Porsche 911 Carrera Owner's Manual page 142

Reset
– Reset all,
– Reset average consumption,
– Reset average speed,
– Reset trip counter
Units
– Speedometer km - km/h, miles - mph
– Consumption l/100 km, mls/gal (USA), mpg
(UK), km/l
– Temperature Celsius, Fahrenheit
– Tire pressure bar, psi
140
Controls, Instruments
Display (Select central line of the
on-board computer)
Change display
– Audio information (set radio station)
– Range on remaining fuel
– Empty
Telephone info
When Telephone information is active, incoming
telephone calls are displayed on the on-board
computer.