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

:
Battery compartment cover
;
Mechanical key
X Press mechanical key ; into the opening
in the SmartKey in the direction of the
arrow until battery compartment cover :
opens. Do not hold battery compartment
cover : closed while doing so.
X Remove battery compartment cover :.
=
Battery
X Repeatedly tap the SmartKey against your
palm until battery = falls out.
X Insert the new battery with the positive
terminal 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
compartment cover : into the housing
first and then press to close it.
X Insert mechanical key ; into the
SmartKey.
X Check the function of all SmartKey buttons
on the vehicle.
84
SmartKey
Opening/closing