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

Normal for coolant tank to be boiling?

Discussion in 'Roadster' started by MileHighMotoring, Oct 18, 2015.

  1. MileHighMotoring

    Joined:
    May 27, 2015
    Messages:
    790
    Location:
    Parker, CO
    Sorry to be posting so much - I am trying to search for everything before starting a new thread! Couldn't find the answer to this one. The car hasn't been driven in 24 hours, is at 100 miles of range, and in a cool garage. I pop the trunk and the coolant is bubbling or boiling. Is that a concern? I've noticed it every time I open the trunk, whether I've used the car or not.
     
  2. Doug_G

    Doug_G Lead Moderator

    Joined:
    Apr 2, 2010
    Messages:
    15,852
    Location:
    Ottawa, Canada
    Surely not. It circulates with a pump when the car is warm. If the coolant was actually boiling then your battery would not work
     
  3. Curt

    Curt Roadster Signature #55

    Joined:
    May 13, 2013
    Messages:
    310
    This is perfectly normal.

    The coolant pump will run (touch the reservoir and you will know it is not boiling, just circulating) for about five minutes every time the car wakes up. Opening a door, or the trunk, or even simply unlocking (among others) will wake the car.

    If the battery temp is above 31 degrees Celsius, the pump will run continuously until the temperature is reduced.

    Since you have yours in a cool garage, expect to hear the pump running any time you do anything with the car, and to stop in about five minutes.
     
  4. Stefan T

    Stefan T Member

    Joined:
    Jan 31, 2015
    Messages:
    164
    Location:
    Sweden
    and if you have anny air in the system it would louder
     

Share This Page