Porsche 911 CARRERA - 2003 Manual page 91

General information regarding the
on-board computer functions
Range on remaining fuel
The range on remaining fuel is continuously
recomputed while driving based on fuel level,
current consumption and average consumption.
The more the fuel level falls, the more sponta-
neously the display reacts. For this reason,
range on remaining fuel is not displayed if less
than 15 kilometres (9 miles).
If the vehicle's inclination changes while driving
or refuelling, incorrect range information may
temporarily be given.
Note
If the tank is nearly empty and you add only a
small quantity of fuel, this cannot be used to
calculate the range on remaining fuel.
Average consumption and average speed
The displayed values 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. Values can thus be collected
over long periods.
Disconnecting the car battery clears these
memories.
Outside temperature
The
outside temperature display does not indi-
cate, if ice is on the road.
Even if a temperature above 32°F (O°C) is dis-
played, ice may still form on the road, for in-
stance on bridges or when the road passes
through a heavily shaded area.
Controls, Instruments 91