How To Change Car Remote Key Battery. Toyota Key Fob Battery Replacement Kit Energizer Cr2032 2003 To 2018 Models. There are several Mercedes Smart Key remotes so make sure to look at the correct video.

First you need to identify which key you have. These fobs are powered by a small flat key fob battery. Dont over-tighten the screws as this can cause damage or issues when you need to change the battery again.
Why wont my remote key open my car door.
However the remote runs on a battery which will. Then slide the battery forwards so that it fastens under the two plastic catches. Try a Backup Remote. Grease was on the battery side of the housing.
