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 boot lid 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 covers
The covers may be damaged and scratched when being opened.
Do not use metallic or hard objects.
Carefully fold covers 
upwards in the direction of the arrow.
upwards in the direction of the arrow. Secure the roof rack to the anchorage points under 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 accident and 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. during sudden braking or in the event of an accident.
If this were 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 would not be able to provide the intended protection and could cause additional injury.
Objects or loads in the boot 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.
Requirements:
The rear seat backrest head restraints are fully inserted.
If the seat backrest is not engaged and locked, this will be shown on the multifunction display on the instrument cluster.
The centre and outer seat backrests can be folded forwards separately.
Left and right seat backrests:
pull release lever . 
Ensure that the centre seat backrest has been unlocked.
Centre seat backrest:
pull release catch 
of seat backrest 
forwards. Fold the corresponding seat backrest forwards.
Folding the rear seat backrest back
WARNING Risk of accident and 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. during sudden braking or in the event of an accident.
If this were 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 would not be able to provide the intended protection and could cause additional injury.
Objects or loads in the boot 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.
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.
Centre seat backrest: if the seat backrest is not engaged and locked, red lock verification indicator will be visible.
Opening the stowage space under the boot floor
NOTE Damage to the handle in the boot floor
If the handle in the boot is left protruding, the handle may be damaged.
Unhinge the handle before you close the boot lid and press the handle closed again.
Pull handle up and hook it into drip rail .
up and hook it into drip rail . Securing the ski and snowboard bag in the boot
WARNING Risk of injury due to using the through-load ski bag incorrectly
The through-load ski bag in conjunction with the lashing straps cannot restrain any objects other than skis.
Vehicle occupants could be struck in the event of sudden braking or an accident in the following cases:
if you transport other heavy or sharp-edged objects in the through-load ski bag
if you do not secure the through-load ski bag with the lashing straps
Only store skis in the through-load ski bag.
Always secure the through-load ski bag with the lashing straps so that it cannot move around.
A maximum of four pairs of skis or two snowboards may be transported in the ski and snowboard bag.
Fold the centre rear seat backrest forwards.
Slide the ski and snowboard bag between the outer seat backrests into the rear.
Open zip .
. Load the ski and snowboard bag with the skis or snowboards.
Close zip .
. Pull the tensioning strap tight by the loose end.
Cross lashing straps .
. Engage hooks of lashing straps in tie-down eyes 
. Make sure that the fasteners of hooks are facing upwards.
of lashing straps in tie-down eyes . Make sure that the fasteners of hooks are facing upwards. 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 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 transmission has been shifted to position
or 
. The range of movement is clear.
Only when retracting: ensure trailer cables or adapter plugs have been removed.
Extending/retracting the ball neck fully electrically
Pull switch .
. 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.
Pull switch .
. Indicator lamp will flash and the Trailer coupling extending… display message 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 is securely locked into place once indicator lamp goes out.
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.
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 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). 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 release catch and swing the cover of the armrest upwards.
and swing the cover of the armrest upwards.