key MERCEDES-BENZ C350S 2010 W204 Owner's Guide

XInsert the KEYLESS-GO start/stop button
into the starter switch (if not inserted
already).
iAllow for 2 seconds until the system has
detected the KEYLESS-GO start/stop
button.
XVehicles with manual transmission: Shift
the manual transmission into the neutral
position (no gear selected).
or
XVehicles with automatic transmission: Shift
the automatic transmission into neutral
position N.
XDo not depress the brake pedal.
KEYLESS-GO start/stop button
=USA only?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
XPress the KEYLESS-GO start/stop button
once.
This supplies power for some electrical
consumers, e.g. wipers.
iWhen you now open the driver’s door, the
power supply is switched off.
Ignition (or position 2) XPress the KEYLESS-GO start/stop button
twice.
This supplies power for all electrical
consumers.
When you switch on the ignition, all lamps
in the instrument cluster come on. The low-
beam headlamp indicator lamp, high-beam
headlamp indicator lamp, turn signal
indicator lamps, and the indicator lamps for
the fog lamps will only come on if activated.
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 remains
on after starting the engine or comes on
while driving, refer to “Lamps in instrument
cluster” (Y page 297).
iWhen you now press the KEYLESS-GO
start/stop button once and the driver’s
door is open, the power supply is switched
off.
Seats
Safety notes
GWarning!
In order to avoid possible loss of vehicle
control the following must be done before the
vehicle is put into motion:
Rseat adjustment
Rhead restraint adjustment
Rsteering wheel adjustment
Rrear view mirror adjustment
Rfastening of seat belts
GWarning!
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position as
Seats79Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 79Z

iAMG vehicles are equipped with a seat
with an integrated head restraint. It is
therefore not possible to set the height and
angle of the head restraint.
XSeat backrest tilt: Press the switch
forward or backward in direction of
arrow :.
XSeat height: Press the switch up or down
in direction of arrow ;.
XSeat cushion tilt: Turn handwheel =
forward or backward until your upper legs
are lightly supported.
XSeat fore and aft adjustment: Lift
handle ?.
XSlide the seat to the desired position.XAllow handle ? to reengage with an
audible click.
XCheck for proper engagement before
driving.
Power seats
The seat adjustment switch is located on the
entry side of each front seat base. The seat
adjustment switches for vehicles with
memory function are located on the front
doors.
iVehicles without memory function:
The seats can be adjusted within 5 minutes
after either front door has been opened.
The counter resets each time
Ryou open or close a front door
Ryou insert the SmartKey into the starter
switch
Ryou remove the SmartKey from the
starter switch
Ryou switch the ignition on or off
Just like in vehicles with memory function,
the power seats can be operated at any
time when the ignition is switched on.
iVehicles with memory function:
The memory function (Y page 89) lets you
store the settings for the seat position
together with the settings for the steering
wheel and the exterior rear view mirrors.
Vehicles without memory function
iAMG vehicles are equipped with a seat
with an integrated head restraint. It is
therefore not possible to set the height and
angle of the head restraint.
Seats81Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 81Z

feature, which could result in an accident
and/or serious personal injury.
With the easy-entry/exit feature activated,
the steering wheel will return to its last set
position when you close the driver’s door with
the ignition switched on. The steering wheel
will also return to its last set position when
you insert the SmartKey into the starter
switch or press the KEYLESS-GO start/stop
button once with the driver’s door closed.
iThe last set steering wheel position is
stored when the ignition is switched off or
the position is stored in memory
(Y page 89).
With the easy-entry/exit feature activated,
the steering wheel tilts upwards when you
remove the SmartKey from the starter switch.
The steering wheel also tilts upwards when
you open the driver’s door with the SmartKey
in starter switch position 0 or 1 or the
KEYLESS-GO start/stop button in position 1.
iWhen 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.
GWarning!
Let the system complete the adjustment
procedure before setting the vehicle in
motion. All steering wheel adjustment must
be completed before setting the vehicle in
motion. Driving off with the steering wheel
still adjusting could cause the driver to lose
control of the vehicle.
Crash-responsive exit aid
When you open the driver’s door after an
accident has occurred, the steering column
moves up. The position of the SmartKey in the
starter switch is insignificant. This function
facilitates exiting as well as rescue of vehicle
occupants.
The crash-responsive exit aid can only be
triggered when the easy-entry/exit feature is
activated via the control system.
Mirrors
Notes
Adjust the interior and exterior rear view
mirrors before driving so that you have a good
view of the road and traffic conditions.
Interior rear view mirror
XAdjust the interior rear view mirror
manually.
Interior rear view mirror, antiglare
position
XTilt the mirror to the antiglare position by
moving lever : towards the windshield.
The interior rear view mirror is dimmed.
Exterior rear view mirrors
GWarning!
Exercise care when using the passenger-side
exterior rear view mirror. The mirror surface
is convex (outwardly curved surface for a
wider field of view). Objects in mirror are
closer than they appear. Check your interior
rear view mirror and glance over your
shoulder before changing lanes.
86MirrorsControls in detail
204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 86

