2007 MERCEDES-BENZ CL-CLASS engine

336 Controls in detail
Starter switch positions
SmartKey
Starter switch
0For removing SmartKey
1Power supply for some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position.
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 566).
3Starting position
For information on starting the engine us-
ing the SmartKey, see “Starting with the
SmartKey” (
page 379).
Warning!G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
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.
!If you turn off the engine using the
SmartKey and

remove the SmartKey from the starter
switch
or

open a door
the transmission will shift to park positionP
automatically.
Keep in mind that turning off the engine with the
SmartKey alone only will automatically shift the
transmission to neutral positionN.
!If the SmartKey cannot be turned in the
starter switch, the battery may not be sufficient-
ly charged.

Check the battery and charge it if necessary
(
page 655).

Get a jump start (page 660).
To prevent accelerated battery discharge or a
completely discharged battery, always remove
the SmartKey from the starter switch when the
engine is not in operation.
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337 Controls in detail
Starter switch positions
SmartKey with KEYLESS-GO*
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 338)

with the brake pedal firmly depressed
will start the engine (
page 379)
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).The SmartKey with KEYLESS-GO must be
located in the vehicle.
Make sure the automatic transmission
is set toP.
Do not depress the brake pedal.
KEYLESS-GO start/stop button
1USA only
2Canada onlyiThe 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
S m a r t K e y w i t h K E Y L E S S - G O i s i n t h e v e h i c l e , t h e
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.
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338 Controls in detail
Starter switch positions
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 566).For information on starting the engine us-
ing the KEYLESS-GO start/stop button,
see “Starting with KEYLESS-GO*”
(
page 379).
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.
!If you turn off the engine using the
KEYLESS-GO start/stop button and open the
driver’s or passenger door, the transmission will
shift to park positionP automatically.
Keep in mind that turning off the engine using
the KEYLESS-GO start/stop button alone only
will automatically shift the transmission to
neutral positionN.
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345 Controls in detail
Seats
With the easy-entry/exit feature activated
the steering wheel tilts upwards and the
driver’s seat moves a few inches to the
rear when you:

remove the SmartKey from the starter
switch,
or

open the driver’s door with the
SmartKey in starter switch position 0
or 1 or the KEYLESS-GO* start/stop
button (
page 337) in position 1
iFor safety reasons, the driver’s seat will not
return to its last set position with the easy-en-
try/exit feature activated if the system recogniz-
es the last set position as an extreme forward
position. Instead, the driver’s seat will remain at
or move to a factory-set maximum forward posi-
tion. To again fully return the driver’s seat to your
last set position or to memory position, adjust
the seat to the desired position or press and hold
the respective memory position button
(
page 358).
iThe last set driver’s seat and steering wheel
positions are stored when

the ignition is switched off (page 336)

the position is stored in memory
(
page 357)
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.
If the current seat position falls into a factory-set
position range and the system recognizes the
current seat position to be rearward enough for
easy entry and exit, the driver’s seat will not
move to the rear when the easy-entry/ exit fea-
ture is activated.
The adjustment procedure is briefly interrupted
when the engine is started.
Warning!G
Let the system complete the adjustment
procedure before setting the vehicle in mo-
tion. All driver’s seat and steering wheel ad-
justments must be completed before setting
the vehicle in motion. Driving off with the
driver’s seat/steering wheel still adjusting
could cause the driver to lose control of the
vehicle.
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364 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.
Switching on low beam headlamps
Turn the exterior lamp switch toB.
The green indicator lampC in the
exterior lamp switch comes on.
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 *.
With the SmartKey in starter switch po-
sition 1 or the KEYLESS-GO*
start/stop button pressed once, only
the parking lamps and the side marker
lamps will switch on and off automati-
cally.
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 to*,

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 * to B with the
vehicle at a standstill in a safe location.
Switching from * to B 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.
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365 Controls in detail
Lighting
Daytime running lamp mode
Turn exterior lamp switch to
positionM or*.
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
Canada only
The daytime running lamp mode is manda-
tory and therefore in a constant mode.When the engine is running, and you shift
from a driving position to positionN orP,
the low beam headlamps will switch off
with a 3-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 addi-
tionally.

