Activating/deactivating the residual heat function
The residual heat function is only available in vehicles for Canada with automatic climate control.
It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set.
The blower will run at a low speed regardless of the airflow setting.
If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.
It is possible that the residual heat function may be activated automatically an hour after the SmartKey is removed. The vehicle is then ventilated for 30 minutes to dry the air-conditioning system.
•► Turn the SmartKey to position 0 in the ignition lock or remove it.
•► To activate: press the
button.
The indicator lamp above the 
button
lights up.
•► To switch off: press the
button.
The indicator lamp above the 
button
goes out.
Residual heat is deactivated automatically:
- after about 30 minutes
- when the ignition is switched on
- if the battery voltage drops
- if the coolant temperature is too low
See also:
Deactivating the HOLD function
The HOLD function is deactivated automatically if:
• you accelerate and the transmission is in position D or R.
• you shift the transmission to position P.
• you apply the brakes again with a ...
Setting the time
Select Vehicle in the main function bar by
turning the COMAND controller and
press to confirm.
Select System by turning the
COMAND controller and press to
confirm.
Select Time by ...
12 V sockets
Points to observe before use
The sockets can be used for accessories, e.g.
lamps or mobile phone chargers with a
maximum current draw of 180 W (15 A).
If you use the sockets for long periods when ...