XTake mechanical key ; out of the
SmartKey ( Y page 63).XInsert mechanical key ; into the lock of
the driver's door as far as it will go.XTurn mechanical key ; clockwise as far as
it will go to position 1.XTurn the mechanical key back and remove
it.XMake sure that the doors and the tailgate
are locked.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed.
Cargo compartment
Important safety notes
Do not leave the SmartKey in the cargo
compartment. Otherwise, you could lock
yourself out.
GWarning
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.
GWarning!
Do not carry heavy or hard objects in the
passenger compartment or cargo
compartment unless they are firmly secured
in place.
Unsecured or improperly positioned cargo
increases a child’s risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
Cargo compartment69Opening and closingZProCarManuals.com
GWarning!
The tailgate swings open to one side. Always
make sure there is sufficient clearance for the
tailgate.
Make sure the tailgate is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
gases may enter vehicle interior resulting in
unconsciousness and death.
! The tailgate swings out to the side when
opened. Therefore, make sure that there is
sufficient clearance.
Opening
You can only open the rear door after
unlocking it first.
XPress the % button on the SmartKey.XPress release button : and pull door
handle ;.XOpen the rear door.
Closing
GWarning!
To prevent possible personal injury, always
keep hands and fingers away from the cargo
compartment opening when closing the
tailgate. Be especially careful when small
children are around.
Side windows
Important safety notes
GWarning
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.
GWarning!
Do not carry heavy or hard objects in the
passenger or cargo compartment unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child’s risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
70Side windowsOpening and closing
ProCarManuals.com
If potential danger exists, proceed as follows:
R Release button & to stop the closing
procedure. To open, press and hold button
% . To continue the closing procedure
after making sure that there is no danger of
anyone being harmed by the closing
procedure, press and hold button &.
i The SmartKey must be close to the
driver's door handle.XPoint the tip of the key at the driver's door
handle.XPress and hold the & button until the
side windows and the sliding sunroof are
fully closed.XMake sure that all the side windows and the
sliding sunroof are closed.XTo interrupt convenience closing:
release the & button.
Problems with the side windows
Problem: a side window cannot be closed
because objects are trapped between the
side window and the door frame.
XRemove the objects.XClose the side window.
Problem: a side window cannot be closed
because objects in the guide rail are
preventing the window from being raised.
XRemove the objects.XClose the side window.Sliding sunroof
Important safety notes
GWarning
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.
GWarning!
Do not carry heavy or hard objects in the
passenger or cargo compartment unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child’s risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
72Sliding sunroofOpening and closing
ProCarManuals.com
Seats
Important safety notes
GWarning
In order to avoid possible loss of vehicle
control, all seat, head restraint, steering
wheel and rear view mirror adjustments, as
well as fastening of seat belts, must be done
before setting the vehicle in motion.
GWarning
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 travel in a moving vehicle with the seat
backrest 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 seat belt would apply force at the
abdomen or neck. This could cause serious or
fatal injuries. The seat backrest and seat belts
provide the best restraint when the wearer is
in a position that is as upright as possible and
seat belts are properly positioned on the
body.
GWarning
Your seat belt must be adjusted so that you
can correctly fasten your seat belt.
Observe the following points:
R adjust the seat backrest until your arms are
slightly angled when holding the steering
wheel.
R adjust the seat to a comfortable seating
position that still allows you to reach the
accelerator/brake pedal safely. The
position should be as far back as possible
with the driver still able to operate the
controls properly.
R adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level.
R never place hands under the seat or near
any moving parts while a seat is being
adjusted.
Failure to do so could result in an accident
and/or serious personal injury.GWarning
The electrically adjustable seats can be
operated at any time. Therefore, do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. A child's
unsupervised access to a vehicle could result
in an accident and/or serious personal injury.
GWarning
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
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.
GWarning
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as close
to the head as possible and the center of the
head restraint 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
accident or similar situation.
Seats77Seats, steering wheel and mirrorsZProCarManuals.com
=Turn signals?Brake/tail lampATail lamp/standing lampXTurn the bulb counter-clockwise, applying
slight pressure, and remove it from bulb
holder.XInsert the new bulb into the bulb holder and
turn it clockwise until it engages.
! When installing the lens, make sure that
the seal is positioned correctly.
XInstall lens ;.XTighten screws :.
!
Do not fasten the screws too tightly. You
could otherwise damage the lens.
XG 55 AMG: secure the headlamp
protection grille ( Y page 100).
Backup lamp/rear fog lamp
Rear fog lamp (example)
XSwitch off the lights.XRemove screws :.XRemove lens ;.XTurn the bulb = counter-clockwise,
applying slight pressure, and remove it
from the bulb holder.XInsert the new bulb into the bulb holder and
turn it clockwise until it engages.XInstall lens ;.XTighten screws :.
!
Do not fasten the screws too tightly. You
could otherwise damage the lens.
Windshield wipers
Important safety notes
GWarning!
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windows will not be wiped
properly. As a result, you may not be able to
observe surrounding traffic conditions and
could cause an accident.
! Do not operate the windshield wipers
when the windshield is dry, as this could
damage the wiper blades. Moreover, dust
that has collected on the windshield/rear
window can scratch the glass if wiping
takes place when the windshield/rear
window is dry.
