How To Replace Mini Key Battery. Key fob battery replacement for the Countryman Clubman Convertible JCW and all other MINI Cooper models both from previous and future years may be different. Once the voltage gets to a certain point the warning light will illuminate on the dash to let you know to replace the batteries.
Take your screwdriver and stick it on the fob cover until it pops up. Itll start with a two-letter prefix such as CR see the image below and your key will only work with a. The battery is running low on my Mini key 2004 model its becomming so bad that i have to stand next to the car to open it.
Remove the lower splash shield and disconnect the lower radiator hose right off the radiator.
When the key is in use the computer monitors the output voltage of the fobs battery. Will it still work after. I have heard that you have to take it to the dealer to get the battery. Next ur going to have to refill and bleed the cooling systemi do this through the coolant resevroir.
