severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/Hazard-
ousWaste/Perchlorate/index.cfm.
Checking the battery
X
Press the
&
or
%
button.
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.
X
Change the battery (
Y
page 75).
i
If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the
&
or
%
button:
R
locks or
R
unlocks the vehicle
i
You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the Smart-
Key (
Y
page 74).
X
Press mechanical key
;
into the SmartKey
opening 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
:
.
X
Repeatedly tap the SmartKey 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 of lint, grease and other contaminants.
X
Insert the front tabs of battery compart-
ment cover
:
into the housing and then
press to close it.
SmartKey
75
Opening
and
closing
Z
Summary of Contents for 2015 SLK
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Page 257: ...Useful information 256 Stowage areas 256 Features 258 255 Stowage and features ...
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