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 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.
Notes on driving with a roof load
Distribute roof load and cargo evenly and place heavy objects at the bottom. You should also observe the notes on loading the vehicle More.
Drive carefully, avoiding abrupt pulling away, braking and steering, as well as fast cornering.
When transporting roof loads and when the vehicle is fully loaded or fully occupied, select drive programs
and 
. These are designed to focus on stability More.
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 left and right seat backrests are not engaged and locked in place, this will be shown on the multifunction display on the instrument cluster. A warning tone will also sound.
If the centre seat backrest is not engaged and locked in place, the lock verification indicator will be red.
Requirements:
To fold the centre seat backrest forwards: the centre seat backrest has been unlocked.
You can fold the centre and outer seat backrests forwards separately.
You can unlock the outer seat backrests electrically. The buttons for unlocking are located in the load compartment.
Insert seat belt tongue 
into seat belt strap holder 
.
into seat belt strap holder . 
If necessary, when the seat backrest in the rear is folded forward, the corresponding front seat will move forward slightly to prevent a collision.
If necessary, fully insert the head restraints in the rear seat backrest.
To fold the left and right seat backrests forward:
pull right or left release handle 
. 
To fold the centre seat backrest forwards:
pull release catch 
of seat backrest 
forwards. Fold seat backrest forwards.
forwards. If necessary, reset the driver's or front passenger seat.
Folding back the rear seat backrest
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 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 left and right seat backrests are not engaged and locked in place, this will be shown on the multifunction display on the instrument cluster. If the centre seat backrest is not engaged and locked in place, the red lock verification indicator will be visible.
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 in place, 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 in place, 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. To close:
fold the load compartment floor down. Extending and 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.
NOTE Increased risk of damage to property due to folded-out ball neck
When the trailer is not coupled or the bicycle rack is attached, fold in the ball neck or, in the case of a fully electric trailer hitch, retract the ball neck.
NOTE Damage to the vehicle due to incorrect use of the trailer hitch
When the vehicle is recovered by being pulled out with the trailer hitch, this can damage the vehicle.
Use the trailer hitch only for pulling a trailer or attaching approved carrier systems (e.g. a bicycle rack).
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
Pull button .
. Indicator lamp will flash and the message Trailer coupling in motion 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 in motion 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 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 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 brackets 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 in such a way 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.
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).