Attaching a roof luggage rack
WARNING Risk of accident due to exceeding the maximum roof load
The vehicle centre of gravity and the usual driving characteristics as well as the steering and braking characteristics alter.
If you exceed the maximum roof load, the driving characteristics, as well as steering and braking, will be greatly impaired.
Never exceed the maximum roof load and adjust your driving style.
You will find information on the maximum roof load in the "Technical data" section in the printed Owner's Manual.
NOTE Vehicle damage from non-approved roof luggage racks
The vehicle could be damaged by roof luggage racks that have not been tested and approved for Mercedes-Benz.
Use only roof luggage racks tested and approved for Mercedes-Benz.
Depending on the vehicle equipment, ensure that the sliding sunroof can be fully raised when the roof luggage rack is fitted.
Depending on the vehicle equipment, ensure that the tailgate can be fully opened when the roof luggage rack is fitted.
Position the load on the roof luggage 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 due to non-approved roof luggage racks
The panorama sliding sunroof may be damaged by the roof luggage rack if you attempt to open it when using a roof luggage rack not tested and approved for Mercedes-Benz.
When a roof luggage rack is fitted, open the panorama sliding sunroof only if this has been tested and approved for Mercedes-Benz.
The panorama sliding sunroof may be raised to allow ventilation of the vehicle interior.
Secure the roof luggage rack to the roof railing.
Observe the manufacturer's installation instructions.
Folding the rear seat backrest forwards
WARNING Risk of accident if the rear bench seat, rear seat and seat backrest are not engaged
The rear bench seat, rear seat and seat backrest may fold forwards, even while the vehicle is in motion.
As a result, the vehicle occupant will be pressed into the seat belt with increased force. The seat belt will not be able to protect as intended and could cause additional injury.
Objects or loads in the boot or load compartment cannot be restrained by the seat backrest.
Make sure that the rear bench seat, the rear seat and the seat backrest are engaged before every trip.
If the seat backrest is not engaged and locked, this will be shown on the multifunction display on the instrument cluster.
Requirements:
The rear seat backrest head restraints are fully inserted.
You can fold the centre and outer seat backrests forwards separately.
The right seat backrest can be folded forwards only together with the centre seat backrest.
The outer seat backrests are unlocked electrically.
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.
To fold the left and right seat backrests forward:
pull right or left button 
. 
To fold the centre seat backrest forwards:
pull release catch 
of seat backrest 
forwards. Fold seat backrest forwards.
forwards. Folding back the rear seat backrest
WARNING Risk of accident if the rear bench seat, rear seat and seat backrest are not engaged
The rear bench seat, rear seat and seat backrest may fold forwards, even while the vehicle is in motion.
As a result, the vehicle occupant will be pressed into the seat belt with increased force. The seat belt will not be able to protect as intended and could cause additional injury.
Objects or loads in the boot or load compartment cannot be restrained by the seat backrest.
Make sure that the rear bench seat, the rear seat and the seat backrest are engaged before every trip.
If the seat backrest is not engaged and locked, 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 with the load compartment floor open, objects could be flung around and hit vehicle occupants as a result. 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
The stowage space under the load compartment floor is available for all vehicles except hybrid vehicles.
Pull handle upwards.
upwards. Lift the load compartment floor up using handle .
. Fold out the hook on the underside of the load compartment floor.
Clip the hook onto drip rail .
. Closing
Unhook the hook from drip rail and fasten it to the holder on the underside of the load compartment floor.
and fasten it to the holder on the underside of the load compartment floor. Fold the load compartment floor down and then press handle down until it engages.
down until it engages. Vehicles with a folding bench seat: the luggage compartment floor is below the seat cushion More.
Extending or 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 swivel range 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 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.
When indicator lamp is continuously lit, the ball neck is securely locked in place.
If the ball neck is not securely locked in place, indicator lamp will flash and the 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 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.
When indicator lamp goes out, the ball neck is securely locked in place.
If the ball neck is not securely locked in place, indicator lamp will flash and the 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 within.
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 within.
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).