2012 Prius C won't start after changing 12v

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Mohd. Rashedul Haque, Aug 30, 2019.

  1. Mohd. Rashedul Haque

    Mohd. Rashedul Haque Junior Member

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    Recently I have changed 12v battery of my Prius C 2012 after having problem. But unfortunately, car won't start. I have main battery problem also. Now dashboard shows lot of indicators as attached pic. Please suggest what to do.
     

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  2. jerrymildred

    jerrymildred Senior Member

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    I suggest you get the codes read by a code reader that can check the proprietary Prius hybrid codes.

    Did you jump start it before replacing the 12V battery? If so, are you absolutely 100% sure you did not reverse the polarity on the jumper cables? If you got them backwards, you might have blown some fuses. Or you might have destroyed some very expensive stuff.

    Check the fuses and then read the codes.
     
  3. PriusCamper

    PriusCamper Senior Member

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    We get a least one of these a month on Prius Chat... It's almost always because the person bought an Optima Yellow top battery, which isn't really a battery it's a scam sold by a company run buy criminals who re-sells batteries returned as defective because they think recharging defective batteries is all it takes to fix them.

    YellowTop_Criminals.png
     
  4. iceman13

    iceman13 Member

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    I recommend getting a cheap multimeter and bringing it with you when buying a new battery. It happened to me about a month ago that I bought a new battery from Pep Boys and it was reading 12.1v which is unacceptable for a new battery. The second one they gave me read 12.75v which was perfect.
     
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  5. Mohd. Rashedul Haque

    Mohd. Rashedul Haque Junior Member

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    Update: I have forgotten to push the "ring" of Orange high votage disconnector.
    Update: I have forgotten to push the ring of Orange safety plug! After doing that all looks ok and my car is LIVE again! Thanks to all of you.
     
  6. jerrymildred

    jerrymildred Senior Member

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    We never would have guessed that as the reason. But glad you're back on the road again. :D Not seating the high voltage safety disconnect is a common oversight when working on the HV system. Pretty rare when replacing the 12V since there's no more reason to pull that orange disconnect than to unplug your refrigerator when working on the 12V battery.
     
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