Information System - Porsche 928 ST1991 Owner's Manual

Information system

The information system helps enhance road
safety and operational reliability. Automati-
cally and without any action on the part of
the driver, it provides notification of faults in
a number of systems. In the event of a sys-
tem malfunction, a symbol appears in the in-
strument cluster display, accompanied by
an explanatory worded message.
The text appears in the language assigned
to the national version of the vehicle. Your au-
thorized Porsche dealer can change the in-
formation system to several languages
stored in the system. However, the originally
input language always appears after the bat-
tery has been disconnected.
The messages have been subdivided into
three priority groups:
Priority I
Faults which are detrimental to road safety
and operational reliability are indicated by
red lettering and flashing symbols. Stop and
rectify the fault immediately.
Priority II
Faults which could cause damage to your
Porsche are indicated by red lettering and a
symbol which does not flash. The fault in
question must be rectified at the earliest
possible opportunity.
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Priority III
If a part has to be changed or the water in
the washing-water reservoir topped up, the
fault is indicated by red lettering and a sym-
bol which does not flash. In this event, it is
not necessary to interrupt the journey im-
mediately or seek the assistance of an au-
thorized Porsche dealer.
If the oil level is too low, the corresponding
fault message will appear as soon as the ig-
nition is switched on, irrespective of whether
the engine is started or not. The other fault
messages can appear once the engine has
been started and the brake pedal pressed.
If the park brake is not released the warning
lamp remains lit, accompanied by the fault
message at speeds above 10 km/h (6 mph).
Fault acknowledgement
Pulling the control lever acknowledges the
fault message and cancels the worded mes-
sage. The messages issued for priority I and
II faults are repeated 15 or 30 minutes and
after acknowledgement after every engine
start until the fault in question is rectified.
Messages for priority III faults are issued
once only. If the fault in question is not re-
ctified, the message reappears every time
the engine is restarted only.
Faults of different priorities occurring simul-
taneously are displayed in sequence. Once
one fault is acknowledged, other faults of the
same priority can be displayed, followed by
those of lower priority. Each fault message
must be acknowledged in turn, before the
on-board-computer and auxiliary functions
can be called up.