Mercedes-Benz S350 TURBODIESEL Operator's Manual page 21

Automatic Climate Control
Left side passenger compartment
1 Temperature selector
2 Temperature display
Automatic mode
3
Air distribution buttons
4
5 Defrost
6 Residual engine heat utilization
Air recirculation
7
Air volume selector
8
Economy
9
Selection switch
10
Off
11
Right side passenger
compartment:
12 Temperature selector
13 Temperature display
Automatic mode
14
Air distribution buttons
15
21