warning lights at altitude

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by jsb95003, Feb 22, 2006.

  1. jsb95003

    jsb95003 New Member

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    Has anyone had the Hybrid system warning lights come on at altitude?
    I can drive my '02 fine into the mountains, but restarting later causes the three warning/caution lights - freaked me out. Local dealer suggested it was altitude.
    Local dealer said it was altitude, and I have had some success opening the fill caps and letting things equilibrate. Does anyone know if I am damaging the car? Any tips on avoiding the problem?
    BTW, it kicked butt with chains on icy roads.
    Cheers, Jay
     
    #1 jsb95003, Feb 22, 2006
  2. 2Hybrids

    2Hybrids New Member

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    did you lose compression in the cabin?.... :lol:

    seriously though, I've heard of this before - and happens due to the change in atmospheric pressure (???). My old Cadillac had a similar issue in Colorado.
     
    #2 2Hybrids, Feb 22, 2006
  3. naterprius

    naterprius Senior Member

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    My 2004 has been to 13,000 feet with no issues.

    Nate
     
    #3 naterprius, Feb 22, 2006
  4. 2Hybrids

    2Hybrids New Member

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    jsb...do you happen to know how high you were?
     
    #4 2Hybrids, Feb 22, 2006
  5. tochatihu

    tochatihu Senior Member

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    Has the engine control module been replaced under technical service bulletin EG011-03? My guess is 'not'. Ordinarily this is the cure.
     
    #5 tochatihu, Feb 22, 2006
  6. hyo silver

    hyo silver Awaaaaay

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    Maybe we should consult Schmika on this one. He might have some kind of blood test for that. :p
     
    #6 hyo silver, Feb 22, 2006
  7. Canuck

    Canuck Member

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    Probably has a GPS like Garmin 2620 which shows altitude.
     
    #7 Canuck, Feb 22, 2006
  8. Hallowday

    Hallowday New Member

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    :lol:
     
    #8 Hallowday, Feb 22, 2006
  9. galaxee

    galaxee mostly benevolent

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    these cars are sensitive to altitude. they have to run at altitude for a while so the ECM learns the new air mixture.
     
    #9 galaxee, Feb 27, 2006
  10. jsb95003

    jsb95003 New Member

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    about 7500'
     
    #10 jsb95003, Mar 10, 2006
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