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.

speed The blower will run at a low speed regardless of the airflow setting.

heat function If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.

0 in the ignition lock or remove it. Turn the SmartKey to position 0 in the ignition lock or remove it.
button. To activate: press the The indicator lamp in the button button.
The indicator lamp in the lights up. button lights up.
button. To switch off: press the The indicator lamp in the button button.
The indicator lamp in the goes out. button goes out.

automatically: 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:

    Activating/deactivating
    - To activate: press the button. The indicator lamp in the button lights up. - To deactivate: press the button. The indicator lamp in the button goes out. The cooling with air dehumid ...

    Applying automatically
    Your vehicle's electric parking brake is automatically applied if DISTRONIC PLUS or the HOLD function bring the vehicle to a standstill, or are engaged to keep the vehicle stationary. In addit ...

    Override feature for the rear side windows
    WARNING When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window. For the r ...