Porsche 928 S4 – Owner’s Manual |
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Model Year 1987 From
the “Porsche 928 S4 Owner’s Manual”, available from 928 Specialists. |
Light Switch – with ignition on
0
lights off 1
parking lights on (2 front/2 rear) 2
headlights on and raised In
positions 1 and 2, the following lights are also on: tail
lights instrument
illumination shift
pattern illumination for automatic transmission selector lever When
you open the door while the lights are on, the gong will sound. It is your reminder to switch off the
lights. Instrument
illumination control With
headlights on, the brightness of the instrument illumination can be adjusted
by turning the thumbwheel on the left side underneath the instrument cluster. Fog lights
With
headlights on, the fog lights can be turned on or off by depressing the
switch. The switch is
illuminated when the fog lights are on. Trip odometer
The
trip odometer in the lower part of the speedometer can be turned back to zero
by depressing the switch. Tachometer
The
transistorized tachometer operates on the pulse count principle and shows engine
speed in revolutions per minute (rpm). The
red mark at the end of the scale indicates the maximum permissible engine
rpm. Before reaching this area,
the next higher gear should be selected. Earlier shifting saves fuel. Shift
to the next lower gear when the engine rpm drops below 1500 rpm. Indicator
system for position of gearshift Whenever the ignition is switched on, or the vehicle lights are switched on, the position of the gearshift lever lights up in the display field of the tachometer. The
display goes off when the key is removed or when the vehicle lights are
switched off. Speedometer
The
speedometer indicates driving speed per hour. In
USA:
miles and kilometers per hour In
Canada:
kilometers per hour The
upper odometer records total distance driven and cannot be turned back. The
trip odometer in the lower part of the instrument can be turned back to zero by
depressing the odometer reset switch on the lower left side of the instrument
cluster. High
beam indicator light The
blue light in the instrument cluster will light up when the switch lever is
pushed forward. The blue light
will go out when switching to low beam. Turn signal indicator light
The
green indicator light in the instrument cluster will flash with the switch
lever in either up or down position.
If a turn signal bulb becomes defective, the indicator light flashes
at about twice the normal frequency. ! Central warning light
The
central warning light in the instrument cluster will light up or flash when a
fault occurs in one of the vehicle’s systems. (Refer to “Central
warning system”). Coolant temperature gauge and warning light
Needle
in lower field – engine is cold As long as needle is in lower field, avoid high speeds and high engine rpm, until engine has reached normal operating temperature. Do not lug the engine. Needle
in center field – normal Under
normal driving conditions, needle should remain in center field. The needle may reach the upper field,
especially at high engine loads, but should return to “normal” when engine
load is reduced. Needle
in upper field – warning If
needle enters the upper field, the engine is overheating. The central warning light will also
come on. Reduce speed and engine
rpm. If the needle does not
return to the center field, and the central warning light remains on, pull
off the road, turn off the engine and let it cool down. Coolant temperature
warning light If
the warning light comes on, check that the fans are working. If the fans are not rotating, the
power supply to the fan control is defective. The cooling air flaps must be open. If necessary, open the flaps by hand
as described in the section “Cooling System”. Allow
the engine to cool down and drive to the nearest authorized workshop, keeping
a constant check on the temperature gauge. Avoid idling, crawling and engine speeds over 4000 rpm. WARNING
If the electric fans are not working,
there may be a malfunction in the temperature sensor switch or in the
electrical system. Check for a
blown fuse. If
the problem cannot be readily located, be sure the engine has cooled down
sufficiently. Then drive to the
nearest Porsche dealer, but carefully watch the coolant temperature gauge and
the warning light. Try to avoid
engine idling, very low speeds and engine speeds in excess of 4000 rpm. For
other details refer to “Cooling System”. Fuel level gauge and warning light
With
the ignition on, the amount of fuel in the tank is indicated by the fuel
gauge needle. Fuel level warning light This
light comes on when the fuel reserve level in the tank is down to about 2
U.S. gals, or 8 liters. Time to
refuel. The
central warning light and the warning lights in the combination instrument
light up for a bulb check when the ignition is turned on. They should go out as soon as the
engine is started. Also see “Central warning light system”. Warning
lights
(see
“Central warning light system”) BELT TEN. The
warning light indicates insufficient tension of the toothed belt. Have the toothed belt checked and
re-tensioned at the nearest workshop. TAIL LAMP The
warning light comes on when a bulb is defective. STOP LAMP The
warning light comes on and goes out after depressing the brake pedal. If the light stays on a bulb
is defective. Trailer turn signal indicator light Not
connected WASH FLUID The
warning light comes on when level in the windshield/headlight washer reservoir
is down to 2 U.S. qts. or 2 liters. PARKING LIGHTS The
indicator comes on when the parking lights are turned on. The light will go out as soon as the
headlights are switched on. COOLANT The
warning light comes on when the fluid level in the expansion tank falls below
the required minimum.
Occasionally, the light may come on when starting the engine. As soon as the engine warms up, the
coolant in the reservoir will expand, rise above the minimum level, and the
light will go out. If the
COOLANT warning light remains on, top up immediately and have the cooling
system inspected for leaks. For
other details refer to “Cooling System”. Oil
pressure warning light Engine
oil pressure is shown in bar. At
5000 rpm, with the engine at normal operating temperature, the oil pressure
should be about 5 bar. A slight
drop in oil pressure at higher temperatures is normal. If
the oil pressure should drop suddenly while you are driving, this light and
the central warning light will flash.
Pull off the road and stop the engine immediately. Check the engine oil level. If oil level is correct and the oil
pressure warning light is still on, do not drive the vehicle as severe engine
damage may result. Contact your
nearest Porsche dealer for assistance. Alternator
warning light The voltmeter shows the overall condition of the charging system. The needle should normally stay in the 12-14 volt range when the engine is running. A temporary drop below 12 volts when starting the engine is normal. The
alternator warning light comes on when the ignition is turned on and goes out
as the engine rpm increases. If
the light does not light up when turning the ignition on, or if it does not
go out after starting the engine, there is a malfunction in the electrical
system. If this is the case,
contact your Porsche dealer. If
the light flickers or stays on while you are driving, the V-belt may be loose
or broken. The fault may also be
in the regulator or the alternator itself. In this case, keep electrical consumption at a minimum and
drive to the nearest workshop. The
central warning light and the warning lights in the combination instrument
light up for a bulb check when the ignition is turned on. They should go out as soon as the
engine is started. Also see “Central warning light system”. (see
“Central warning light system”) ANTILOCK The
warning light goes on in the event of a malfunction in the ABS system. The system is switched off; the
normal brake system remains fully operational. If the light comes on, take your vehicle to your
authorized dealer for service immediately. BRAKE FLUID The
warning light flashes when the brake fluid level falls below the
required minimum. BRAKE PAD The
warning light comes on when a brake pad is worn excessively. PARK BRAKE The
warning light comes on and stays on until parking brake is fully released. ENGINE OIL The
warning light flashes if, with the ignition on, the engine stationary,
and the vehicle on level ground, the amount of oil in the sumps is less than
1.59 U.S. gal. or 6 liters. Do not attempt to start the engine! Add oil at once. |
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