Mercedes-Benz ML320 Cdi Operator's Manual page 209

Controls in detail
Climate control
208
1 Temperature control, left
2 Air distribution and air volume
(automatic, manual)
3 Front defroster
0 USA only
P Canada only
4 Increasing air volume
5 Air distribution (directs air through
the windshield and side air vents)
6 Rear climate control* on/off
Air supply for rear passenger
compartment on/off
: USA only
< Canada only
7 Temperature control, right
8 AC cooling on/off
Residual heat/ventilation
9 Air distribution (directs air through
center and side air vents)
a Air distribution (directs air through
the footwells and side air vents)
b Air volume display
c Decreasing air volume
d Rear window defroster
1 USA only
F Canada only
e Air recirculation
f Interior temperature sensor
g Climate control on/off