Windshield wipers101Lights and windshield wipersZProCarManuals.com
Selector lever
Overview of transmission positions
Selector lever
PPark position with selector lever lockRReverse gearNNeutralDDrive
Transmission position display
:Transmission position/shift range;Transfer case position
Current shift range : and current transfer
case position ; are shown in the instrument
cluster display.
! If the transmission position display in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Select transmission position D.
Do not restrict the shift range.
Displays on the cover beside the selector
lever also indicate the current position of the
selector lever.
The displays light up when the SmartKey is
inserted into the ignition lock. The displays go
out when the SmartKey is removed from the
ignition lock.
When the selector lever is in position D, you
can influence the gearshifts made by the
automatic transmission by:
R restricting the shift range
R changing gear yourself
Transmission positions
BPark position
Do not shift the transmission into
position P(Y page 134) unless the
vehicle is stationary. The parking
lock should not be used as a brake
when parking. In addition to
engaging the parking lock, you
must always apply the parking
brake to secure the vehicle.
i The SmartKey can only be
removed if the transmission is in
position P. When there is no
SmartKey in the ignition lock, the
selector lever is locked in
position P.
If the vehicle electronics are
malfunctioning, the selector lever
may be locked in position P. To
release a locked selector lever, see
"Manual override of parking lock"
( Y page 126).
Have the vehicle electronics
checked immediately at a qualified
specialist workshop, e.g. an
authorized Mercedes-Benz Center.CReverse gear
Only shift the transmission to R
when the vehicle is stationary.122Automatic transmissionDriving and parking
ProCarManuals.com
Off-road driving
Important safety notesGWarning!
Sand, dirt, mud and other material having
friction property can cause exceptional wear
and tear as well as brake failure.
Have the brakes checked for dirt build-up and
cleaned. There is otherwise a risk that full
braking power may not be available in an
emergency.
GWarning!
Do not load items on the basic carrier bars. It
may cause instability during some maneuvers
which could result in an accident.
Drive slowly in unknown terrain. This will
make it easier to recognize unexpected
obstacles and avoid damage to the vehicle.
To help avoid the vehicle rolling over, never
turn it around on steep inclines. If the vehicle
cannot complete the attempted climb, back it
down in reverse gear.
Do not drive along the side of a slope. The
vehicle might otherwise rollover. If in doing so
the vehicle begins to show a tendency to roll,
immediately steer into a line of gravity
(straight up or downhill).
Never let the vehicle roll backwards in idle.
You may lose control of the vehicle if you use
only the service brake. For information on
driving downhill, see "Driving downhill".
GWarning!
Do not reduce the tire inflation pressure
before driving through sand. However, if you
do so, remember to correct the tire inflation
pressure before continuing your trip. Driving
with reduced tire inflation pressure increases
the risk of losing control of the vehicle and
rolling over.
General notes
Read this section carefully before driving your
vehicle off-road. Practice by driving over more
gentle off-road terrain first.
Familiarize yourself with the characteristics
of your vehicle and the gear shift operation
before driving through difficult terrain.
The following driving systems are specially
adapted to off-road driving:
R 4ETS ( Y page 58)
R transfer case ( Y page 126)
R differential locks ( Y page 129)
Observe the following notes:
R stop your vehicle and, if necessary, shift the
transfer case to LOW (Y page 126) before
driving off-road.
R engage the differential locks, if necessary
( Y page 129).
i ABS, 4ETS, ESP ®
and BAS are deactivated
while the differential locks are engaged.
This allows the front wheels to lock briefly,
so that these can dig into a loose surface.
However, please note that locked wheels
skid and can no longer steer.
R Check that items of luggage and loads are
stowed safely and are well secured
( Y page 196).
R Make sure there is always sufficient ground
clearance to prevent damage to the
vehicle.
R Always keep the engine running and in gear
when driving on a downhill gradient.
R Always keep the engine running and in gear
when driving on a slope.
R Drive slowly and evenly, if necessary at a
walking pace.
R Ensure that the wheels are in contact with
the ground at all times.
R Drive with extreme care on unknown off-
road routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
142Driving tipsDriving and parking
ProCarManuals.com
Seat beltProblemPossible causes/consequences and M Solutions7
After starting the
engine, the red seat
belt warning lamp lights
up for six seconds.The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.XFasten your seat belt ( Y page 43).7
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a
warning tone sounds
for up to six seconds.GRisk of injury
The driver's seat belt is not fastened.
XFasten your seat belt ( Y page 43).
The warning tone ceases.7
The red seat belt
warning lamp lights up
after the engine starts,
as soon as the driver's
or the front-passenger
door is closed.GRisk of injury
The driver or front passenger has not fastened their seat belt.
XFasten your seat belt ( Y page 43).
The warning lamp goes out.GRisk of injury
There are objects on the front-passenger seat.
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.7
The red seat belt
warning lamp flashes
and an intermittent
audible warning
sounds.GRisk of injury
The driver or front passenger has not fastened their seat belt. In
addition, you are driving faster than 15 mph (25 km/h) or you have
briefly driven faster than 15 mph (25 km/h).
XFasten your seat belt ( Y page 43).
The warning lamp goes out and the intermittent audible warning
ceases.GRisk of injury
There are objects on the front-passenger seat. In addition, you are
driving faster than 15 mph (25 km/h) or you have briefly driven
faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent audible warning
ceases.184Warning and indicator lamps in the instrument clusterOn-board computer and displays
ProCarManuals.com