Change Key Fob Battery Mercedes. We strongly recommend using a Lithium battery like these ones as they last much longer. The Chrome Key and Smart Key fobs are slightly different.

Key fob reprogramming in general replace the batteries inside the key fobs. You should pull it until it is released. The Chrome Key and Smart Key fobs are slightly different.
This video shows How to swap out the inner Circuit Board and put it into a new outer shell of Mercedes Smart Key case.
The battery type for your Mercedes-Benz key fob should always be CR 2025. After the key releases there will be a visible slot at the end of the key fob. To replace your Mercedes-Benz key fob battery tug the latch at the end of the key holder locate the open slot and push your key in horizontally and then lift the battery from the compartment. Pull the bottom tab push the key into the slots narrow end to remove the cover and then.
