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by JeffD
Sat Feb 29, 2020 10:00 am
Forum: Problems / Troubleshooting
Topic: Near Total Electrical Failure
Replies: 14
Views: 2875

Re: Near Total Electrical Failure

Good tip about Pep Boys. I guess I should just plan on a new battery every 3 years.
by JeffD
Fri Feb 28, 2020 10:22 am
Forum: Problems / Troubleshooting
Topic: Near Total Electrical Failure
Replies: 14
Views: 2875

Re: Near Total Electrical Failure

Yes, the battery must be registered with the car's ECU, which monitors and regulates current and charging. I don't have the equipment for that, but for the price the dealer is charging, I could buy a tool, like a Foxwell scanner, and still come out better. I understand that the 12V battery is needed...
by JeffD
Wed Feb 26, 2020 5:36 pm
Forum: Problems / Troubleshooting
Topic: Near Total Electrical Failure
Replies: 14
Views: 2875

Re: Near Total Electrical Failure

Thanks, a 12V system failure does sound like that would result in the behavior I see. I actually am still under BMW Roadside Assist and warranty, so I was able to get it towed to the dealership and they are on it now. I'm assured that everything, except for a possible diagnostic charge, will be cove...
by JeffD
Wed Feb 26, 2020 7:18 am
Forum: Problems / Troubleshooting
Topic: Near Total Electrical Failure
Replies: 14
Views: 2875

Near Total Electrical Failure

Yesterday afternoon I noticed the Check Engine light come on when I started on a short trip of about 4 miles. There was about 18 miles of range remaining on the battery and about 65 miles on the Rex, and the Rex hasn't activated since the last maintenance run about two weeks ago, and didn't activate...

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