Mercedes-Benz Metris Operator's Manual page 72

Key
70
Push mechanical key ; into the opening in
X
the key in the direction of the arrow until bat-
tery compartment cover : opens. When
doing so, do not hold battery compartment
cover : shut.
Remove battery compartment cover :.
X
Tap the key against the palm of your hand so
X
that battery = falls out of the battery com-
partment.
Insert the new battery into the battery tray
X
with the positive pole facing upwards. Use a
lint-free cloth to do so.
Install battery compartment cover : to the
X
key casing with the front lugs first and push
closed.
Slide mechanical key ; back into the key
X
( page 69).
Y
Check the function of all key buttons on the
X
vehicle.