2007 MERCEDES-BENZ C350 4MATIC engine

88 Safety and Security
Driving safety systems
Four wheel electronic traction system
(4MATIC) with the ESP®
Models with all-wheel-drive only.
The 4MATIC improves vehicle’s ability to
use available traction, e.g. during winter
operation in mountains under snowy
conditions, by applying power to all four
wheels.
Warning!G
If you see the ESP® warning lampv
flashing in the instrument cluster, proceed
as follows:

While driving off, apply as little throttle
as possible

While driving, ease up on the accelera-
tor

Adapt your speed and driving style to
the prevailing road conditions
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP
® cannot prevent accidents result-
ing from excessive speed.
!Do not tow with one axle raised.
Otherwise the transfer case can be damaged,
which is not covered by the Mercedes-Benz
Limited Warranty.
!Performance testing must only be conduct-
ed on a two-axle dynamometer.
Otherwise the transfer case can be damaged,
which is not covered by the Mercedes-Benz
Limited Warranty.
!Because the ESP® operates automatically,
the engine must be shut off (SmartKey in starter
switch position0 or1) when the parking brake is
being tested on a brake test dynamometer.
Active braking action through the ESP
® may
otherwise seriously damage the front or rear axle
brake system.
Operational tests with the engine running can
only be conducted on a two-axle dynamometer.
iAt highly demanding operating conditions,
the electronic traction system may temporarily
switch off to prevent overheating of the drive
wheel brakes. The message
unavailable
See Operator’s Manual
will then appear in
the multifunction display while the ESP® warning
lampv is flashing. The ESP® is still function-
ing normally.

89 Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating
Remove the SmartKey from the starter
switch.
Deactivating
Switch on the ignition (page 32).
Anti-theft alarm system*
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door

the trunk

the hood
The alarm will stay on even if the activating
element (e. g. a door) is immediately
closed.The alarm system will also be triggered
when

opening the vehicle with the
mechanical key

someone opens a door from the inside

someone opens the trunk with the
emergency release button
iStarting the engine will also deactivate the
immobilizer.
In case the engine cannot be started (yet the ve-
hicle’s battery is charged), the system is not op-
erational. Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).
iIf the alarm stays on for more than
30 seconds, a call to the Response Center is ini-
tiated automatically by the Tele Aid system*
(
page 247) provided Tele Aid service was
subscribed to and properly activated, and that
necessary cellular service and GPS coverage are
available.

103 Controls in detail
Seats
Folding head restraints back with
switch in the center console
1Switch for rear seat head restraints
Start the engine (page 46).
Press switch1.
The rear seat head restraints will fold
backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.Head restraint tilt (rear outer seats)
Two different head restraint angle
positions are available:
Press the release button (page 102)
and tilt the head restraint to the
desired position.
Warning!G
Make sure the head restraints engage when
placing them upright. Otherwise their
protective function cannot be assured.
iAdjust the head restraint in such a way that
it is as close to the head as possible.

110 Controls in detail
Lighting
Manual headlamp mode
The low beam headlamps and the parking
lamps can be switched on and off with the
exterior lamp switch.
Turn the exterior lamp switch to
positionB.
Automatic headlamp mode
The following lamps switch on and off
automatically 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
positionU.
With the SmartKey in starter switch
position1, only the parking lamps and
the side marker lamps will switch on
and off automatically.
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 automatically.
Warning!G
If the exterior lamp switch is set toU,

the headlamps may switch off
unexpectedly when the system senses
bright ambient light, for example light
from oncoming traffic.

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 toB when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from positionU toB with the
vehicle at a standstill in a safe location.
Switching fromU toB 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.
iUSA only:
With the automatic headlamp mode activated
you can switch on the high beam headlamps in
low ambient lighting conditions.

111 Controls in detail
Lighting
Daytime running lamp mode
Turn the exterior lamp switch to
positionM orU.
When the engine is running, the low
beam headlamps are switched on.
In low ambient light conditions, the
following lamps will switch on
additionally:

Tail and parking lamps

License plate lamps

Side marker lamps
Canada only:
The daytime running lamp mode is
mandatory and therefore in a constant
mode.Vehicles with automatic transmission*:
When the engine is running, and you shift
from a driving position to positionN orP,
the low beam headlamps will switch off
with a three-minute delay.
When the engine is running, and you

turn the exterior lamp switch to
positionC, the parking lamps and
the side marker lamps switch on
additionally.

