Page 34 of 474

33
Getting started
Unlocking
Starter switch positions
Starter switch0
For removing SmartKey
The steering is locked when the Smart-
Key is removed from the starter switch.
If necessary, move steering wheel
slightly to allow the locking mechanism
to engage.
1 Power supply to some electrical con-
sumers, such as seat adjustment 2
Ignition (power supply for all electrical
consumers) and driving position. All
lamps (except low beam headlamp in-
dicator lamp, high beam headlamp indi-
cator 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 340).
3 Starting position
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.
Page 35 of 474

34 Getting startedUnlocking
iWhen you switch on the ignition, the in-
dicator and warning lamps (except low
beam headlamp indicator lamp, 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 low beam
headlamp indicator lamp, high beam
headlamp indicator lamp, and turn sig-
nal indicator lamps if activated) should
go out when the engine is running.iVehicles with automatic transmission:
The SmartKey can only be removed
from the starter switch with the gear
selector lever in positionP.
!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 401).
Get a jump start (
page 404).
To prevent accelerated battery dis-
charge and a possible dead battery, al-
ways remove the SmartKey from the
starter switch when the engine is not in
operation.
Page 36 of 474

35
Getting started
Adjusting
Adjusting
Seats
The seats can be adjusted either manually
or electrically, depending on the vehicle’s
equipment.Warning!
G
All seat, head restraint, steering wheel, and
rear view mirror adjustments, as well as fas-
tening of seat belts, must be done before
the vehicle is put into motion.Warning!
G
Do not adjust the driver’s seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never ride in a moving vehicle with the seat
back in an excessively reclined position as
this can be dangerous. You could slide
under the seat belt in a collision. If you slide
under it, the belt would apply force at the
abdomen or neck.
That could cause serious or fatal injuries.
The seat back and seat belts provide the
best restraint when the wearer is in a nearly
upright position and belts are properly posi-
tioned on the body. Your seat must be
adjusted so that you can correctly fasten
your seat belt (
page 44).
Never place hands under the seat or near
any moving parts while a seat is being ad-
justed.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle.
Even with the SmartKey removed from the
starter switch, the power seats* can be op-
erated when the respective door is open.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
Warning!
G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats
whenever possible. Regardless of seating
position, children 12 years old and under
must be seated and properly secured in an
appropriate infant, or toddler restraint, or
booster seat recommended for the size and
weight of the child. For additional
information, see “Children in the vehicle”
(page 70).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is not properly secured in
the child restraint.
Page 41 of 474

40 Getting startedAdjustingFolding backrest forward
Pivot seat belt presenter2 down.
Pull release lever 1 forward and fold
the seat backrest forward.
Vehicles with manual seat adjustment:
If necessary, press the head restraint
downward while tilting the backrest
forward. Folding backrest back
Fold and press the backrest rearward
until it engages in driving position.
Vehicles with manual seat adjustment:
If necessary, pull the head restraint out
while tilting the seat back.
For more information, see “Seats”
(
page 100).
Steering wheel
iVehicles with power seat*: The head
restraints will automatically move
down.
iVehicles with power seat*: The head
restraint returns to its previous posi-
tions.
Warning!
G
Do not adjust the steering wheel while
driving. Adjusting the steering wheel while
driving, or driving without the steering wheel
adjustment locked could cause the driver to
lose control of the vehicle.
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle.
Even with the SmartKey removed from the
starter switch, the electrical steering wheel
adjustment feature* can be operated when
the driver’s door is open. Therefore, 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 42 of 474

41
Getting started
Adjusting
Steering wheel adjustment, manual
1 Handle
To unlock the steering column, pull
handle 1 out until its stop limit.
Move steering wheel to the desired
position.
To lock the steering column, push
handle 1 all the way in until it
engages.
The steering wheel is once again
locked into position.
Make sure the steering wheel is
securely locked by trying to move it up
and down, and in and out before driving
off.
Make sure your legs can move freely and
that all the displays (inclusive malfunction
and indicator lamps) on the instrument
cluster are clearly visible. Steering wheel adjustment, electrical*
The stalk for steering wheel adjustment is
located on the steering column (lower left).
1 Adjusting steering column, in or out
2 Adjusting steering column, up or down
Switch on the ignition (
page 33).
or
Open the driver’s door.
Warning!
G
Only adjust the steering wheel with the vehi-
cle at a standstill and make sure the steer-
ing wheel is securely locked in place before
driving off.
Driving without the steering wheel adjust-
ment locked may cause an unexpected
steering wheel movement which could
cause the driver to lose control of the vehi-
cle. Make sure the steering wheel is secure-
ly locked by trying to move it up and down,
and in and out before driving off.
Page 49 of 474

48 Getting startedDrivingStarting the engineManual transmission
Gearshift pattern for manual transmissionFor more information, see “Manual trans-
mission” (
page 157).Starting
Depress brake pedal.
Make sure the gearshift lever is in neu-
tral position (no gear selected).
Fully depress clutch pedal.
Otherwise the engine cannot be start-
ed due to the integrated safety inter-
lock.
Do not depress accelerator.
Turn the SmartKey in the starter switch
to position
3 and hold until the engine
starts (
page 33).
For information on turning off the engine,
see “Turning off the engine” (
page 58).
Warning!
G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide, and inhaling it can cause uncon-
sciousness and lead to death.
Do not run the engine in confined areas
(such as garage) which are not properly ven-
tilated. If you think that exhaust gas fumes
are entering the vehicle while driving, have
the cause determined and corrected imme-
diately. If you must drive under these condi-
tions, drive only with at least one window
fully open.
Page 50 of 474

49
Getting started
Driving
Automatic transmission*Gearshift pattern for automatic
transmissionP
Park position with gear selector lever
lock
R Reverse gear
N Neutral
D Drive position
For more information, see “Automatic
transmission*” (
page 159). Starting
Make sure the gear selector lever is set
to
P.
Do not depress accelerator.
Turn the SmartKey in the starter switch
to position 3 and hold until the engine
starts (
page 33).
Depress brake pedal.
The selector lever lock is released.
For information on turning off the engine
with the SmartKey, see “Turning off the en-
gine” (
page 58). Starting difficulties
If the engine does not start as described,
carry out the following steps:
Turn SmartKey in starter to position
0
and repeat starting procedure.
Remember that extended starting
attempts can drain the battery.
Get a jump start (
page 404).
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.
iYou can also use the “touch-start”
function. Turn the SmartKey to
position 3 and release it again immedi-
ately. The engine then starts automati-
cally.
Page 51 of 474

50 Getting startedDrivingParking brake 1 Release handle
2 Parking brake
Release the parking brake by pulling on
handle 1.
The indicator lamp ; (USA only) or
3 (Canada only) in the instrument
cluster goes out.
Driving
Depress brake pedal.
Move gear selector lever to position D
or R (manual transmission: first or re-
verse gear).
Release the brake pedal.
Carefully depress the accelerator
pedal.
Once the vehicle is in motion, the auto-
matic central locking system engages
and the locking knobs drop down.
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. Children
could release the parking brake, which
could result in an accident and/or serious
injury.
iVehicles with automatic transmission*:
Wait for the gear selection process to
complete before setting the vehicle in
motion.
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 148).
!Simultaneously depressing the acceler-
ator pedal and applying the brake re-
duces engine performance and causes
premature brake and drivetrain wear.!If you hear a warning signal when driv-
ing off, you have forgotten to release
the parking brake.
Release the parking brake.