Recalling positions from memoryXPress and hold desired memory position
button 1, 2 or 3 until the seat has moved
to the stored position completely. On the
driver’s side, also wait for the steering
wheel and exterior rear view mirrors to
move to the stored position.
iReleasing the memory position button
stops movement to the stored positions
immediately.
Lighting
Notes
iIf you drive in countries with left-hand
driving, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained at
any authorized Mercedes-Benz Center.
iVehicles equipped with active Bi-Xenon
headlamps:
The active Bi-Xenon headlamps increase
usable illumination over conventional
headlamps because they follow the
curvature of the road ahead. The beams of
the active Bi-Xenon headlamps shift to
either side according to the vehicle’s
steering angle and speed.
Exterior lamp switch1 WStanding lamps, left2 XStanding lamps, right3 $Off
Daytime running lamp mode
4 cAutomatic headlamp mode
Daytime running lamp mode
5 TParking lamps (also tail lamps,
license plate lamps, side marker
lamps and instrument panel lamps)
6 LLow-beam headlamps or high-beam
headlamps
7 NFront fog lamps8 RRear fog lamp
iThe exterior lamps (except standing
lamps or parking lamps) go out
automatically when you remove the
SmartKey from the starter switch or open
the driver’s door with the ignition switched
off.
When the parking lamps or the rear fog
lamp are switched on and you remove the
SmartKey from the starter switch and open
the driver’s door, an acoustic signal
sounds.
In addition the message Switch Off
Lights appears in the multifunction
display.
Switch off the parking lamps or the rear fog
lamp manually.
90LightingControls in detail
204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 90

! Failure to switch off the parking lamps
when leaving the vehicle may result in a
discharged battery.
Low-beam headlamps
The low-beam headlamps can be switched on
and off with the exterior lamp switch.
XSwitch on the ignition.XSwitching on: Turn the exterior lamp
switch to position L.
The following lamps come on:
R Low-beam headlamps
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
R Instrument panel lamps
R Green indicator lamp L in the
instrument clusterXSwitching off: Turn the exterior lamp
switch to position $.
Automatic headlamp mode
The following lamps come on and go out
automatically depending on the brightness of
the ambient light:
R Low-beam headlamps
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
GWarning!
If the exterior lamp switch is set to c, the
headlamps will not automatically come on
under foggy conditions.
To minimize risk to you and to others, activate
headlamps by turning exterior lamp switch to
L when driving or when traffic and/or
ambient lighting conditions require you to do
so.
In low ambient lighting conditions, only switch
from position c to L with the vehicle
at a standstill in a safe location. Switching
from c to L will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions 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.XSwitching on: Turn the exterior lamp
switch to position c.
The following lamps come on and go out
depending on the brightness of the ambient
light with the SmartKey in starter switch
position 1 or the KEYLESS-GO start/stop
button pressed once:
R Tail lamps
R Parking lamps
R License plate lamps
R Side marker lamps
When the engine is running, the low-beam
headlamps will also come on and turn off
automatically.
Canada only: High-beam headlamps are only
available in low ambient lighting conditions.
Daytime running lamp mode
In Canada, the daytime running lamp mode is
mandatory and therefore in a constant mode.
In the USA, the daytime running lamp mode
is deactivated by default.
XActivate the daytime running lamp mode
using the control system, see “Switching
daytime running lamp mode on or off (USA
only)” ( Y page 133).XTurn the exterior lamp switch to position
$ or c .
When the engine is running, the low-beam
headlamps come on.Lighting91Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 91Z

