How to change the key's battery.
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2004 BMW 745Li Question: key battery
Answer #1Chow June 07, 2010, 02:41Master
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 #2buey July 31, 2010, 10:16Rookie
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 #3Visitor, January 05, 2011, 13:19
I need your visa card number