Mercedes-Benz C-Class Operator's Manual page 140

Driving
138
Key for the vehicle. The ignition is not
switched on. The engine cannot be started.
Vehicles with AIRPANEL: you can open the
shutters in the radiator trim by turning the
SmartKey to position 2 in the ignition lock.
After approximately 120 seconds the shut-
ters open automatically. Further information
on opening and cleaning the shutters can be
found in the Digital Operator's Manual.
Start/Stop button
General notes
When you insert the Start/Stop button into
the ignition lock, the system needs approx-
imately two seconds recognition time. You
can then use the Start/Stop button.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example,
when starting the engine.
To start the vehicle without actively using the
SmartKey:
the Start/Stop button must be inserted in
R
the ignition lock.
the SmartKey must be in the vehicle.
R
the vehicle must not be locked with the
R
SmartKey or KEYLESS-GO (
Do not store the SmartKey:
with electronic devices, e.g. a mobile
R
phone or another SmartKey.
with metallic objects, e.g. coins or metal
R
foil.
inside metallic objects, e.g. a metal case.
R
This can affect the functionality of the Smart-
Key.
If you lock the vehicle with the SmartKey's
remote control or with KEYLESS-GO, after a
short time:
you will not be able to switch on the ignition
R
with the Start/Stop button.
you will not be able to start the engine with
R
the Start/Stop button until the vehicle is
unlocked again.
If you lock the vehicle centrally using the but-
ton on the front door (
continue to start the engine with the Start/
Stop button.
The engine can be switched off while the vehi-
cle is in motion by pressing and holding the
Start/Stop button for three seconds. This
function operates independently of the ECO
start/stop automatic engine switch-off func-
tion.
Key positions with the Start/Stop button
Start/Stop button
:
Ignition lock
;
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. Further information on situations where
an indicator lamp either fails to go out after
page 89).
Y
starting the engine or lights up while driving
( page 222).
Y
If Start/Stop button : has not yet been
pressed, this corresponds to the SmartKey
being removed from the ignition.
page 92), you can
Y