Mmi control unit stopped working. Possible 5F module replacement

[MatjjA5]

Hi all,

I have read quite a number of posts regarding issues with the 5F module so I wanted to post my issue to see if anyone can help (apologies, it is a little long winded).

everything was working fine on my 2012 A5 (facelift model), then the mmi control unit started randomly stopping working. Then after a few weeks it stopped working altogether. However, everything else in the car works radio, Bluetooth, navigation etc but I can only control them with the steering wheel controls or voice command (not the best with a Welsh accent). Took it to Audi who said the mmi control unit needed to be replaced, so they changed it (£1000+) but then said “sorry it wasn’t that, it is the 5F module” which the quote £3000+. So after telling them to take a long walk off a short pier, I decided to look into getting this fixed myself. I have tried to change the byte 14 bite 5, as discussed on this and a lot of other sites but no joy. I spoke to an independent garage who said I could purchase a used unit and they would recode and remove the CP but they wanted me to pay for diagnostic charge for them to check it out first etc.

I am just hoping that someone can offer some advise on 1, if I can possibly fix this myself using VCDS, or 2, I just buy a second had 5F module and get the garage to sort it.

I would appreciate any advice anyone can offer. I did a scan and I have stated the error code I am getting. I wanted to post a video of the unit but not sure how. Also, don’t know if this makes a difference but the two silver buttons to the right of the know on the control unit flash and I am able to do the three button reset but none of the other buttons work.

thanks

 

[***DK***]

Can you post the long coding number.
Go into the 5F module controller and you'll find the long coding. May be coded slightly wrong or something so would be good to see what is set.

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[MatjjA5]

The log code is: 130101020106A1ED05808F5E00002403E40000020000000000

and this is the entire scan:
Thursday,23,December,2021,08:32:03:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 21.3.0.0
Data version: 20210226 DS325.0
www.Ross-Tech.com


VIN: WAUZZZ8T4CA007061 License Plate:


Chassis Type: 8T-AU48 (8R0)
Scan: 01 03 05 08 09 0E 15 16 17 19 42 44 46 52 53 56 5F

VIN: WAUZZZ8T4CA007061 Mileage: 94640km-58806miles

01-Engine -- 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
0E-Media Player 1 -- 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
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
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010

-------------------------------------------------------------------------------
Address 01: Engine (J623-CGLC) Labels:. 03L-906-018-CGL.clb
Part No SW: 03L 906 018 JG HW: 03L 906 018 JL
Component: R4 2.0l TDI H25 9977
Revision: 45H25---
Coding: 0A194012232401080000
Shop #: WSC 65535 000 00000
ASAM Dataset: EV_ECM20TDI01103L906018JG 003006
ROD: EV_ECM20TDI01103L906018JG.rod
VCID: 78FF5DE7C3D3424BFB-802C

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

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 8K0-907-379-V1.clb
Part No SW: 8K0 907 379 BR HW: 8K0 907 379 BR
Component: ESP8 front H09 0090
Revision: -------- Serial number: --------------
Coding: 161D4C
Shop #: WSC 06325 000 00000
VCID: 0A1B172FA53F40DB9D-805E

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393) Labels:. 8K0-907-064-05.clb
Part No SW: 8K0 907 064 EE HW: 8K0 907 064 EE
Component: BCM2 2.0 H10 0530
Revision: 00002001
Coding: 03B00000000000000000
Shop #: WSC 06325 000 00000
VCID: 77FD5EDBC6CD4D33F2-8022

Subsystem 1 - Part No SW: 8T0 959 754 D HW: 8T0 959 754 D
Component: FBSAUDIB8 IDG H60 0072
Serial number: 0511000053250007

Subsystem 2 - Part No SW: 8K0 905 852 E HW: 8K0 905 852 E
Component: J764 ELV MLB H39 0046
Serial number: 2311000195236013

