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.
Use only 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.
Depending on the vehicle equipment, ensure that when the roof rack is fitted, the tailgate can be fully opened.
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 panorama sliding sunroof caused by a non-approved roof rack
The panorama sliding sunroof may be damaged by the roof rack if you attempt to open it when using a roof rack not tested and approved for Mercedes-Benz.
When a roof rack is fitted, open the panorama sliding sunroof only if this has been tested and approved for Mercedes-Benz.
In order to allow ventilation of the vehicle interior, you can raise the panorama 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 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 seat backrest is not engaged and locked in place, this will be shown on the multifunction display on the instrument cluster.
Requirements:
The rear seat backrest head restraints are fully inserted.
The centre and outer seat backrests can be folded forwards separately.
The right seat backrest can be folded forwards only together with the centre seat backrest.
The outer seat backrests are unlocked electrically. Depending on the equipment, the release buttons are located either in the load compartment or beside the seat backrests.
Button in the load compartment
Vehicles without a memory function: move the driver's or front passenger seat forwards, if necessary.
Vehicles with a memory function: 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.
Left and right seat backrest:
pull the button on the right or left 
. 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. 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.
If the seat backrest is not engaged and locked in place, this will be shown on the multifunction display on the instrument cluster.
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.
Vehicles without a memory function: move the driver's or front passenger seat forwards, if necessary.
Vehicles with a memory function: if at least one part of the seat backrest in the rear is folded back, the corresponding front seat will automatically return to the most recent original position.
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.
Centre seat backrest: if the seat backrest is not engaged and locked, the red lock verification indicator will be visible.
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. Vehicles with folding bench seat: the luggage compartment floor is below the seat cushion More.
Extending/retracting 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
To extend:
pull button . Indicator lamp will flash and the display message Trailer coupling extending… 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 display message Check trailer hitch lock will appear on the multifunction display.
Retracting the ball neck fully electrically
Pull button .
. Indicator lamp will flash and the display message Trailer coupling extending… will appear on the multifunction display.
The ball neck will retract fully electrically.
Wait until the ball neck has locked in place.
The ball neck will be securely locked in place once indicator lamp goes out.
If the ball neck is not securely locked in place, indicator lamp will flash and the display message Check trailer hitch lock will appear on the multifunction display.
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 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). 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.