How to Upgrade Your BMW Key 1 Series If your BMW key fob isn't operating well, it's likely that it requires a new battery. They're also known as coin batteries that can be replaced with just a few steps. Each key is linked to an individual driver profile and can https://g2874607.suomiblog.com/the-complete-list-of-bmw-battery-replacement-key-dos-and-don-ts-46378412