Porsche 911 Carrera Owner's Manual page 243

with the change intervals stated in the brochure
"Maintenance".
Warning lights
Indication
Warning light USA
Warning light Canada
– The warning lights on the instrument panel
and on the on-board computer indicate an
insufficient brake fluid level.
– If the warning light lights up on the instrument
panel and the warning message appears on
the on-board computer in combination with a
larger pedal travel, a brake circuit may have
failed.
If the warning lights should light up when
driving:
Stop immediately in a suitable place.
Do not continue driving. Consult an authorized
Porsche dealer.
241
Maintenance, Car Care