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How to Replace the Key Fob Battery for the BMW 4 Series

Model: BMW Serie 4 F33, F36, F32, MK 1 - Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
Part: Key

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Video tutorial

The main steps today will show you how to disassemble and replace the battery in the key fob for the BMW 4 Series. First, take your key fob and start by removing the physical key from inside it; then leverage the slot created to remove the plastic back cover of the fob, accessing the battery compartment as shown in the video.

At this point, remove and replace the battery with a new one of the correct type (in this case, a CR 2450 3V); insert it in the correct orientation and reassemble the plastic cover of the fob.


Updated on 27 October 2026 by ScegliAuto


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by ScegliAuto

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