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Replacing the Remote Key Battery for BMW 3 Series E90

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

Today, you will learn how to disassemble and replace the battery of the remote key for a BMW 3 Series E90 in simple steps. First, take your remote and use a thin tool to pry open the sides, separating the two halves of the remote casing. Next, access the circuit board and the battery, remove the old battery, and replace it with a new one of the correct type (in this case, a 2020 3V battery). Finally, insert the new battery in the correct orientation and reassemble the remote, ensuring both halves are closed and secured properly.

Updated on 19 April 2026 by ScegliAuto

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