How to Replace the Key Fob Battery in a MINI Convertible

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. Turn a coin counterclockwise to open the battery compartment lid.
4. Remove the old battery from the battery housing.
5. Insert a CR2032 3V battery with the positive terminal facing up.
6. Turn a coin clockwise to close the lid until the arrowheads point toward each other.
7. Refit the cover in reverse order until it audibly engages at the top and bottom.

• Only use a replacement battery with the same voltage, size and specification.
• Dispose of old batteries at a collection point or through a service center; do not put them in household waste.

Source: 2025 MINI Convertible owner's manual, PDF pages 68, 69. 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.