Page 31 of 376

31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing key
The steering is locked when the key is 
removed from the starter switch. If 
necessary, move steering wheel slight-
ly to allow the locking mechanism to 
engage.
1Power supply to some electrical 
consumers, such as seat adjustment
2Ignition (power supply for all electrical 
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch and lock 
the vehicle. Do not leave children unattend-
ed in the vehicle, or with access to an un-
locked vehicle. Unsupervised use of vehicle 
equipment may cause an accident and/or 
serious personal injury.iVehicles with automatic transmission: 
The SmartKey can only be removed 
from the starter switch with the gear 
selector lever in positionP.
!If the key is left in starter switch 
position0 for an extended period of 
time, it can no longer be turned in the 
starter switch.
Remove the key from the starter 
switch and reinsert.
If the key can still not be turned, the 
battery may not be sufficiently 
charged.
Check the battery and charge it if 
necessary (
page 240).
Get a jump start (
page 306).
To prevent accelerated battery dis-
charge and a possible dead battery, al-
ways remove the key from the starter 
switch. 
         
        
        
     
        
        Page 49 of 376

49 Getting started
Driving
Single wipe
Press switch briefly in the direction of 
arrow1.
The windshield wipers wipe one time 
without washer fluid.
Wiping with windshield washer fluid
Press switch in the direction of arrow1 
past the resistance point.
The windshield wiper operates with 
washer fluid.
Information on filling up the washer reser-
voir can be found in the “Operation” sec-
tion (page 241).
Problems while driving
The engine runs erratically and misfires
An ignition cable may be damaged.
The engine electronics may not be op-
erating properly.
Unburned gasoline may have entered 
the catalytic converter and damaged it.
Give very little gas.
Have the problem repaired by an au-
thorized Mercedes-Benz Center as 
soon as possible.
!If leaves, snow, etc. block the wind-
shield wipers, switch off the wipers.
For safety reasons, withdraw key 
from starter switch. Remove block-
age.
Turn the windshield wipers on 
again.
If windshield wipers fail to function at 
all in switch positionI,
set the combination switch to the 
next highest wiper speed.
have the windshield wipers 
checked at the nearest authorized 
Mercedes-Benz Center. 
         
        
        
     
        
        Page 91 of 376

91 Controls in detail
Locking and unlocking
Separately unlocking the trunk
Pull the mechanical key out of the 
SmartKey (
page 285).
Insert the mechanical key in the trunk 
lid lock.
Turn the key completely to the left to 
position1, see above.
You can now open the trunk (
page 88).
Automatic central locking
The doors and the trunk automatically lock 
when the ignition is switched on and the 
wheels are turning at vehicle speeds of ap-
proximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are 
safe to do so.
You can deactivate the automatic locking 
using the control system (
page 129).
iUnlocking the trunk with the mechani-
cal key will trigger the anti-theft alarm 
system. To cancel the alarm, do one of 
the following:
Press button
Œ 
or
‹ 
on the 
SmartKey.
Insert the SmartKey in the starter 
switch.
iThe doors unlock automatically after an 
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when 
the ignition is switched on and the 
wheels are turning at vehicle speeds of 
approximately 9 mph (15 km/h) or 
more. You could therefore lock yourself 
out when the vehicle
is pushed
is on a test stand 
         
        
        
     
        
        Page 96 of 376

96 Controls in detailSeatsMulticontour seat*
Some models may be equipped with driv-
er’s multicontour seat. This seat has a 
movable seat cushion and inflatable air 
cushions built into the backrest to provide 
additional lumbar and side support.
The seat cushion movement, backrest 
cushion height and curvature can be con-
tinuously varied with regulators on the 
right side of the seat after turning the 
SmartKey in the starter switch to 
position2.1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustment
Adjusting the multicontour seat in the or-
der listed above is recommended.
Check that the ignition is switched on.
All lamps in the instrument cluster light 
up.The seat cushion movement, backrest 
cushion height and curvature can be con-
tinuously varied with regulators1, 2 and3.
The side bolsters of the backrest can be 
adjusted with rocker switch4.
Press to the left.
Side support will be increased.
Press to the right.
Side support will be decreased.iWhen the engine is turned off, the last 
cushion setting is retained in memory, 
and the cushion is automatically ad-
justed to this setting when the engine 
is restarted. 
         
