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VSC ABS (!) lights on after replacing inverter coolant pump

Discussion in 'Gen 2 Prius Main Forum' started by marhuu, Oct 17, 2024 at 9:10 PM.

  1. marhuu

    marhuu Junior Member

    Joined:
    Dec 4, 2022
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    Location:
    Chicago, IL, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    So here is the story. Red triangle, engine lights with a bunch of orange lights eg VSC abs. Scanned code P0a93 indicating inverter coolant pump problem. Replaced the pump, drained all coolant and added new. Bleeding system until solid coolant came out of the bleeding valve.
    Started the car fine with all warning lights off. However after driving for 1 min, VSC ABS and (!) lights on. Every time when starting the car, all warning lights off but came back on after short drive.
    Suspect the 12v battery problem, so replaced it. However those three lights still came back on after short driving. Btw the red brake light is always off.
    Scanned no code found.
    any ideas?
     
    #1 marhuu, Oct 17, 2024 at 9:10 PM
  2. bisco

    bisco cookie crumbler

    Joined:
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    Plug-in Base
    what scanner? it may be inadequate
     
    #2 bisco, Oct 17, 2024 at 9:18 PM
  3. Brian1954

    Brian1954 Senior Member

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    Jan 31, 2021
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    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    If you have the warning lights on and then scanned and found no trouble codes, it means that the scan tool that you are using is not good enough to scan all the dozen or more different systems in your Prius. You need a better scan tool. Read this thread:
    https://priuschat.com/index.php?posts/3246758
     
    #3 Brian1954, Oct 17, 2024 at 9:22 PM
  4. ChapmanF

    ChapmanF Senior Member

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    IV
    #4 ChapmanF, Oct 17, 2024 at 9:43 PM
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