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How to Replace the BMW 3 Series Key Fob Battery

Model: BMW Serie 3 E91, E90, E92 - Years 2005-2013
Part: Key

In a few simple steps, we will see the instructions that will allow you to disassemble and replace the battery of the BMW 3 Series key fob. First, take your key fob and start by extracting the key from inside the fob; then pry on the side slot to open the fob into two parts, accessing the circuit board and the battery, as shown in the video. At this point, remove the battery and replace it with a new one of the correct type and with the same designation; insert it in the correct orientation and reassemble the key fob.

Posted on 20 March 2026 by ScegliAuto

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