Combination switch
Turn signals
XPress the combination switch in direction
of arrow ; or ?.
The corresponding turn signal indicator
lamp ! or # in the instrument
cluster flashes.
The combination switch resets automatically
after major steering wheel movements.
To signal minor directional changes:
XPress the combination switch only to the
point of resistance in direction of
arrow ; or ? and release.
The corresponding turn signal lamps will
flash three times.
High beam
XTurn the exterior lamp switch to position
L (Y page 90).
XSwitching on: Push the combination
switch in direction of arrow :.
The high-beam headlamp indicator lamp
K in the instrument cluster comes on.
XSwitching off: Pull the combination switch
in direction of arrow = to its original
position.
iAlso note the information on high-beam
headlamps with activated automatic
headlamp mode (Y page 91) or the daytime
running lamp mode (Y page 91).
High-beam flasher XSwitching on: Pull the combination switch
briefly in direction of arrow =.
Hazard warning flasher
The hazard warning flasher can be switched
on at all times, even with the SmartKey
removed from the starter switch.
The hazard warning flasher comes on
automatically when an air bag deploys.
XSwitching on: Press hazard warning
flasher switch :.
All turn signal lamps are flashing.
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
ignition is switched on.
XSwitching off: Press hazard warning
flasher switch : again.
iIf the hazard warning flasher has been
activated automatically, press hazard
warning flasher switch : to switch it off.
Headlamp cleaning system
The headlamps will be cleaned with a high-
pressure water jet automatically when the
engine is running and you have
Rswitched on the headlamps
Lighting93Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 93Z

Interior lighting in the front:v Rear interior lighting on/off;~ Automatic control on/off=p Right front reading lamp on/off?c Front interior lighting on/off Ap Left front reading lamp on/offBFront reading lamps CFront interior lighting
Automatic control
XActivating: Press button ~.
Button ~ disengages and sits flush with
the other buttons.
The interior lighting comes on, when you
Runlock the vehicle
Rremove the SmartKey from the starter
switch (Interior Lighting Delay:
must be switched on (Y page 135))
Ropen a door
iIf a door remains open, the interior lamps
go out automatically after approximately
5 minutes.
XDeactivating: Press button ~.
Button ~ engages.
Manual control
! An interior lamp switched on manually
does not go out automatically.
Leaving an interior lamp switched on for an
extended period of time with the engine
turned off could result in a discharged
battery.
XSwitching front interior lighting on/
off: Press switch c.
XSwitching rear interior lighting on/off:
Press switch v.
XSwitching front reading lamps on/off:
Press respective button p.
Emergency lighting
When the interior lighting is set to automatic
mode, the interior lighting comes on
automatically if the vehicle is involved in an
accident.
Switching off:
XPress hazard warning flasher switch
(Y page 93).
or
XUnlock the vehicle with the SmartKey.
Interior lighting in the rear
! An interior lamp switched on manually
does not go out automatically.
Leaving an interior lamp switched on for an
extended period of time with the engine
turned off could result in a discharged
battery.
Lighting95Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 95Z

the presence of water sprayed on the
windshield, and windshield wipers may be
damaged as a result.
! Vehicles with rain sensor: If you have set
intermittent wiping, dirt on the surface of
the rain sensor or optical effects may cause
the windshield wipers to wipe in an
undesired fashion. This could then damage
the windshield wiper blades or scratch the
windshield. You should therefore switch off
the windshield wipers when weather
conditions are dry.
Vehicles with rain sensor: Intermittent wiping
interval is dependent on the wetness of the
windshield. After the initial wipe, pauses
between wipes are controlled by the rain
sensor automatically.XTurn the combination switch to position
Ä or Å .
Intermittent wiping starts with selected
wiping interval.
Intermittent wiping is interrupted when the
vehicle is at a standstill and a front door is
opened. This protects persons getting into or
out of the vehicle from being sprayed.
Intermittent wiping will be continued when all
doors are closed and
R the clutch pedal is depressed (vehicles with
manual transmission)
or
R the automatic transmission is in drive
position D or reverse gear R (vehicles with
automatic transmission)
or
R the wiper setting is changed using the
combination switch
Single wipe
XPress the combination switch briefly in
direction of arrow B to the resistance
point.
The windshield wipers wipe one time
without washer fluid.Wiping with washer fluidXPress the combination switch in direction
of arrow B past the resistance point.
The windshield wipers operate with washer
fluid.
i To prevent smears on the windshield or
noisy/chattering wiper blades, wipe with
washer fluid every now and then even when
it is raining.
For information on filling up the washer
reservoir, see “Washer system and headlamp
cleaning system” ( Y page 228).
For information on cleaning the headlamps
with washer fluid, see “Headlamp cleaning
system” ( Y page 93).
Problems with wipers
! If anything blocks the windshield wipers
(leaves, snow, etc.), switch them off
immediately.
For safety reasons, do the following before
attempting to remove any blockage:
R Stop the vehicle in a safe location.
R Remove the SmartKey from the starter
switch.
or
R Turn off the engine by pressing the
KEYLESS-GO start/stop button and
open the driver’s door (with the driver’s
door open, starter switch is in position
0 , same as with SmartKey removed from
starter switch).
R Engage the parking brake.
R Remove blockage.
R Turn the windshield wipers on again.
Wipers97Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 97Z

