AC evap cleaning gone wrong!!

Discussion in 'Prime Technical Discussion' started by Jingbobby, May 31, 2025.

  1. Jingbobby

    Jingbobby Junior Member

    Joined:
    Mar 28, 2019
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    Vehicle:
    2018 Prius Prime
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    Prime Premium
    Hey guys - after a DIY ac evap foam cleaning, I’m getting a “hybrid system malfunction” light… the cruise control, 3 button at bottom - drive mode, ev/hybrid, ev auto will not work when I’m driving. However, right when I start the car, the buttons actually work for a split second before the “HSM” light come on..

    Also the airbag light is constantly on as well.. I tried disconnecting the 12v battery. Any one dealt with this before? Any help is appreciated!
     
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    boston
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    2012 Prius Plug-in
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    Plug-in Base
    what is the procedure? what product?