Attaching a roof rack
WARNING Risk of injury if the maximum roof load is exceeded
When you load the roof, the centre of gravity of the vehicle rises and the usual driving characteristics as well as the steering and braking characteristics change. During cornering, the vehicle tilts more strongly and may react more sluggishly to steering movements.
If you exceed the maximum roof load, the driving characteristics, as well as the steering and braking characteristics, will be greatly impaired.
Always comply with the maximum roof load and adjust your driving style.
NOTE Vehicle damage from non-approved roof racks
The vehicle could be damaged by roof racks which have not been tested and approved by Mercedes-Benz.
Only use roof racks tested and approved by Mercedes-Benz.
Depending on the vehicle equipment, ensure that when the roof rack is fitted:
the sliding sunroof can be fully raised.
the tailgate can be opened completely.
Position the load on the roof rack in such a way that the vehicle will not sustain damage even when it is in motion.
NOTE Damage to the panoramic sliding sunroof when a roof rack is fitted
The panoramic sliding sunroof may be damaged by the roof rack if you attempt to open it when the roof rack is fitted.
Do not open the panoramic sliding sunroof if a roof rack is fitted.
In order to allow ventilation of the vehicle interior, you can raise the panoramic sliding sunroof.
Secure the roof rack to the roof railing.
Observe the manufacturer's installation instructions.
Folding the rear seat backrest forwards
WARNING Risk of becoming trapped when adjusting the seats
When you adjust a seat, you may trap yourself or a vehicle occupant.
When adjusting a seat, make sure that no one has any body parts in the sweep of the seat.
WARNING Risk of accident if seat and seat backrest are not engaged
If the seat and seat backrest are not engaged they could fold forwards, e. g. when braking or in the event of an accident.
The seat or seat backrest which is not engaged will then push the vehicle occupant against the seat belt. The seat belt would not be able to provide the intended protection and could cause additional injury.
A child restraint system will then no longer be supported correctly or positioned correctly and will no longer perform its intended function.
The seat backrest cannot restrain objects or goods in the luggage compartment.
Always ensure that the seat and seat backrest are engaged:
before passengers travel on a seat with the EASY-ENTRY/EXIT feature
after adjusting the seat
after the EASY-ENTRY/EXIT feature is used
after the load compartment enlargement has been folded down.
Always ensure that all vehicle occupants have their seat belts fastened correctly and are sitting properly. Particular attention must be paid to children.
If you no longer require the folded-down seat backrest as a loading area, fold the backrest back into place.
Make sure that the red marking of the lock verification indicator is no longer visible. Otherwise, the seat backrest is not locked.
Depending on the vehicle equipment, a message is displayed on the instrument cluster instead of the red lock verification indicator.
Folding the rear seat backrest forwards
Requirements:
Vehicles with a middle seat backrest: the middle seat backrest is not in the load compartment floor position.
Vehicles with folding rear seat armrest: the rear seat armrest has been folded up.
Briefly press the buttons 
to fold the left or right seat backrest forwards.
to fold the left or right seat backrest forwards. 7-seater: With the ALL button, all rear seat backrests can be folded forwards together.
The head restraint of the seat backrest moves into a suitable position and the seat folds forwards. Vehicles with a middle seat backrest: the middle seat backrest folds forwards together with the left seat backrest.
If a seat in the second row of seats is not engaged and locked, this will be shown on the multifunction display on the instrument cluster.
Folding the middle seat backrest forwards (7-seater)
Press the release catch 
of the seat backrest.
of the seat backrest. Fold the seat backrest 
forwards.
forwards. Folding forwards the seat backrest in the third row of seats
In the rear (7-seater): Pull the buttons briefly to fold the left or right seat backrest forwards.
briefly to fold the left or right seat backrest forwards. 
In the load compartment: briefly press the buttons to fold the left or right seat backrest forwards.
to fold the left or right seat backrest forwards. Folding the rear seat backrest back
WARNING Risk of becoming trapped when adjusting the seats
When you adjust a seat, you may trap yourself or a vehicle occupant.
When adjusting a seat, make sure that no one has any body parts in the sweep of the seat.
WARNING Risk of injury if the rear bench seat/rear seat and seat backrest are not engaged
If the rear bench seat/rear seat and seat backrest are not engaged they could fold forwards, e.g. when braking suddenly or in the event of an accident.
If this is the case, the vehicle occupant would be forced into the seat belt by the rear bench seat/rear seat or by the seat backrest. The seat belt cannot protect as intended and could result in additional injury.
Objects or loads in the boot/load compartment cannot be restrained by the seat backrest.
Make sure that the seat backrest and the rear bench seat/rear seat are engaged before every trip.
NOTE Damage to the seat belt
The seat belt could become trapped and thus damaged when folding back the seat backrest.
Make sure that the seat belt is not trapped when folding back the seat backrest.
