Porsche 928 GT1991, Owner'S Manual

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1 Set/accelerate 2 Reset 3 Cancel
Automatic speed control
The automatic speed control allows you to
maintain a constant cruising speed of 30
mph (50 km/h) or higher, without actuating
the accelerator pedal. Any manual opera-
tion, such as accelerating, gearshifting or
braking can be done independent of the au-
tomatic speed control. The spring loaded
control lever operating the automatic speed
control is located just below the wiper/
washer lever.
While driving with the automatic speed
control set (at speeds above 30 mph or 50
km/h), do not bring shift lever into the
Neutral position as excessive engine rpm
will result.
To operate the automatic speed control
Accelerate to the desired cruising speed,
push lever toward instrument cluster (arrow
1) and release. This sets the cruising speed
and stores it in a memory.
After a second or two, automatic speed con-
trol will take over, and you can remove your
foot from the accelerator pedal. The set
cruising speed will be maintained automati-
cally.
WARNING
Do not use the cruise control when it may
be unsafe to keep the car at a constant
speed. For example, a constant speed may
not be safe in heavy traffic, or on winding
or slippery roads. With the cruise control
system engaged, the engine speed will not
return to idle when removing the foot from
the accelerator pedal.
Please observe all local and national speed
limits.
Passing: When you want to drive faster for
a brief moment, for example when passing
another vehicle, actuate the accelerator.
When you take your foot off the accelerator
pedal, the preset speed will automatically be
resumed.
Gearshifting: When shifting gears, the au-
tomatic speed control is only disengaged as
long as the clutch pedal is depressed. The
preset speed will be resumed as soon as you
take your foot off the clutch pedal.
Braking and stopping: Whenever you apply
the brake or come to a stop, the automatic
speed control is disengaged. Move the lever
down (arrow 2), and the preset speed will be
resumed.
Switching system off: To switch the au-
tomatic speed control off, move the lever to-
ward you (arrow 3). To resume the preset
speed, move the lever down (arrow 2).
To change the preset cruising speed
Increase preset speed:
Accelerate by depressing the accelerator
pedal. When the desired speed is reached
push lever toward instrument cluster (arrow
1) and take your foot off the accelerator
pedal. Now the new cruising speed is set
and stored in the memory.
As an alternative, you can hold the lever in
the front position (arrow 1), without depres-
sing the accelerator pedal. The car will accel-
erate on its own. When the desired speed is
reached, release the lever.
Decrease preset speed:
Apply the brake, which will disengage the au-
tomatic speed control. When the vehicle has
slowed down to the desired speed, push
lever toward instrument cluster (arrow 1) to
set the new cruising speed.
As an alternative, disengage the automatic
speed control by moving the lever toward
you (arrow 3). When the vehicle has slowed
down to the desired speed, push lever to-
ward instrument cluster (arrow 1) to register
the new cruising speed in the memory.
Note: When driving up a hill, if the engine
power is insufficient in a particular gear, the
speed control will be disengaged automati-
cally. Shift to a lower gear to avoid lugging
the engine.
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