Mercedes-Benz 2009 GL320 BlueTEC Operator's Manual page 240

Controls in detail
Loading and storing
Two buttons are located on the passenger-
side in the cargo compartment.
Example, button for the right third-row seats
Button for returning third-row seats to
1
upright position
Button for folding the third-row seats
2
X
Push in the head restraints of the third-row
seats all the way ( Y page 104).
i It is only possible to fold the third-row
seats down when the tailgate is open.
X
Remove cargo compartment cover blind
( Y page 239).
X
Press and hold button for each side until
2
the third-row seats are fully folded.
The cargo compartment is fully extended.
238
If a third-row seat is not engaged properly, for
example, the message 3rd Row Of Seats-
Right Not Locked appears in the
multifunction display ( Y page 148).
X
Press and hold button again, until the
2
message disappears.
Returning seats to their original position
G Warning!
Make sure all seats are properly locked in
position before driving off. Do not drive with
seats not properly locked.
Never ride in a moving vehicle with the seat
not properly locked as this can be
dangerous. The seat could move forward
and the seat backrest could fold. You could
slide under the seat belt during braking,
vehicle maneuvers, or in an accident. If you
slide under it, the seat belt would apply
force at the abdomen or neck. That could
cause serious or even fatal injuries. Never
ride in a moving vehicle with the seat not
properly locked as this can be dangerous.
The seat could move forward and the seat
backrest could fold. You could slide under
the seat belt during braking, vehicle
maneuvers, or in an accident. If you slide
under it, the seat belt would apply force at
the abdomen or neck. That could cause
serious or even fatal injuries.
The seat backrest and seat belt provide the
best restraint when the wearer is in a nearly
upright position and the seat belt is
properly positioned on the body.
Step 1:
X
Return third-row seats to its original
position ( Y page 236).