2008 MERCEDES-BENZ C350S start stop button

79 Controls in detail
Locking and unlocking
Loss of the SmartKey or SmartKey with
KEYLESS-GO* (Canada only)
If you lose your SmartKey, SmartKey with
KEYLESS-GO or mechanical key, you
should do the following:
Have the SmartKey or SmartKey with
KEYLESS-GO deactivated at an autho-
rized Mercedes-Benz Center.
Report the loss of the SmartKey,
SmartKey with KEYLESS-GO or the
mechanical key immediately to your
car insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a
replacement.
Opening doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handle
iIf the vehicle has previously been locked
with the SmartKey or KEYLESS-GO*, opening a
door from the inside will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the following:

Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.

Press button Œ or ‹ on the SmartKey
or SmartKey with KEYLESS-GO*.
In vehicles with KEYLESS-GO*:

Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.

Press the KEYLESS-GO* start/stop button
(
page 84).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
iIf you hear a warning signal you have
forgotten to switch off the low beam headlamps
or the parking lamps before opening the driver’s
door.
In addition the message
Switch Off Lights
appears in the multifunction display.
Switch off the low beam headlamps or the park-
ing lamps.
If the message
Switch Off Lights or Re-
move Key
appears in the multifunction display
remove the SmartKey from the starter switch or
switch off the automatic headlamp mode.

83 Controls in detail
Starter switch positions
SmartKey with KEYLESS-GO*
(Canada only)
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a re-
movable KEYLESS-GO start/stop button.
With the KEYLESS-GO start/stop button
inserted and the SmartKey with
KEYLESS-GO present in the vehicle, press-
ing the KEYLESS-GO start/stop button

without the brake pedal depressed
corresponds to the various starter
switch positions (
page 84)

with the brake pedal firmly depressed
will start the engine (
page 128)If you wish or should there be a need to in-
sert the SmartKey with KEYLESS-GO in the
starter switch, the KEYLESS-GO start/stop
button can be easily removed by pulling it
out of the starter switch.
1KEYLESS-GO start/stop button
2Starter switch
Insert KEYLESS-GO start/stop
button1 into starter switch 2 (if not
inserted already).
iThe function of the SmartKey overrules the
KEYLESS-GO function.
iThe KEYLESS-GO start/stop button does
not need to be removed from the starter switch
when you leave the vehicle. However, always
take the SmartKey with KEYLESS-GO with you
when you leave the vehicle. As long as the
SmartKey with KEYLESS-GO is in the vehicle, the
vehicle’s electrical systems can be switched on
or the engine can be started using the
KEYLESS-GO start/stop button.
iWhen you switch from SmartKey mode back
to KEYLESS-GO mode, the system requires
2 seconds of detection time before you can use
the KEYLESS-GO button as usual.


84 Controls in detail
Starter switch positions
The SmartKey with KEYLESS-GO must be
located in the vehicle.
Make sure the gear selector lever is set
toP.
Do not depress the brake pedal.
1KEYLESS-GO start/stop button
(Canada only)
Position 0
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status 0 (as with
SmartKey removed).Position 1
Press the KEYLESS-GO start/stop but-
ton once.
This supplies power for some electrical
consumers, such as seat adjustment.
Ignition (or position 2)
Press the KEYLESS-GO start/stop but-
ton twice.
This supplies power for all electrical
consumers.
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary. If a lamp in the instrument cluster re-
mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 374).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button,
see “Starting: Make sure KEYLESS-GO
start/stop button is inserted in the starter
switch (e page 83).” (
page 128).
iIf you now press the KEYLESS-GO
start/stop button

once again, the ignition (position2) is
switched on

twice, the power supply is again switched off
iIf you now press the KEYLESS-GO
start/stop button once, the power supply is
again switched off.
iWhen you switch on the ignition, the indica-
tor and warning lamps (except high beam head-
lamp indicator lamp and turn signal indicator
lamps unless activated) in the instrument cluster
come on. The indicator and warning lamps (ex-
cept high beam headlamp indicator lamp and
turn signal indicator lamps if activated) should go
out when the engine is running. This indicates
that the respective systems are operational.


87 Controls in detail
Seats
If it is not possible to adjust the seat with
the seat adjustment switch:
Insert the SmartKey or the
KEYLESS-GO start/stop button*
(Canada only) into the starter switch.
or
With SmartKey or KEYLESS-GO*
(Canada only) in starter switch
position0. Turn the SmartKey in
starter switch to position1 or press
the KEYLESS-GO start/stop button*
(Canada only) once.
or
Open the driver’s or front passenger
door.
Seat cushion tilt: Press the switch up
or down in the direction of
arrow1until your upper legs are
lightly supported.
Seat height: Press the switch up or
down in the direction of arrow2.
Seat fore and aft: Press the switch for-
ward or backward in the direction of
arrow3.
Seat backrest tilt: Press the switch
forward or backward in the direction of
arrow4.Adjusting front seat head restraints
You cannot remove the active head re-
straint on the driver’s and front passen-
ger’s seat.
For removal contact an authorized
Mercedes-Benz Center.
For information on active head restraints,
see “Active head restraints” (
page 50).
iCanada only:
The memory function* (
page 102) lets you
store the settings for the seat positions together
with the settings for the steering wheel and the
exterior rear view mirrors.
!When moving the seat, make sure there are
no items in the footwell or behind the seats. Oth-
erwise you could damage the seats.
Warning!G
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level. This will reduce the po-
tential for injury to the head and neck in the
event of an accident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.

