jbrentd

I started having problems with my 2G MMI on my 2007 A6 yesterday. I updated the firmware to 4610 and started using a new NAV DVD back in Nov '13 and installed an OEM AMI unit in Jan '14. Haven't had any problems since either of those changes. Below is a list of symptoms I am experiencing:

• Overall, the system is very sluggish.
• It takes several seconds for the rearview camera screen to display
• Experiencing a lag in response to volume changes, screen changes, scrolling, etc.
• Screens take several seconds to display information
• No matter what source I have selected, the sounds cuts out (on average) more than once per minute for a few seconds

I've rebooted the MMI system several times with no improvement. I have not disconnected the battery for any length of time to see if that helps.

Just wondering if any of you have experienced similar problems. If so, did you find a solution?

raj99

hey JB

did the lag start occurring immediately after you updated the MMI to 4610? If not, was there any other issue which occurred and are there any vag details which call out any anomalies?

jbrentd

No, it did not start right after the MMI update. I hooked up my vag-com, but didn't see any codes for the MMI, but I think I'll run a complete scan tonight.

jbrentd

Ran an auto scan on all modules. Here are the results filtered to only ones that don't say "No fault code found".

Two modules say "00384 - Optical Databus 011 - Open Circuit - Intermittent". I wonder if the fiber optic connection came loose behind the AMI I installed a couple of months ago? I'll have to check that tonight. Any other ideas?


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Chassis Type: 4F (4L0)
Scan: 01 02 03 05 07 08 09 0E 0F 15 16 17 19 34 36 37 42 46 47 4F
52 53 55 56 61 62 67 6C 72 76 77

VIN: WAUDV94F47N046883 Mileage: 135710km/84326miles

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: Malfunction 0010
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
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
34-Level Control -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
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-Xenon Range -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
67-Voice Control -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

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Address 07: Control Head Labels: 4F0-910-7xx-07-H.lbl
Part No SW: 4F0 910 732 R HW: 4E0 035 729 A
Component: Interfacebox H43 4610
Revision: 00000000 Serial number: 361HI067505122
Coding: 0000003
Shop #: WSC 02335 785 00200
VCID: 3261DBE8AD280C8E5D3-8067

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

Subsystem 2 - Serial number: 00000000498557

Subsystem 3 - Serial number: 0116.08.060000000100010679ÿ

Subsystem 4 - Serial number: 010679ÿ

2 Faults Found:
01325 - Control Module for Tire Pressure Monitoring (J502)
004 - No Signal/Communication
00384 - Optical Databus
011 - Open Circuit - Intermittent

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Address 19: CAN Gateway Labels: 4L0-910-468.lbl
Part No SW: 4L0 910 468 HW: 4L0 907 468
Component: J533__Gateway H06 0040
Revision: 00H06000 Serial number: 0900B068108164
Coding: F5D1DE7F307A06
Shop #: WSC 02334 785 00200
VCID: ECDD8590CF8C1A7ED7F-80B9

1 Fault Found:
00384 - Optical Databus
011 - Open Circuit - Intermittent

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Address 46: Central Conv. Labels: 4F0-910-289.lbl
Part No SW: 4F0 910 289 G HW: 4F0 907 289 G
Component: Komfortgeraet H22 0170
Revision: 01700022 Serial number: 01018085840000
Coding: 4619293
Shop #: WSC 02335 785 00200
VCID: 2E59CF98B910286E39B-807B

Subsystem 1 - Part No: 1K0 951 605 C
Component: LIN BACKUP HORN H03 1301

2 Faults Found:
01134 - Alarm Horn (H12)
012 - Electrical Fault in Circuit
01565 - Luggage Compartment Light (W3)
009 - Open or Short to Ground

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Address 47: Sound System Labels: 4F0-910-223-BO.lbl
Part No SW: 4F0 910 223 J HW: 4F0 035 223 G
Component: DSP-High C6 H09 0240
Coding: 0000026
Shop #: WSC 02323 785 00200
VCID: 254B30B4ECE66B36C81-8070

No Faults Found
or DTCs not supported by controller
or a communication error occurred

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Address 56: Radio Labels: 4E0-910-541.lbl
Part No SW: 4E0 910 541 T HW: 4F0 035 541 H
Component: TUNER EU/US/RDW H42 0630
Coding: 0000002
Shop #: WSC 02323 785 00200
VCID: 3163D4E4A82E3796249-FFFF

jbrentd

This probably confirms my thought on a bad fiber optic (MOST) connection.

http://wiki.ross-tech.com/wiki/index.php/00384

gsjohal

The optical databus open circuit faults will be the cause of your issue. I would recheck your retrofitted ami unit to make sure there are no right angle bends in the fibre optical cables. This prevents the light from travelling along the cable.
Otherwise one the control modules on the fibre optic cables has failed ( i.e phone, c.d, satnav, amp). When one of these fails electrically it pulls the whole system down and symptoms such as yours are common.

raj99

+1 on the above...check your connections THOROUGLY. try not to have too many sharp corners and ensure everything is plugged in VERY well.

jbrentd

Got home and checked the MOST connection on the back of the AMI. It was seated properly, but I unplugged it and then plugged it back in to make sure. Turned on the car to check...no improvement.

Ran the Optical Bus Diagnostic tool on VCDS. Below are the results. Looks like I have a problem (possibly electrical) with the telephone module. Now to find where it is located. Anybody got any ideas?

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Control Module Part Number: 4L0 910 468
Component and/or Version: J533__Gateway H06 0040

Optical Bus Diagnostic : Standard

Controller Electrical Optical
19-CAN Gateway OK OK
07-Control Head(High/D3) OK OK
0E-Media Player 1 OK OK
77-Telephone ERROR ERROR
47-Sound System OK OK
67-Voice Control OK OK
56-Radio OK OK
37-Navigation OK OK
0F-Digital Radio(SAT) OK OK

************************************************** **********

life4sk8

The telephone transceiver R36 is beneath floor carpet in drivers footwell. Did you check if you have water under the carpet??? If you lift both seat, there a black plastic cap hiding the electrical wire for your seat. Lift it from behind and remove it. Don't unplung the front connection. Just put your finger where you can and try to feel if there any water in there. If you want to access the bluetooth module, you have to remove the driver seat and trim around the door. Lift the carpet and there a black box under. That the bluetooth module. Water on the floor is one problem to ours cars... There two drain under the trim coming from the rad in front of the cabin air filter that could leak. Drain from the fan under the plenum chamber too can be problematic and all 4 from the sunroof can leak too.

jbrentd

Well, the carpets weren't wet, but I didn't poke my finger through that opening for the wires either. I'll check this evening. I'm surprised that the BT module isn't in a water tight enclosure...especially since it's in such a low spot in the cabin. hmm.