Mercedes-Benz 2013 GLS Class - Manual (Page 86)

:
Battery compartment cover
;
Emergency key element
X Press emergency key element ; into the
opening in the key in the direction of the
arrow until battery compartment cover :
opens. When doing so, do not hold battery
compartment cover : shut.
X Remove battery compartment cover :.
=
Battery
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 (
Y page 82).
X Check the function of all key buttons on the
vehicle.
84
Key
Opening and closing