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2007 A6 -- MMI reboots every 2 seconds

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Old 10-30-2017, 08:54 AM
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Default 2007 A6 -- MMI reboots every 2 seconds

I've searched extensively and haven't found the answer...

The MMI in my 2007 C6 reboots every 2 seconds (3 seconds to reboot, 2 seconds live, and so on and on). A couple of days ago I noticed that the bluetooth connection stopped working and the radio would reboot every 1:58 seconds. So I played around, unpaired devices and now it reboots every 2 seconds. I have hard rebooted it a few times but to no avail. Even when muted and display tuned off, you can hear the CD changer reinitialize and the speakers click.

So I have no use for any of the functions now except that the NAV maps (choppy/frozen while it reboots) and the backup camera.

Any suggestions? Some posts say the HDD is dying but I'm not sure why it would be done so periodically.
Old 10-30-2017, 07:26 PM
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Did you try a forced reset? If not here is a video showing it:

Old 10-31-2017, 06:14 AM
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Yes, I've done it a few times.
Old 10-31-2017, 06:24 AM
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Originally Posted by ingelstrada
Yes, I've done it a few times.
Did the system reboot when you tried it?


You can try replacing the "5A Communication" Fuse on the side of the passenger side dash panel.

or

You can follow this thread:

https://www.audiworld.com/forums/a6-.../#post25060407

Last edited by Nightlifephantom; 10-31-2017 at 06:26 AM.
Old 11-01-2017, 02:03 PM
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Checked the two 5A fuses in the fuse area on the passenger side, all are OK.

Checked the 5A fuses in the trunk and they are OK, too.
Old 11-05-2017, 06:54 AM
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It sounds like it can't initialize, maybe one module is not able to communicate via the MOST loop. They are connected in series so if one module does not pass the signal on to the next, nothing will work. Do you have VCDS? That would tell you where the communication breakdown is. Also, have you changed out or replaced anything recently like Nav, CD changer, AMI etc?
Old 11-27-2017, 07:51 AM
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I ran the VCDS and it gives me different readings. My guess is that it depends where in the initialization process the MMI is. At this point I think I need to disconnect each module and find what the culprit is. My suspicion is that it's the bluetooth module or the telephone module. I accessed the bluetooth module yesterday but by looking at it, nothing was corroded or anything and there is no visual indication if it works or not. When I removed the fiber cable, MMI stopped working so I know that it was keeping the loop intact.

For that I am told I need a MOST bypass loop. Can anyone suggest where I can find it? Also, what about the electrical connector, do I need to bypass the electrical connection, too?

Reading 1
00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: Malfunction 0010
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010 (note: 02745 - Bulb for Daytime Running Light; Left )
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: Malfunction 0010 (note: expired satellite radio 02635 - Tuner Not Enabled/Activated )
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: Malfunction 0010
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: Malfunction 0010
67-Voice Control -- Status: Malfunction 0010
6C-Back-up Cam. -- Status: Sporadic communication error 1000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

Reading 2
00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: OK 0000
67-Voice Control -- Status: OK 0000
6C-Back-up Cam. -- Status: Sporadic communication error 1000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

Last edited by ingelstrada; 11-27-2017 at 07:53 AM.
Old 11-27-2017, 07:55 AM
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Here is the long readout from the 1st reading

Mileage: 337050km-209433miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: Malfunction 0010
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: Malfunction 0010
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: Malfunction 0010
67-Voice Control -- Status: Malfunction 0010
6C-Back-up Cam. -- Status: Sporadic communication error 1000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (AUK) Labels:. 06E-910-559-BKH.clb
Part No SW: 4F2 910 559 C HW: 4F1 907 559 E
Component: 3.2l V6 FSI 0050
Revision: --H19--- Serial number:
Coding: 01050109190F0120
Shop #: WSC 01114 444 83880
VCID: 2C5C0BEB8FF9032606-8078

1 Fault Found:
005491 - Left Engine Mount Solenoid Valve (N144)
P1573 - 009 - Open Circuit
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 5
Reset counter: 40
Mileage: 336908 km
Time Indication: 0
Date: 2017.11.14
Time: 16:41:42

