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How to Replace the Key Fob Battery for the BMW 3 Series?

Model: BMW Serie 3 E46 - Years 1998-2006
Part: Key

To replace the key fob battery for the BMW 3 Series, use a thin object to pry open the groove that separates the two halves of the fob. By prying, you can separate the two halves and access the components inside the fob. Remove the old battery from its housing and replace it with a new one. At this point, reposition the battery and the corresponding chip inside the fob, close the shell, and check that the device functions correctly.

Updated on 12 August 2026 by ScegliAuto

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