Door adjar light and master caution light

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Johnbwg00082v, Jun 29, 2019.

  1. Johnbwg00082v

    Johnbwg00082v New Member

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    Location:
    Bend, Oregon
    Vehicle:
    2009 Prius
    Model:
    Four Touring
    09 Prius Touring door ajar light on with master caution on. Unplugged all 5 door switches (no change) plugged them back in one a time and no change. Ran OBD, no DTCs stored???? What?
     
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Use an ohmmeter to measure resistance across each switch when open and closed. Look for a switch that behaves differently than the others.
     
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  3. TMR-JWAP

    TMR-JWAP Senior Member

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  4. landspeed

    landspeed Active Member

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    You have probably already found this, but, the master warning light / red triangle of death comes on when the car is in drive and the driver's door (probably others too) is ajar. So, that may well be why there are no codes. It was scary the first time that happened till I realised why!
     
  5. TMR-JWAP

    TMR-JWAP Senior Member

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    This gave me heart failure the first time also.....:)
     
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