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How to Change the Key Battery of the Audi S4

Model: Audi A4 B9 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Key

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Video tutorial

If you need to replace the remote key battery because it is no longer efficient, follow the instructions below and refer to the video. First, extract the emergency key by pressing the small button on the side of the remote.

Then, using the emergency key, engage the lock to open the cover that contains the battery. Remove the cover, take out the old battery, and replace it with a new one (model CR 2032). Reinsert the cover into the remote and reposition the emergency key in its housing.


Updated on 2 July 2026 by ScegliAuto


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How to Reset the Tyre Pressure Warning Light on a Kia Rio?

The tyre pressure warning light displayed on the instrument cluster of the Kia Rio can be reset by inflating the tyres until they reach the recommended pressure value: this value is indicated on the sticker affixed to the driver's door pillar. Once all tyres have been inflated to the recommended pressure, turn on the ignition to check that the light has disappeared: if it is still present, it may be necessary to drive for a few miles, allowing the sensors to work and thus turning off the light.

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by ScegliAuto

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