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels:. 8Kx-820-043-3Z.clb
Part No SW: 8K2 820 043 M HW: 8K2 820 043 M
Component: KLIMA 3 ZONEN H04 0123
Revision: D0000000 Serial number: 01190920110835
Coding: 342602C080
Shop #: WSC 06325 000 00000
VCID: 3365AACB923561130E-8066

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 DG HW: 8K0 907 063 AG
Component: BCM1 1.0 H14 0103
Revision: 07014001 Serial number: 00000005419101
Coding: 260000108034AFE00481408000001D0D0F9D838827090201000008000400020100000020000000
Shop #: WSC 00482 210 80117
VCID: 77FD5EDBC6CD4D33F2-8022

Subsystem 1 - Part No SW: 8T2 955 119 D HW: 8J2 955 119 Labels: 1KX-955-119.CLB
Component: WWS 200911 H13 0070
Serial number: SWF11090200139
Coding: 00FD11

Subsystem 2 - Part No SW: 8U0 955 559 B HW: 8U0 955 559 B Labels: 8U0-955-559.CLB
Component: G397_RLFS H06 0001
Serial number: 10015547
Coding: 02005D

Subsystem 3 - Part No SW: 8K0 941 531 AS HW: 8K0 941 531 AS
Component: E1 - LDS H03 0031
Serial number: 00000000002209113484

Subsystem 4 - Part No SW: 4H0 907 658 HW: 4H0 907 658
Component: AQ_Hum_Sensor H02 0002
Serial number: B448CBC5000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 0E: Media Player 1 (R41) Labels: Redir Fail!
Part No SW: 8X0 035 110 B HW: 8X0 035 110
Component: CDC-MP3-Pana H41 0480
Revision: 00000007
VCID: 2C57B1B74F0B3EEB4F-8078

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:| 8K0-959-655.clb
Part No SW: 8K0 959 655 N HW: 8K0 959 655 N
Component: AirbagVW-AU10 H44 0610
Serial number: 003KFD801LYT
Coding: 30533933363030303030554A305238543053
Shop #: WSC 06325 000 00000
ASAM Dataset: EV_AirbaECUVWAUDI010 003010
ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
VCID: 489FED27F3B3F2CB4B-801C

Crash sensor for side airbag: driver side:
Serial number: 6334MSME6453562EI

Front Passenger's Side Airbag Crash Sensor:
Serial number: 6344MSME6510694CH

Rear Side Airbag Crash Sensor (on driver's side):
Serial number: 6352QSME026036723

Passenger side rear thorax airbag crash sensor:
Serial number: 6362QSME1B5F3A44V

Crash sensor for front airbag: driver side:
Serial number: 63732SME715F0E6EI

Crash sensor for front airbag: front passenger side:
Serial number: 63832SME50625250P

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:. 8K0-953-568.clb
Part No SW: 8R0 953 568 Q HW: 8R0 953 568 Q
Component: Lenks.Modul H02 0171
Revision: 00000000 Serial number: 20110929000372
Coding: 000016
Shop #: WSC 06325 000 00000
VCID: 4FADC63B1EDD25F30A-801A

Component: E221 - MFL H03 0003

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:. 8T0-920-xxx-17.clb
Part No SW: 8T0 920 982 F HW: 8T0 920 982 F
Component: KOMBIINSTR. H23 0639
Revision: 00000000 Serial number: JS5204W9C
Coding: 3325000003012600010000
Shop #: WSC 06325 000 00000
VCID: 408FF507D383CA8B83-8014

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:. 8T0-907-468.clb
Part No SW: 8R0 907 468 C HW: 8R0 907 468 C
Component: GW-BEM 4CAN-M H10 0025
Revision: 1Y030014 Serial number: 1441Y118208062
Coding: 00CF07FF00
Shop #: WSC 06325 000 00000
VCID: 3F8DF6FBAE7DB573FA-806A

2 Faults Found:
00458 - Control Module for Battery Monitoring (J367)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 7
Reset counter: 200
Mileage: 94626 km
Time Indication: 0
Date: 2021.12.22
Time: 13:52:39

