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Brakes sticks

Discussion in 'Model S: Driving Dynamics' started by towman26, Aug 23, 2013.

  1. towman26

    towman26 Member

    Joined:
    Jul 5, 2013
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    Location:
    Palm City FL
    So we don't use the brakes that much but I'm having a issue. Every time when we go to leave the house when I put it in reverse the car makes a loud clunking noise. After the first initial moving of the car it doesn't happen again until the next day or two. The rotors have a light surface rusting (more like a film of tan dust) in the brake area of the rotor but the rest of the rotor is rusting pretty good. It is way worse if I wash the car in the evening and don't drive it for a day or two. Unfortunately I don't get to drive it all the time so if it sits for two or more days I really have to put the pedal down for it to move. Anybody have this going on
     
  2. Jason S

    Jason S Model S Sig Perf (P85)

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    Rocklin, CA
    Sounds like your parking brakes aren't disengaging correctly.

    I'd have it inspected at a local shop.
     
  3. highfalutintodd

    Joined:
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    Location:
    Hendersonville, Tennessee, United States
    It's happened to me a couple of times, when it's been driven in the rain and put away wet to sit there overnight.

    IIRC, speculation on other threads is that the parking brake rusts to the rotor in those types of situations and then they have to "break free" which causes that clunking sound.
     
  4. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

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    7,019
    Yes, that's the reason. When put away wet, your brakes will stick to the rotor. It's normal for them to break loose like that. Happens to a lot of cars that use bigger brakes.
     
  5. Doug_G

    Doug_G Lead Moderator

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    Ottawa, Canada
    It's normal. Happens occasionally with my Model S. Happened once in a while with my former Infiniti G37. Happens often with my Roadster.
     
  6. Botbldr45

    Botbldr45 Member

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    Sedona, Az
    Happens a lot with my roadster
     
  7. djp

    djp Roadster 2.0 VIN939

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    Toronto, Canada
    Whenever I wash the car I take it around the block afterwards and do a few hard stops to dry the brakes, and I don't set the parking brake. Completely solves the sticking problem.
     
  8. Longhorn92

    Longhorn92 MS VIN #10103 (40 kWh)

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    Chicago
    I agree with everyone here: it's likely due to wet conditions. Have you been out in the rain quite a bit, or do you wash your car frequently (or a combination of both)?
     
  9. gaswalla

    gaswalla P4201/85/airsusp/pano/19i

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    Happens every time I wash the car, but don't move it til the morning.
     
  10. towman26

    towman26 Member

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    Jul 5, 2013
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    Location:
    Palm City FL
    Thanks for the info, I was sure it had to do with the water My parking brake applies every time it is in park so I guess its something I have to deal with. I know im going to paint the stud area of the rotor to stop that rust look
     

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