Mercedes-Benz M-Class 2006 Owners Manual - Manual (Page 214)

213
Controls in detail
Climate control
Rear air conditioning
Rear climate control panel
1 Left rear center air vent, adjustable
2 Right rear center air vent, adjustable
3 Air distribution and air volume
(automatic, manual)
4 Directs air through the center air vents
5 Directs air through the footwells and
both center air vents
6 Rear air conditioning on/off
Activating rear air conditioning
̈ Press button U.
The indicator lamp on button U
comes on. The temperature, air volume
and air distribution are adjusted
automatically.
i
The residual heat is automatically
turned off:
ț when the ignition is switched on
ț after about 30 minutes
ț if the coolant temperature is too
low
ț if the battery voltage drops