GWarning!
When closing the sliding sunroof, make sure
that there is no danger of anyone being
harmed by the closing procedure.
The opening procedure of the sliding sunroof
can be immediately halted by releasing the
sunroof switch or, if the sunroof switch was
moved past the resistance point and released,
by moving the sunroof switch in any direction.
The closing procedure of the sliding sunroof
can be immediately halted by releasing the
sliding sunroof switch. The closing procedure
of the sliding sunroof can be immediately
reversed by moving the sliding sunroof switch
toward : or ?.
If you are not wearing a seat belt, or are not
wearing it correctly, there is a risk that you
could be thrown through the opening in the
event of the vehicle overturning. An opening
of this kind poses a risk of injury even to
passengers who are wearing their seat belts
correctly, as parts of the body could protrude
from the vehicle interior.
! Only open the sliding sunroof if it is free
of snow and ice. Otherwise, malfunctions
may occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
! If the sliding sunroof cannot be opened or
closed due to a malfunction, contact a
qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center.
! The weather can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronics can be
damaged if water enters the vehicle
interior.
i Resonance noises can occur in addition
to the usual airflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open a side window slightly to reduce or
eliminate these noises.
Opening and closing the sliding
sunroof
Overhead control panel
:To raise;To lower=To close?To openXTurn the SmartKey to position 1 or 2 in the
ignition lock.XPress or pull the 2 switch in the
corresponding direction.
i If you press the 2 switch beyond the
point of resistance while opening, an
automatic opening process is started. You
can stop automatic operation by operating
the switch again.
Operating the sliding sunroof
manually
The actuator is located in the cargo
compartment, on the left-hand side behind
the rear wall trim.
Sliding sunroof73Opening and closingZProCarManuals.com
Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
relevant systems and functions.
Correct driver's seat position
Observe the safety guidelines on
( Y page 77).
XCheck whether you have adjusted seat =
properly.
Electrical seat adjustment ( Y page 78).
When adjusting the seat, make sure:
R you are as far away from the driver's air
bag as possible.
R you are sitting in a normal upright
position.
R you can fasten the seat belt properly.
R you have moved the backrest to an
almost vertical position.R you have set the seat cushion angle so
that your thighs are gently supported.
R you can depress the pedals properly.XCheck whether the head restraint is
adjusted properly ( Y page 79).
When doing so, make sure that you have
adjusted the head restraint so that the back
of your head is supported at eye level by
the center of the head restraint.
Observe the safety guidelines on
( Y page 77).
XCheck whether steering wheel : is
adjusted properly.
Adjusting the steering wheel electrically
( Y page 83).
When adjusting the steering wheel, make
sure:
R you can hold the steering wheel with your
arms slightly bent.
R you can move your legs freely.
R you can see all the displays in the
instrument cluster clearly.
Observe the safety guidelines on
( Y page 43).
XCheck whether you have fastened seat
belt ; properly ( Y page 45).
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip jointsXBefore starting off, adjust the rear-view
mirror and the exterior mirrors
( Y page 85) in such a way that you have
a good view of road and traffic conditions.XVehicles with a memory function: save
the seat, steering wheel and exterior mirror
settings ( Y page 88).76Correct driver's seat positionSeats, steering wheel and mirrors
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
Combination switch
Turn signalXTo indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ; or ?.
The corresponding turn signal flashes three
times.XTo indicate: press the combination switch
beyond the pressure point in the direction
of arrow ; or ?.
The corresponding ! or # indicator
lamp in the instrument cluster flashes.
High-beam headlamps
XTo switch on: turn the SmartKey to
position 2 in the ignition lock or start the
engine.XTurn the light switch to L.XPress the combination switch beyond the
pressure point in the direction of
arrow :.
The K indicator lamp in the instrument
cluster lights up.XTo deactivate: move the combination
switch back to its normal position.
The K indicator lamp in the instrument
cluster goes out.High-beam flasherXTo switch on: turn the SmartKey in the
ignition lock to position 1 or 2 or start the
engine.XPull the combination switch briefly in the
direction of arrow =.
