Porsche 928 S 1986 Driver Manual page 34

Wipe-wash lever
The wipe-wash lever has 6 switch positions:
0 - Wipers off
1 - Slow wipe
2-Fast wipe
3-Very fast wipe
4-Delay wipe. The wipers operate automa-
tically at regular intervals. The delay inter-
val can be adjusted by turning the knurled
knob (A) under the right-hand side of the
instrument panel.
5 - Wipers and windscreen washers. By pulling
the lever towards the steering wheel, the
electric washers as well as the wipers are
switched on. With the ignition on the wind-
screen washer jets are heated, depending
on the outside temperature.
6-Headlight washers. By pushing the lever
towards the instrument panel, the head-
light washer system is activated, but only
when the headlights are on. A separate
pump supplies high-pressure water to the
nozzles which are found in the bumper
moulding in front of the headlights. The
powerful water jet softens the dirt and
washes it away.
If necessary, repeat the procedure.
The windscreen should be sufficiently wet
before the wipers are actuated to avoid
scratching it. The wiper blades should be
checked regularly, and replaced at least
once a year.
Concentrated washer system
With the concentrated washer system, even
dirt embedded in silicon-based polishes can
be removed from the screen. A short press on
the switch (B) under the right-hand side of the
instrument panel causes the concentrated
Porsche cleaning solution to be pumped onto
the screen.
The duration of the spray is controlled by a
time relay to avoid too heavy consumption of
the solution. If necessary the operation can
be repeated. The windscreen washers and
wipers can then be operated to finish off the
cleaning process.
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