How To Change Mercedes Benz Key Fob Battery. Replacing a SmartKey Mercedes-Benz Key Fob Battery To replace the battery in an older key fob first pull the latch at the end of the keyholder. The replace key battery warning light pops up on your dashboard.
The Chrome Key and Smart Key fobs are slightly different. Determine which type of key fob you have. Then move the key horizontally into the open slot and carefully lift the battery out of its compartment.
The Chrome Key and Smart Key fobs are slightly different.
Remove the cover by pushing the key into the narrow end of the slot. Determine Your Key Type. Steps for how to open your Mercedes-Benz key fob can be found below regardless of which key youre working with. Whether you have a Mercedes-Benz Chrome Key or a Mercedes-Benz Smart Key alters how the batteries are changed.
