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Thread: Parking / Emergency / Hand Brake Light On

  1. 10-31-2023, 03:11 PM #1
    GreenTea
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    Parking / Emergency / Hand Brake Light On

    Hi All:

    I am chasing a new (and oh-so-fun) issue on my 1971 911T. The parking brake light on the combo gauge is illuminated.

    The light is constant on (not flashing) and has gone out a few times while driving on the freeway . . . only to come back on a turn (without braking).

    Just the facts, ma'am:

    • The brake fluid tank is 80% full.
    • The master cylinder is relatively new.
    • The gauges were recently refreshed.
    • Wiggling and pressing down on the parking brake handle does not impact the light.
    • Parking brake handle is fully released.
    • Wiggling the wire underneath the parking brake mechanism does not impact the light.
    • Brakes function as normal.
    • Everything was fine until one day I parked, shut the engine off, came back, fired her up, released the parking brake and the light didn't go out.


    Any thoughts on where I should start my hunt? Thanks in advance!
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  2. 10-31-2023, 11:33 PM #2
    72targa
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    Moved to Technical. Will be watching this thread with interest.
    Peter Kane

    '72 911S Targa
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  3. 11-02-2023, 02:55 AM #3
    HarryD
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    Unplug the electrical connector from the master cylinder to determine if the MC switch has gone bad.
    Harry

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  4. 11-02-2023, 09:45 AM #4
    sweetE
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    You might want to check your battery.
    Dale Thero S Registry # 200
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  5. 11-05-2023, 02:30 PM #5
    GreenTea
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    Quote Originally Posted by HarryD View Post
    Unplug the electrical connector from the master cylinder to determine if the MC switch has gone bad.
    Thanks, Harry. Because I have a euro car, I don’t believe I have a wire that plugs up to the MC.

    In an event, no wires are connected to the MC (and no wires are readily available in or around the MC).

    Without a wire connected to the MC, the gauge light is on. Figure this suggests that my issue is with the switch under the e-brake lever in the center console.
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  6. 11-05-2023, 02:31 PM #6
    GreenTea
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    This one has been solved. The wire coming off the e-brake switch got crimped under the new Recaro I recently installed. DOH.

    It's always the easy ones, right?! . . . Thanks for your help, everyone. I really appreciate it.
    Last edited by GreenTea; 11-07-2023 at 03:42 PM.
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