Folding back the rear seat backrests
If a seat backrest is not engaged and locked, this will also be shown on the multifunction display on the instrument cluster.
Briefly pull buttons to fold the left or right seat backrest backwards.
to fold the left or right seat backrest backwards. 7-seater: With the ALL button, all rear seat backrests can be folded back together.
The seat folds backwards. Vehicles with a middle seat backrest: the middle seat backrest folds back together with the left seat backrest.
Folding back the middle seat backrest (7-seater)
Fold the seat backrest back until it engages audibly.
Folding back the seat backrest in the third row of seats
In the rear: press the buttons briefly to fold back the left- or right-hand seat backrest.
buttons briefly to fold back the left- or right-hand seat backrest. In the luggage compartment: briefly pull the buttons to fold back the left- or right-hand seat backrest.
buttons to fold back the left- or right-hand seat backrest. Opening or closing the stowage space under the load compartment floor
WARNING Risk of injury due to an open load compartment floor
If you drive when the load compartment floor is open, objects could be thrown around and thereby strike vehicle occupants. There is a risk of injury, particularly in the event of sudden braking or a sudden change in direction.
Always close the load compartment floor before a journey.
Opening
Pull handle upwards.
upwards. Lift the load compartment floor upwards using handle .
. Fold out hook on the underside of the load compartment floor.
Clip hook onto drip rail .
. Closing
Unhook the hook from drip rail and fasten it to the bracket on the underside of the load compartment floor.
and fasten it to the bracket on the underside of the load compartment floor. Fold the load compartment floor downwards and then press handle down until it engages.
down until it engages. Extends/retracts the ball neck fully electrically
WARNING Risk of accident due to the ball neck not being engaged
If the ball neck is not engaged, the trailer may come loose.
Make sure that the ball neck securely engages and locks into place.
NOTE Damage to the fully-electric trailer hitch
The fully-electric trailer hitch could be mechanically damaged by applying additional pressure when the ball neck is being extended or retracted.
Do not make the ball neck extend/retract faster by applying additional pressure.
Requirements:
Ensure the following before extending/retracting the ball neck fully electrically:
The vehicle is secured against rolling away
The range of movement is clear.
The trailer cables or adapter plugs have been removed.
Extending the ball neck fully electrically
Button on the tailgate
Button on the driver's door
To extend:
pull button . Indicator lamp will flash and the Trailer coupling extending…display message will appear on the multifunction display.
The ball neck will extend fully electrically.
Wait until the ball neck has locked in place.
The ball neck is securely locked in place when indicator lamp lights up continuously.
If the ball neck is not securely locked in place, indicator lamp flashes and the Check trailer hitch lock display message appears on the multifunction display.
Retracting the ball neck fully electrically
Pull button .
. Indicator lamp flashes and the message Trailer coupling extending… appears on the multifunction display.
The ball neck will retract fully electrically.
Wait until the ball neck has locked in place.
The ball neck is securely locked in place once indicator lamp goes out.
If the ball neck is not securely locked in place, the indicator lamp flashes and the message Check trailer hitch lock appears on the multifunction display.
Observe the information on the displays on the instrument cluster:
Warning and indicator lamps More
Display messages
Overview of the tie-down eyes in the load compartment
Observe the notes on loading the vehicle More.
The front tie-down eyes are accessible when the third row of seats is in the luggage compartment floor position More.
Overview of the front stowage compartments
WARNING Risk of injury due to objects being stowed incorrectly
If objects in the vehicle interior are stowed incorrectly, they can slide or be thrown around and hit vehicle occupants. In addition, cup holders, open stowage spaces and mobile phone receptacles cannot always retain all objects they contain.
There is a risk of injury, particularly in the event of sudden braking or a sudden change in direction.
Always stow objects so that they cannot be thrown around in such situations.
Always make sure that objects do not protrude from stowage spaces, luggage nets or stowage nets.
Close the lockable stowage spaces before starting a journey.
Always stow and secure heavy, hard, pointed, sharp-edged, fragile or bulky objects in the boot/load compartment.
Observe the notes on loading the vehicle.
Locking and unlocking the glove box
WARNING Risk of injury due to objects being stowed incorrectly
If objects in the vehicle interior are stowed incorrectly, they can slide or be thrown around and hit vehicle occupants. In addition, cup holders, open stowage spaces and mobile phone receptacles cannot always retain all objects they contain.
There is a risk of injury, particularly in the event of sudden braking or a sudden change in direction.
Always stow objects so that they cannot be thrown around in such situations.
Always make sure that objects do not protrude from stowage spaces, luggage nets or stowage nets.
Close the lockable stowage spaces before starting a journey.
Always stow and secure heavy, hard, pointed, sharp-edged, fragile or bulky objects in the boot/load compartment.
Observe the notes on loading the vehicle.
Turn the emergency key a quarter turn clockwise 
(to lock) or anti-clockwise 
(to unlock).
(to lock) or anti-clockwise (to unlock).