Freeze Frame:
Bin. Bits: 10111
Voltage: 11.60 V
Count: 6
Bin. Bits: 00000

03705 - Voltage Regulator
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 7
Reset counter: 200
Mileage: 94626 km
Time Indication: 0
Date: 2021.12.22
Time: 13:52:39

Freeze Frame:
Bin. Bits: 10111
Voltage: 11.60 V
Count: 6
Bin. Bits: 00000


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:. 8K0-959-793.clb
Part No SW: 8T0 959 793 G HW: 8T0 959 793 G
Component: TSG FA H09 0302
Revision: -------- Serial number: --------------
Coding: 011C02224001120102
Shop #: WSC 06325 000 00000
VCID: 4D91DC3314D117E378-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500) Labels:| 8K0-909-144.clb
Part No SW: 8K0 909 144 F HW: 8K0 909 144 B
Component: RCEPS H36 0507
Revision: 00001000 Serial number: 0004158583
Coding: 100000010001
Shop #: WSC 06324 000 00000
ASAM Dataset: EV_RCEPSAU48X 008014
ROD: EV_RCEPSAU48X_008.rod
VCID: 3467A9D79F3B662B17-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 8K0-907-064-46.clb
Part No SW: 8K0 907 064 EE HW: 8K0 907 064 EE
Component: BCM2 2.0 H10 0530
Revision: 00002001 Serial number: 0158223858
Coding: 011F068200B900408020003680000000
Shop #: WSC 06325 000 00000
VCID: 77FD5EDBC6CD4D33F2-8022

Subsystem 1 - Part No: 8K0 951 177
Component: DWA-Sensor H02 0040

Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels:. 8K0-959-792.clb
Part No SW: 8T0 959 792 G HW: 8T0 959 792 G
Component: TSG BF H09 0302
Revision: -------- Serial number: --------------
Coding: 011C02224001120102
Shop #: WSC 06325 000 00000
VCID: 4C97D137EFCB1EEB6F-8018

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----) Labels: 8K0-907-801-V2.clb
Part No SW: 8K0 907 801 J HW: 8K0 907 801 J
Component: EPB-4 H01 0001
Revision: -------- Serial number: 00000000001138
ASAM Dataset: EV_ParkiBrake 001022
ROD: EV_ParkiBrake_AU48.rod
VCID: 366393DF8947743B29-8062

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (R) Labels: Redir Fail!
Part No SW: 4G0 035 061 G HW: 4G0 035 061
Component: Radio U DAB H52 0097
Revision: AB001007 Serial number: 233IK0B7500040
Coding: 010103020100000001
Shop #: WSC 06325 000 00000
VCID: 2149508338C9E383EC-8074

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794) Labels:. 4E0-035-6xx-5F.clb
Part No SW: 8R2 035 666 HW: 8R2 035 666
Component: H-BN-EU H42 0413
Revision: -------- Serial number: 066IY0B7500536
Coding: 130101020106A1ED05808F5E00002403E40000020000000000
Shop #: WSC 06325 000 00000
VCID: 76E353DFC1C7343BE9-8022

Subsystem 1 - Part No: 8R0 060 884 N
Component: EUR 2011 1205

Subsystem 2 - Part No SW: 8R0 919 604 HW: 8R0 919 604
Component: DU7 High H41 0104
Serial number: A130I40BS023428

Subsystem 3 - Part No: 8R0 060 961 B
Component: CD-Database 3371

1 Fault Found:
00658 - Control Head
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 200
Mileage: 94626 km
Time Indication: 0
Date: 2021.12.22
Time: 13:51:40

Freeze Frame:
Voltage: 11.60 V


End-------------------------(Elapsed Time: 03:17)--------------------------

 

[***DK***]

Looks like you have a CAN Gateway wire issue as you have two faults there
Address 19: CAN Gateway (J533)
one for the Control Module for Battery Monitoring which i think must be a module on the end of the battery wires (could be wrong) and one for Voltage Regulator which i think is on the alternator.

