Porsche 911 Turbo Manual page 92

f The on-board computer display returns to the
"Stop timing/Interm. time" selection after a
short period.
f You can stop the stopwatch or measure
another intermediate time or a new lap.
Note for PCM:
If you wish to store the lap time in the PCM, the
performance display in the "Trip/Sport display/
Begin trip" menu of the PCM must be selected.
92
Controls, Safety, Instruments