turn the exterior lamp switch to
positionB, the manual headlamp
mode has priority over the daytime
running lamp mode.
The corresponding exterior lamps
switch on (
page 109).USA only:
By default, the daytime running lamp mode
is deactivated. Activate the daytime
running lamp mode using the control
system, see “Setting daytime running lamp
mode (USA only)” (
page 139).
When the engine is running, and you turn
the exterior lamp switch to positionC
orB, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 109).
iWith the daytime running lamp mode
activated and the engine running, you cannot
switch off the low beam headlamps manually.
iWith the exterior lamp switch in
positionM or U, you cannot switch on the
high beam headlamps.
The high beam flasher is available at all times.
For nighttime driving turn the exterior lamp
switch to positionB to permit activation of
the high beam headlamps.
iWith the daytime running lamp mode
activated and the exterior lamp switch in
positionM, you cannot switch on the high
beam headlamps.
The high beam flasher is available at all times.
For nighttime driving turn the exterior lamp
switch to positionB or U to permit
activation of the high beam headlamps.

113 Controls in detail
Lighting
Combination switch
Combination switch
1High beam
2High beam flasher
High beam
Turn the exterior lamp switch to
positionB (
page 109).
Push the combination switch in
direction of arrow1 to switch on the
high beam.
The high beam headlamp indicator
lampA in the instrument cluster
comes on (
page 24).
Pull the combination switch in direction
of arrow2 to its original position to
switch off the high beam.
The high beam headlamp indicator
lampA in the instrument cluster
goes out.
High beam flasher
Pull the combination switch briefly in
direction of arrow2.
Corner-illuminating front fog lamps*
(C 230 (Canada only), C 280, C 350 and
models with 4MATIC: with Bi-Xenon*
headlamps)
The corner-illuminating front fog lamps
improve illumination of the area in the
direction into which you are turning.The corner-illuminating front fog lamps will
operate with the engine running and with

the exterior lamp switch in
positionB (
page 109)
or

the exterior lamp switch in
positionU (
page 109)
or

the daytime running lamp mode
activated (
page 111)
iWith the automatic headlamp mode activat-
ed: The corner-illuminating front fog lamps will
only come on in low ambient lighting conditions.
iIf you are driving faster than 25 mph
(40 km/h) or have the front fog lamps switched
on, the corner-illuminating front fog lamps
function is not available.

116 Controls in detail
Lighting
Interior lighting
The controls are located in the overhead
control panel.
1Rear interior lighting on/off
2Right front reading lamp on/off
3Rocker switch for automatic control
system
4Left front reading lamp on/offDeactivating automatic control
Press the= symbol on rocker
switch3.
The interior lighting remains switched
off in darkness, even when you

unlock the vehicle

remove the SmartKey from the
starter switch

open a door

open the trunkActivating automatic control
Press rocker switch3 to center
position.
The interior lighting switch on in
darkness, when you

unlock the vehicle

remove the SmartKey from the
starter switch

open a door

open the trunk
The interior lighting switches off after ap-
proximately 10 seconds, see “Setting inte-
rior lighting delayed shut-off”
(
page 142).
!An interior lamp switched on manually does
not go out automatically.
Leaving an interior lamp switch in the ON posi-
tion for extended periods of time with the engine
turned off could result in a discharged battery.
iThe interior lighting is factory-set to auto-
matic mode.
iIf a door remains open, the interior lighting
switches off automatically after approximately
5minutes.

119 Controls in detail
Instrument cluster
Coolant temperature gauge
The coolant temperature gauge is on the
left side in the instrument cluster
(
page 24).
Resetting trip odometer
Make sure you are viewing the trip
odometer and main odometer in the
multifunction display (
page 121).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel (
page 122) until the trip
odometer appears in the multifunction
display.
Press and hold the reset button in the
instrument cluster (
page 118) until
the trip odometer is reset.
Warning!G

Driving when your engine is badly
overheated can cause some fluids which
may have leaked into the engine
compartment to catch fire. You could be
seriously burned.

Steam from an overheated engine can
cause serious burns and can occur just
by opening the hood. Stay away from
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.
!Excessive coolant temperature triggers a
warning in the multifunction display
(
page 346).
The engine should not be operated with the cool-
ant temperature above 248°F (120°C). Doing so
may cause serious engine damage which is not
covered by the Mercedes-Benz Limited Warran-
ty.
iDuring severe operating conditions, e.g.
stop-and-go traffic, the coolant temperature may
rise close to 248°F (120°C).