        
        
     
        
        Page 99 of 376

99 Controls in detail
Memory function*
The memory button and stored position 
button are located on the door.
1Memory button
2Stored position button
Make sure that the ignition is switched 
on or the relevant door is open and the 
SmartKey is inserted in the starter 
switch.
Storing positions into memory
Adjust the seats, steering wheel and 
rear view mirrors to the desired posi-
tion (
page 32).
Turn button2 to selected memory po-
sition.
Press memory button1.
Release memory button and push 
button2 within three seconds.
All the settings are stored at the select-
ed position.
Recalling positions from memory
Turn button2 to selected memory po-
sition.
Press and hold button2 until the seat, 
steering wheel and rear view mirrors 
have fully moved to the stored posi-
tions.iReleasing the button immediately 
stops movement to the stored posi-
tions.Warning!
G
Do not operate the power seats using the 
memory button if the seat backrest is in an 
excessively reclined position. Doing so 
could cause damage to front or rear seats.
First move backrest to an upright position. 
         
        
        
     
        
        Page 100 of 376

100 Controls in detailMemory function*Storing exterior rear view mirror parking position
For easier parking, you can adjust the 
passenger-side exterior rear view mirror so 
that you can see the right rear wheel as 
soon as you engage reverse gearR.
You can store a parking position for the 
passenger exterior rear view mirror for 
each key using the memory button.
For information about activating the 
parking position, see “Activating exterior 
rear view mirror parking position” 
(page 145).1Memory button
2Adjustment button
3Passenger side exterior rear view 
mirror
Stop the vehicle.
Switch ignition on (if not already on).
Press button3.
The passenger side exterior rear view 
mirror is selected.
Adjust the exterior rear view mirror 
with button2 so that you see the rear 
wheel and the road curb.
Press memory button “M”1 on the 
door.
Within three seconds press bottom of 
adjustment button2 above the exterior 
lamp switch.
The parking position is stored if the 
mirror does not move.iIf the mirror does move, repeat the 
above steps. After the setting is stored 
you can move the mirror again. 
         
        
        
     
        
        Page 104 of 376

104 Controls in detailLightingCombination switch
The combination switch is located on the 
left side of the steering column.
1High beam
2High beam flasher
Switching on high beams
Turn exterior lamp switch to 
position
B
 or to
U
 
(
page 101).
Push the combination switch in 
direction1.
The high beam symbol is illuminated on 
the instrument cluster.High beam flasher
Pull the combination switch briefly in 
direction2.
Hazard warning flasher
The hazard warning flasher can be activat-
ed with the ignition switched on or off. It is 
activated automatically when an airbag is 
deployed.
The switch is located on the center con-
sole.
1Hazard warning flasher switchSwitching on the hazard warning 
flasher
Press the hazard warning flasher 
switch.
All turn signals will blink.
Switching off the hazard warning 
flasher
Press hazard warning flasher switch 
again.iWith the hazard warning flasher acti-
vated and the combination switch set 
for either left or right turn, only the re-
spective left or right turn signals will 
operate when the key in the starter 
switch is in position1 or2. 
         
        
        
     
        
        Page 168 of 376

168 Controls in detailAudio systemButton and soft key operation
In these instructions, the alpha-numeric 
keypad (right side of radio face) and the 
function buttons (left side of the radio 
face) are referred to as “buttons” and the 
four keys under the display are referred to 
as “soft keys”.Operation
Switching on/off
Switching on:
Turn the key to position1 or2 in the 
starter switch.
or
Turn control knob
a
.Switching off:
Remove the key from the starter 
switch.
or
Turn control knob
a
.
Adjusting the volume
Turn control knob
a
.
The volume will increase or decrease 
according to the direction turned.Adjusting audio functions
In radio, cassette and CD mode, press 
the AUD key to call up the bass, treble, 
balance and fader functions.
Settings for bass and treble are stored sep-
arately for the AM (medium wave, long 
wave, short wave) and FM (ultra-short 
wave) frequency bands, cassette mode 
and CD mode.
iDo not press directly on the radio dis-
play face.
iIf the radio is turned on without the key 
in the ignition, it will automatically turn 
off again after approx. 30 minutes.
iIf your vehicle was equipped with a 
telephone* and voice control system*, 
and both are connected to the car 
radio, their volume can be adjusted 
separately while the telephone* is 
being used or voice control system* is 
activated.