Porsche Cayman Owner's Manual page 160

D – Automatic selection mode
Select position D for "normal" driving. The gears
are shifted automatically according to the
accelerator position and speed.
Depending on the way the vehicle is driven
(economical, comfortable or sporty driving style)
and on the resistance (e.g. uphill), the gear-
changing points are shifted towards higher or
lower engine-speed ranges.
The accelerator position, driving speed, engine
speed, longitudinal and lateral acceleration and
the road profile all have an influence on the gear-
changing characteristic.
Unwanted upshifts, e.g. when entering bends, are
prevented by swiftly releasing the accelerator
pedal.
Depending on lateral acceleration, upshifts on
bends are not made until the engine-speed limit is
reached.
When you brake, and depending on the amount of
deceleration, the PDK transmission changes down
earlier.
For subsequent cornering, the correct gear is
engaged when pressure is applied to the brakes
before the bend. The bend is taken in the right
gear, and when you accelerate out of the bend you
do not have to change down.
With a sporty driving style, downshifts are already
initiated when the brake pedal is touched lightly.
This further enhances a dynamic driving style.
The PDK transmission temporarily changes to the
sportiest gear-changing map, i.e. to the highest
possible gear-changing points, if the accelerator
pedal is pressed quickly. The transmission
accordingly shifts down immediately by one or two
gears (temporary downshift).
The transmission no longer selects 7th gear at
very high driving speeds.
158
Driving and Driving Safety
However, if necessary, the gear can be selected
manually.
Upshifts and downshifts are avoided as far as
possible when PSM is active. In the case of high
wheel slip when PSM is switched off, upshifts are
prevented until slip is no longer detected.
Driving in coasting mode
Through attentive driving, fuel can be saved in
coasting mode. The vehicle rolls with the engine
disengaged and at idle speed without engine
braking effect.
Preconditions for automatic coasting mode
– Driving in selector lever position D
– Coasting mode is switched on.
Indicator light on the button
– Sport and Sport Plus modes are switched off
– PSM is active
– Cruise control is not active
– Engine, transmission and battery are at
operating temperature
– Calm/economic driving style
– Slight uphill or slight downhill gradients
f
Slowly take your foot off the accelerator.
The engine is disengaged and runs at idle speed.
The vehicle rolls with no engine braking effect.
Coasting mode is recognizable by the idle speed
indicated on the tachometer.
Information
In the case of a sporty driving or when swiftly
releasing the accelerator pedal, coasting mode is
suppressed to allow targeted use of the engine
braking effect. On more pronounced uphill
gradients, "coasting" is also prevented as the
coasting phases are very short due to the gradient
and no significant fuel savings can be achieved.
On more pronounced downhill gradients,coasting
is suppressed because here, the vehicle does not
slow down, despite the engine overrun torque and
no fuel is consumed in this driving situation due to
utilisation of the overrun shut-off.
Ending coasting mode/utilising engine
braking effect
f
Press the accelerator or brake pedal
or
Operate a shift paddle or a shift button or
Shift gear using the selector lever.
Initiating coasting mode manually
– Driving in selector lever position D or driving in
selector lever position M
When coasting mode is suppressed, e.g. in the
is off.
case of sporty driving, sudden release of the
accelerator pedal or excessively low engine
temperature, coasting mode can be initiated
manually.
f
Take your foot off the accelerator pedal and
shift past the highest possible gear with the
shift paddle, one of the shift buttons, or with
the selector lever.
Switching coasting mode on and off using
the Auto Start Stop button
Switching off
f
Press button
The indicator light on the button lights up.
Coasting mode is switched off and automatic
stopping of the engine is suppressed.
Switching on
f
Press button
The indicator light on the button goes out.
Coasting mode is switched on and the engine
is automatically stopped when the vehicle
stops.
.
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