Changing the battery in a BMW key fob is a simple task that can be completed in a few minutes. A key fob is a small, wireless device that allows you to lock and unlock your car, as well as open the trunk and panic alarm. The battery in a key fob typically lasts for several years, but it will eventually need to be replaced. If your key fob is not working properly, it may be time to change the battery.
There are a few different ways to change the battery in a BMW key fob. The most common method is to use a small screwdriver to pry open the back of the fob. Once the back is open, you can remove the old battery and insert the new one. Be sure to insert the new battery with the positive side facing up. Once the new battery is in place, you can close the back of the fob and test it to make sure it is working properly.