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Audi A8 3.0 TDi 2009 - Electric handbrake module locked - Fixed #

Posted by Ian Waring on March 13, 2014, 8:10 pm

Year of Manufacture *: 2009
( Optional ) Engine Code or CC: 3Ltr TDi

Carrying on from previous thread - separate issue has arisen. Original problem was no voltage supply to O/S/R Brake Caliper.

Replaced O/S/R Brake Caliper with new Rear Brake Pads. Rear Handbrake now working but could not enter Rear Brake Pad adaptions.

Road test vehicle. Handbrake worked and no dashboard warning lights at this stage but still had fault code for Brake Pad wear and still unable to set adaptions.

Contacted Autodiagnos helpline who asked me to try Adaptions and Settings. No data was entered. However, at this point handbrake warning lights start flashing and handbrake would now not work. New Fault Code 'basic settings not carried out'.

It appears the Module has now locked. VW say running vehicle for 20 mins or so should resolve the problem where fault code would appear as intermittent and would therefore be able to be deleted and Handbrake would start to work. Have tried this without any success.

Not sure as to if/what Autodiagnos has played a part in this, but no data was entered. Not certain whether just a coincidence.

Autodiagnos are going to download some software tomorrow but am very sceptical as to what help this will be.

Cannot understand why everything was working one minute and the next the Module locked. Has anybody experienced this particular scenario?

Cheers
Ian

Re: Audi A8 / Electric Handbrake Module Locked

Posted by David Clayson <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1143' width='330' height='300' border=0 style='border:none;'> on March 13, 2014, 9:18 pm, in reply to "Audi A8 / Electric Handbrake Module Locked"
David Clayson

Hi Ian

Is this any help

http://wiki.ross-tech.com/wiki/index.php/Audi_A8_(4E)_Parking_Brake

David

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 13, 2014, 9:35 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Ian Waring

Hi David,

Thanks for link. It's a actually a broken link, but I have already been directed there on my previous thread. Nothing in the actual article directly refers to my scenario as it now stands.

Cheers
Ian

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Steve Harrison <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1363' width='330' height='300' border=0 style='border:none;'> on March 14, 2014, 8:25 am, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Stephen Harrison

Ian

I seem to remember that on A8 that the brake pad thickness has to be set.

I am sure someone with more knowledge will confirm if my memory is playing tricks but it may be worthwhile looking into that aspect.

Steve

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Peter Keverne <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2835' width='330' height='300' border=0 style='border:none;'> on March 14, 2014, 9:01 am, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Peter Keverne

hi Ian

yes steve is right you have to tell it how thick new pads are in adaptions and before you close caliper. might be better using different tool if you can.

peter

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 14, 2014, 10:51 am, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"

Am replying on Ian's behalf.

He attempted to enter Pads thickness into Adaptions and Settings, but was unable to do so. It would not allow him to do this. This is where the problems arose.

Re: Audi A8 / Electric Handbrake Module Locked

Posted by sean savage <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5559' width='330' height='300' border=0 style='border:none;'> on March 14, 2014, 1:25 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Sean Savage

Did a 2008 A8 last week with similar issue, pad thickness fault stored all the time, tried with autodiagnos and it said it was done but fault still there, did it with snap on solus ultra and it worked a treat. if you didnt measure pads they are 11mm. vcds also does this. Have to say i have lost all faith in autodiagnos now to be honest. the snap on ultra is a crack all round scanner

sean

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Jon Morgan <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3190' width='330' height='300' border=0 style='border:none;'> on March 14, 2014, 2:57 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"

Stop trying & leave the car alone for 1 hour. come back & see whether the fault logs as sporadic yet.

If still no joy after this, disconnect the battery with the ignition on to see if you can set the basic setting fault as sporadic - if you can get it to log as sporadic rather than static you should have a chance of setting the pad thickness followed by the motor basic settings.

This is a menstrual system & logic is not your friend while trying to reset it.

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 16, 2014, 9:37 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"

Sean - I have spoken to Autodiagnos during this process and have (eagerly) passed on your experience and comments - particularly with regard to the success you had with SnapOn.

Cheers
Ian

Fixed #

Posted by Ian Waring on March 16, 2014, 9:53 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Edited by board administrator March 19, 2014, 2:58 pm

This problem has been particularly trying.

Autodiagnos basically threw in the towel, having gone as far as they could and they assumed the Module could not be unlocked.

However, another garage with experience of this particular problem, after some thought, suggested he would like to try to reprogram the original Module which was successful.

Handbrake now working correctly and able to finally reset Adaptions and Setting for Brake Pads.

Customer is thrilled not to be forking out for a new Module.

UKautotalk did not disappoint keeping me (just about) sane and giving me food for thought throughout some hairy moments and I have certainly learnt a lot in the process and lived to fight another day. Thanks a lot lads

.

Cheers
Ian

Re: Audi A8 / Electric Handbrake Module Locked

Posted by keith brown <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1429' width='330' height='300' border=0 style='border:none;'> on March 19, 2014, 2:33 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"
Keith Brown

hi ian ,did u have battery support connected during your proceedure,we have had lots of trouble with these if not supported hth

Re: Audi A8 / Electric Handbrake Module Locked

Posted by Ian Waring <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5344' width='330' height='300' border=0 style='border:none;'> on March 19, 2014, 7:56 pm, in reply to "Re: Audi A8 / Electric Handbrake Module Locked"

Hi Keith,

Yes, I have the latest SnapOn battery charger with using the flash program.

Sometimes its hard to find an answer to why its all gone pear shaped!

Cheers
Ian

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