turn the exterior lamp switch to
positionB, the manual headlamp
mode has priority over the daytime run-
ning lamp mode.
The corresponding exterior lamps
switch on (
page 363).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 271).
When the engine is running, and you turn
the exterior lamp switch to position C
orB, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 363).
iWith the daytime running lamp mode activat-
ed and the engine running, the low beam head-
lamps cannot be switched off manually.
iWith the exterior lamp switch in position
M or *, you cannot switch on the high
beam headlamps.
The high beam flasher is available at all times.
For nighttime driving you should turn the exterior
lamp switch to positionB to permit activa-
tion of the high beam headlamps.
iWith the daytime running lamp mode
activated and the exterior lamp switch in
position M, you cannot switch on the high
beam headlamps.
The high beam flasher is available at all times.
For nighttime driving you should turn the exterior
lamp switch to positionB or * to permit
activation of the high beam headlamps.
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367 Controls in detail
Lighting
Switching on high beams
Combination switch
1High beam
2High beam flasher
Turn the exterior lamp switch to
positionB (
page 363).
Push the combination switch in the di-
rection of arrow1.
The high beam indicatorA in the in-
strument cluster comes on
(
page 30).
High beam flasher: Pull the combina-
tion switch briefly in the direction of
arrow2.
Headlamp cleaning system
1Headlamp washer button
Switch on the ignition (page 336).
Press button1 up or down.
The headlamps are cleaned with a
high-pressure water jet.For information on filling up the washer
reservoir, see “Windshield washer system
and headlamp cleaning system”
(page 519).
iThe headlamps are automatically cleaned
when, at the same time,

the engine is running

the headlamps are switched on

the windshield wipers have wiped the wind-
shield with washer fluid fifteen times
When you switch off the ignition or press
button1, the automatic function is reset and
will start counting the next time from the begin-
ning.
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368 Controls in detail
Lighting
Corner-illuminating lamps
The corner-illuminating lamps improve illu-
mination of the area in the direction into
which you are turning.
The corner-illuminating lamps will operate
with the engine running and with:

the exterior lamp switch in
positionB or* (
page 363)
or

the daytime running lamp mode acti-
vated (
page 365).
Switching on corner-illuminating lamps
Switch on the left or right turn signal
(
page 363), depending on whether
you are turning left or right.or
Turn steering wheel in desired direc-
tion.
The corner-illuminating lamp on the
side of your steering direction comes
on.Switching off the corner-illuminating
lamps
The combination switch for the turn signal
resets automatically after major steering
wheel movements. This will switch off the
corner-illuminating lamps if they were acti-
vated by switching on the left or right turn
signal.
If the turn signal should stay on after mak-
ing the turn, the turn signal and corner-illu-
minating lamp can be switched off by
returning the combination switch to its
original position.
iWith the automatic headlamp mode activat-
ed: The corner-illuminating lamps will only come
on in low ambient lighting conditions.
iIf you are driving faster than 43 mph
(70 km/h), the corner-illuminating function is
not available.
iIf you have switched on the turn signal for
one side but turn the steering wheel in the other
direction, the corner-illuminating lamp comes on
for the side indicated by the turn signal.
iThe corner-illuminating lamps temporarily
come on, on both sides of the vehicle if you turn
the steering wheel in one direction and then in
the other direction shortly thereafter.
iThe corner-illuminating lamps will come on
automatically depending on the steering angle,
even if you did not switch on either turn signal. If
the corner-illuminating lamps came on automat-
ically, they will also go out automatically depend-
ing on the steering angle.
iWhen you shift the automatic transmission
in reverse gearR, the corner-illuminating lamp
opposite to your steering direction comes on.
The turn signal has no influence on the corner-il-
luminating lamp on the outside of the curve.
iIf you are driving faster than 43 mph
(70 km/h) when activating the turn signal indica-
tor, the corner-illuminating lamp function is
switched off.
iThe corner-illuminating lamp may remain lit
for a short time. The corner-illuminating lamp
comes on for no more than 20 seconds with the
vehicle standing still. It is then switched off even
if the turn signal is still switched on or you have
turned the steering wheel to full lock.
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