ContentsSafety and Security........................... 59
Occupant safety................................... 60
Air bags .......................................... 61
Seat belts ....................................... 67
Roll bars ......................................... 71
Children in the vehicle .................... 72
Blocking of rear side
window operation ........................... 82
Panic alarm .......................................... 83
Activating ....................................... 83
Deactivating ................................... 83
Driving safety systems ......................... 84
ABS ................................................ 84
BAS ................................................ 85
ESP ................................................. 86
Anti-theft systems................................ 89
Immobilizer..................................... 89
Anti-theft alarm system .................. 89
Tow-away alarm ............................. 91
Controls in detail............................... 93
Locking and unlocking ......................... 94
SmartKey ....................................... 94
SmartKey with KEYLESS-GO* ........ 98
Opening the doors
from the inside ............................. 105
Opening the trunk ........................ 106
Closing the trunk.......................... 107
Trunk lid emergency release ........ 109
Automatic central locking ............ 110
Locking and unlocking
from the inside ............................. 110
Seats ................................................. 112
Easy-entry/exit feature ................ 112
Removing and installing
front seat head restraints............. 113
Rear seat head restraints ............. 114
Multicontour seat* ....................... 116
Seat heating* ............................... 117
Seat ventilation* .......................... 118Memory function ............................... 119
Storing positions into memory ..... 120
Recalling positions from memory . 120
Storing exterior rear view
mirror parking position ................ 121
Lighting ............................................. 122
Exterior lamp switch .................... 122
Combination switch ..................... 126
Cornering fog lamps*
(CLK 320 with
Bi-Xenon* headlamps) ................. 126
Hazard warning flasher ................ 127
Interior lighting ............................ 128
Door entry lamps ......................... 129
Trunk lamp ................................... 129
Instrument cluster ............................. 130
Instrument cluster illumination .... 130
Coolant temperature indicator ..... 131
Trip odometer .............................. 131
Tachometer .................................. 132
Outside temperature indicator ..... 132
122 Controls in detailLightingFor information on how to switch on the
headlamps and use the turn signals, see
“Switching on headlamps” (
page 50)
and “Turn signals” (
page 51).
Exterior lamp switch
The exterior lamp switch is located on the
dashboard to the left of the steering wheel.Exterior lamp switch
MOff
Daytime running lamp mode
(
page 152)
UAutomatic headlamp mode
Daytime running lamp mode
(page 152)
CParking lamps (also tail lamps,
license plate lamps, side marker
lamps, instrument panel lamps)
BLow beam headlamps (or high
beam headlamps when the combi-
nation switch is pushed forward)
and parking lamps
ˆStanding 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 in which the vehicle is reg-
istered, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained
at an authorized Mercedes-Benz
Center.
123 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.
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
positionU.
With the SmartKey in starter switch
position1 or the KEYLESS-GO*
start/stop button pressed once, 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 or the engine turned off
with KEYLESS-GO* and the driver’s
door open, a warning sounds if the
parking lamps or low beam headlamps
are switched on.
The message
Turn off lamps!
appears
in the multifunction display.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly 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 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
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.
125 Controls in detail
Lighting
Fog lamps
Front fog lamps
Switch on the low beam headlamps
(page 50).
Pull out the exterior lamp switch to first
stop.
The front fog lamps switch on.
The green indicator lamp‡ in the
exterior lamp switch comes on
(page 122).
Push in the exterior lamp switch.
The front fog lamps switch off.
The green indicator lamp‡ in the
exterior lamp switch goes out.Rear fog lamp (driver’s side only)
Switch on the front fog lamps
(page 125).
Pull out the exterior lamp switch to
second stop.
The rear fog lamp switches on.
The yellow indicator lamp† in the
exterior lamp switch comes on
(page 122).
Push in the exterior lamp switch to first
stop.
The rear fog lamp switches off.
The yellow indicator lamp† in the
exterior lamp switch goes out.
The front fog lamps remain lit.
Warning!
G
In low ambient lighting or foggy conditions,
only switch from position U to B with
the vehicle at a standstill. Switching
fromU to B will briefly switch off the
headlamps. Doing so while driving in low
ambient lighting conditions may result in an
accident.iFog lamps will operate with the parking
lamps and/or the low beam headlamps
on. Fog lamps should only be used in
conjunction with low beam headlamps.
