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by nickfank
Wed Nov 24, 2021 9:04 am
Forum: Batteries and Charging
Topic: Can a bad auxiliary (12v) battery prevent EV system charging?
Replies: 5
Views: 498

Re: Can a bad auxiliary (12v) battery prevent EV system charging?

OK, just got an update from the dealership... Replacing the 12V battery didn't solve the problem. Because I had the problem *before* the firmware was updated, I can't guarantee that this couldn't be a source of problems for anyone with current firmware. I've had the car since 2018, and didn't update...
by nickfank
Wed Nov 24, 2021 6:33 am
Forum: Batteries and Charging
Topic: Can a bad auxiliary (12v) battery prevent EV system charging?
Replies: 5
Views: 498

Re: Can a bad auxiliary (12v) battery prevent EV system charging?

Thanks for that additional info, especially the note about the firmware update! That may explain why people have not run into this frequently in the past. I'll definitely report back on how this plays out so we have a searchable topic in the forum for those who run into this in the future. When I to...
by nickfank
Tue Nov 23, 2021 11:34 am
Forum: Batteries and Charging
Topic: Can a bad auxiliary (12v) battery prevent EV system charging?
Replies: 5
Views: 498

Can a bad auxiliary (12v) battery prevent EV system charging?

I've got a 2016 with about 50K miles. It suddenly stopped charging. When I plug in the charger, the blue dashboard lights flash for a few minutes & then go off. I had it towed to the dealer and their diagnosis is that the 12V battery needs replacing. That's reasonably inexpensive, and at 5 years...

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