The K indicator lamp in the instrument
cluster lights up briefly.
Hazard warning lamps
The hazard warning lamp switches on
automatically if an air bag or the belt
tensioners are triggered and the SmartKey is
in position 1 in the ignition lock.
XTo switch on: press button :.
All turn signals flash. If you now switch on
a turn signal using the combination switch,
only the turn signal lamp on the
corresponding side of the vehicle will flash.XTo switch off: press the : button.
i
The hazard warning lamps still operate if
the ignition is switched off.
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated fifteen times while the lights are on
and the engine is running (Y page 102). When
you switch off the ignition, the automatic
headlamp cleaning system is reset and
counting is resumed from 0.
Exterior lighting93Lights and windshield wipersZProCarManuals.com
The display messages and the corresponding symbol that indicate that the coolant level is
too low must not be ignored.Display messagesPossible causes/consequences and M Solutions?
Coolant Stop, Turn
Engine offThe coolant is too hot.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XMake sure that the air supply to the radiator is not blocked, e.g.
by snow, slush or ice.XWait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.XPay attention to the coolant temperature display.XIf the temperature increases again, visit a qualified specialist
workshop immediately.The poly-V-belt may have torn.XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XOpen the hood.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XWait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.XPay attention to the coolant temperature display.XVisit a qualified specialist workshop.GWarning
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged.
Display messages175On-board computer and displaysZProCarManuals.com
Display messagesPossible causes/consequences and M Solutions?The engine fan is defective.XAt coolant temperatures under 248 ‡ (120 †), drive to the next
qualified specialist workshop.XAvoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.#The battery is not being charged.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronicsXPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.XOpen the hood.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XVisit a qualified specialist workshop.The battery voltage is too low.XSwitch off electrical consumers that are not required.XHave the battery and alternator checked at a qualified specialist
workshop.The battery has been charged or the vehicle has been jump-
started.XHave the battery and alternator checked at a qualified specialist
workshop.4
Check oil level at
next gas stationThe engine oil level has dropped to a critical level.XCheck the oil level ( Y page 215).XIf necessary, add engine oil ( Y page 216).XHave the engine checked for leaks if you need to add engine oil
more often than usual.You have added too much engine oil. There is a risk of damaging
the engine or catalytic converter.XSiphon off excess engine oil until it is at the specified level.
Observe the legal requirements.176Display messagesOn-board computer and displays
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
Rif the rear bench seat is not occupied, insert
the belt tongue on the outer seat belts into
the buckle of opposite seat belt :.
R secure the load with sufficiently strong and
wear-resistant tie down. Pad sharp edges
for protection.
Stowage compartments
Important safety notes
GWarning!
To help avoid personal injury during a collision
or sudden maneuver, exercise care when
storing objects in the vehicle. Put luggage or
cargo in the cargo compartment if possible.
Do not pile luggage or cargo higher than the
seat backrests.
Keep compartment lids closed. This will help
to prevent stored objects from being thrown
about and injuring vehicle occupants during
R braking
R vehicle maneuvers
R an accident
Front stowage compartments
Glove box
i Depending on the vehicle's equipment,
you will find an AUX-IN jack or a Media
Interface installed in the glove box. A Media
Interface is a universal interface for
portable audio equipment, e.g. for an
iPod ®
or USB device (see the separate
Audio or COMAND operating instructions).XTo open: pull handle : and open glove box
flap ;.XTo close: fold glove box flap ; upwards
until it engages.
The glove box can only be locked and
unlocked using the mechanical key.
1Glove box unlocked2Glove box lockedXTo lock: insert the mechanical key
( Y page 63) into the lock and turn it 90°
clockwise to position 2.XTo unlock: insert the mechanical key
( Y page 63) into the lock and turn it 90°
counter-clockwise to position 1.
Stowage compartment/telephone
compartment under the armrest/in the
center console.
Under the armrest is a shallow stowage tray
(telephone compartment), under which is a
deeper stowage compartment.
Stowage compartments193Loading, stowing and featuresZProCarManuals.com