2010 Volvo S40 Owner's Manual - Page 73

02 Instruments and controls Right-side steering wheel lever - Rain sensor* 3. Press button B (see page 72). The rain sensor symbol will appear in the lower display. - Thumb wheel The thumb wheel is used to set the wiper interval when intermittent wiping is selected, or the sensitivity to the amount of rain on the windshield when the rain sensor is selected. Move the wheel upward or downward to increase/ decrease wiper speed when the intermittent function is selected, or to increase/decrease the optional rain sensor's sensitivity when the this function is activated. 02 Manual deactivation The rain sensor can be deactivated by: Pressing button (B). or Moving the windshield wiper lever down. NOTE G031469 The rain sensor function will remain activated if the lever is briefly moved up to activate the "manual sweep" function. The rain sensor regulates windshield wiper speed according to the amount of water on the windshield. The sensitivity of the rain sensor is adjusted by moving the thumb wheel (C in the illustration on the previous page) up (the wipers will sweep the windshield more frequently) or down (the wipers will sweep the windshield less frequently). CAUTION The rain sensor should be deactivated when washing the car in an automatic car wash, etc. If the rain sensor function is left on, the wipers will start inadvertently in the car wash and could be damaged. Automatic deactivation The rain sensor is deactivated automatically in the following situations: On/Off Activating the rain sensor 1. Switch on the ignition. 2. Put the windshield wiper lever in position 0. • When the key is removed from the ignition. • Five minutes after the ignition is switched off if the key is left in the ignition. * Option/accessory, for more information, see Introduction. 73