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Prius 2008 A/C Blowing Hot Air

Discussion in 'Gen 2 Prius Technical Discussion' started by megaTCS, Nov 19, 2011.

  1. megaTCS

    megaTCS New Member

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    HI Prius a/c start to blow hot air after driving the car for 30 min.

    In the next day when i start the car, it blowing cold air.

    A/C starts to blow warm air if i drive the car more than 30min. look like once the engine heats up its start to blow hot air

    What will be the issue? :confused:


    Only twice i got the VSC and Engine Check light. but it went off after 2 days. i Took it to the auto shop and did a scan, they said its giving lots of code (codes like: C1241, U0073, U0123,U0124, U0126, U0293, U0111) and they have reset the codes. and told if you get warning lights again then they can try.
     
    #1 megaTCS, Nov 19, 2011
  2. uart

    uart Senior Member

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    Sounds like it could be a problem with the inverter coolant loop/pump. Have you had the recall done yet?

    Try to drive it as little as possible until this is fixed!
     
    #2 uart, Nov 19, 2011
  3. seilerts

    seilerts Battery Curmudgeon

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    +1. This explains C1241, which sets due to low 12V battery voltage. When the inverter coolant overheats, the car takes A/C offline, as well as the DC/DC converter. With the car dependent on the 12V battery to power all computers, it will sag quickly and many sensors will give low voltage related errors.
     
    #3 seilerts, Nov 19, 2011
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  4. richard schumacher

    richard schumacher shortbus driver

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    Where are you? Take it to a Toyota dealer immediately. Replacing the inverter coolant pump is a recall item and may be at no cost to you. If the pump is bad it can damage the inverter, which costs a thousand or more to replace.
     
    #4 richard schumacher, Nov 19, 2011
  5. megaTCS

    megaTCS New Member

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    HI thanks for your reply, am in SRILANKA, toyota lanka doesn't provide warranty for hybrid. I imported directly from japan.
     
    #5 megaTCS, Nov 20, 2011
  6. uart

    uart Senior Member

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    Ok then it's almost 100% the inverter coolant pump (aka the "HV" coolant pump). You should get it changed out as soon as possible. It's a pretty easy job if you want to do it yourself. I'm pretty sure some users have written posts explaining how to change it, so if you do a thread search you should find some guides.
     
    #6 uart, Nov 20, 2011
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