Porsche 911 Carrera - Manual (Page 144)

General information regarding the
on-board computer functions
Range on remaining fuel
The range on remaining fuel is continuously
recalculated during the journey based on the
fuel level, current consumption and average
consumption. The more the fuel level falls, the
more spontaneously the display reacts. For
this reason, the range on remaining fuel is not
displayed if less than 9 miles (15 kilometers).
If the vehicle’s inclination changes while driving
or refueling, incorrect range information may
temporarily be given.
Note
If the tank is nearly empty and you top up with
only a small quantity of fuel, an accurate range on
remaining fuel is impossible.
Average consumption and average speed
The values displayed are based on the distance
travelled since the last reset to “zero”.
You can set the starting time for a measurement
before or during the trip. Switching the ignition off
does not reset the measurements. It is therefore
possible to collect values over long periods.
Disconnecting the car battery will cause these
memories to be erased.
Tire pressure
The Tire pressure function of the on-board
computer displays the tire pressures dependent
on temperature in the four wheels. You can watch
the tire pressure rise and fall while driving. The
display is only for information. To correct the tire
pressures, always use the displayed values from
the “Info pressure” display in the Tire pressure
menu.
142
Controls, Instruments