Adjusting the angle of the rear seat backrests (cargo position)
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, this will be shown on the multifunction display on the instrument cluster.
To enlarge the load compartment, you can adjust the seat backrests so that they are ten degrees steeper (cargo position).
Fold the seat backrest forwards More.
Move bracket 
in the direction of the arrow.
in the direction of the arrow. Push seat backrest 
back to bracket until the backrest engages.
back to bracket until the backrest engages.