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  1. #1
    Reverse Gear

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    ABS and ESP lights - Brake pressure sensor fault - Help!

    I am grateful for all the practical help and advice on here!
    I recently had ABS, ESP and flashing glow plug lights with no brake lights. This was cured by fitting a new brake light switch. Since then I have an intermittent problem with the ABS and ESP lights coming on when I brake and remaining on until the car is turned off and on.

    I took the car (2003 A6 Avant 1.9 Tdi) to local specialists today. The VAG reader came up with
    Brake Pressure Sensor 1 G201 01435

    They suggested this could be a new ABS control unit at over 1000. I'm hoping it could be something simpler. Could it be connected to the new brake switch? Is this worth changing?
    Any suggestions will be gratefully received!

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  3. #2
    Reverse Gear

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    I think I may have cracked it! I reinstalled the brake light switch following the excellent instructions posted on
    http://forums.vwvortex.com/zerothread?id=1158315
    Since then I have had no ABS or ESP lights.
    I think the problem was that the switch was installed so that it took quite a movement of the brake pedal before the rear brake lights came on. Thus the ABS controller was detecting pressure before it got the signal from the brake switch. I have now got the brake lights coming on with the slightest brake pedal movement.

    I hope this is useful!

  4. #3
    vrbob's Avatar
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    That helped me alot so thanks for the info as this happened to me this morning when i went to go to work. Quick trip to audi for a new switch followed the guide as per the link and hey presto car is all good again.

    Just to say the brake switch i got from Audi today is a revised model so it looked completly different but hopefully works better than the last version.

    Also the link to the vwvotex website is very useful as i manged to fit the switch without breaking it as it seems like it might be a little tricky othewise.
    Last edited by vrbob; 24th March 2010 at 14:04.
    Audi S3 8L BAM 225 2002 - Ming Blue : Silver Heated Leather, Armrest, RNS-E - Bose, Alloy Mirrors, 18" RSTT`s, Sunroof, Cruise, AutoDim Mirror & Usual S3 Extras.
    Mods : Badger 5 Stg 2 Custom Map, FMIC, 3" DP & 200 Cell Cat, 007P, Jetex Filter & 80mm TIP & Heatshield, Complete LED Kit, Gen VW Aero Wipers, Full Powerflex Kit, R32 RARB, AP Shocks & Springs, 15mm Front & 20mm Rear Spacers, BB Uprated Actuator,
    N249 Delete & Catch Can, AP TVR 4Pot Brakes & DS2500`s, Sachs Carbon/Kevlar Clutch

  5. #4
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    I am very pleased you found this useful! The knowledge on here has been very valuable to me.

 

 

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