2008 Volvo S40 Owner's Manual - Page 79

The defroster function should be used to remove fog or mist from the inside of the windows. Keeping the windows clean with a commercially available window washing spray will also help prevent fogging or misting. Climate control maintenance Special tools and equipment are required to maintain and carry out repairs on the climate system. Work of this type should only be done by a trained and qualified Volvo service technician. Refrigerant Volvo cares about the environment. The air conditioning system in your car contains a CFC-free refrigerant - R134a. This substance will not deplete the ozone layer. The system contains 1.2 lbs (530 g) R134a (HFC 134a), and uses PAG oil. Passenger compartment filter Replace the cabin air filter with a new one at the recommended intervals. Please refer to your Warranty and Service Records Information booklet, or consult your Volvo retailer for these intervals. The filter should be replaced more often when driving under dirty and dusty conditions. The filter cannot be cleaned and therefore should always be replaced with a new one. NOTE There are different types of cabin air filters. Ensure that the correct type is installed. Display The display above the climate control panel shows the climate settings that have been made. Personal settings There are two functions in the climate system that can be set to your preferences: Blower speed to Auto mode (models with ECC only). Timer controlled recirculation of the air in the passenger compartment. For information about how to make these settings, see the Personal settings section on page 77. 87 03 Climate General information Models equipped with ECC (option) Sensors The sunlight sensor is on the upper side of the dashboard The passenger compartment temperature sensor is located behind the climate system control panel. The ambient temperature sensor is in the driver's side door mirror. The humidity sensor is in the rearview mirror. These sensors should never be obstructed.