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How to Replace the Key Fob Battery on a BMW 1 Series?

Model: BMW Serie 1 F21, MK 2, F20 - Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Key

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Video tutorial

In this tutorial, you can see how to replace the key fob battery on a BMW 1 Series, a very simple and quick operation. For this, you will need a replacement battery of type CR2450 and, if necessary, a small flathead screwdriver.

First, extract the emergency metal key by pressing the designated button, then insert the key into the indicated slot, lever it, and remove the rear cover. At this point, remove the old battery, insert the replacement while respecting the polarity, and reassemble everything.


Updated on 24 September 2026 by ScegliAuto


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by ScegliAuto

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