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X
To restore the factory settings: press and
hold down the % and & buttons
simultaneously for approximately six sec-
onds until the battery check lamp
(Y page 69) flashes twice.
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or with KEYLESS-
GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered.
Switch off the alarm (Y page 64).
Removing the mechanical key
X
Push release catch : in the direction of the
arrow and at the same time remove
mechanical key ; from the SmartKey.
For further information about:
R
unlocking the driver's door (Y page 73)
R
unlocking the trunk (Y page 74)
R
locking the vehicle (Y page 73)
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 sub-
stances. 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 pollutants.
It is illegal to dispose of
them with the household
rubbish. They must be col-
lected separately and dis-
posed of in an environmen-
tally responsible recycling
system.
Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used bat-
teries.
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/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.
68
SmartKey
Opening and closing
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