95 Controls in detail
Steering wheel
Easy-entry/exit feature* (Canada only)
This feature allows for easier entry into and
exit from the vehicle. When entering and
exiting the vehicle, the steering wheel is in
its uppermost position.
The easy-entry/exit feature can be activat-
ed or deactivated in the
Convenience sub-
menu of the control system (
page 174).With the easy-entry/exit feature activated
the steering wheel tilts upwards when you:

remove the SmartKey from the starter
switch,
or

open the driver’s door with the
SmartKey in starter switch position0
or1 or the KEYLESS-GO* start/stop
button in position1
Warning!G
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To stop steering wheel movement, do one of
the following:

Move steering wheel adjustment stalk.

Press one of the memory position but-
tons or the memory buttonM.
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
Warning!G
Let the system complete the adjustment
procedure before setting the vehicle in mo-
tion. All steering wheel adjustments must be
completed before setting the vehicle in mo-
tion. Driving off with the steering wheel still
adjusting could cause the driver to lose con-
trol of the vehicle.
iIf the current position for the steering wheel
is in the uppermost tilt position, the steering
wheel will no longer be able to move upward
when the easy-entry/exit feature is activated.
The adjustment procedure is briefly interrupted
when the engine is started.

96 Controls in detail
Steering wheel
With the easy-entry/exit feature activated,
the steering wheel will return to their last
set memory position when you:

close the driver’s door with the ignition
switched on,
or

insert the SmartKey into the starter
switch or press the KEYLESS-GO*
start/stop button once with the driv-
er’s door closed.
iThe last set steering wheel positions are
stored when

the ignition is switched off

the position is stored in memory
(
page 102)

109 Controls in detail
Lighting
The following lamps switch on:

Low beam headlamps

Tail and parking lamps

License plate lamps

Side marker lamps
Switching off: Turn the exterior lamp
switch to positionM.
The green indicator lampC in the
exterior lamp switch goes out.
Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:

Low beam headlamps

Tail and parking lamps

License plate lamps

Side marker lamps
Turn the exterior lamp switch to
position*.
With the SmartKey in starter switch
position1 or the KEYLESS-GO*
start/stop button (Canada only)
pressed once, the tail and parking
lamps, the license plate lamps and the
side marker lamps will switch on and
off depending on the brightness of the
ambient light.
When the engine is running, the low
beam headlamps, the tail and parking
lamps, the license plate lamps, and the
side marker lamps will switch on and
off depending on the brightness of the
ambient light.
Warning!G
If the exterior lamp switch is set to*,
the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others,
activate headlamps by turning exterior lamp
switch to positionB when driving or
when traffic and/or ambient lighting condi-
tions require you to do so.
In low ambient lighting conditions, only
switch from position * to B with the
vehicle at a standstill in a safe location.
Switching from position* to B will
briefly switch off the headlamps. Doing so
while driving in low ambient lighting condi-
tions may result in an accident.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle’s lights at all
times.
iCanada only:
High beam headlamps are only available with the
exterior lamp switch in position B.

114 Controls in detail
Lighting
Hazard warning flasher
The hazard warning flasher can be
switched on at all times, even with the
SmartKey removed from the starter switch
or with the SmartKey with KEYLESS-GO*
removed from the vehicle.
The hazard warning flasher is automatical-
ly switched on if

an air bag has been triggered

you brake the vehicle strongly at a
speed of more than 50 mph (70 km/h)
and bring it to a complete stop
1Hazard warning flasher switch
Switching on: Press hazard warning
flasher switch.
All turn signals will flash.
Switching off: Press hazard warning
flasher switch again.
If the hazard warning flasher was acti-
vated automatically, press hazard
warning flasher switch
1 twice to
switch off the hazard warning flasher.
The hazard warning flasher switched
off automatically at vehicle speeds of
approximately 6 mph (10 km/h) or
more.
Interior lighting
Overhead control panel
1Rear interior lighting on/off
2Interior lighting control
3Right reading lamp on/off
4Front interior lighting on/off
5Left reading lamp on/off
6Left/right reading lamp
7Front interior lamps
iWith the hazard warning flasher activated
and the combination switch set for either left or
right turn, only the respective left or right turn
signals will operate when the SmartKey in the
starter switch is in position
1 or2 or the
KEYLESS-GO* start/stop button (Canada only)
(
page 84) is pressed once or twice.