e date and time set in the vehicle are correct Time 
Open the Auxiliary heater menu. 
Touch the Set function button. 
Select one of the memory locations for a Departure time. 
Touch the Activate function button. 
Manual air conditioning system: the programmed departure time determines the time at which 
the auxiliary heater or ventilation should switch off. The point at which the heating or ventilation 
process starts is determined depending on the programmed running time. 
Climatronic: on the basis of the programmed departure time, the vehicle automatically 
calculates the start time for heating or ventilation to the currently set temperature depending on 
the outside temperature. 
Press the Running time function button under Adjust in order to select the running time when the 
auxiliary heater is switched on using the immediate heat button  or remote control. 
Checking programming 
If a departure time has been activated, the LED in the immediate heat button  will light up on the 
Climatronic control panel for approximately 10 seconds after the ignition is switched off. 
 
WARNING 
Never program the auxiliary heating system so that is switched on and run in unventilated or 
enclosed spaces. Among other things, the emissions from the auxiliary heater contain carbon 
monoxide, which is an odourless and colourless poisonous gas. Carbon monoxide can cause people 
to lose consciousness. It can also cause death. 
Remote control 
 
Fig. 93 Auxiliary heater: remote control (left) with battery compartment (right). 
First read and observe the introductoryinformation and safety warnings