Porsche Boxster 2006 Owner's Manual page 166

Shifting gear on the steering wheel
With the toggle switches on the steering wheel,
you can change temporarily from automatic
selection mode D to manual mode M.
Advantages:
– Shifting down before bends and on entering bu-
ilt-up areas.
– Shifting down on downward slopes (engine bra-
king).
– Shifting down for brief spurts of acceleration.
– Selecting 1st gear for moving off.
The manual selection mode remains engaged:
– for cornering (depending on the lateral
acceleration) and overrunning,
– when the vehicle is stationary
(e.g. at a junction).
The system leaves manual selection mode:
– automatically after approx. 8 seconds
(unless cornering or overrunning),
– if you depress the accelerator to kickdown,
– after moving off.
166
Shifting Gear
Temporary change-down
Conditions:
Speed is higher than approx. 33 mph (54 km/h).
f Depress accelerator quickly.
The Tiptronic changes temporarily to the spor-
tiest gear-changing map, i.e. to the highest
possible gear-changing points. Correspondin-
gly, the transmission shifts down immediately
by one or two gears.
Ending the function:
f Release the accelerator markedly.
Kickdown
The kickdown function is active in selector lever
position D, even if you temporarily change to ma-
nual mode M using the toggle switches on the
steering wheel.
f For optimum acceleration, e.g. when overta-
king, depress the accelerator pedal beyond
the full-throttle point (kickdown).
The transmission shifts down depending on the
speed of travel and engine speed.
Upward shifts occur at the highest possible engine
speeds.
These gear-changing speeds remain active until
the accelerator is released to approx. 80% of the
wide open throttle position.