Mercedes-Benz S-Class 2019 Operator's Manual page 107

Adjust the head restraint fore-and-aft position so
that it is as close as possible to the back of your
head.
To move forwards: pull the head restraint
#
forwards.
To move backwards: press release knob
#
and push the head restraint backwards.
Adjusting the front-seat luxury head
restraints mechanically
1
To adjust the side bolsters of the head
#
restraint: pull or push right or left-hand side
bolster 2.
To move forwards: pull the head restraint
#
forwards.
Seats and stowing 105
To move backwards: press release knob
#
and push the head restraint backwards.
Adjusting the EASY ADJUST luxury head
restraints on the front seats mechanically
To adjust the side bolsters of the head
#
restraint: pull or push right or left-hand side
bolster 1.
% The fore-and-aft position of the head
restraint will be adjusted automatically when
you adjust the backrest using the buttons on
the door control panel.
1