Heating/air conditioning and ventilation 101 X Turn air-distribution control D to position z . Demisting (maximum heating output) X To set the temperature: press tempera- ture button H , f or g repeatedly until the desired temperature is set. X To switch off: press button F again. The indicator lamp next to button F goes out. X Press and hold temperature button H f until the maximum temperature is set. All bars light up in display G . X Turn airflow control C to position 4 z . X If required, switch on the windscreen heat- ing ( Y page 90). Example settings X Close the centre air vents ( Y page 101). X Make sure that the air-conditioning system is switched on.
Cooling X Direct the side air and side window vents to the side windows ( Y page 101). X Set the airflow, air distribution and temper- ature as desired. i Mercedes-Benz recommends cooling the temperature in the vehicle interior down to a maximum of 6 to 8 † below the outside temperature. Climate control Residual heat The vehicle interior can still be heated for a certain time after the engine is switched off. The heating time depends on the set temper- ature. X Close the windows. X Ensure that the key is in position 2 in the ignition lock. X At high outdoor temperatures: direct the air distribution towards the windscreen. X Switch on mixed-air operation ( Y page 100).
X Press temperature button H f or g repeatedly until the desired temperature is set. X Turn airflow control C to the desired posi- tion. X Make sure that the air-conditioning system is switched on. Dehumidifying X Make sure that air-recirculation mode is switched off ( Y page 100). X Set the air vents as required. Air-conditioning system X Set the airflow, air distribution and temper- ature as desired. Switching the air-conditioning system on/off X Close the windows. X To switch on: make sure that the engine is running. Adjusting the air vents X Press button F . The indicator lamp next to button F lights up.
Either the entire cab can be ventilated via fixed air vents or just the windscreen or foot- well can be targeted. The adjustable centre/ side air vents can be used for independent, targeted ventilation of the driver's worksta- tion and the co-driver seat. Keep all the air vents and the ventilation grille in the cab free General notes Z