2005 MERCEDES-BENZ C CLASS COUPE engine

84 Safety and SecurityDriving safety systemsFor more information, see “Practical hints”
(page 343).Switching off the ESP
To improve the vehicle’s traction, turn off
the ESP in driving situations where it would
be advantageous to have drive wheels spin
and thus cut into surfaces for better grip
such as:


starting out on slippery surfaces and in
deep snow in conjunction with snow
chains


sand or gravelWhen you switch off the ESP


the ESP does not stabilize the vehicle


the engine output is not limited, which
allows the drive wheels to spin and
thus cut into surfaces for better grip


the traction control will still brake a
spinning wheel


the ESP continues to operate when you
are braking
!Because of the ESP’s automatic opera-
tion, the engine must be shut off
(SmartKey in starter switch position
0
or 1) when

the parking brake is being tested on
a brake test dynamometer


the vehicle is being towed with the
front axle raised
Active braking action through the ESP
may otherwise seriously damage the
rear axle brake system.
The ESP will only function properly if
you use wheels of the recommended
tire size.
Warning!
G
The ESP should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.!Turn on the ESP immediately if the
aforementioned circumstances do not
apply anymore.
iWhen the ESP is switched off and one
or more drive wheels are spinning, the
ESP warning lamp v in the speed-
ometer flashes. However, the ESP will
then not stabilize the vehicle.

86 Safety and SecurityAnti-theft systemsImmobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating

Remove the SmartKey from the starter
switch.
Deactivating


Switch on the ignition.
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 lid


the hood.
The alarm system will also be triggered
when


someone attempts to raise the vehicle
(page 87).


opening the vehicle with the
mechanical key. Arming the alarm system
The indicator lamp is in the switch for the
tow-away alarm* in the center console.
1 Indicator lamp
iStarting the engine will also deactivate
the immobilizer.
In case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).
iThe alarm system will rearm automati-
cally after approximately 40 seconds if
a door or the trunk lid is not opened.
iIf the alarm stays on for more than
30 seconds, a call to the Response
Center is initiated automatically by the
Tele Aid system* (
page 261) provid-
ed Tele Aid service was subscribed to
and properly activated, and that neces-
sary cellular service and GPS coverage
are available.

110 Controls in detailLightingFor more information on how to switch on
the headlamps and use the turn signals,
see “Switching on headlamps” (
page 51)
and “Turn signals”(
page 52).
Exterior lamp switch
The exterior lamp switch is located on the
dashboard to the left of the steering wheel.Exterior lamp switchM Off
Daytime running lamp mode
(
page 144)
U Automatic headlamp mode
Daytime running lamp mode
(page 144) C
Parking lamps (also side marker
lamps, tail lamps, license plate
lamps, instrument panel lamps)
Canada only: When engine is run-
ning, the low beam is also switched
on.
B Low beam headlamps (or high
beam headlamps when the combi-
nation switch pushed forward) and
parking lamps.
ˆ Standing lamps, right (turn left one
stop)
‚ Standing lamps, left (turn left two
stops)
‡ Indicator lamp for front fog lamps
† Indicator lamp for rear fog lamp
iIf you drive in countries where vehicles
drive on the other side of the road than
the country where the vehicle is regis-
tered, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained
at an authorized Mercedes-Benz
Center.

111
Controls in detail
Lighting
Manual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
exterior lamp switch.
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 exterior lamp switch to
position
U.
With the SmartKey in starter switch
position 1, only the parking 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.
iWith the SmartKey removed from the
starter switch and the driver’s door
open, while the parking lamps or low
beam headlamps are switched on,

a warning sounds


$ appears in the multifunction
display


the message
Switch off lights.

appears in the multifunction display
Warning!
G
If the exterior lamp switch is set to U,

the headlamps may switch off unexpect-
edly when the system senses bright am-
bient 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, acti-
vate headlamps by turning exterior lamp
switch to B when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from position U to B with the
vehicle at a standstill. Switching from U
to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
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.

112 Controls in detailLightingDaytime running lamp mode
Turn exterior lamp switch to
positionM orU .
When the engine is running, the low
beam headlamps are switched on.
In low ambient light conditions, the fol-
lowing lamps will switch on additional-
ly.

Tail and parking lamps


License plate lamps


Side marker lamps
For nighttime driving you should turn the
exterior lamp switch to position B to
permit activation of the high beam head-
lamps. Canada only
The daytime running lamp mode is manda-
tory and therefore in a constant mode.
Vehicles with automatic transmission*:
When the engine is running, and you shift
from a driving position to position
N or P,
the low beam headlamps will switch off
with a three-minute time delay.
When the engine is running, and you


turn the exterior lamp switch to
position C, the parking lamps
switch on additionally.


turn the exterior lamp switch to
position B, the manual headlamp
mode has priority over the daytime
running.
The corresponding exterior lamps
switch on (
page 110). USA only
By default, the daytime running lamp mode
is deactivated. Activate the daytime run-
ning lamp mode using the control system,
see “Setting daytime running lamp mode
(USA only)” (
page 144).
When the engine is running, and you turn
the exterior lamp switch to position C
or B , the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 110).
Locator lighting and night security
illumination
The locator lighting and night security illu-
mination are described in the control sys-
tem section, see “Setting locator lighting”
(
page 145) and “Headlamps delayed
shut off” (
page 146).
iWith the daytime running lamp mode
activated and the exterior lamp switch
in position M, the high beam head-
lamps cannot be switched on.

114 Controls in detailLightingCombination switch
The combination switch is located on the
left of the steering column.Combination switch1High beam
2 High beam flasher High beam

Turn exterior lamp switch to
position
B orU (
page 110).

Push the combination switch in direc-
tion of arrow 1 to switch on the high
beam.
The high beam headlamp indicator
lamp A in the instrument cluster
comes on (
page 24).

Pull the combination switch in direction
of arrow 2 to its original position to
switch off the high beam.
The high beam headlamp indicator
lamp A in the instrument cluster
goes out.
High beam flasher

Pull the combination switch briefly in
direction of arrow 2.
Cornering fog lamps*
The cornering fog lamps improve illumina-
tion of the road into which you are turning.
Cornering fog lamps will operate with the
engine running and with

the exterior lamp switch in
position B (
page 110)
or


the exterior lamp switch in
position U (
page 110)
or


the daytime running lamp mode
activated (
page 112)
iCornering fog lamps will only come on
in low ambient lighting conditions.
The cornering fog lamps function is not
available at a vehicle speed above
25 mph (40 km/h).

120 Controls in detailInstrument clusterCoolant temperature gauge
The coolant temperature gauge is on the
left side in the instrument cluster
(page 25).During severe operating conditions, e.g.
stop-and-go traffic, the coolant tempera-
ture may rise close to 248°F (120°C).
The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
engine damage which is not covered by the
Mercedes-Benz Limited Warranty.
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.

121
Controls in detail
Instrument cluster
Trip odometer
Make sure you are viewing the trip
odometer and main odometer in the
multifunction display (
page 123).

If it is not displayed, press button
è
or ÿ on the multifunction steering
wheel until the trip odometer appears
(page 124).

Press and hold the reset button in the
instrument cluster (
page 119) until
the trip odometer is reset.
Tachometer
The red marking on the tachometer
(page 24) denotes excessive engine
speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
Outside temperature indicator
!Avoid driving at excessive engine
speeds, as it may result in serious
engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.