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How to Replace the Key Fob Battery of a BMW 3 Series F31

Model: BMW Serie 3 F31, F30 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Key

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Video tutorial

In this guide, you will see how to replace the key fob battery of a BMW 3 Series F31. The first step is to pull the key out of the fob, as shown at 0:20. Now, using a screwdriver, pry open the slot where you extracted the key; this will allow you to remove the plastic cover that protects the battery.

Use the screwdriver again to extract the battery from its housing; replace it with a new CR2450 battery.

Insert it with the positive side facing you. Now simply close the plastic cover and reinsert the key.


Updated on 4 May 2026 by ScegliAuto


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To reset the tyre pressure warning light on the Jeep Renegade, inflate the tyres until they reach the recommended pressure: this value is indicated on the sticker attached to the driver’s door pillar. Once the tyres are properly inflated, navigate through the menu that appears on the instrument cluster until you find the tyre pressure option. At this point, press and hold the OK button on the right side of the steering wheel to make the warning light disappear.

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by ScegliAuto

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