Page 38 of 481

37 Getting started
Unlocking
For information on starting the engine, see
(page 50).
iWhen you switch on ignition, the indi-
cator and warning lamps (except high
beam headlamp indicator lamp and
turn signal indicator lamps unless acti-
vated) in the instrument cluster come
on. The indicator and warning lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps if
activated) will go out when the engine
is running. This indicates that the re-
spective systems are operational.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 vehicle battery may
not be sufficiently charged.
Check the vehicle battery and
charge it if necessary (
page 421).
Get a jump start (
page 424).
To prevent accelerated vehicle battery
discharge or a completely discharged
vehicle battery, always remove the
SmartKey from the starter switch when
the engine is not in operation.
Page 39 of 481

38 Getting startedAdjustingSeats
The seats can be adjusted either manually
or electrically, depending on the vehicle’s
equipment.
For more information, see “Seats”
(page 104).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 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 un-
der the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen 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 positioned on the body. Your seat
must be adjusted so that you can correctly
fasten your seat belt (
page 47).
Never place hands under the seat or near
moving parts while the seat is being
adjusted.
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.
Page 40 of 481

39 Getting started
Adjusting
Manual seat adjustment
1Seat fore and aft adjustment
2Seat height
3Backrest tiltSeat fore and aft adjustment
Pull handle1.
Slide the seat to the desired position.
Adjust seat to a comfortable seating
position that allows you to reach the
accelerator/ brake pedal safely. The
position should be as far rearward as
possible, consistent with ability to
properly operate controls.
Allow handle1 to reengage with an
audible click.
Check for proper engagement before
driving.
Warning!
G
Children 12 years old and under must never
ride in this vehicle, except in a
Mercedes-Benz authorized BabySmart
TM
compatible child seat, which operates with
the BabySmart
TM system installed in the ve-
hicle to deactivate the passenger front
air bag when it is properly installed.
Otherwise they will be struck by the air bag
when it inflates in a crash. If this happens,
serious or fatal injury will result.
Infants and small children must be seated in
an appropriate BabySmart
TM compatible in-
fant or child restraint system, which is prop-
erly secured with the vehicle’s seat belt,
fully in accordance with the child seat
manufacturer’s instructions.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
!When moving the seats, make sure
there are no items in the footwell or
behind the seats. Otherwise you could
damage the seats.
Page 42 of 481
41 Getting started
Adjusting
Backrest tilt
Press the vertical switch forward or
backward in direction of arrow3 until
your arms are slightly angled when
holding the steering wheel.
Seat cushion tilt
Press the horizontal switch up or down
in direction of arrow4 until your up-
per legs are lightly supported.Head restraint height
Head restraint
Adjust the height of head restraints
manually by pulling them upwards or
pushing them downwards.
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that the head re-
straint supports the back of the head at eye
level. This will reduce the potential for injury
to the head and neck in the event of an ac-
cident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
iAdjust the head restraint in such a way
that it is as close to the head as
possible.
Page 43 of 481

42 Getting startedAdjustingSteering wheel Steering wheel adjustment, manual
1Adjustment handle
To unlock the steering column, pull
handle1 out to its stop limit.
Move the steering wheel to the desired
position.
Push handle1 back to its original po-
sition to relock the steering column.
When you hear an audible click, the
steering column is again fixed into
place.
Make sure the steering column is se-
curely locked by trying to move the
steering wheel up and down, in and out
before driving off.
Warning!
G
Do not adjust the steering wheel while driv-
ing. Adjusting the steering wheel while driv-
ing, or driving without the steering wheel
adjustment feature 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.
!Do not drive the vehicle until you have
properly locked the steering column.Warning!
G
Only adjust the steering wheel with the vehi-
cle at a standstill and make sure the steer-
ing column is securely locked in place
before driving off.
Driving without the steering column locked
may cause an unexpected steering wheel
movement which could cause the driver to
lose control of the vehicle. Make sure the
steering column is securely locked by trying
to move it up and down, and in and out be-
fore driving off.
Page 45 of 481

44 Getting startedAdjusting
With the easy-entry/exit feature activated,
the steering wheel will return to its last set
position when you:
close the driver’s door with the ignition
switched on,
or
insert the SmartKey into the starter
switch with the driver’s door closed.With the easy-entry/exit feature activated,
the steering wheel tilts upwards when you:
remove the SmartKey from the starter
switch,
or
open the driver’s door with the
SmartKey in starter switch
position0or1.
Warning!
G
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To cancel steering wheel movement, do one
of the following:
Move steering column lever*
(page 43).
Press one of the memory position but-
tons* or the memory buttonM*
(page 107).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
iThe last set steering wheel position is
stored when
the ignition is switched off
the position is stored in memory
(page 107)
iIf the current position for the steering
wheel is in the uppermost tilt position,
the steering wheel will no longer be
able to move upward when the
easy-entry/exit feature is activated.
The adjustment procedure is briefly in-
terrupted when the engine is started.
Page 46 of 481

45 Getting started
Adjusting
Mirrors
Adjust the interior and exterior rear view
mirrors before driving so that you have a
good view of the road and traffic condi-
tions.Interior rear view mirror
Adjust the interior rear view mirror
manually.
For more information, see “Rear view mir-
rors” (
page 173).
Exterior rear view mirrors
Warning!
G
Let the system complete the adjustment
procedure before setting the vehicle in mo-
tion. All steering wheel adjustment must be
completed before setting the vehicle in mo-
tion. Driving off with the steering wheel still
adjusting could cause the driver to lose con-
trol of the vehicle.
Warning!
G
In case of an accident, liquid electrolyte may
escape the mirror housing if the mirror glass
breaks.
Electrolyte has an irritating effect. Do not al-
low the liquid to come into contact with
eyes, skin, clothing, or respiratory system.
In case it does, immediately flush affected
area with water, and seek medical help if
necessary.!Electrolyte drops coming into contact
with the vehicle paint finish can only be
completely removed while in their
liquid state and by applying plenty of
water.
Warning!
G
Exercise care when using the passen-
ger-side exterior rear view mirror. The mirror
surface is convex (outwardly curved surface
for a wider field of view). Objects in mirror
are closer than they appear. Check your in-
terior rear view mirror or glance over your
shoulder before changing lanes.
Page 48 of 481

47 Getting started
Driving
Driving
Fastening the seat belts
Warning!
G
Do not lay any objects in the driver’s foot-
well. Be careful that floor mats or carpets in
the driver’s footwell have sufficient clear-
ance for the pedals.
During sudden driving or braking maneuvers
the objects could get caught between the
pedals. You could then no longer brake or
accelerate.
Warning!
G
Always fasten your seat belt before driving
off. Always make sure your passengers are
properly restrained, even pregnant women.
Failure to wear and properly fasten and po-
sition your seat belt greatly increases your
risk of injuries and their likely severity in an
accident. You and your passenger should al-
ways wear seat belts.
If you are ever in an accident, your injuries
can be considerably more severe without
your seat belt properly buckled. Without
your seat belt buckled, you are much more
likely to hit the interior of the vehicle or be
ejected from it. You can be seriously injured
or killed.
In the same crash, the possibility of injury or
death is lessened if you are wearing your
seat belt. The air bags can only provide the
protection they were designed to afford if
the occupants are using their seat belts
(page 64).