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Discussion Starter · #1 ·
So my hybrid battery died a few months ago but the car kept running, I did some researched and even asked on here and came to the conclusion that the alternator would still function even with the dead battery so I kept driving for a few months and 8000 or so miles.
Now all of a sudden the alternator seems to have stopped working and the car does not run unless I attach a jumper pack to the battery and leave it attached. My question is, does anyone know if I get a new hybrid ima battery pack will it fix this ? Or is there probably something wrong with the alternator system that will still be an issue? Is the alternator system in the battery pack? Anyone have experience with this ? Thank you in advance !
 

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Your car does not have an alternator.

Instead, it has what's called a DC-DC converter. It takes high voltage DC from the car's hybrid system and uses it run the car and charge the 12 volt battery. What has happened it that your IMA system has degraded to the point where the DC-DC converter is no longer able to operate.

If you were to replace your IMA battery with a new one, that would almost certainly fix the problem.
 

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Discussion Starter · #3 ·
Your car does not have an alternator.

Instead, it has what's called a DC-DC converter. It takes high voltage DC from the car's hybrid system and uses it run the car and charge the 12 volt battery. What has happened it that your IMA system has degraded to the point where the DC-DC converter is no longer able to operate.

If you were to replace your IMA battery with a new one, that would almost certainly fix the problem.
Ok I see ya I suspected that maybe the battery needed to still be able to hold some Juice for it to charge the battery. Thank you so much for clearing that up it’s very hard to find info on these systems much appreciated ! Come to New Orleans and I’ll buy a beer or 5!
 

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Discussion Starter · #4 ·
Ok so I changed the battery and unfortunately it didn’t work, the 12 volt still doesn’t charge, the 12 volt is in good shape and holds a charge as I’ve been charging it manually with a charger at home, I recently changed the positive terminal lead on the 12 volt as it had become warped and no longer gripped the terminal, this involved cutting it off and striping back the wires before screwing them
Into the new lead. The car worked for a few months and a cross country drive after that but I can’t help but think it might be something gone wrong there, do you know what those 3 wires that connect to the positive lead each do? Is one of them the designated wire from the dc dc converter which I could try to change ? Thanks !
 
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