For further information about:
R
unlocking the driver's door (
Y
page 83)
R
unlocking the trunk (
Y
page 89)
R
locking the vehicle (
Y
page 84)
Inserting the mechanical key
X
Push mechanical key
;
completely into the
SmartKey until it engages and release
catch
:
is back in its basic position.
SmartKey battery
Important safety notes
G
WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
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.
H
Environmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work-
shop.
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 79).
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 obtain a battery from any qualified
specialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the SmartKey
(
Y
page 78).
X
Press mechanical key
;
into the SmartKey
opening in the direction of the arrow until bat-
SmartKey
79
Opening
and
cl
os
ing
Z
