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:

    Active multicontour seats with massage function from the S-Class
    The active multicontour seat package (optional) includes newly developed multicontour seats with comfort head restraints and a two-stage massage function in the backrest that has proven highly suc ...

    Snow chains
    For safety reasons, Mercedes-Benz recommends that you only use snow chains which have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ...

    Cup holder in the rear seat armrest
    Do not sit on or support your body weight on the rear seat armrest when it is folded down, as you could otherwise damage it. Close the cup holder before folding the rear seat armrest up. Othe ...