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back noise when switching to PARK?

Discussion in 'Model X: Battery & Charging' started by echin, Sep 20, 2016.

  1. echin

    echin Member

    Joined:
    Jul 31, 2016
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    Location:
    Los Angeles, CA
    i just got my model X a few weeks ago.. i just noticed a noise when shifting from PARK to reverse/drive, and vice versa (going from reverse or drive, to PARK).. the sound comes from the back (battery?)... is this normal? thanks.
     
  2. thimel

    thimel Member

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    Feb 27, 2015
    Messages:
    270
    Putting in park applies the parking brake. That makes a slight noise.
     
  3. echin

    echin Member

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    Jul 31, 2016
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    Location:
    Los Angeles, CA
    thanks, that's helpful and reassuring!!
     
  4. Rocky_H

    Rocky_H Member

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    Location:
    Boise, ID
    Kind of sounds like a short whirring burst of an electric drill, right? Since Teslas do not really have different gears of a transmission, they do not lock in a transmission gear when they do "Park". What is actually happening is that there is a second set of brake rotors on the rear wheels that do the function of the parking brake or "Park" on the gear shift lever. The way those are activated is with a little screw-drive that presses them up against the brake rotors so that they can stay there holding the wheels without having to continuously apply energy to hold them in place.

    So yeah, you will hear a little drill-like noise every time you shift in or out of Park.
     
  5. echin

    echin Member

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    Location:
    Los Angeles, CA
    yeah! drill like in the back. just want to make sure it's normal. thanks for the reply and reassurance!
     

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