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2012 Audi A7, MMI in and out randomly: doesn't come out when car starts, black screen, shut-off during driving, etc., all different behaviors, it can happen at anytime. When it's working everything is fine, radio, navigation, sound.

First, like anyone else I bought an optical loop, couldn't locate the issue.

Then I bought the VCDS scanner. The Application/Optical Bus Diagnostics shows everything is OK, no Error at all. So I scanned the whole car. Here is the result, all errors related to the multimedia, nothing else is wrong. Please see the whole log attached.

Blow are the error codes. Can anyone give me an idea how to proceed? Thanks in advanced!

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:| 4H0-907-468.clb
Part No SW: 4G0 907 468 G HW: 4G0 907 468 A
Component: J533--Gateway H08 0214
Revision: -------- Serial number: 00000000311080
Coding: 00C1033000
Shop #: WSC 02391 785 00200
GVL: FDEDE84CFEE36C0D40
ASAM Dataset: EV_GatewUDS 001025
ROD: EV_GatewUDS_AU57.rod
VCID: 343110EB6EBF20CB3FA-8060

Battery Monitoring Control Module:
Subsystem 1 - Part No SW: 8X0 915 181 HW: 8X0 915 181
Component: J367-BDM H07 0141
Serial number: 00000000003790946609

5 Faults Found:
6151 - Instrument Cluster Control Module on Optical Bus
U10C0 00 [009] - No Communication
[Lost Communication With Instrument Panel Cluster (IPC) Control Module]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Date: 2022.12.02
Time: 16:11:41

Voltage terminal 30: 12.3 V
Voltage terminal 15: 12.3 V
Control Module temperature: 16 °C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0

6221 - Control unit for information electronics 1
U1054 00 [009] - No Communication
[Steuergerät für Informationselektronik Keine Kommunikation]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Date: 2022.12.02
Time: 16:11:41

Voltage terminal 30: 12.3 V
Voltage terminal 15: 12.3 V
Control Module temperature: 16 °C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0

6232 - Media player in position 1
U105E 00 [009] - No Communication
[Mediaplayer Position 1 Keine Kommunikation]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Date: 2022.12.02
Time: 16:11:41

Voltage terminal 30: 12.3 V
Voltage terminal 15: 12.3 V
Control Module temperature: 16 °C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0

6226 - Radio
U1066 00 [009] - No Communication
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Date: 2022.12.02
Time: 16:11:41

Voltage terminal 30: 12.3 V
Voltage terminal 15: 12.3 V
Control Module temperature: 16 °C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0

6227 - Digital sound System control module
U106A 00 [009] - No Communication
[Steuergerät für Digitales Soundpacket Keine Kommunikation]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Date: 2022.12.02
Time: 16:11:41

Voltage terminal 30: 12.3 V
Voltage terminal 15: 12.3 V
Control Module temperature: 16 °C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0


------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 4H0-907-064-46.clb
Part No SW: 4H0 907 064 BR HW: 4H0 907 064 BR
Component: BCM2 2.0 H31 0333
Revision: 00002001 Serial number: 0162992661
Coding: 0126023A20FAF48580B00A8002010000000000000000000000 0000000000
Shop #: WSC 02311 785 00200
VCID: 7AADFED30CDB16BBA56-802E

Subsystem 1 - Part No SW: 4G0 959 719 HW: 4G0 959 719
Component: GTO BF H01 0070
Serial number: 00000000000000058047

Subsystem 2 - Part No SW: 7P5 959 591 HW: 4H0 959 591
Component: J245 PS40.033 H07 0006
Serial number: WOO13995113
Coding: 101F00

Subsystem 3 - Part No SW: 4G0 947 135 G HW: 4G0 947 135
Component: Dachelektroni H10 0100
Serial number: 0000000AP00000555333
Coding: 010000

Subsystem 4 - Part No SW: 4G8 959 252 HW: 4G8 959 252
Component: HSP-SG H09 0027
Serial number: WA101858000000396179

1 Fault Found:
01134 - Alarm Horn (H12)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 105
Mileage: 98260 km
Time Indication: 0
Date: 2022.12.02
Time: 16:11:44

-------------------------------------------------------------------------------
Address 47: Sound System
Cannot be reached

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 5F: Information Electr.
Cannot be reached
 

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