Installing and removing the head restraint of the middle rear seat (7-seater)
WARNING Risk of injury due to head restraints which are not fitted or are adjusted incorrectly
If head restraints are not fitted or are adjusted incorrectly, they cannot provide protection as intended.
There is an increased risk of injury in the head and neck area, e.g. in the event of an accident or when braking.
Always drive with the head restraints fitted.
Before driving off, make sure for every vehicle occupant that the centre of the head restraint supports the back of the head at about eye level.
Do not interchange the head restraints of the front and rear seats. Otherwise, you will not be able to adjust the height and angle of the head restraints correctly.
Removal
Release the middle rear seat backrest and fold it forward slightly More.
Pull the head restraint upwards as far as it will go.
Push release knob 
in the direction of the arrow and pull out the head restraint.
in the direction of the arrow and pull out the head restraint. Fitting
Insert the head restraint such that the notches on the bar are on the left when viewed in the direction of travel.
Push the head restraint down until it engages.
Fold the middle rear seat backrest back until it engages.