key battery on 2004 BMW 745Li

How to change the key's battery.

by in Murrieta, CA on June 06, 2010
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3 answers
ANSWER by , June 07, 2010
If your car is fitted with comfort access you can simply pop the small cutout cover on the back and replace the little round battery, forget the battery part number sorry
ANSWER by , July 31, 2010
just open it up an change it, or bring it to the dealer and they can charge you about 2000.00 dollars to do it.
ANSWER by , January 05, 2011
I need your visa card number