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Brake lights stay on whilst driving..

Discussion in 'A3/S3/Sportback (8P Chassis)' started by a3_dan, Dec 19, 2009.

  1. a3_dan

    a3_dan Member

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    As above, noticed today that my brake lights seem to be stayng on all the time, as if my foot is on the brake constantly.

    Had a search on here and seems most probable suspect is the brake switch behind the foot pedal, has anyone else had this before? Will i need a new one or will it just need a clean up of connectors??:confused:

    Cheers,
    Dan
     
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  3. VWAddict

    VWAddict Member
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    Almost certainly replace switch.

    Keith
     
  4. a3_dan

    a3_dan Member

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    Cheers.

    Anyone know the part number? Is this a easy replace job?
     
  5. Scott

    Scott Well-Known Member

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    I think this is right...

    1K2 945 511 RDW

    Removing

    – Remove driver's storage compartment
    – Unplug electrical connector.
    – Turn brake light switch anti-clockwise 45° to remove.

    Installing

    Installation is performed in reverse sequence; note the following:

    – Pull out plunger of brake light switch as far as it will go.

    Note: On some types of brake light switch it is not necessary to pull out the plunger.

    – Insert retainer tabs of switch in recesses provided in mounting assembly and secure by turning clockwise 45°.
    – Attach plug for brake light switch.

    Note: When installing, brake pedal must not be pressed.

    - The plunger adjusts itself automatically when the brake light switch is inserted.
    – Check operation of brake lights both with brake pedal pressed and at rest.
     
  6. a3_dan

    a3_dan Member

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    Thank for that Scott. Just got the bugger out (Cor the storage compartment takes some pulling around to release)

    Im going to hopefully try and pick one up tomorrow, god knows if will have any joy. Otherwise might have to wait till after xmas! Hmph
     
  7. VWAddict

    VWAddict Member
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    "driver's storage compartment"

    ...I'm intrigued...

    Is this something we don't have on LHD models? -Can anyone post a picture?

    Keith
     
  8. a3_dan

    a3_dan Member

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    It may or may not be called a storage compartment, but its certanly not much of a storage area.

    Its the panel which houses your light controls.

    This pic is from google..

    [​IMG]
     
  9. VWAddict

    VWAddict Member
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    Well... there's a pic of a LHD car with it... but it's not there on mine! -And I've never seen it in ANY US-spec A3.

    -I want... -I WANT!

    Damn... now I have to trawl somewhere like eBay.de looking for that panel! :laugh:

    Keith
     
  10. tcardio

    tcardio Active Member

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    Since we are on the subject...

    E code tailights:

    lights on then I brake and yellows also turn on. Normal or VCDS fix

    lights on then I signal and outer tails activate and yellows activate. normal or VCDS fix
     
  11. VWAddict

    VWAddict Member
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    VAG to the Com.
     
  12. a3_dan

    a3_dan Member

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    Just to let you guys know, and also if anyone was to ever have the same issue and search this thread back up. I just changed the brake light switch and now all ok.

    Thanks for the advice guys!

    Dan
     
  13. mandem13

    mandem13 New Member

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    I had a 2004 1.6 a3 brake lights on all the time with ignition on.with ignition off press the brake pedal lights operate on/off as they should.found a 5amp fuse under bonnet kept blowing f7 i believe.looked up the fuse is for brake pedal position and clutch pedal position/poteniometer.before buying anyparts need to diagnose why this fuse keeps blowing.fuse blowing must be a short somewhere first of all got a wiring diagram of the circut.there is a link wire from fuse too brake switch to clutch switch.so what i did was connect a headlight bulb too the fuse holder which kept blowing(f7)this will simulate a fuse but not blow the headlamp bulb as it can take the load.now simply with ignition on the bulb will be lit dissconnect parts of the circut i started at brake switch dissconnect bulb still lit no problem here.move to the next part of circut clutch switch dissconnected that bulb went out so we can say this is 100%were our fault is.left it dissconnected brake lights opereated correctly.fit new clutch switch and fuse all okay now.
     

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