Where is the brake light relay?

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  • BENdashdash
    Tom is not my friend
    • Aug 2004
    • 2506

    #1

    Where is the brake light relay?

    The brake light warning has been lighting up my check panel ever since I got the car. I've tried replacing the panel. Right now, my complete interior is out and I'd like to locate the break light relay to try and fix this issue. Where is it? I hear its in the back but I have yet to find it. I have a cabrio but any input would be helpful. Thanks.
  • AdamF 88iS
    R3VLimited
    • Oct 2003
    • 2051

    #2
    It's in the trunk, up in front of the antenna motor; but I'd put a new brake light swtich on the pedal before I messed with it.
    Adam Fogg- '88 M3

    Common sense- It's the new 'gifted'

    Comment

    • BENdashdash
      Tom is not my friend
      • Aug 2004
      • 2506

      #3
      My brake lights work though

      Comment

      • AdamF 88iS
        R3VLimited
        • Oct 2003
        • 2051

        #4
        Originally posted by BENdashdash
        My brake lights work though
        Yea, I know. Put a new swtich in.
        Adam Fogg- '88 M3

        Common sense- It's the new 'gifted'

        Comment

        • BENdashdash
          Tom is not my friend
          • Aug 2004
          • 2506

          #5
          Thanks, I'll try that. But what is your reasoning for the switch? Corrosion?

          Comment

          • m42technic
            E30 Enthusiast
            • Oct 2003
            • 1056

            #6
            Ive had brake switches switches crap out on me on both of my cars, I have to agree with Adam.
            James Peacock

            WWFSMD?

            Comment

            • AdamF 88iS
              R3VLimited
              • Oct 2003
              • 2051

              #7
              Originally posted by BENdashdash
              Thanks, I'll try that. But what is your reasoning for the switch? Corrosion?
              They just go bad internally, bad soldering or something. They updated the design now though.
              Adam Fogg- '88 M3

              Common sense- It's the new 'gifted'

              Comment

              • BENdashdash
                Tom is not my friend
                • Aug 2004
                • 2506

                #8
                Whelp, I replaced the switch yesterday. The check panel light still won't go away. Ideas?

                Comment

                • AdamF 88iS
                  R3VLimited
                  • Oct 2003
                  • 2051

                  #9
                  Do any of the brake light bulbs have brass bases?

                  Are all of your grounds good? Clean connections?

                  The relay box is in the trunk on the left side, in front of where the power antenna is if you want to swap with a different one.

                  And you do know that the brake light warning always comes up every time you start the car and should clear itself after you press the pedal?
                  Adam Fogg- '88 M3

                  Common sense- It's the new 'gifted'

                  Comment

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