1. Attachments are working again! Check out this thread for more details and to report any other bugs.

AC Runs COLD if ICE Isn't On

Discussion in 'Gen 2 Prius Technical Discussion' started by PeterPrius, Feb 15, 2012.

  1. PeterPrius

    PeterPrius Hers is a 2009 Prius, non-SKS

    Joined:
    Jan 5, 2010
    48
    12
    0
    Location:
    Lakewood, Colorado
    Vehicle:
    2005 Prius
    Model:
    N/A
    Sweetheart took her 2009 into fix leaking AC fluid. Instead of running warm (AC on or not) after the cars warms up, it runs cold, even with it set to MAX HOT.

    My 2005 runs nice and warm on cold winter mornings after a 5 minute warm up.

    Hers seems to be connected to the ICE. How do you tell the fine folks at the Stevinson dealership that the AC needs to run HOT or COLD depending on the setting?
     
  2. cnschult

    cnschult Active Member

    Joined:
    Jan 9, 2008
    772
    95
    0
    Location:
    Michigan
    Vehicle:
    2005 Prius
    Model:
    N/A
    sounds like a problem with heating system, not air conditioner.
     
  3. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    10,096
    4,795
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Yeah I can't figure out what the OP is talking about.
     
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,199
    6,464
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    What is "AC fluid"? Are you referring to the air conditioning refrigerant which is a gas at atmospheric pressure; or are you referring to an engine coolant leak?

    The cabin heater obviously is not working. If the initial problem was an engine coolant leak, then it is likely that air remains in the engine coolant system.

    Have your wife tell the dealership service writer that the cabin heater is not producing heat.