BMW. key fob, you’ll need to replace the battery by following these quick steps: Purchase a CR2032 battery from an auto shop or department store. You can expect to pay about $2 for it. Remove the valet key by pressing the tab on your key fob. Use the key or a flathead screwdriver to pry open your battery cover.
Here are the simple steps for replacing the BMW i3 key fob battery. Press the button at the bottom of the fob’s rear. Next, pull the integrated metal key out of the vehicle key. Push the integrated key into the space created by removing it. It will fit under the battery cover.
A flat battery in your BMW key fob could make it difficult or even impossible to access your vehicle. If this happens to you, replacing the battery is a quicNov 9, 2014. #3. Re: Key battery change. Just depress those 'parallel lines' and pull the normal key out, then use some pen or pencil or small fork (spelling checked) to open the rear cover and you will see a small battery inside. Change that. If dunno, check youtube like brudder here said. If still dunno, just go to hardware shop and the uncleWhat you need to do: Take out the actual key by pressing on the small button on the side and pull out the key as it pops out. Take your screwdriver and stick it on the fob cover until it pops up. Take out the battery cover and remove the old battery. Replace the new battery in place of the old one and pop back the cover. New Remote Battery.This how to replace the battery in a BMW key. This is for the diamond shaped keys that have the 3 buttons on the remote.Diamond Key - E46 ay1QTX.