Page 26 of 434
25 At a glance
Center console
Center console
Upper part
Item
Page
1
Central locking switch
105
2
Hazard warning flasher 
on/off switch
121
3
Central unlocking switch
106
4
Center and side air vent ad-
justment
170
5
COMAND system, see sep-
arate operating instruc-
tions
130
6
Automatic climate control
172
7
Right cup holder
214
8
KEYLESS-GO* start/stop 
button
33
9
Ashtray
Cigarette lighter
219
219
a
Left cup holder
214 
     
        
        Page 33 of 434

32 Getting startedUnlockingUnlocking with KEYLESS-GO*
If your vehicle is equipped with the 
KEYLESS-GO function, your vehicle checks 
whether the SmartKey with KEYLESS-GO is 
valid when you grasp the door handle. If 
your SmartKey with KEYLESS-GO is valid, 
the doors will unlock and you can open 
them.
The function of the SmartKey overrules the 
KEYLESS-GO function.
Grasp the door handle.
The turn signal lamps flash once. The 
locking knobs on the doors move up.
The SBC brake system is activated.
If the SmartKey with KEYLESS-GO is inside 
the vehicle, pressing the KEYLESS-GO 
start/stop button on the gear selector le-
ver corresponds to turning the SmartKey 
to the various starter switch positions.iTo unlock the vehicle, the SmartKey 
with KEYLESS-GO must be outside the 
vehicle, no further than approx. 3 feet 
(1 meter) away from the door. 
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take the 
SmartKey with KEYLESS-GO* with you and 
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an 
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident 
and/or serious personal injury. 
     
        
        Page 34 of 434

33 Getting started
Unlocking
1KEYLESS-GO start/stop button
Before you press the KEYLESS-GO 
start/stop button, the vehicle’s on-board 
electronics have the status0 (as with 
SmartKey removed).
The SmartKey with KEYLESS-GO must be 
located in the vehicle.
Make sure the gear selector lever is set 
toP.
Do not depress the brake pedal.Position 1
Press the KEYLESS-GO start/stop but-
ton once.
This supplies power to some electrical 
consumers, such as seat adjustment.Ignition (or Position 2)
Press the KEYLESS-GO start/stop but-
ton twice.
This supplies power to all electrical 
consumers. All lamps in the instrument 
cluster come on.
For more information, see “SmartKey with 
KEYLESS-GO*” (
page 93).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button, 
see “Starting with KEYLESS-GO*” 
(
page 44).
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 sup-
ply is again switched off. 
     
        
        Page 45 of 434

44 Getting startedDrivingStarting with KEYLESS-GO*
You can start your vehicle without the 
SmartKey in the starter switch using the 
KEYLESS-GO start/stop button on the 
gear selector lever.
1KEYLESS-GO start/stop button
Make sure the gear selector lever is set 
to P. 
Depress the brake pedal during the 
starting procedure. Do not depress ac-
celerator.
The selector lever lock is released.
Press KEYLESS-GO start/stop 
button1 once.
The engine starts automatically if the 
SmartKey with KEYLESS-GO is in the 
vehicle.
For information on turning off the engine 
with KEYLESS-GO, see “Turning off with 
KEYLESS-GO*” (
page 54).
Starting difficulties
If the engine does not start as described, 
carry out the following steps:
If you are starting the engine with the 
SmartKey: Turn SmartKey in starter 
switch to position0 and repeat starting 
procedure.
If you are starting the engine with 
KEYLESS-GO*: Close any doors that 
may be open to allow for better detec-
tion of the SmartKey with 
KEYLESS-GO.
Or:
Start the engine with the SmartKey as 
radio signals from another source may 
be interfering with the SmartKey with 
KEYLESS-GO*.
Repeat the starting procedure 
(page 43). Remember that extended 
starting attempts can drain the battery.
Get a jump start (
page 363).
If the engine does not start after several 
starting attempts, there could be a mal-
function in the engine electronics or in the 
fuel supply system.
Notify an authorized Mercedes-Benz 
Center. 
     
