Volvo 2008 S40 Owner's Manual page 55

The trip computer stores information gathered from several systems in your car and has five menus (six on Canadian
models) that can be shown in the information display.
MILES TO EMPTY TANK
AVERAGE (average fuel consumption)
INSTANTANEOUS
AVERAGE SPEED
ACTUAL SPEED (current speed in m.p.h., Canadian models only)
STC/DSTC (see page
NOTE
Warning messages from the car's monitoring systems will override the trip computer function.
If a warning message is shown in the information display while you are using the trip computer:
1. Acknowledge the message by pressing the READ button (A).
2. Press button A again to return to the trip computer function.
Controls
The trip computer functions can be accessed by twisting INFO (B) one step at a time in either direction. Twisting a
final time returns you to the original function.
Resetting
AVERAGE (average fuel consumption) and
1. Select one of these functions.
2. Press RESET (C).
Holding RESET for at least five seconds resets both functions at the same time.
MILES TO EMPTY TANK
This function shows the approximate distance that can be driven on the fuel remaining in the tank. This calculation is
based on average fuel consumption during the last 20 miles (30 km) of driving and the amount of fuel remaining in the
tank when the reading was taken. When the driving distance on current fuel reserve is less than 12 miles (20 km), "----
" will be displayed in the information display.
AVERAGE
This value indicates fuel consumption since the last time the trip computer was reset (by pressing RESET, button C).
(current fuel consumption)
149)
AVERAGE SPEED can be reset.