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How to Replace the Battery in a BMW Key Fob

Model: BMW i3 MK 1 - Years 2013-2022
Part: Key

To replace the battery in a BMW key fob, obtain a craft knife and make an incision along the edges of the fob, being careful not to cut too deeply to avoid damaging the electronic board inside. When the plastic gives way, you can open the fob using a thin tool. Then, remove the board and desolder the battery, ensuring to eliminate any lead residue. Proceed to solder in the new battery. In this case, it is preferable to use a new easily opened shell, insert the board, and close it.

Updated on 28 May 2026 by ScegliAuto

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