        
        Page 46 of 434

45 Getting started
Driving
Parking brake
1Parking brake
2Parking brake release handle
Release the parking brake by pulling on 
handle2.
The indicator lamp ; (USA only) or 
3 (Canada only) in the 
speedometer goes out. 
Driving
Depress the brake pedal.
Place the gear selector lever in 
positionD orR.
Release the brake pedal.
Carefully depress the accelerator 
pedal.
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch, take the 
SmartKey with KEYLESS-GO* with you and 
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an 
unlocked vehicle. Children could release the 
parking brake, which could result in an acci-
dent and/or serious injury.
Warning!
G
It is dangerous to shift the gear selector le-
ver out ofP orN if the engine speed is high-
er than idle speed. If your foot is not firmly 
on the brake pedal, the vehicle could accel-
erate quickly forward or in reverse. You 
could lose control of the vehicle and hit 
someone or something. Only shift into gear 
when the engine is idling normally and when 
your right foot is firmly on the brake pedal.
Warning!
G
On slippery road surfaces, never downshift 
in order to obtain braking action. This could 
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.!In order to avoid damage to the trans-
mission:
Wait for the gear selection process 
to complete before setting the vehi-
cle in motion.
Place the gear selector lever in 
positionR only when the vehicle is 
stopped. 
     
        
        Page 50 of 434

49 Getting started
Driving
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 anything blocks the windshield wiper 
(leaves, snow, etc.), switch them off im-
mediately.
For safety reasons,
turn off the engine by turning 
the SmartKey to position 0 and 
withdraw the SmartKey from 
the starter switch
or
turn off the engine by pressing 
the KEYLESS-GO* start/stop 
button and open the driver’s 
door (with the driver’s door 
open, the starter switch is in po-
sition 0, same as with the 
SmartKey removed from the 
starter switch)
before attempting to remove any 
blockage.
Remove blockage.
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 51 of 434
50 Getting startedDrivingThe coolant temperature gauge is 
above 248°F (120°C)
The coolant is too hot and is no longer 
cooling the engine.
Stop the vehicle as soon as possible 
and turn off the engine. Allow engine 
and coolant to cool.
Check the coolant level and add cool-
ant if necessary (
page 258).In case of accident
If the vehicle is leaking gasoline:
Do not start the engine under any cir-
cumstances.
Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:
Notify an authorized Mercedes-Benz 
Center.
If no damage can be determined on the
major assemblies
fuel system
engine mount:
Start the engine in the usual manner. 
     
        
        Page 52 of 434

51 Getting started
Parking and locking
Parking and locking
You have now completed your first drive. 
You have properly stopped and parked 
your vehicle. End your drive as follows:Warning!
G
Wait until the vehicle is stationary before re-
moving the SmartKey from the starter 
switch. The vehicle cannot be steered when 
the SmartKey is removed.Warning!
G
With the engine not running, there is no 
power assistance for the brake and steering 
systems. In this case, it is important to keep 
in mind that a considerably higher degree of 
effort is necessary to brake and steer the ve-
hicle.
Warning!
G
Do not park this vehicle in areas where com-
bustible materials such as grass, hay or 
leaves can come into contact with the hot 
exhaust system, as these materials could be 
ignited and cause a vehicle fire.
To reduce the risk of personal injury as a re-
sult of vehicle movement, before
 turning off 
the engine and leaving the vehicle always:
Keep right foot on brake pedal.
Firmly depress parking brake pedal.
Move the gear selector lever to 
positionP.
Slowly release brake pedal.
When parked on an incline, turn front 
wheels towards the road curb.
Turn the SmartKey to starter switch 
position0 and remove, or press 
start / stop button (vehicles with 
KEYLESS-GO*).
Take the SmartKey or the SmartKey with 
KEYLESS-GO* and lock vehicle when 
leaving.