Coding OUT trailer function coding issue abs

t6love

New Member
Hello everyone I purchased a T6 which the traction on and parking sensors not working also tpms light flashing.
Looking in to faults found towbar bar control module missing and loom chopped ..so not needing the towbar decided to code out the tow bar iv got parking sensors working tpms was coded as installed but my t6 does not have it so coded out tpms light gone.
Issue now is with traction light staying on please any help would be highly appreciated as my brain is dead nw please find attached vcds scan
 

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What fault codes are you now getting that is causing the ABS/traction light to be on?

Maybe it needs a coding change/adaption in the ABS module to show no trailer module present.
 
Last edited:
What fault codes are you now getting that is causing the ABS/traction light to be on?

Maybe it needs a coding change/adaption in the ABS module to show no trailer module present.
It's defo that what you said as I had same code in pdc and parking sensors where not working I coded out trailer hitch and fault cleared and parking sensors started working
 
So it’s all resolved now ?
No traction light is still on with the fault above in picture just to ad i changed byte 15 on abs it was d3 which means vehicle has tpms i changed it to e6 which got rid of tpms light flashing but u code remains alongside traction light
 
These are some instructions for coding a towbar, so assume assume you could do the reverse to undo the coding...


It includes a few changes in the ABS module.

Note - do this at your own risk.
 
These are some instructions for coding a towbar, so assume assume you could do the reverse to undo the coding...


It includes a few changes in the ABS module.

Note - do this at your own risk.
Iv already tried this didn't work
 
If you do a Blockmap log dump of the 03 module, does it give any information on the trailer. eg

1767312424080.webp

1767312612512.webp

ETC
 
Have you got VCDS Auto-Scan before you started coding out trailer?
 
I haven't sorry but the only thing iv changed in necessary modules is trailer function
Ah... how about coding history log file C:\Ross-Tech\VCDS\Debug\CodingLog.CSV

Per coding the van has adaptive cruise control. But obviously it doesn't work currently - because of the faults in controller 13?

Please post blockmap files of the controllers XX:
01-Engine​
03-ABS​
10-Park Assist​
13-Auto Dist. Reg.​
17-Instruments​
Preferably engine idling

[VCDS]
[Applications]
[Controller Channel Map]
- Single Controller Address = XX
- Login or security code access code: Leave blank
- Function: Measuring values
- Output: CSV file
[Go]

1767343376865.webp

The result CSV-files are saved into directory C:\Ross-Tech\VCDS\Logs
 
Ah... how about coding history log file C:\Ross-Tech\VCDS\Debug\CodingLog.CSV

Per coding the van has adaptive cruise control. But obviously it doesn't work currently - because of the faults in controller 13?

Please post blockmap files of the controllers XX:
01-Engine​
03-ABS​
10-Park Assist​
13-Auto Dist. Reg.​
17-Instruments​
Preferably engine idling

[VCDS]
[Applications]
[Controller Channel Map]
- Single Controller Address = XX
- Login or security code access code: Leave blank
- Function: Measuring values
- Output: CSV file
[Go]

View attachment 312882

The result CSV-files are saved into directory C:\Ross-Tech\VCDS\Logs
Yes that is correct acc is not working at the moment due to faults in abs and acc il get blockmap over to you guys shortly thank you so much for this
 
Hi sorry about the delay was waiting on tech please find attached blockmaps
 

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Hi sorry about the delay was waiting on tech please find attached blockmaps
Thanks.
Could you please make additional 03-ABS blockmaps as below
A) Ignition ON- engine OFF​
B) Engine idling​
C) Engine idling - take the blockmap after turning steering wheel left 90 deg, then over to right 90 deg (keep at right for the blockmap)​
 
Hello guys sorry for the delay firstly I want to thank everyone especially mmi the legend you put us on the right track so we performed basic settings on the steering angle sensor through abs module and wallaaa lights gone faults cleared and acc working as it should.
Puzzled though why there was no steering angle fault but had databus missing message anyhow im over the moon once again thank you all.
 
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