How to Replace the Key Fob Battery in a MINI Hardtop 2 Door

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 by 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. Close the lid with the coin turned clockwise until the arrowheads point toward each other.
7. Refit the cover in reverse order until it audibly engages at the top and bottom.

• Replace only with a battery of the same voltage, size and specification.
• Keep the key and batteries away from children; swallowed button cells can cause serious injury.

Source: 2025 MINI Hardtop 2 Door owner's manual, PDF pages 71, 72. 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.