Have you tried disconnecting battery for a few mins and reconnect? check wires there and at alternator maybe?

 

[MatjjA5]

No not tried that. I think the battery is the same one it came out of the factory with lol so I was assuming that those errors was due to that plus the stop/start doesn’t work, which from looking online, it could be because the battery is old and doesn’t have enough juice in it.
But it is certainly worth a shot. I will give it a go later and let you know the out come.

 

[***DK***]

Yeah give battery replacement a shot. Let us know, I'm intrigued

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[MatjjA5]

Just a bit of an update, I have not had a chance to try disconnecting the battery but I found a video on how to check the battery via vcds ( thanks to unlimited diy) and the results were not great. Based on the video, I should be seeing the voltage etc from the battery but it’s not returning anything. So I am assuming I may need to get a new CAN gateway as well as possibly a new battery.
I will post an update once I have more info

 

[***DK***]

I expect this might be the monitoring part but you should check the part number on your current one at the battery terminal.

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I kinda doubt it will be the complete CAN module that's failed as you are accessing it in that screen to read the numbers (part 8t0907468clb).

I think if it was dead you wouldn't be able to access it. If it is that I'm pretty sure it's up under the glove box. Quite a few Chinese aftermarket bits like rear view cameras have wire harnesses that plug into that and back out again. If you have any aftermarket bits that might be worth checking.



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[***DK***]

This thread also looking potentially useful if you haven't already seen.

VCDS - 61 Battery Regulator - No response from controller

www.a5oc.com

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[MatjjA5]

Thanks for them, I will have a read through them shortly, as I have just been in the boot to check the battery etc and found a lot of water. In the pic, I had already mopped up quite a bit, but you can still see a little water (in red and my car is parked on a slant). From what I can see, the right side was all wet (in green) so I’m guessing it has come in from there and the cable I have marked blue, which goes around to the battery and to the black box (which I believe is the start/stop voltage regulator part no 8k0959663) is wet, so my guess is water may have got into here. I will have a read of the posts you have listed to see if they mention anything

 

[***DK***]

Ah wow yeah water getting in these cars is a nightmare. What about the side cubby hole where the radio receiver and amp etc are stored. If water drops in there it's usually the first cause of the MMI going out.

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[MatjjA5]

Actually, I just read the second link you posted and I think that might be it one of the issues. I will have a look at that to see if it’s the same

 

[MatjjA5]

Ah wow yeah water getting in these cars is a nightmare. What about the side cubby hole where the radio receiver and amp etc are stored. If water drops in there it's usually the first cause of the MMI going out.

Sent from my ONEPLUS A6013 using Tapatalk

Well the guy at Audi mentioned the radio unit (called it the 5F module…..) but that is in the left side, plus I tried a second hand unit and it was the same. I will have a look at the second link you posted to see if I can see anything

 

[MatjjA5]

This thread also looking potentially useful if you haven't already seen.

VCDS - 61 Battery Regulator - No response from controller

www.a5oc.com

Sent from my ONEPLUS A6013 using Tapatalk

Just had a look in the area on the right, as in the link, and it looks terrible. A lot of water there, which looks as though it been there a while, bear in mind Audi said they checked all the cabling fuses etc, clearly didn’t check here. I have mopped up as much as I can but it’s started raining again, so I just got to wait till I get some dry weather to pull out all the carpet etc to see if I can see what’s there but the wrapping around the cables are soaking wet

 

[***DK***]

Ah yeah that's not good. Mine was like that on the other side and sloshing around the radio receiver which cut out my MMI once. That was caused by blocked sunroof drainage at the rear corners of the sunroof.
Fortunately I caught it early and after it dried out it was ok.

