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Car "settles" onto brakes

Discussion in 'Model S: Driving Dynamics' started by grichard, Aug 30, 2016.

  1. grichard

    grichard Member De-Luxe

    Joined:
    Oct 2, 2015
    Messages:
    204
    Location:
    St. Louis, MO
    I've noticed a subtle but consistent behavior in my MS that puzzles me:

    I see this behavior when I come to a stop while pointed up hill (a traffic light, for example). I bring the car to a complete stop using the brake pedal, and the hill-hold feature engages. I then take my foot off the pedal, and the car remains with the brake on.

    A couple of seconds later, the car will settle back a fraction of an inch, sometimes accompanied by a soft sound from the brakes. The closest analogy that I can think of is putting an ICE into park, then taking my foot off the brake and feeling the car settle onto the parking pawl.

    I speculate--based on nothing--that the hill-hold is switching over to the parking brake calipers and releasing the main calipers. But that's completely a guess. Anybody have a more informed idea?
     
  2. mrElbe

    mrElbe Active Member

    Joined:
    Aug 17, 2014
    Messages:
    1,471
    Location:
    Stouffville, ON Canada
    I have noticed the same behavior, but infrequently.
     
  3. Stiction

    Stiction Member

    Joined:
    Jun 7, 2015
    Messages:
    98
    Location:
    United States
    Never noticed that. But only drive in hilly places rarely.
     

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