Page 57 of 474

55 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.The 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 276).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 58 of 474

56 Getting startedParking and lockingYou 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 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 in the starter switch
to position0 and remove the SmartKey
from the starter switch, or press the
start / stop button (vehicles with
KEYLESS-GO*).
Take the SmartKey or the SmartKey with
KEYLESS-GO* and lock vehicle when
leaving.
Page 59 of 474

57 Getting started
Parking and locking
Parking brake
1Parking brake
2Release handle
Step firmly on parking brake1.
When the engine is running, the indica-
tor lamp;(USA only) or3
(Canada only) in the instrument cluster
will be illuminated.
Switching off headlamps
Turn the exterior lamp switch to posi-
tion M (
page 51).
For more information, see “Exterior lamp
switch” (
page 123).
Warning!
G
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Children
could release the parking brake and/or
move the gear selector lever from
positionP, either of which could result in an
accident and/or serious injury.
Warning!
G
Getting out of your vehicle with the gear se-
lector lever not fully engaged in positionP is
dangerous. Also, when parked on an incline,
positionP alone may not prevent your vehi-
cle from moving, possibly hitting people or
objects.
Always set the parking brake in addition to
shifting to positionP (
page 167).
When parked on an incline, also turn front
wheels towards the road curb.
Page 60 of 474

58 Getting startedParking and lockingTurning off the engine
Place the gear selector lever in
positionP.
Turning off with the SmartKey
Turn the SmartKey in the starter switch
(page 36) to position0 and remove
it.
Press the seat belt release button
(page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
After exiting the vehicle, press the lock
button‹on the SmartKey
(page 34).
All turn signal lamps flash three times.
The locking knobs on the doors move
down. The anti-theft alarm system is
armed.
iAlways set the parking brake in addi-
tion to shifting to positionP.
On slopes, turn the front wheels to-
wards the road curb. iThe immobilizer is activated.iThe SmartKey can only be removed
from the starter switch with the gear
selector lever in positionP.
iWith the SmartKey removed and the
driver’s door open, a warning sounds if
the vehicle’s exterior lamps are not
switched off.iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure that there
is no possibility of someone getting caught
in a door during closing.
Page 61 of 474

59 Getting started
Parking and locking
For more information, see “Locking and
unlocking” (
page 94).Turning off with KEYLESS-GO*
Place the gear selector lever inP.
Press the KEYLESS-GO start/stop but-
ton to shut off the engine.
With the driver’s door closed, the start-
er switch is now in position1. With the
driver’s door opened, the starter switch
is set to position0, same as SmartKey
removed from starter switch
(page 36).
Press the seat belt release button
(page 45).
Allow the retractor to completely re-
wind the seat belt by guiding the latch
plate.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.
iIf you hear a warning signal you have
either
forgotten to turn off the lights be-
fore opening the driver’s door
or
tried to turn off the engine while the
gear selector lever is not inP
Turn off the lights or place the gear se-
lector lever inP.
iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.
Page 62 of 474

60 Getting startedParking and locking1Lock button on the door handle
After exiting the vehicle, press lock
button1 on the door handle or the
lock button on the trunk lid
(page 104).
All turn signal lamps flash three times.
The locking knobs on the doors move
down. The anti-theft alarm system is
armed.
For more information, see “Locking and
unlocking” (
page 94).
Emergency engine shut-down
If the engine cannot be turned off as de-
scribed, you may use the following backup
procedure.
Open the main fuse box (
page 412).
Pull out the two fuses labeled “ENGINE
EMERGENCY STOP”.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
openings when closing the doors. Be espe-
cially careful when small children are
around.
Before closing doors, make sure that there
is no possibility of someone getting caught
in a door during closing.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
Page 63 of 474
61 Safety and Security
Occupant safety
Panic alarm
Driving safety systems
Anti-theft systems
Page 64 of 474

62 Safety and SecurityOccupant safetyIn this section you will learn the most im-
portant facts about the restraint systems
of the vehicle.
The restraint systems are
Seat belts
Emergency tensioning device
Airbags
Child seats
Child seat recognition
As independent systems, their protective
effects work in conjunction with each oth-
er.The 1 indicator lamp in the instrument
cluster comes on
for about four seconds when you turn
the SmartKey in the starter switch to
position 1 or press the KEYLESS-GO*
start/stop button once. It then goes
out briefly, comes on again and re-
mains lit until you start the engine, turn
the SmartKey to position 2 or press the
KEYLESS-GO start/stop button once
more (
page 34).
for about four seconds when you turn
the SmartKey in the starter switch to
position 2 or press the KEYLESS-GO*
start/stop button twice (
page 34).
for about four seconds when you start
the engine by turning the SmartKey in
the starter switch or by pressing the
KEYLESS-GO* start/stop button once
with the brake pedal depressed
(page 48).
The 1 indicator lamp goes out shortly
after you start the engine. This shows that
the restraint systems are operational.A malfunction in the system has been de-
tected if the 1 indicator lamp
fails to go out after approximately four
seconds
does not come on at all
comes on after the engine was started
or while driving
For more information, see the “Practical
hints” section (
page 332).
iFor information on infants and children
traveling with you in the vehicle and re-
straint systems for infants and chil-
dren, see “Children in the vehicle”
(page 74).