Mercedes-Benz 2013 C-Class Coupe Owner's Manual page 88

Key
86
X
Press emergency key element ; into the
opening in the key in the direction of the
arrow until battery compartment cover :
opens. While doing so, do not hold battery
compartment cover : shut.
X
Remove battery compartment cover :.
X
Repeatedly tap the key against your palm
until battery = falls out.
X
Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X
Make sure that the surface of the battery is
free from lint, grease and all other forms of
contamination.
X
Insert the front tabs of battery compart-
ment cover : into the housing and then
press to close it.
X
Insert emergency key element ; into the
key.
X
Check the function of all key buttons on the
vehicle.