Porsche 928 S 1986 Driver Manual page 36

Central Warning Unit
To increase driving and operational safety an
automatic warning system has been deve-
loped that shows the driver, via the unmistake-
able warning light that comes on in the instru-
ment panel, that there is a possible malfunc-
tion. This is done automatically without the
driver having to do anything.
The warning lights for the various functions
are located in the Combi instruments.
32
Should a malfunction occur the central warn-
ing light in the instrument console will come
on. At the same time the light for the individual
function will also come on, indicating what is
malfunctioning.
The function control is divided into two priority
groups. Functions that are essential for
driving and operational safety have prio-
rity 1 - the central warning light flashes to-
gether with the individual warning light.
The following functions have priority 1:
Brake fluid level, Oil pressure, Oil level.
If a malfunction is indicated here the vehicle
must be stopped and turned off immediately.
The fault must be rectified.
Functions that do not require immediate
attention have priority 2 - the central and
individual warning lights come on conti-
nuously.
The following functions have priority 2:
ABS (Anti-lock) brake system, Brake pad
wear, Handbrake, Cooling fluid level, Cooling
fluid temperature, Fuel tank reserve, Screen
washer water level, Brake lights, Tail lights,
Toothed belt tension.
These functions show the need for part re-
placement, re-filling, retensioning the toothed
belt, change of driving mode or release of the
handbrake, but not for an immediate halting
of the journey or visit to a garage.