Porsche cayman gt4 Owner's Manual page 127

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Misuse of cruise control
WARNING
If the current traffic situation does not allow you to
drive safely at a constant speed and with sufficient
distance to the vehicle in front, using the cruise
control can cause accidents.
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Do not use the cruise control in heavy traffic,
in city traffic, on twisting roads or under
unfavorable road conditions (e.g. wintry or wet
conditions, varying road surfaces).
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Observe all local and national speed limits.
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Do not reach through the steering-wheel
spokes while driving.
Switching cruise control readiness on
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Press button A on the control stalk.
Cruise control readiness
The grey symbol on the multi-function
display in the instrument panel indicates
readiness.
Maintaining and storing speed
1. Accelerate or decelerate to the desired speed
using the accelerator pedal.
2. Push the control stalk on the steering wheel
forward (position 1).
The current driving speed is now stored as the
desired speed, which will be maintained
automatically.
Desired speed
The desired speed that was stored is
displayed under the cruise control
symbol, which has now turned orange.
Accelerating (e.g. to overtake)
Variant 1
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Increase the speed as usual with the
accelerator pedal.
When you ease off the accelerator, the
previously stored value is set again.
Variant 2
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Push the control stalk on the steering wheel
forward (position 1).
The desired speed is increased in steps of
1 mph (1 km/h).
or
Press the control stalk on the steering wheel
forward and keep it pressed (position 1).
The desired speed is increased in steps of
5 mph (10 km/h).
The new desired speed is displayed on the multi-
function display in the instrument panel.
Decelerating
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Briefly pull the control stalk on the steering
wheel towards the steering wheel (position 2).
The desired speed is decreased in steps of
1 mph (1 km/h).
or
Pull the control stalk on the steering wheel
towards the steering wheel and keep it pulled
(position 2).
The desired speed is decreased in steps of
5 mph (10 km/h).
The new desired speed is displayed on the multi-
function display in the instrument panel.
Interrupting cruise control
operation – OFF
The speed driven before the interruption remains
stored in the memory and can be reactivated by
pressing the control stalk.
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Please see the chapter "RESUMING THE
STORED SPEED – RESUME" on page 126.
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Press the control stalk down (position 3).
Cruise control operation is interrupted
automatically:
– If the set vehicle speed is exceeded by more
than approx. 16 mph (25 km/h) for longer
than 20 seconds.
– If the actual vehicle speed falls below the set
vehicle speed by approx. 37 mph (60 km/h)
for longer than 60 seconds (e.g. gradients).
– If Porsche Stability Management (PSM)
intervenes for longer than 0.5 seconds.
Driving and Driving Safety
125