Page 30 of 474
28 At a glanceCenter consoleLower part
Item
Page
1
KEYLESS-GO* start/stop 
button
35
2
Gear selector lever for 
automatic transmission
46
3
Front passenger front 
air bag off indicator lamp
73
4
Thumbwheel for setting 
distance in Distronic*
224
5
Distance warning func-
tion* on/off button
224
6
Lower storage compart-
ments
7
Program mode selector for 
automatic transmission
179 
         
        
        
     
        
        Page 37 of 474

35 Getting started
Unlocking
For information on starting the engine us-
ing the SmartKey, see “Starting with the 
SmartKey” (
page 46).SmartKey with KEYLESS-GO*
Pressing the KEYLESS-GO start/stop but-
ton on the gear selector lever corresponds 
to turning the SmartKey to the various 
starter switch positions.
If you firmly depress the brake pedal dur-
ing pressing KEYLESS-GO start/stop but-
ton, the engine starts automatically.
KEYLESS-GO start/stop button1USA only
2Canada only
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.
!If the SmartKey cannot be turned in the 
starter switch, the battery may not be 
sufficiently charged.
Check the battery and charge it if 
necessary (
page 403).
Get a jump start (
page 406).
To prevent accelerated battery dis-
charge or a completely discharged bat-
tery, always remove the SmartKey from 
the starter switch when the engine is 
not in operation.
iThe function of the SmartKey overrules 
the KEYLESS-GO function. 
         
        
        
     
        
        Page 38 of 474

36 Getting startedUnlockingPosition 0
Before you press the KEYLESS-GO 
start/stop button1, the vehicle’s 
on-board electronics have status 0 (as with 
SmartKey removed).
Position 1
Press KEYLESS-GO start/stop 
button1 once.
This supplies power to some electrical 
consumers, such as seat adjustment.Ignition (or position 2)
Press KEYLESS-GO start/stop 
button1 twice.
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 338).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button, 
see “Starting with KEYLESS-GO*” 
(
page 47).
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.iWhen you switch on the ignition, the in-
dicator and warning lamps (except high 
beam headlamp indicator lamp and 
turn signal indicator lamps unless acti-
vated) in the instrument cluster come 
on. This indicates that the respective 
systems are operational. The indicator 
and warning lamps (except high beam 
headlamp indicator lamp and turn sig-
nal indicator lamps unless activated) 
should go out when the engine is run-
ning. 
         
        
        
     
        
        Page 49 of 474

47 Getting started
Driving
Starting 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.
The SmartKey with KEYLESS-GO must be 
located in the vehicle.KEYLESS-GO start/stop button1USA only
2Canada only
M a k e  s u r e  t h e  g e a r  s e l e c t o r  l e v e r  i s  s e t  
toP.
Depress the brake pedal during the 
starting procedure. Do not depress ac-
celerator.
The gear 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 the en-
gine with KEYLESS-GO*” (
page 57).
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 46). Remember that extended 
starting attempts can drain the battery.
Get a jump start (
page 406).
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 51 of 474

49 Getting started
Driving
Release the brake pedal.
Carefully depress the accelerator 
pedal.Once the vehicle is in motion, the automat-
ic central locking system engages and the 
locking knobs drop down.
After a cold start, the automatic transmis-
sion shifts at a higher engine revolution. 
This allows the catalytic converter to reach 
its operating temperature earlier.
For more information, see “Driving instruc-
tions” (
page 273).
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 damaging 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.
!If you hear a warning signal and a mes-
sage appears in the multifunction dis-
play when driving off, you have 
forgotten to release the parking brake.
Release the parking brake.!Do not run cold engine at high engine 
speeds. Running a cold engine at high 
engine speeds may shorten the service 
life of the engine.
!Simultaneously depressing the acceler-
ator pedal and applying the brake re-
duces engine performance and causes 
premature brake and drivetrain wear.iYou can open a locked door from the 
inside. Open doors only when condi-
tions are safe to do so.
You can deactivate the automatic lock-
ing using the control system 
(page 168). 
         
        
        
     
        
        Page 55 of 474

53 Getting started
Driving
Intermittent wiping
Set the wiper switch to position I.
Single wipe
Press the combination switch briefly in 
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.
For information on filling up the washer 
reservoir, see “Windshield washer system 
and headlamp cleaning system*” 
(
page 295).iIntermittent wiping is interrupted when 
the vehicle is at a standstill and a front 
door is opened.
!If anything blocks the windshield wip-
ers (leaves, snow, etc.), switch them off 
immediately.
For safety reasons, 
turn off the engine by turning 
the SmartKey to position0 and 
withdraw SmartKey from starter 
switch
or
turn off the engine by pressing 
the KEYLESS-GO* start/stop 
button (
page 35) and open 
the driver’s door (with the driv-
er’s door open, starter switch is 
in position0, same as with 
SmartKey removed from 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 56 of 474

54 Getting startedDrivingProblems 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.The coolant temperature 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 292).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.
iExcessive coolant temperatures trigger 
a warning message in the multifunction 
display (
page 359). 
         
        
        
     
        
        Page 57 of 474

55 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
With the engine not running, there is no 
power assistance for the brake and the 
steering systems. In this case, it is impor-
tant to keep in mind that a considerably 
h i g h e r  d e g r e e  o f  e f f o r t  i s  n e c e s s a r y  t o  b r a k e  
and steer the vehicle.
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 
wheel towards the road curb.
Turn the SmartKey to starter switch 
position0 and remove, or press 
KEYLESS-GO* start/stop button 
(page 35).
Take the SmartKey or the SmartKey with 
KEYLESS-GO* with you and lock vehicle 
when leaving.