How to Replace the Key Fob Battery in a MINI SE Countryman

1. Press and hold the button, then pull the cover out of the lower locking mechanism.
2. Pull the cover out of the upper locking mechanism and remove it.
3. Use a coin to open the battery compartment lid, turning the coin counterclockwise.
4. Remove the old battery from the battery housing.
5. Insert a CR2032 3V battery with the positive terminal facing up.
6. Use a coin to close the lid clockwise until the arrowheads point toward each other.
7. Put the cover back on in reverse order until it audibly engages at the top and bottom.

• Always use a replacement battery with the same voltage, size and specification.
• Keep the key and batteries away from children; a swallowed button cell can cause serious injury.
• Dispose of old batteries at a collection point or through a service center, not with household waste.

Source: 2025 MINI SE Countryman owner's manual, PDF pages 75, 76. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.