How to Replace the Battery in a BMW Remote?

[NorahAnn]

Pull out the mechanical key of the BMW remote upwards, locate the opening slot on the remote key's casing, and pry open the slot. Remove the lifted battery cover, replace the internal button cell battery, and then reattach the battery cover.

[DelCarter]

I just helped a friend replace the BMW key fob battery—super easy! BMW key fobs usually have a small notch or clip on the back. Just gently pry it open with a key. The button battery inside is mostly the CR2032 model—check the marking on the old one and buy the same new one. Remove the old battery, insert the new one with the positive side facing outward (usually the labeled round side), and don’t put it in backward. Snap the back cover back on and press to ensure it’s sealed. Designs may vary by model—older versions might require pressing a side button, while newer ones can be pried open with a fingernail. If unsure, check the owner’s manual or look up video tutorials online. After finishing, test the remote by pressing it a few times—if it unlocks the car or lights up, you’re good. Doing it yourself saves over a hundred bucks on shop fees, and the tools are simple and handy.