2008 Volvo S40 Owner's Manual - Page 56

When the engine is switched off, information on fuel consumption is stored and remains in system memory until the RESET (button C) is pressed again. INSTANTANEOUS This value indicates the current fuel consumption, based on readings taken once per second. When the car is not moving, "----" will be displayed. AVERAGE SPEED This value indicates average speed since the last time the trip computer was reset (by pressing RESET, button C). When the engine is switched off, information on average 64 02 Instruments and controls Trip computer speed is stored and remains in system memory until the RESET (button C) is pressed again. ACTUAL SPEED (Canadian models only) This function provides the driver with an instantaneous conversion of the car's current speed from km/h to m.p.h. NOTE Trip computer readings may vary slightly depending on the circumference of the tires on the car, tire inflation, or driving style. 65 02 Instruments and controls Cruise control Engaging the cruise control function The cruise control buttons are located on the left side of the steering wheel hub. 1. Press the CRUISE button. CRUISE will appear in the function display in the center of the instrument panel. NOTE This does not set the vehicle's speed.