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Thread: Brake wear waring

  1. #1
    Join Date
    Jul 2010
    Location
    KC, Mo
    Posts
    5,045
    My Cars
    04 M3, 02 E39, 01 46 M3T

    Brake wear waring

    The car is an 02 E39 Touring. The "Check Brake Wear" (or whatever it is) warning is showing in the cluster. Also, the red "BRAKE" light is on. It was intermittent, but now on all the time. Just checked both sensors and neither is touching the rotors.

    Thoughts? Going to order new sensors to troubleshoot through substitution. Is there another common cause for this. I have NEVER seen this in 15 years of 3 Series repairs and service.

  2. #2
    Join Date
    Sep 2006
    Location
    NW suburban Chicago
    Posts
    15,676
    My Cars
    hiss by my window
    check for corrosion in the connectors. The pins are very small and sometimes dissolve

    If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower. - Mark Donohue

  3. #3
    Join Date
    Oct 2017
    Location
    Beaverton, Oregon, USA
    Posts
    1,645
    My Cars
    2001 E39 540i A, 207 k
    Get rid of those sensors : splice the wires at the connector and tie them together, to close the circuit and never see again that "check brake wear" message.
    You can always check the brake pads thickness visually, without even removing the tires....

  4. #4
    Join Date
    Aug 2016
    Location
    Virginia,USA
    Posts
    2,953
    My Cars
    528i, 525iT, M5, x5 4.8
    Brakes who needs 'em?
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