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Click sound when car unlocks/turns on?

Discussion in 'Model 3' started by RyanDe, Jun 25, 2018.

  1. RyanDe

    RyanDe Member

    Joined:
    Aug 24, 2016
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    Location:
    Massachusetts
    kind of loud click, like something is unlocking or clicking into gear. Is this normal?
     
  2. North75

    North75 Member

    Joined:
    Mar 28, 2017
    Messages:
    286
    Location:
    MA
    I always assumed that noise is the high voltage contactor closing. Perhaps others can confirm.
     
  3. Vintre

    Vintre Member

    Joined:
    Jun 13, 2018
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    Location:
    Waterdown
    I have the same noise. It's pretty loud.

    Vin
     
  4. swaltner

    swaltner Member

    Joined:
    Oct 13, 2012
    Messages:
    995
    Location:
    Kansas, USA
    Yep, when you open the door, one of the first things that happens is closing the high voltage contactor to get high voltage outside of the main battery. This is first required to drive the HVAC system. The HVAC is run off the high voltage battery, not the little 12v battery.

    And yes, totally normal. All EVs make a similar noise at some point during their power-up sequence.
     
    • Informative x 1
  5. chronopc

    chronopc Active Member

    Joined:
    Jul 8, 2017
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    1,697
    Location:
    California
    The noise that it makes when the car shuts down with the HVAC system on is really loud.
     
    • Like x 1

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