135 in a coma after a "cold" windy night. Woke up this afternoon?

[avosough]

Leaving work on Friday my 135 failed to turn on on the first press but fired up just fine the second try. This was maybe the second time that's happened. I parked the car on the street on Friday at home. On Sunday I got something out of the center console and locked back up. This morning after a cold night (for Atlanta) with temperatures around 23F (-5C) and strong headwinds on the car, it was absolutely dead. The remote wouldn't unlock the car. After I finally got in with the key cylinder, lights wouldn't turn on, and it didn't even try to crank. I did notice the backlighting for the headlight switch seemed to be on; nothing else.

Drove my second car to work and back. After getting sun all day and warming up to nearly 40F (4C), she unlocked and turned on without skipping a beat?! Clock was just slow by 10 minutes... What gives?? Should I be concerned? I understand a long crank at lower temperatures, but it acted like the battery was completely disconnected...


Edit: I should mention I replaced the original factory battery with a BMW replacement in July of 2015 as a precaution.

[Yeineken]

Did you code that new battery? Could be your problem.

[avosough]

Bought the battery from a BMW dealership and took it to an indy shop for install and coding. Though I can't be positive they did anything more than just drop it in...

[ShocknAwe]

Take it back to the shop that replaced the battery. Too coincidental.

[avosough]

Battery was replaced 5,000 miles and 6 months ago with no other issues in the interim.

This morning was nearly as cold, but I parked in the shade of the house rather than on the street in the wind. Car fired up like any normal day...

[Mr Rooty Von Tooty]

These are the typical symptom of a dead battery, and one which needs replacement.

Here's some replacements:

http://www.autozone.com/batteries-st...win-turbo-dohc