I jumped it this morning at -2, started roughly but idled fine. Left it running, wife got in to leave and called me because the instrument cluster was flooded with errors. All were likely caused by low battery voltage so I'm not shocked...


Battery is only two years old, installed at a dealer because I didn't have the registration software stuff and car was fairly new to us. I guess it could be faulty, but alternator could be on it's way, or there's some power draw somewhere. Wife informed me she's been getting high battery drain warnings while sitting in the car on the phone (engine not running).


Fortunately it's supposed to get back up into the 40s this weekend. It's been below zero for like two days straight.

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'08 X5 4.8i - 190k
'15 i3 - 95k - Blown AC compressor

'98 323is - 170k - Garaged
'94 325i - 208k - Sold