46D557EC38A75F97B05-8012

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 4H0-907-801.clb
   Part No SW: 4H0 907 801 H    HW: 4H0 907 801 A
   Component: EPB-4         H04 0015  
   Revision: --------    Serial number: 00000001416767
   ASAM Dataset: EV_ParkiBrake 001028
   ROD: EV_ParkiBrake_VW51.rod
   VCID: 2D070840BD918CCF51F-8078

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:* 4G1-035-MIB-HGH2.clb
   Part No SW: 4G1 035 043 B    HW: 4G1 035 043 
   Component: MU-H-N-EU     041 MU-H-N-EU     041 00730073  
   Serial number: A591D0F7525204
   Coding: 01750101FF0A000013110001000A00002F0006E5F1700100DF
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_MUHig6C3Gen2HBAS 001115
   ROD: N/A
   VCID: 1D67D880CD317C4FC1F-8048

1 Fault Found:
6691 - Local Data Bus 
          U10BA 00 [008] - No Communication
          [Sub-Bus Bus keine Kommunikation]
          Intermittent - Confirmed - Tested Since Memory Clear

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels: None
   Part No SW: 4G8 959 795 J    HW: 4G8 959 795 G
   Component: TSG HL        H03 0507  
   Revision: --------    Serial number: --------------
   Coding: 010F15004000628002080002
   Shop #: WSC 02391 785 00200
   VCID: 49CF5CD029B9B0EF5D7-801C

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:| 4H0-907-383-V2.clb
   Part No SW: 4G8 907 383 B    HW: 4G8 907 383 B
   Component: Anhaenger     H14 0137  
   Revision: 7B001001    Serial number: 0363786524
   Coding: 0100000202000000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_TrailFunctGener2Hella 001005
   ROD: EV_TrailFunctGener2Hella_VW26.rod
   VCID: 33331E385BB5DA3F07B-8066

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels: None
   Part No SW: 4G8 959 795 J    HW: 4G8 959 795 G
   Component: TSG HR        H03 0507  
   Revision: --------    Serial number: --------------
   Coding: 010F15004000628002080002
   Shop #: WSC 02391 785 00200
   VCID: 49CF5CD029B9B0EF5D7-801C

No fault code found.

-------------------------------------------------------------------------------
Address 8F: Pretens. Frt Left (J854)       Labels: 4H0-980-94x-RGS.clb
   Part No SW: 4H0 980 945 B    HW: 4H0 980 945 C
   Component: RGS-VL        H13 0080  
   Coding: 00060000031F030000030801424CDA010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RGS_L 002004
   ROD: EV_RGS_L.rod
   VCID: 313F1430A1A9E82F757-8064

No fault code found.

-------------------------------------------------------------------------------
Address 90: Pretens. Frt Right (J855)       Labels: 4H0-980-94x-RGS.clb
   Part No SW: 4H0 980 946 B    HW: 4H0 980 946 C
   Component: RGS-VR        H13 0080  
   Coding: 00060000031F030000030801424CDA010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RGS_R 002004
   ROD: EV_RGS_R.rod
   VCID: 323D1B3CA4AFD3370CD-8066

No fault code found.

-------------------------------------------------------------------------------
Address AC: Reductant Control (J880)       Labels: 4G0-907-355.clb
   Part No SW: 4H0 907 355 D    HW: 4G0 907 355 B
   Component: SCR-Stg-G2    H10 0012  
   Revision: 00000000    Serial number: 150721803
   ASAM Dataset: EV_RDCMA00100 008040
   ROD: EV_RDCMA00100_008.rod
   VCID: 2D070840BD918CCF51F-8078

No fault code found.

End----------(Elapsed Time: 02:17, VBatt start/end: 12.2V/12.2V)-----------

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Control Module Part Number: 4G8 907 468 
  Component and/or Version: J533--Gateway H13 0075

Optical Bus Diagnostic : Standard

Controller          	Electrical          	Optical             
CAN Gateway         	ERROR               	ERROR               
Information Electr. 	ERROR               	ERROR               
Instruments         	ERROR               	ERROR               

************************************************************
 
   #2  

Uwe

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"Local Data Bus" is almost always a single-wire LIN bus.

On an MMI like yours, I would expect to see a number of sub-systems like this example (the exact list will vary depending on equipment):

Code:
Subsystem 1 - Part No SW: V03 959 801 FC HW: ----------- 
Component: ECE 2017 --- 0157 
Serial number: -------------------- 

Subsystem 2 - Part No SW: 4G1 919 605 A HW: 4G1 919 605 A 
Component: DU8 C7 SV H63 0006 
Serial number: [redacted]

Subsystem 3 - Part No SW: 4G1 919 610 F HW: 4G1 919 610 F 
Component: E380 BDT C7 H20 0250 
Serial number: [redacted]

Subsystem 4 - Part No SW: V03 959 800 EG HW: ----------- 
Component: Gracenote --- 1010 
Serial number: --------------------

None of these are showing up due U10BA fault. This could be due to a wiring problem, or one of the modules on that bus having the whole thing locked in some state where nothing can communicate on it.

-Uwe-
 
   #3  

Jack@European_Parts

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--------------------------------------------------------------------------------


Control Module Part Number: 4G8 907 468
Component and/or Version: J533--Gateway H13 0075

Optical Bus Diagnostic : Standard

Controller Electrical Optical
CAN Gateway ERROR ERROR
Information Electr. ERROR ERROR
Instruments ERROR ERROR

************************************************************
JPPSG

Check fuses!
https://forums.ross-tech.com/showth...essional-Problem-Solver-Guide-quot-JPPSG-quot
OP Get loop bypass wire for the optical BUS and isolate components on the daisy chain as per RTFB.


s-l1600.jpg
 
   #4  

Uwe

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   #5  

JJ28

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I think so, Uwe. It seems that there is only one other unit on the MOST, excepting the J794 (7F) which gives the defaults, the Instruments (J285). And I put a shunt on the MOST connector arriving to it and nothing changes. So the MOST is not guilty! I think the drag from VCDS is garbage for other reasons I don't know.
The point is I have contradictory informations for the different buses and no way to know the truth...
Is Local Data Bus could be a "private CAN bus" as I saw in some document ?
 
   #6  

JJ28

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I found this document: " Self Study Programme 994618AG, Audi Modular Infotainment System (MIB)" where I can find my exact J794 (MIB High) which has no LIN but 2 CANs (plus the MOST) :
- the Info/Entertainment CAN, which should connect to the Gateway I assume,
- a Private CAN which leads to the MMI control panel (E380)

I will investigate the E380 environment
 
   #7  

Uwe

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The point is I have contradictory informations for the different buses and no way to know the truth...
Is Local Data Bus could be a "private CAN bus" as I saw in some document ?
Yes, it's possible that the "local bus" is a private CAN (or similar) bus.

If this were my car, I'd pull VIN-specific Wiring Diagram to study.

-Uwe-
 
   #8  

Jack@European_Parts

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