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[MatjjA5]

Just an update. Checked the cable as suggested in the other link, it was broken and badly corroded. So fixed this and now I am getting battery readings in vcds plus the start stop is now working.
Only thing is now I have got 3 error codes for the 5f unit :

Address 5F: Information Electr. (J794) Labels:. 4E0-035-6xx-5F.clb
Part No SW: 8R2 035 666 HW: 8R2 035 666
Component: H-BN-EU H42 0413
Revision: -------- Serial number: 066IY0B7500536
Coding: 130101020006A1ED05808B5E00002403E40000020000000000
Shop #: WSC 06325 000 00000
VCID: 76E353DFC1C7343BE9-8022

Subsystem 1 - Part No: 8R0 060 884 N
Component: EUR 2011 1205

Subsystem 2 - Part No SW: 8R0 919 604 HW: 8R0 919 604
Component: DU7 High H41 0104
Serial number: A130I40BS023428

Subsystem 3 - Part No: 8R0 060 961 B
Component: CD-Database 3371

3 Faults Found:
00658 - Control Head
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 200
Mileage: 94626 km
Time Indication: 0
Date: 2021.12.22
Time: 13:51:40

Freeze Frame:
Voltage: 11.60 V

00658 - Control Head
012 - Electrical Fault in Circuit
Freeze Frame:
Fault Status: 01101100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 205
Mileage: 94761 km
Time Indication: 0
Date: 2021.12.29
Time: 15:18:38

Freeze Frame:
Voltage: 12.10 V
Bin. Bits: 001

03157 - Functionality limited due to Communications Disruption
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 6
Fault Frequency: 2
Reset counter: 245
Mileage: 94761 km
Time Indication: 0
Date: 2021.12.29
Time: 14:47:53

Freeze Frame:
Bin. Bits: 00000000 00000000
Bin. Bits: 00000000 10000000
Bin. Bits: 00000000 00000000
Bin. Bits: 00000000 00000000
Bin. Bits: 00000000 00000000

If I can get this fixed and get the mmi control unit working (plus I got to check the drivers heated mirror as that has an error also) then I’m a very happy man

 

[***DK***]

Good work looks like your getting closer to fixing this. Gotta be a wire to the MMI broken or unplugged somewhere.

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[MatjjA5]

Little update - stop start has stopped working but he battery is only at 24-25ah which is really low, so I guess I’m needing a new battery. But after checking a few forums, I noticed on the 5F part of the full scan, there should be 4 subsystems but mine is only showing 3 and guess which one that is. So I will need to work out why it’s not appearing, possibly a faulty cable somewhere. So will update you once I can do further checks.

also, the radio is now giving me a fault code (03278 - functionality limited due to missing messages) but the radio is working fine. Could be connected to the low battery and control module issue but will also update you once I know more

 

[carri]

Little update - stop start has stopped working but he battery is only at 24-25ah which is really low, so I guess I’m needing a new battery. But after checking a few forums, I noticed on the 5F part of the full scan, there should be 4 subsystems but mine is only showing 3 and guess which one that is. So I will need to work out why it’s not appearing, possibly a faulty cable somewhere. So will update you once I can do further checks.

also, the radio is now giving me a fault code (03278 - functionality limited due to missing messages) but the radio is working fine. Could be connected to the low battery and control module issue but will also update you once I know more

Any update?
I have the same error codes on VCDS

 

[losmi200]

@MatjjA5

Please,
I have the same problem as you. Wather, start/stop not work. The same two errors appear for the voltage regulator and battery monitoring.
I bought a new battery and of course the problem was not solved. At my place, water appeared in the same place and everything was so wet and smelled.
I solved the problem with the water, but I still have two errors, a new battery and a start/stop that doesn't work.
Do you remember or maybe have photos or a video of which wires are involved? What colors are they and where exactly did you find the problem with the wires?

Thanks a lot for the answer!

 

[losmi200]

@MatjjA5

after checking the wires under the right rear light i ran into a problem. the three wires that were connected to each other were no longer together. i connected them and the start/stop system works again the battery gauge also shows how full the battery is again. thanks a lot for the idea where to check the wires.
Violet-blue wires