Applies to: vehicles with plug-in hybrid drive
Your vehicle is equipped with either auxiliary air conditioning or auxiliary heating/air conditioning*.
The auxiliary air conditioning or auxiliary heating/air conditioning* is switched on when necessary, depending on the ambient temperature and the temperature selected on the air conditioner console. You can use the infotainment system to activate and deactivate the air conditioning immediately link► or to program a timer link►.
Auxiliary air conditioning
Applies to: vehicles without auxiliary heating
The auxiliary air conditioner regulates the temperature in the vehicle interior and is powered electrically. It is only switched on if the high-voltage battery is sufficiently charged and there is enough fuel in the tank.
Auxiliary heating/air conditioning*
Applies to: vehicles with auxiliary heating
The auxiliary heating/air conditioning* regulates the temperature inside the vehicle using either electric power only, or the fuel in the vehicle s tank. For the auxiliary heating/air conditioning* to operate electrically, the high-voltage battery must be sufficiently charged, and there must be enough fuel in the tank. If the high-voltage battery charge is too low but there is sufficient fuel in the tank, the auxiliary heating/air conditioning runs on the fuel in the tank only.
The 
symbol appears in the air conditioner control console when the auxiliary heating is on.
symbol appears in the air conditioner control console when the auxiliary heating is on.
If one of the auxiliary heating/air conditioning timers is programmed, the 
/
symbols remains permanently lit until the departure time is reached.
/ symbols remains permanently lit until the departure time is reached.- The auxiliary heating* must not be allowed to run when the vehicle is in a confined space – risk of poisoning!
- Never have the auxiliary heating* switched on when refuelling the vehicle – risk of fire!
- Because of the high temperatures which occur when the auxiliary heating* is running, make sure when parking the car that the exhaust outlet under the car is not obstructed in any way, and that the exhaust gases do not come into contact with flammable materials.
Note
- At low outside temperatures some visible water vapour may form in the engine compartment. This is a normal phenomenon, and no reason for concern.
- The air conditioning system heats/cools the interior to the temperature you last selected on the air conditioner control console link►.
- If the auxiliary air conditioning is active, the charging status of the high-voltage battery may decrease even when it is being charged.
- The air conditioner will not switch on or will switch itself off earlier than intended if the high-voltage battery charge or the fuel level is too low, irrespective of whether the vehicle is being charged at this time.