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 backrests are not engaged and locked in place, the lock verification indicator will be red.
Requirements:
The centre seat backrest has been unlocked.
The centre and outer seat backrests can be folded forwards.
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 backrests:
if necessary, fully insert the seat backrest head restraints More. Pull the release lever 
.
. 
Ensure that the centre seat backrest is not locked.
Centre seat backrest:
pull release catch 
of seat backrest 
forwards. Fold the corresponding seat backrest forwards.