Mercedes-Benz SL 2018 Operator's Manual page 78

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SmartKey
76
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
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 SmartKey
X
(
page 75).
Y
page 76).
Y
Press mechanical key ; into the SmartKey
X
opening in the direction of the arrow until bat-
tery compartment cover : 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 compartment
X
cover : into the housing and then press to
close it.
Insert mechanical key ; into the SmartKey
X
(
page 75).
Y
Check the function of all SmartKey buttons on
X
the vehicle.

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