Mercedes-Benz GLC : Head restraints / Adjusting the head restraints of the rear seats mechanically

To raise: pull the head
restraint up.
To lower: press release
knob
in the direction
of the arrow and push the head restraint
down.
WARNING Risk of accident due to
adjusting vehicle settings while the vehicle
is in motion
You could lose control of the vehicle in the
following situations in particular:
If you adjust the driver's seat, the head
restraints, the steering wheel or the mirror
while the vehicle is in motion...
Removing
Release the rear seat backrest
and fold it forwards
slightly.
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...
Other information:
NOTE Engine damage due to water
ingress
Take care not to point
the water jet
directly towards the air inlet grille below
the hood.
Observe the legal requirements, e.g. in a number
of countries, washing by hand is only permitted
in specially designated wash bays...
If the left-hand rear seat backrest is folded down
and back up again, it may not be possible to pull
out the rear passenger compartment center seat
belt. The seat belt must be released.
Pull the seat belt out approximately 1 in (25 mm) at the seat belt outlet on the seat backrest and then release it again...