Contents: Actions before turning on the…↡ Setting the time ↡ Setting the time and day for turning…↡ Heating system programming ↡ Switching off programmable heating ↡ Quick start of the heating system ↡ Instructions ↡
An independent heating system can operate together with the vehicle's heating system regardless of engine operation.
An independent heating system is used to heat the car interior before or during driving, as well as in cases where the main heating system of the car is not working efficiently enough, as well as to defrost the windows and heat the engine coolant.
When starting the engine at very low outside temperatures, the independent heating system can be switched on immediately or at a preset time.
1 – The yellow control LED lights up when the preselect mode is activated.
2 – The green control LED lights up when the independent heating system is operating.
3 – Display for showing the current time, as well as for showing the week and the time of switching on of the independent heating system.
The time of switching on of the independent heating system is the first switching on.
The time of switching on of the independent heating system is the second switching on.
Time of day and day of the week.
Immediate activation of the independent heating system.
Setting the current time of the day of the week and the time to turn on the heating system (back).
Rearrangement of the current time of the day of the week and the time of switching on the heating system (forward).
Actions before turning on the heating system
Do not set the air flow distributor to the position
.
Set the air flow control lever to position 1. When you turn on a higher mode, the car's interior will warm up much better, but the load on the battery will also increase.
Use the temperature control knobs to set the desired temperature in the car. Usually, the temperature in the car is set automatically to 22°C.
If the car is equipped with an automatic ventilation system, you must press one of the buttons of this system (preferably the button
).
Setting the time
Press and hold the button
, and the time will appear on the display.
To adjust the time, press the button simultaneously
and 
or 
.
By briefly pressing the buttons, the time is adjusted in 1-minute increments.
Setting the time and day for turning on the heating system
It is possible to program one or two heating system activations at the required time.
Press button 1 or 2, the yellow control LED will light up. The display will show the program number and for 20 seconds the time at which the heating system is scheduled to turn on will be shown. When the display shows the turn-on time, it can be adjusted by pressing the button
or 
.
Heating system programming
Press button 1 or 2, the yellow control LED 1 will light up. The display will show the time at which the independent heating system will be switched on. After programming the heating system, two control LEDs will light up, 1 yellow and 2 green.
[Material taken from a web resource mercedesman]
The time period before the programmable switching on of the independent heating system is no more than 60 minutes.
Switching off programmable heating
When the green control LED is lit, press the button
, the green LED will go out and the yellow control LED will light up 1. Press the programming button, the number of which must match the program number on the display.
The yellow LED will go out. After 60 minutes, the independent heating system will automatically switch off.
Quick start of the heating system
Click the button
, and the green control LED will light up. The independent heating system will turn on after 30 seconds.
Instructions
When the engine is off, to reduce the use of battery energy, it is recommended to turn on the independent heating system for the minimum required time and it is not recommended to turn on the system several times in a row.
When the independent heating system is operating and the key is in the ignition switch in position 0 or 1, or is removed from the ignition switch altogether, the fan turns on only when a certain coolant temperature is reached.
After disconnecting the battery terminals, the current time will start flashing on the display. In this case, it is necessary to set the current time and program the independent heating system.
If the green control LED goes out when the independent heating system is switched on and the P symbol appears on the display, there is a fault in the heating system. In this case, switch on the independent heating system again. If the green control LED goes out again, you must contact a Mercedes-Benz service station for diagnostics and repair of the heating system.