Notices
 
 

  

User Tag List

Thread: Front brake pad sensor wiring

Results 1 to 7 of 7
  1. Front brake pad sensor wiring 
    #1
    Join Date
    Dec 2010
    Location
    Worcestershire
    Posts
    32
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5 Post(s)
    Does anyone know where the front pad warning wiring goes to? It seems to disappear into the engine bay....

    My warning light comes on (turning left usually triggers it). Front pads are fine, I've replaced the sensor, and replaced the rear pads that were low-ish. I can only surmise that there is a dodgy connector or break in the wiring harness. Just need to find the other end to test.
    All hints and tips gratefully received.
     
    0 0 0
     

  2. Re: Front brake pad sensor wiring 
    #2
    Join Date
    Feb 2016
    Location
    Blaydon, North east England
    Posts
    386
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    53 Post(s)
    When Audi did my rear pads couple months ago they said that I had corrosion on the front wiring harness for the pad wear sensors and ABS sensors, they listed a repair harness for about £70. I will have a look through my paperwork later to see if I can find it. In my case it wasn't a corroded harness they just left one of the sensors unplugged.

    The sensors appear to be a loop of wire that breaks connection when worn through. So try a known bit of good wire and plug it into sensor plug to see if fault goes.

    I had a slight lip on my discs and it was enough to wear away the wire and trigger the fault. I replaced my pads with Bosch ones from eurocarparts and they came with new pad wear sensor.
    2015 A6 Allroad 3.0TDi 218 CRTE - NEW
    2012 A6 Avant 3.0TDi Multitronic - OLD
     
    0 0 0
     

  3. Re: Front brake pad sensor wiring 
    #3
    Join Date
    Dec 2010
    Location
    Worcestershire
    Posts
    32
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5 Post(s)
    I've already fitted a new sensor (although it turns out there was nothing wrong with the old). The problem is with the wiring that the sensor plugs into that disappears into the engine bay. I need to find the other end of it to be able to test....anyone know where it goes?
     
    0 0 0
     

  4. Re: Front brake pad sensor wiring 
    #4
    Join Date
    Jan 2016
    Location
    Sweden
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Hello . I replaced that wiring on my car recently ... te repair harnest for my car was . 4g0972251e

    I you have any questions just ask
     
    0 0 0
     

  5. Re: Front brake pad sensor wiring 
    #5
    Join Date
    Jan 2016
    Location
    Sweden
    Posts
    7
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
     
    0 0 0
     

  6. Re: Front brake pad sensor wiring 
    #6
    Join Date
    Mar 2017
    Location
    Aberdeen
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Hi,

    I know this thread is old but I thought it might be helpful to have my solution to the problem on the web in case anyone else searches for it in the future. My car was a 2008 B8 8K A4 but I think it's relevant here too as the wiring harness looks the same.

    I had this problem where the wires that lead to the brake sensor in the latter part of the harness were corroded when I chopped off the faulty sensor (totally black!) so twisting them together wouldn't work. I either had the option of replacing the wiring harness or finding another solution. The expense of the new harness and the faff taking off wheel arch covers and pulling the cable through, etc made me decide to do the latter. I didn't know where the cable led to inside the car so I jacked the car up so that the wheel dropped (could have removed the wheel but found that unnecessary) and then I followed the cable up to the top of the wheel arch and unclipped the two clips that were holding the cable up (pushed the clips through from the engine bay side). This released the cable which at this stage has four wires inside - two for the brake pad sensor and two for the ABS. I carefully scratched off the plastic sheath of the cable to reveal these wires. I left the yellow and red untouched (they are the ABS wires) and snipped the brown and black wires then joined together the brown and black wires together. I decided to solder but a clip would be fine. I then taped up the cable and fastened it to the engine bay again.

    Hope this helps someone else in the future.
     
    0 1 0
     

  7. Re: Front brake pad sensor wiring 
    #7
    Join Date
    Apr 2016
    Location
    London/UK
    Posts
    146
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    23 Post(s)
    I have the same problem now
    A6 c7 2.0 2013

    Managed to unplug te abs and looked at some online diagrams too but they won't match my connector

    The diagram I was looking at its saying g that pin9 has my pads sensors , but my connector doesn't have a pin 9 cable

    What am I doing wrong here?


    Screenshot_20230321_140213_Gallery.jpg

    20230321_121342.jpg


    EDIT: NVM, pads don't go to ABS
    Attached Images
    Last edited by johnro79; 07-04-2023 at 06:35 AM.
     
    0 0 0
     

Similar Threads

  1. Where' my MAF sensor wiring?
    By Adwarrior in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 1
    Last Post: 04-04-2017, 02:31 PM
  2. MAP sensor wiring.
    By Tom A. in forum Passat - B6 Forum - 2005 - 2010
    Replies: 8
    Last Post: 21-08-2013, 09:50 PM
  3. Question Front Brake Pad Sensor
    By Jockeyblade in forum Golf MK4 - 1999 - 2004
    Replies: 4
    Last Post: 31-01-2012, 04:40 PM
  4. Airbag front crash sensor wiring!
    By noddyr in forum Audi A4 - B6 Forum - 2002 - 2005
    Replies: 0
    Last Post: 22-09-2009, 03:30 PM
  5. Please Help Brake switch and brake pressure sensor issue??
    By P.M.G in forum Audi A3 - Archive Topics
    Replies: 0
    Last Post: 07-02-2009, 06:20 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


 



  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - Scania - MAN - Ducatti - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -