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.

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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. button.

The indicator lamp above the lights up. button lights up.

•► To switch off: press the button. button.

The indicator lamp above the goes out. 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:

    Transporting the vehicle
    The towing eyes or trailer tow hitch can be used to pull the vehicle onto a trailer or transporter if you wish to transport it. Turn the SmartKey to position 2 in the ignition lock. Shift the ...

    Service messages
    Information on the type of service and service intervals (see separate Service Booklet). You can obtain further information from an authorized Mercedes-Benz Center or at http://www.mbusa.com (U ...

    Useful information
    This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differe ...