For Viano Marco Polo WESTFALIA ,THERMOTRONIC automatic climate control, available as an standard equipment, delivers additional comfort,keeps you comfortable, even on long journeys. Its enhanced sensor technology offers automatic temperature and airflow adjustment, a sun sensor and a recirculation switch, which automatically closes ventilation flaps if the outside-air quality deteriorates. An optional auxiliary heater provides warmth as and when required and can be activated by remote control.