Replacing - Mercedes-Benz S-Class Operator's Manual

SmartKey
94
Checking the battery
Press the & or % button.
X
The battery is working properly if battery
check lamp : lights up briefly.
The battery is discharged if battery check
lamp : does not light up briefly.
Change the battery (
X
i
If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the & or % button:
locks or
R
unlocks the vehicle
R
i
You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
Take the mechanical key out of the Smart-
X
Key ( page 93).
Y
Press mechanical key ; into the opening
X
in the SmartKey in the direction of the
arrow until battery compartment cover :
page 94).
Y
opens. Do not hold battery compartment
cover : closed while doing so.
Remove battery compartment cover :.
X
Repeatedly tap the SmartKey against your
X
palm until battery = falls out.
Insert the new battery with the positive ter-
X
minal facing upwards. Use a lint-free cloth
to do so.
Make sure that the surface of the battery is
X
free of lint, grease and other contaminants.
Insert the front tabs of battery compart-
X
ment cover : into the housing first and
then press to close it.
Insert mechanical key ; into the Smart-
X
Key.
Check the function of all SmartKey buttons
X
on the vehicle.