Mercedes Benz 2009 M-Class User Manual

Page of 585
226
Controls in detail
3-zone automatic climate control*
Adjusting air distribution
Use the air distribution controls
3, h, 
or
j for the driver’s side, or 7, b, or c 
(
page 222) for the passenger side to 
separately adjust the air distribution on 
each side of the passenger compartment.
The following symbols are found on the 
buttons:
Press the desired air distribution but-
ton (
page 222).
The indicator lamp on the desired but-
ton goes out.
Adjusting the air distribution for the 
center and side air vents
Opening the center air vents
Turn thumbwheels
4 and 7 
(
page 220) to the right.
The corresponding center air vents on 
the left and right are open.
Closing the center air vents
Turn thumbwheels
4 and 7 
(
page 220) to the left.
The corresponding center air vents on 
the left and right are closed.
Opening the side air vents
Turn thumbwheels
3 and 8 
(
page 220) to the right.
The corresponding side air vents on the 
left and right are open.
Closing the side air vents
Turn thumbwheels
3 and 8 
(
page 220) to the left.
The corresponding side air vents on the 
left and right are closed.
Symbol
Function
Driver’s 
side
Passen-
ger side
6
Z
Directs air to the 
windshield and side 
air vents
7
a
Directs air through 
the center, side and 
rear passenger 
compartment air 
vents
8
Y
Directs air to the 
footwells and side 
air vents