Audi A6 C5 Tiptronic doesn't work (P0702)

   #1  

turbokutonen

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Hello!

My Audi A6 C5 Allroad 2.5 TDI AKE 2000 has run to some problems. During the weekend I was in the warm garage doing maintenance (changed CV joint and track rod end). After that I drove my car outside where was -25C, and noticed that my steering wheel wasn't straight. It was little bit to the left while driving straight. Next day after a very cold night, I did an test drive and everyhting was fine except that steering wheel was to the left. Until I noticed that the tiptronic didn't change gears at all.


On the dashboard where is visible current selected gear, there was all lights "on" like I had every gear in. P,R,N,S,D were all "on". Car was powerless, and even that manual gear select +/- didn't work. So i drived back home. After that I checked with VCDS I noticed it had the 4th gear in all the time. I checked the faultcodes and got only one code from transmission:


Code:
Sunday,27,January,2019,14:05:08:61411
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.1.0 (x64)
Data version: 20190114 DS296.0
www.Ross-Tech.com


VIN: WAUZZZ4B42N026830   License Plate: ILT-788
Mileage: 314660km-195520mi   Repair Order: Auto.Vaihteisto vika


Chassis Type: 4B (4B - Audi A6/S6/RS6/allroad C5 (1998 > 2005))
Scan: 01 02 03 06 08 15 16 17 18 22 34 35 36 37 45 55 56 57 65 67
          75 76 77
 
VIN: WAUZZZ4B42N026830   Mileage: 314660km-195520miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 059-907-401-AKE.clb
   Part No: 4Z7 907 401 B
   Component:  2.5l/4VTEDC G000AG D06    
   Coding: 01016
   Shop #: WSC 02325  
   VCID: 3C7CE7332C8444AAC1-4B00

   Subsystem 1 - Part No: 00015059
   Component: 130 106EC150_1.R75438336187  
   WAUZZZ4B42N026830     AUZ7Z0A1903996

No fault code found.
Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 01V-927-156.lbl
   Part No: 4Z7 927 156 H
   Component: AG5 01V 2.5lTDI RdW 2121  
   Coding: 00001
   Shop #: WSC 00000  
   VCID: 4B9EB4EF792AF31278-513C

1 Fault Found:
17086 - Transm. Control Module Electrical Malf. (SAE) or Control Module Defective (VAG) 
            P0702 - 35-00 - 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 8D0-907-389.lbl
   Part No: 4Z7 907 389 
   Component: ABS/ESP allrad      D57  
   Coding: 06357
   Shop #: WSC 02325  
   VCID: 09124EE733D6A1028A-513C

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4B0-820-043-MY2.lbl
   Part No: 4B0 820 043 AD
   Component: A6-Klimavollautomat 0104  
   Coding: 00003
   Shop #: WSC 02325  
   VCID: 5CBC47B3CCC464AAE1-2578

1 Fault Found:
01592 - Air Quality Sensor (G238) 
            57-00 - Electric Circuit Failure

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4B0-959-655-AI84.lbl
   Part No: 4Z7 959 655 D
   Component: Airbag 8.4E         3000  
   Coding: 0000106
   Shop #: WSC 02325 785 00200
   VCID: 50A4A383C00CD0CA0D-5120

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 4B0-920-xxx-17.lbl
   Part No: 4B0 920 933 M
   Component: KOMBI+WEGFAHRS. VDO D07  
   Coding: 04160
   Shop #: WSC 00001  
   VCID: 2D5ADA77E7FEDD2246-5120
   WAUZZZ4B42N026830     AUZ7Z0A1903996

No fault code found.

