Porsche Cayenne Turbo Driver Manual page 174

Kickdown
The kickdown function is active in selector lever
position D.
f For optimum acceleration, e.g. when
overtaking, 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
full-throttle position.
D – Automatic selection mode
(in the off-road driving programme with
reduction)
The functions of selector lever positions D and M
differ in the High Range on-road driving
programme and the Low Range off-road driving
programme.
f Use selector lever position D for "normal"
driving.
The gears are shifted automatically according
to the accelerator position and speed.
The gear-changing points are chosen to achieve
the best possible vehicle control on difficult
terrain.
174
Driving and Driving Safety
Depending on the route profile, the gear-changing
points are shifted towards higher or lower engine-
speed ranges. On steep downhill stretches,
upward shifts are prevented until medium engine
speeds are reached (at least 2500 rpm).
When the vehicle is overrunning, an automatic
upshift does not occur when the engine speed
limit is reached.
Moving off
The vehicle moves off in 1st gear.
Shifting gears on the steering wheel
With the rocker switches on the steering wheel,
you can change temporarily from automatic selec-
tion mode D to manual mode M.
Advantages
– Shifting down on downward slopes (engine
braking).
– Shifting down for brief spurts of acceleration.
– Selecting 1st, 2nd or 3rd gear for moving off.
The manual selection mode remains engaged:
– for overrunning,
– depending on lateral acceleration,
– when the vehicle is stationary
(e.g. at a junction).
The system leaves manual selection mode again:
– automatically after around 8 seconds
(unless vehicle is subject to high lateral accel-
eration, overrunning or is stationary),
– if you depress the accelerator to kickdown.
Kickdown
The kickdown function is active in selector lever
position D.
f For optimum acceleration, e.g. when
overtaking, 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
full-throttle position.
Tip on driving
Unlike in the on-road driving programme, an
automatic upshift is not performed in manual
selection mode M when the engine-speed limit is
reached.