Change Key Battery Mercedes C300. Follow these easy steps to proactively replace your key fob battery before it kicks the bucket. Determine Your Key Type.
Use our handy Mercedes-Benz key fob replacement guide and contact our Greenwich service center at Call service Phone Number 866 285-4034 if you need any help along the way. To test the battery press the or button. We strongly recommend using a Lithium battery like these one s as they last much longer.
First you need to identify which key you have.
Httpsamznto2POnNBKIf you have a message on the dash that says to replace the key battery. Once youve removed the cover remove the exposed CR 2025 batteries and replace. These videos will show how to change the battery on different Mercedes-Benz Key Fob Remotes. A Smart Key needs two CR 2025 batteries while the Chrome Key on newer Mercedes-Benz vehicles only needs one.
