Mercedes-Benz 2009 CL-Class Operator's Manual page 310

Controls in detail
Seats
adjusting could cause the driver to lose
control of the vehicle.
Rear seat head restraints
G Warning!
For safety reasons, always drive with the
rear head restraints in the upright position
when the rear seats are occupied.
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
G Warning!
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint in such a way that
it is as close to the head as possible and the
center of the head restraint supports the
back of the head at eye level. This will
reduce the potential for injury to the head
and neck in the event of an accident or
similar situation.
With a rear seat occupied, make sure to
move the respective head restraint up from
the lowest non-use position and have the
occupant adjust the head restraint
properly.
308
Do not drive the vehicle without the seat
head restraints installed when the rear
seats are occupied. Head restraints are
intended to help reduce injuries during an
accident.
G Warning!
Make sure the rear seat head restraints
engage when placing them upright
manually. Otherwise their protective
function cannot be ensured.
The back of the head will not be supported
in the event of a collision. That could cause
serious or even fatal injuries. Rear seat
occupants can be seriously injured or
killed.
Folding rear seat head restraints back
The rear seat head restraints can be folded
backward for increased visibility.
Head restraint release switch
1
X
Switch on the ignition.
X
Press switch in the front center console
1
briefly.
The head restraints will fold backward.
Placing rear seat head restraints
upright
i
When fasten a rear seat belt, the
respective rear seat head restraint places
upright automatically.