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 for 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 covers
The covers may be damaged and scratched when being opened.
Do not use metallic or hard objects.
Carefully fold the covers 
upwards in the direction of the arrow.
upwards in the direction of the arrow. Secure the roof rack to the anchorage points under the covers .
. Comply with the roof rack manufacturer's installation instructions.
Secure the load on the roof rack.
Folding the rear seat backrest forwards
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.
If the left and right seat backrests are not engaged and locked in place, this will be shown on the multifunction display of the instrument cluster. A warning tone will also sound.
If the centre seat backrest is not engaged and locked, the red lock verification indicator will be visible.
The centre and outer seat backrests can be folded forwards separately.
The outer seat backrests are unlocked electrically. The release buttons are located inside the load compartment.
Insert the seat belt tongue into the seat belt extender 
.
into the seat belt extender . 
If at least one section of the rear seat backrest is folded forwards, the corresponding front seat will move forwards slightly, if necessary, to avoid a collision.
If necessary, fully insert the rear seat backrest head restraints.
Left and right seat backrests:
pull the left or right release handle 
. The corresponding seat backrest will fold forwards.
Centre seat backrest:
pull the release catch 
of the seat backrest 
forwards. Fold the seat backrest forwards.
forwards. If necessary, reset the driver's or front passenger seat.
Folding back the rear seat backrest
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 caused by trapping the seat belt when folding back the seat backrest
The seat belt could become trapped and thus be damaged when the seat backrest is folded back.
Make sure that the seat belt is not trapped when folding back the seat backrest.
Move the driver's or front passenger seat forwards, if necessary.
Fold the corresponding seat backrest back until it engages.
back until it engages. Left and right seat backrests: if the seat backrest is not engaged and locked, this will be shown on the multifunction display on the instrument cluster.
A warning tone will also sound.
Centre seat backrest: if the seat backrest is not engaged and locked, the red lock verification indicator will be visible.
Opening the stowage space under the load compartment floor
To open:
Lift the load compartment floor with handle and fold it over at the hinge in the centre of the load compartment floor. 
Fold out hook on the underside of the load compartment floor.
on the underside of the load compartment floor. 
Attach hook to top seal of the load compartment.
to top seal of the load compartment. To close:
Remove hook from top seal of the load compartment. Secure hook to the bracket on the underside of the load compartment floor.
to the bracket on the underside of the load compartment floor. Fold the load compartment floor down.
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 all-electric trailer hitch due to additional pressure
The all-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:
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 is continuously lit.
If the ball neck is not securely locked in place, indicator lamp will flash and the Check trailer hitch lock display message will appear 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:
Indicator and warning lamps More
Display messages
Overview of the tie-down eyes
Observe the notes on loading the vehicle 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/unlocking the glove compartment
WARNING Risk of injury due to objects being stowed incorrectly
If you inadequately stow objects in the vehicle interior, they could slip or be tossed around and thereby strike vehicle occupants. In addition, cup holders, open stowage spaces and mobile phone brackets cannot always restrain the objects they contain in the event of an accident.
There is a risk of injury, particularly in the event of sudden braking or a sudden change in direction.
Always stow objects in such a way that they cannot be tossed about in these or similar situations.
Always make sure that objects do not project from stowage spaces, luggage nets or stowage nets.
Close the lockable stowage spaces before starting a journey.
Always stow and secure objects that are heavy, hard, pointed, sharp-edged, fragile or too large in the boot.
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). Opening the stowage compartment in the rear armrest
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.
Press the release catch and swing the cover of the armrest upwards.
and swing the cover of the armrest upwards.