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Thread: Brake wear light

  1. #1
    Join Date
    Oct 2017
    Location
    Bartlesville Oklahoma
    Posts
    14
    My Cars
    1998 e36 1982 e21

    Brake wear light

    On my 1982 e21 I get an intermittent brake wear light that will come on and stay on. Then the next time I drive the car it will come on again after driving for a while. I replaced the wear sensor but still get the same results. Any help I would appreciate it. Thanks

  2. #2
    Join Date
    Feb 2016
    Location
    Sacramento, CA
    Posts
    1,077
    My Cars
    1979 E21 320i
    Check to see if you have a sticky brake fluid level sensor, or borderline low fluid?
    -John

  3. #3
    Join Date
    Oct 2017
    Location
    Bartlesville Oklahoma
    Posts
    14
    My Cars
    1998 e36 1982 e21
    Thanks John I will check this out when I get home.

  4. #4
    Join Date
    Nov 2007
    Location
    Sacramento, California
    Posts
    4,713
    My Cars
    1980 BMW 320i E21 M10B18

    Cool

    The E-brake switch can do the same thing and is connected to the brake light like the fluid cap switch-Either can flicker the brake indicator light. The Brake Pad Wear Sensor Light is not connected to the brake light its connected to the circle of pie pieces or White Hash Marks-Red Plastic with White Light bulb in back of instrument cluster,,this system runs on a negative feed back loop and this is how its turned off. Once the key is on and all the indicator lights come on, the car starts and the brake pad wear sensor light goes off, like the alternator light. Check for wire break by continuity test.

    Your All Welcome

    Randy
    Last edited by 320iAman; 12-13-2017 at 09:55 PM.

  5. #5
    Join Date
    Mar 2013
    Location
    Santa Rosa, CA
    Posts
    1,631
    My Cars
    1981 320i silver
    e21 Wiring.JPGClick on the picture to enlarge, open in a new window/tab and enlarge.
    Last edited by okieflats; 12-13-2017 at 11:29 PM.

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