-------------------------------------------------------------------------------
Address 34: Level Control        Labels: 4Z7-907-553.lbl
   Part No: 4Z7 907 553 E
   Component:  - 2C1A1          D040    
   Coding: 25500
   Shop #: WSC 09999  
   VCID: 479688DF654217725C-5120

1 Fault Found:
01772 - Signal from Level Control Pressure Sensor (G291) 
            27-10 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 35: Centr. Locks        Labels:. 4B0-962-258.lbl
   Part No: 4B0 962 258 K
   Component: Zentralverrieg.,DWA D35  
   Coding: 06987
   Shop #: WSC 02325  
   VCID: 3162C607FBC6B9C262-4ECA

5 Faults Found:
01560 - Passenger Door 
            59-10 - Can't Unlock - Intermittent
01561 - Rear left door 
            59-10 - Can't Unlock - Intermittent
01562 - Rear right door 
            60-00 - Won't Safe
01560 - Passenger Door 
            61-10 - Won't De-Safe - Intermittent
01561 - Rear left door 
            61-00 - Won't De-Safe

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No: 4B0 959 760 B
   Component: Sitzmemory R1 F     0101  
   Coding: 00001
   Shop #: WSC 00000  
   VCID: 2C5CD773DCE4D42A51-4B00

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 4B0-035-192-RNSD-37.lbl
   Part No: 4B0 035 192 M
   Component: RNS 4.1 H06    BNO 0017  
   VCID: 2756285FC502F772BC-4ACE

1 Fault Found:
00862 - Antenna for GPS Navigation (R50/R52) 
            36-00 - Open Circuit

-------------------------------------------------------------------------------
Address 45: Inter. Monitor        Labels: 4B0-951-173.lbl
   Part No: 4B0 951 173 
   Component: Innenraumueberw.    D03  
   Coding: 00002
   Shop #: WSC 02325  
   VCID: 60C47343E0AC404ABD-4B32

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 4Z7-907-357.lbl
   Part No: 4Z7 907 357 
   Component: dynamische LWR       D06  
   Coding: 00030
   Shop #: WSC 02325  
   VCID: 040C5FD314F4FC6AF9-4B7C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 4B0-035-192-RNSD-56.lbl
   Part No: 4B0 035 192 M
   Component: Radio          BNO 0001  
   Coding: 00117
   Shop #: WSC 02325  
   VCID: 2756285FC502F772BC-4AE6

No fault code found.

-------------------------------------------------------------------------------
Address 57: TV Tuner        Labels: 4D0-919-146.clb
   Part No: 4D0 919 146 B
   Component: TV Tuner        H05 0704  
   Coding: 0000160
   Shop #: WSC 00000 000 00000
   VCID: 28542B63981CF80AB5-5120

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: 8E0-919-283-8E2.lbl
   Part No: 8E0 919 283 
   Component: Parkingsyst. A6 RDW D09  
   Coding: 01186
   Shop #: WSC 02325  
   VCID: 6DDA1A77277E1D2206-513C

1 Fault Found:
01627 - Sensor for Parking-Aid; Front Mid-Right (G253) 
            37-00 - Faulty

End-------------------------(Elapsed Time: 04:44)--------------------------

After that, I took TCU out and got it inside to warm up. I kept it in warm for 2 days, plugged it in again, heated car from inside, and deleted faultcodes. Fault gets back.

I have no idea what should I do next. Do I need to buy new TCU, or is there something else I should check before that?

Thanks for help!
 
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   #2  

HMC

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I think the first thing to do is retrace your steps of fitting the CV and track rod end, did you displace/disconnect/damage a TCM connector. Have you checked the fuses that power the TCM. You also need to get the wheel alignment done as the track rod end is not in the same place or has different dimensions from the original.
Regards HMC
 
   #3  

turbokutonen

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Thanks for tips!

What should I look for at wheel surrounding? Is there somewhere TCM connector or something? I have checked all the fuses on the drivers side inside car, but I have no idea where the TCM fuse is. Is it where is ECU, under the hood and on the drivers side?

I will get the Wheel alignment done as soon as I get this sorted out, I dont want to drive with that car in case if that would brake the transmission completely… Getting pretty frustrated, should get the car working so I could go to work :banghead:
 
   #4  

turbokutonen

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I think the first thing to do is retrace your steps of fitting the CV and track rod end, did you displace/disconnect/damage a TCM connector. Have you checked the fuses that power the TCM. You also need to get the wheel alignment done as the track rod end is not in the same place or has different dimensions from the original.
Regards HMC
I checked all fuses, they are okay. Could wheel alignment differense cause this? Or some other minor thing? Is there any way to see/test my TCM condition?
 
   #6  

turbokutonen

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