Consult your State or Province Motor
Vehicle Regulations regarding permis-
sible lamp operation.
iFog lamps cannot be switched on with
the exterior lamp switch in
positionU. For switching on the fog
lamps, turn the exterior lamp switch to
positionB first.
126 Controls in detailLightingCombination switch
The combination switch is located on the
left of the steering column.Combination switch1High beam
2High beam flasherHigh beam
Turn the exterior lamp switch to
positionB orU (
page 122).
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.Cornering fog lamps* (CLK 320 with
Bi-Xenon* headlamps)
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
positionB (
page 122)
or
the exterior lamp switch in
positionU (
page 122)
or
the daytime running lamp mode
activated (
page 124)
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).
127 Controls in detail
Lighting
Driving forward
Switching on cornering fog lamps
Depending on whether you are turning
left or right, switch on the left or right
turn signal (
page 51).
The respective front fog lamp comes on
and illuminates the road into which you
are turning.
Switching off cornering fog lamps
The combination switch for the turn signal
resets automatically after major steering
wheel movements. This will switch off thecornering fog lamps if they where
activated 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 cornering
fog lamps can be switched off by returning
the combination switch to its original
position.
Driving rearward
Switching on cornering fog lamps
Place the gear selector lever in
positionR.
The inverse front fog lamp comes on
automatically depending on the steer-
ing direction and steering angle.
Switching on cornering fog lamps
Place the gear selector lever out of
positionR.
The respective front fog lamp goes out.
Hazard warning flasher
The hazard warning flasher can be
switched on at all times, even with the
SmartKey or the SmartKey with
KELESS-GO* removed from the starter
switch or with the SmartKey with
KEYLESS-GO* removed from the vehicle.
The hazard warning flasher switches on
automatically when an air bag deploys.
The hazard warning flasher switch is
located on the upper part of the center
console.
1Hazard warning flasher switch
iThe cornering fog lamps will come on
automatically depending on the
steering angle, even if you did not
switch on either turn signal.
If the cornering fog lamps came on
automatically, they will also go out au-
tomatically depending on the steering
angle.
153 Controls in detail
Control system
Setting locator lighting
With the locator lighting feature activated
and the exterior lamp switch in
positionU, the following lamps will
switch on when the vehicle is unlocked
with the SmartKey during darkness:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
The locator lighting switches off when the
driver’s door is opened.
If you do not open a door after unlocking
with the SmartKey the lamps will switch off
automatically after approximately
40 seconds.
To activate locator lighting:
Make sure the function surround light-
ing is set to
on, see (
page 153).
Move the selection marker with
buttonæ orç to the
Lighting
submenu.
Press buttonj ork repeatedly
until the message
Function Surround
lighting
appears in the multifunction
display.
The selection marker is on the current
setting.
Press buttonæ orç to switch
the locator lighting function
On.
Turn the exterior lamp switch to
position U when exiting the vehicle
(page 122).
The locator lighting feature is
activated.Setting night security illumination
(Headlamps delayed shut-off)
Use this function to set whether and how
long you would like the exterior lamps to
illuminate during darkness after exiting the
vehicle and all doors closed.
With the delayed shut-off feature activated
and the exterior lamp switch in
positionU before the engine is turned
off, the following lamps will switch on after
you have removed the SmartKey from the
starter switch:
Parking lamps
Tail lamps
License plate lamps
Side marker lamps
Front fog lamps
If you do not open a door after removing
the SmartKey from the starter switch, the
lamps will switch off automatically after
approximately 60 seconds.
414 Practical hintsReplacing bulbsSafe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp
assemblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Center for headlamp ad-
justment.
Bulbs Front lamps
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a
distance with the lights on should clear
up the fogging.iBack-up bulbs will be brought into use
when lamps malfunction. Observe the
messages in the multifunction display
(page 383).
Lamp
Type
1
Additional turn signal
lamp
LED
2
Turn signal lamp
1156 NA
3
Halogen headlamp:
Low beam
Bi-Xenon* headlamp:
Low and high beam
1
1Vehicles with Bi-Xenon headlamps* do not replace
the Bi-Xenon bulbs yourself.
H7 (55 W)
D2S-35 W
4
Halogen headlamp:
High beam/high beam
flasher
Bi-Xenon* headlamp:
High beam flasher
H7 (55 W)
H7 (55 W)
Parking and standing
lamp
W 5 W
5
Front fog lamp
Front fog lamp with
cornering fog lamp*
HB4 (51 W)
H7 (55 W)
6
Side marker lamp
W 5 W