Mercedes-Benz M-Class 2012 Owners Manual - Manual (Page 101)

X Pull the left or right release lever ;
upwards in the direction of the arrow until
the relevant backrest : is fully released.
X
Pull the backrest : forwards in the
direction of the arrow and allow it to
engage.
X Lean back firmly against the backrest : to
ensure it is engaged.
Adjusting the four-way lumbar
support
You can adjust the contour of the front seat
backrests individually to provide optimum
support for your back.
: To raise the backrest contour
; To soften the backrest contour
= To lower the backrest contour
? To harden the backrest contour
Switching the seat heating on/off
Switching on/off
G WARNING
Repeatedly setting the seat heating to level
3 may result in excessive seat temperatures.
The health of passengers that have limited
temperature sensitivity or a limited ability to
react to excessively high temperatures may
be affected or they may even suffer burn-like
injuries. Therefore, do not use seat heating
level 3 repeatedly.
The three red indicator lamps in the button
indicate the heating level you have selected.
i If the battery voltage is too low, the seat
heating may switch off.
Driver's and front-passenger seat
Rear-compartment seats
The system automatically switches down
from level 3 to level 2 after approximately
eight minutes.
The system automatically switches down
from level 2 to level 1 after approximately ten
minutes.
The system automatically switches off
approximately 35 minutes after it is set to
level 1.
X Make sure that the SmartKey is in position
1 or 2 in the ignition lock.
X
To switch on: press button : repeatedly
until the desired heating level is set.
X To switch off: press button : repeatedly
until all the indicator lamps go out.
Seats
99
Seats,
steering
wheel
and
mirrors
Z