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How does the parking brake operate?

Discussion in 'Model 3' started by timk225, Aug 16, 2018.

  1. timk225

    timk225 Active Member

    Joined:
    Mar 24, 2016
    Messages:
    1,041
    Location:
    Pittsburgh
    When I press the Park button, I hear something whir into place and stop.

    What is happening, and where? I know it's the parking brake. Does it clamp on the rear disc brakes somewhere, or does a piece rotate into position and lock the motor itself, or something else?
     
  2. TT97

    TT97 Member

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    Location:
    Los Angeles
    • Helpful x 1
  3. gilscales

    gilscales Member

    Joined:
    Jul 16, 2016
    Messages:
    297
    Location:
    Long Beach, CA
    did a quick google search and came up with this


    "Parking brake Electrically actuated parking brake integrated into rear caliper"

    Base on the teardown videos we've seen, this statement makes more sense than the other statement from the manual that Kathy quoted, which sort of gave the impression the parking brake was a separate mechanism. It seems with the Model 3 that Tesla has been able to eliminate the extra caliper used for parking, and instead simply locks the wheels with the same calipers used for braking. More parts and cost reduction!
     
  4. SigNC

    SigNC Member

    Joined:
    Aug 23, 2017
    Messages:
    382
    Location:
    Raleigh, NC
    same thing happens on a VW/Audi
     

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