Freeze Frame:
RPM: 1536 /min
Mass Air / Rev.: 223.5 mg/str
Temperature: 27.0°C
Part Throttle
Load: 34.9 %
Speed: 19.0 km/h

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 09L-927-760.lbl
Part No SW: 4F2 910 156 G HW: 09L 927 156 C
Component: AG6 09L 3.2 FSI USA 0010
Revision: --H01--- Serial number: 4219428
Coding: 0000002
Shop #: WSC 02325 785 00200
VCID: 2952F2FF800B160EFD-807C

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4F0-910-517.lbl
Part No SW: 4F0 910 517 AD HW: 4F0 614 517 AA
Component: ESP8 quattro H01 0070
Revision: 00000000 Serial number: 00000000000000
Coding: 0020895
Shop #: WSC 02325 785 00200
VCID: 66C8B9C35195F97610-8032

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. Labels:. 4F0-910-852.clb
Part No SW: 4F0 910 852 HW: 4F0 905 852 B
Component: FBSAUDIC6 ELV H31 0220
Revision: 31050601 Serial number: 10601000515211
Coding: 0000007
Shop #: WSC 02323 785 00200
VCID: 63CEA0D7A2A78C5EF7-8036

Subsystem 1 - Part No: 4F0 910 131 L
Component: FBSAUDIC6 EZS H45 0080

Subsystem 2 - Part No: 4F0 910 335
Component: FBSAUDIC6 KSG H27 0080

No fault code found.

-------------------------------------------------------------------------------
Address 07: Control Head Labels: 4F0-910-7xx-07-H.clb
Part No: 4F0 910 731 H
Component: Interfacebox H43 2740
Shop #: WSC 02335 785 00200
VCID: 2756F4C7961F207EEB-FFFE

Subsystem 1 - Part No: 4F0 910 609 E
Component: Bedienteil MMIC6H02 0060


-------------------------------------------------------------------------------
Address 08: Auto HVAC
Cannot be reached

-------------------------------------------------------------------------------
Address 09: Cent. Elect.
Cannot be reached
Unable to communicate with address 09. Are you sure the doors are unlocked?

-------------------------------------------------------------------------------
Address 0E: Media Player 1
Cannot be reached

-------------------------------------------------------------------------------
Address 0F: Digital Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 15: Airbags
Cannot be reached

-------------------------------------------------------------------------------
Address 16: Steering wheel
Cannot be reached

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 4F0-910-xxx-17.lbl
Part No SW: 4F0 910 930 C HW: 4F0 920 981 G
Component: KOMBIINSTR. M73 H18 0110
Revision: 00400000 Serial number: 5FG323186
Coding: 2129267
Shop #: WSC 01114 444 83880
VCID: 234EE0D7E227CC5EB7-8076

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway
Cannot be reached

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr
Cannot be reached

-------------------------------------------------------------------------------
Address 37: Navigation
Cannot be reached

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver
Cannot be reached

-------------------------------------------------------------------------------
Address 46: Central Conv.
Cannot be reached

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

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II
Cannot be reached

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.
Cannot be reached

-------------------------------------------------------------------------------
Address 53: Parking Brake Labels: 4F0-910-801.clb
Part No SW: 4F0 910 801 B HW: 4F0 907 801 A
Component: EPB CB4C0060 H04 0060
Revision: --H04---
Coding: 0005022
Shop #: WSC 02324 785 00200
VCID: 1F46EC27CE4FE8BE93-804A

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4F0-910-357.lbl
Part No SW: 4F0 910 357 F HW: 4F0 907 357 F
Component: AFS 1 H01 0020
Revision: 00000001 Serial number:
Coding: 0000016
Shop #: WSC 02325 785 00200
VCID: 2952F2FF800B160EFD-807C

Subsystem 1 - Part No: 4F0 941 329 B
Component: AFS-Modul links H02 0020

Subsystem 2 - Part No: 4F0 941 329 B
Component: AFS-Modul rechtsH02 0020

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 4E0-910-541.lbl
Part No SW: 4E0 910 541 M HW: 4F0 035 541 H
Component: TUNER EU/US/RDW H42 0570
Revision: 00000000 Serial number: 394HY067674341
Coding: 0000002
Shop #: WSC 02323 785 00200
VCID: 2A500DF3850D1D16F4-FFFE


