1. Turn on «wipers».
2. Set the airflow direction switch to or .
A170 Turbodiesel vehicles are equipped with a coolant heater, which achieves accelerated interior heating.
The heater turns on and off automatically depending on the temperature of the coolant and the temperature of the outside air.
If the engine has not reached the operating temperature, then after it is turned off, spontaneous operation of the fan is possible, and a small amount of steam and condensate can escape from under the bottom.