Mercedes-Benz C-Class Operator's Manual page 84

SmartKey
82
You will receive visual and acoustic locking con-
firmation if all components were able to be
locked.
When the locator lighting is activated via the
multimedia system, it lights up when it is dark
after the vehicle is unlocked with the SmartKey
(see the Digital Operator's Manual).
To open the trunk lid automatically from
X
outside the vehicle: press and hold the F
button until the trunk lid opens.
To open the trunk lid automatically from
X
outside the vehicle: if the SmartKey is loca-
ted in the immediate vicinity of the vehicle,
press the F button on the SmartKey.
When the trunk lid closes you can then
release the button.
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart-
Key in the vehicle.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the
& button on the SmartKey.
The driver's door and the door at which the han-
dle is used, must both be closed. The SmartKey
must be outside the vehicle. When locking or
unlocking with KEYLESS-GO, the distance
between the SmartKey and the corresponding
door handle must not be greater than 3 ft (1 m).
A brief radio connection between the vehicle
and the key determines whether a valid Smart-
Key is in, or in the direct vicinity of, the vehicle.
This occurs, for example:
when starting the engine
R
while driving
R
when using HANDS-FREE ACCESS
R
when the external door handles are touched
R
during convenience closing
R
To unlock the vehicle: touch the inner sur-
X
face of the door handle.
To lock the vehicle: touch sensor surface :
X
or ;.
Make sure that you do not touch the inner
surface of the door handle.
Convenience closing feature: touch
X
recessed sensor surface ; for an extended
period.
Further information on the convenience clos-
ing feature ( page 96).
Y
To unlock the trunk lid: pull the handle on
X
the trunk lid.
Deactivating and activating
If you do not intend to use a key for an extended
period of time, you can deactivate the KEYLESS-
GO function of the SmartKey. The SmartKey will
then use very little power, thereby conserving
battery power. For the purposes of activation/
deactivation, the vehicle must not be nearby.
To deactivate: press the & button on the
X
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
flashes twice briefly and lights up once, then
KEYLESS-GO is deactivated (
To activate: press any button on the Smart-
X
Key.
or
Insert the SmartKey into the ignition lock.
X
KEYLESS-GO and all of its associated features
are available again.
page 84).
Y