Mercedes-Benz 2005 M-Class Operator's Manual page 102

Controls in detail
Seats
The rear seats are divided asymmetrically.
To enlarge the cargo compartment you can
adjust the left and right part separately.
The following changes are possible:
moving the seat fore and aft
folding down the backrest
lowering the seat
Adjusting rear seat fore and aft
1 Release lever
Pull release lever 1 in direction of
arrow.
100
Slide seat to the desired position until
it locks in place.
Warning!
Failure to assure that seats are locked into
place could result in an increased chance of
injury in an accident.
Folding down the backrest
1 Lock button
Close cup holder ( page 170) and
ashtray ( page 172) in rear center
console ( page 170).
Move front seats forward. Manual seat
( page 36) or power seat ( page 38).
Slide seat forward.
G
Remove head restraint(s) ( page 95).
Pull lock button 1 up and fold back-
rest forward until it locks in place.
The red backrest lock indicator at lock
button 1 is not visible in the locked
position.
Folding up the backrest
Close cup holder ( page 170) and
ashtray ( page 172) in rear center
console.
Pull lock button 1 up and unfold back-
rest until it locks in place.
Make sure the seat belt is not caught in
the seat.
Check for secure locking by pulling and
pushing on the backrest.