-------------------------------------------------------------------------------
Address 61: Battery Regul. Labels: 4F0-910-181.lbl
Part No SW: 4F0 910 181 E HW: 4F0 915 181 A
Component: J0644 BEM H12 0590
Revision: 00000000 Serial number: 00000000091865
Shop #: WSC 01113 444 53933
VCID: 234EE0D7E227CC5EB7-8076

Subsystem 1 - Part No: 4F0 915 105 D
Component: von VA0 2608101434
Coding: 344630393135313035442056413032363038313031343334
Shop #: WSC 00000 384 00290

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 4F0-910-795.lbl
Part No SW: 4F0 910 795 E HW: 4F0 959 795 E
Component: TSG HL H21 0050
Coding: 0051754
Shop #: WSC 02327 785 00200
VCID: 2E5801E3B9E5713628-807A

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure Labels: 4F0-910-273-BA.lbl
Part No SW: 4F0 910 273 B HW: 4F0 907 273 A
Component: Reifendruck 3 H05 0100
Revision: 00050100 Serial number: 00000900028657
Coding: 0062221
Shop #: WSC 02334 785 00200
VCID: 2240E5D3FD3DC556BC-8076

1 Fault Found:
02214 - Tire Pressure Warning
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 1
Fault Frequency: 3
Reset counter: 159
Mileage: 331482 km
Time Indication: 0
Date: 2017.10.11
Time: 17:14:38

Freeze Frame:
(no units): 23.0
Temperature: 14.0°C
Error Code: 1
Not Recogn.
Not Recogn.
Not Recogn.
Not Recogn.


-------------------------------------------------------------------------------
Address 67: Voice Control Labels: 4E0-910-75x-67.lbl
Part No SW: 4E0 910 754 Q HW: 4E0 035 753 A
Component: SDS 3501 US H45 0630
Revision: 00000000 Serial number: 00000608090163
Shop #: WSC 12336 024 394758
VCID: 346C138B57C95BE65E-8060

2 Faults Found:
00474 - Control Module for Immobilizer
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 5
Fault Frequency: 2
Reset counter: 180
Mileage: 336908 km
Time Indication: 0
Date: 2017.11.14
Time: 12:39:15

02095 - Component Protection Active
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 2
Reset counter: 180
Mileage: 336908 km
Time Indication: 0
Date: 2017.11.14
Time: 12:39:15


-------------------------------------------------------------------------------
Address 6C: Back-up Cam. Labels: 4L0-910-441.clb
Part No SW: 4F0 910 441 HW: 4L0 907 441 A
Component: J772__Rearview 0050
Revision: --H12--- Serial number: 525PA8-J682011
Coding: 1000304
Shop #: WSC 02335 785 00200
VCID: 5DBA962F84C3BAAEC1-8008

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 4F0-910-795.lbl
Part No SW: 4F0 910 795 E HW: 4F0 959 794 E
Component: TSG HR H21 0050
Coding: 0051754
Shop #: WSC 02327 785 00200
VCID: 2E5801E3B9E5713628-807A

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 4Fx-910-283.lbl
Part No SW: 4F0 910 283 F HW: 4F0 919 283 F
Component: Parkhilfe 4-Kan H09 0060
Revision: 00H09000 Serial number: 06220621507375
Coding: 0021206
Shop #: WSC 131071 1023 2097151
VCID: 2756F4C7961F207EEB-8072

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone
Cannot be reached

End-------------------------(Elapsed Time: 03:40)--------------------------
Old 11-27-2017, 08:54 AM
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Originally Posted by ingelstrada
I ran the VCDS and it gives me different readings. My guess is that it depends where in the initialization process the MMI is. At this point I think I need to disconnect each module and find what the culprit is. My suspicion is that it's the bluetooth module or the telephone module. I accessed the bluetooth module yesterday but by looking at it, nothing was corroded or anything and there is no visual indication if it works or not. When I removed the fiber cable, MMI stopped working so I know that it was keeping the loop intact.

For that I am told I need a MOST bypass loop. Can anyone suggest where I can find it? Also, what about the electrical connector, do I need to bypass the electrical connection, too?
...
Most Bypass Most Bypass
you don't need to bypass the electrical connection.
Old 11-27-2017, 09:08 AM
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Excellent, thank you!


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