TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Curious.... what motor/pump starts when charge cord plugged in?

Discussion in 'Model S: Battery & Charging' started by Raven, Feb 25, 2013.

  1. Raven

    Raven Member

    Joined:
    Oct 9, 2012
    Messages:
    258
    Location:
    US
    I'm just curious what's making the noise. It's not loud or concerning by any means. When I plug in the charge cord, a motor in the frunk area starts up, usual a higher pitch at first and then slowly winds down to a low, continuous hum for the remainder of charge. Anyone know?
     
  2. Todd Burch

    Todd Burch Electron Pilot

    Joined:
    Nov 3, 2009
    Messages:
    4,734
    Location:
    Smithfield, VA
    Pretty sure it's the compressor for the heat pump...to maintain battery temp while charging.
     
  3. Raven

    Raven Member

    Joined:
    Oct 9, 2012
    Messages:
    258
    Location:
    US
    Makes sense. It's cold out.
     
  4. Todd Burch

    Todd Burch Electron Pilot

    Joined:
    Nov 3, 2009
    Messages:
    4,734
    Location:
    Smithfield, VA
    It could also be a pump to circulate the coolant...or both. Would love a user manual that explains all these noises...
     

Share This Page