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Power Windows & Audio Not working after 12v battery drain

Discussion in 'Gen 3 Prius Main Forum' started by superdan54, Mar 6, 2022.

  1. superdan54

    superdan54 Junior Member

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    So back in November my catalytic converter was stolen from my 2010 Prius right in my driveway in a well lit neighborhood (that's another story) :mad:

    Anyway, the car sat in the shop for 2 months while a backordered replacement could get in. By the time I got it back the 12V was completely dead. I was able to salvage it and it holds charge now just fine. However a few items no longer work. Most notably, 2 out of the 4 power windows on the master controller no longer work. The individual ones by each door work but half of the driver's controls don't. Do I just need to replace the unit or could there be something else?

    Also, most importantly my audio doesn't work at all. I have one of the JBL systems with an amplifier. I'm guessing the problem is that it just won't turn on. How can I diagnose it without just ordering a replacement to see if that's the problem. I don't want to put any more $$ than I already have :(.
     
  2. RRxing

    RRxing Senior Member

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    What is the voltage reading? "Holding a charge" is meaningless if the voltage is low.
     
  3. superdan54

    superdan54 Junior Member

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    12.5V idle
    14.69V with engine running
     
  4. bisco

    bisco cookie crumbler

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    everything else works and the car drives fine?
     
  5. superdan54

    superdan54 Junior Member

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    Yes, as far as I can tell. No check engine lights or anything like that.
     
  6. bisco

    bisco cookie crumbler

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    sounds like something odd happened in the garage. check all the fuses to begin with
     
  7. superdan54

    superdan54 Junior Member

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    The amp fuse looked fine. I'll check the power window one here in a few but it wouldn't make sense for half of them to work if a fuse was blown
     
  8. bisco

    bisco cookie crumbler

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    i know, it is very odd. maybe rats chewed on some wiring. can you take the amp out of the circuit and see what happens?
    i just can't think of a relationship between the audio and the windows
     
  9. superdan54

    superdan54 Junior Member

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    I replaced the amp but it's still not working. I checked and I'm getting 12v power to the amp so I really have no idea what the problem could be.
     
  10. bisco

    bisco cookie crumbler

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    it has to be after the amp back to the dash behind the head unit?
     
  11. tony_2018

    tony_2018 Member

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    do the switches work on the doors?
     
  12. superdan54

    superdan54 Junior Member

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    Weirdly enough one of the switches started working again. However still 1 out of the 4 still doesn't work. I'm at a loss. Seems like an electrical problem that's way over my ability.
     
  13. bisco

    bisco cookie crumbler

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    i think you're right. something is grounding or chewed or loose