If the windshield wipers fail to function at
all with the combination switch in position
Ä or Å,
Rset the combination switch to the next
higher wiper speed
Rhave the windshield wipers checked at
the nearest authorized Mercedes-Benz
Center
Power windows
Opening and closing
The door windows are opened and closed
electrically. The switches for all door windows
are located on the driver’s door control panel.
The switches for the respective door windows
are located on the front passenger door and
on the rear doors.
i Operating the rear door windows from
the rear is not possible when you activate
the override switch (Y page 59).
GObserve Safety notes, see page 54.GWarning!
When opening or closing the door windows,
make sure there is no danger of anyone being
harmed by the opening/closing procedure.
The door windows are equipped with the
express operation and automatic reversal
function. If in express operation mode a door
window encounters an obstruction that
blocks its path, the automatic reversal
function will stop the door window and open
it slightly.
The door windows operate differently when
the switch is pulled and held. See the “Closing
when a door window is blocked” section in
this chapter for details.
The closing of the door windows can be
immediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing the door windows by pressing
and holding button & on the SmartKey or
by pressing and holding the sensor surface
(vehicles with KEYLESS-GO) on an outside
door handle, the automatic reversal function
will not operate.
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the door window
opening.
GWarning!
Do not keep any part of your body up against
the window pane when opening a window. The
downward motion of the pane may pull that
part of your body down between the window
pane and the door frame and trap it there. If
there is a risk of entrapment, release the
switch and pull it to close the window.
iYou can also open or close the door
windows using the SmartKey, see
“Summer opening feature” (Y page 99)
and “Convenience closing feature”
(Y page 100).
iAfter switching off the ignition or
removing the SmartKey from the starter
switch, you can operate the door windows
until you open the driver’s or front
passenger door. If no door was opened you
can operate the door windows for up to
5 minutes.
98Power windowsControls in detail
204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 98

XSwitch on the ignition.XOpening/closing: Press or pull and hold
switch : to ? to the resistance point.
The corresponding door window moves
downward or upward until you release the
switch.XExpress operation: Press or pull
switch : to ? past the resistance point
and release.
The corresponding door window opens or
closes completely.XStopping during express operation:
Press or pull the respective switch again.
Closing when a door window is blocked
GWarning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing a door window with greater force or
without automatic reversal function.
If the upward movement of a door window is
blocked during the closing procedure, the
door window will stop and open slightly.
XImmediately after the door window has
stopped because it was blocked, pull and
hold the respective switch upward until the
door window is fully closed.
The door window closes with greater force.
If the door window is blocked again and opens
slightly:
XImmediately after the door window was
blocked, pull and hold the respective
switch upward until the door window is fully
closed.
The door window closes without automatic
reversal function.GWarning!
Pulling and holding the switch to close the
door window immediately after it had been
blocked two times will cause the door window
to close without any reversal function for as
long as you hold the switch.
Synchronizing door windows
The door windows must be synchronized if
they cannot be fully closed (express
operation).
Each door window must be synchronized
separately.XClose all doors.XSwitch on the ignition.XPull and hold switch :, ; , = or ?
( Y page 98) until the respective door
window is closed.
The door window opens again slightly.XPull and hold the respective switch once
more immediately until the door window is
closed completely.XHold the respective switch for
approximately 1 second.
The door window is synchronized.
Summer opening feature
When the weather is warm, you can ventilate
the vehicle before driving off by
simultaneously
R opening the door windows
R opening the tilt/sliding sunroof
R opening the panorama roof with power tilt/
sliding panel and roller sunblinds
The summer opening feature can only be
activated via the remote control of the
SmartKey. The SmartKey must be in close
proximity to the driver’s outside door handle.
XAim the transmitter eye of the SmartKey at
the driver’s outside door handle.
Vehicles with tilt/sliding sunroof
XPress and hold button % on the
SmartKey until the door windows and thePower windows99Controls in detail204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 99Z