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      08-07-2012, 01:36 PM   #13
Drives: 2008 E92 335i
Join Date: Sep 2011
Location: United States

Posts: 52
iTrader: (1)

Originally Posted by Glim View Post
Yes, the CA battery is a CR2032, same battery you would use in a desktop PC motherboard.

You pop the key out the back of your fob and use a dime and twist in the thin slot below the key hole, it pops a small cover off the bottom/back of the fob, that is your CA battery.

The battery does not charge when the fob is in the dash.

Positive plus sign faces towards you when inserting the new battery.
Hate to bump such an old thread, but thanks to you, I was able to resuscitate my dead, 2nd keyfob.
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