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How to Replace the Key Battery on the Ford Focus/Ford Fiesta

Model: Ford Focus MK 4 - Years 2018-2025
Part: Key

To change the battery of the Ford Fiesta/Focus key, you will need a small flathead screwdriver and a new battery (CR2032, 3 volts). Start by removing the key from its housing, where you will find a small hook inside that allows you to remove the cover with the manufacturer's logo. Once the cover is off, you will find the battery, which you will remove using a small screwdriver by prying it from below. After removing the old battery, insert the new battery in the same way, close the cover, reinsert the key, and check the operation of the new battery.

Updated on 7 May 2026 by ScegliAuto

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