Hi! I’ve been having an issue where when I’m driving, suddenly my 2007 Prius will beep and say “problem” and display the red triangle, the check engine light, the VSC light, the ABS light, and several others. It will let me continue driving until I can park and turn it off. When I restart, the lights are still there but the car can not drive or go into reverse. I got it towed once, and they replaced the non-hybrid battery. It ran normally for a bit. The second time it happened, Toyota said no codes came up and gave it back. It happened again, and Toyota is trying to tell me that it’s the hybrid battery and has quoted me $3600 in replacement. I’ve done my homework and believe this is the inverter pump. They insist nothing is wrong but I don’t understand why a battery failure would act this way. Does anyone have any advice or insight? I’m convinced it’s the inverter and not the battery. Thanks.
If you open the inverter reservoir cap while the car is READY, you should see turbulence in the fluid. If there is no movement in the fluid, then the pump has failed.
The car is at the Toyota dealership currently, so I can’t check. I’m not sure whether or not to keep it there or get it towed elsewhere since I don’t trust them. Does it make sense that this would be a HV battery issue?
You took it to the Toyota dealer and they said no codes came up? Were the problem lights on when you took the car there, or had you disconnected the 12v battery to start the car and then drove there?
I had to get it towed there since it wouldn’t go into drive. They said no codes came up and gave it back to me but it failed again yesterday and when they ran it again, they told me the hv battery was bad. I just don’t believe them since they’ve given me no reason to trust them.
Did they do a diagnostic? If they did, and you paid for it, then they are obligated to give you a copy of the diagnostic report. That should have all trouble codes documented. Post a photo of it for us. Sounds more like an HV isolation issue, which can occur in the battery if a module is leaking. If you disconnect the 12v battery for a minute or two and then hook it back up, will the car let you drive again?
