Porsche Turbo 2007 Driver Manual page 177

Hillholder –
moving-off assistant on vehicles with
Tiptronic S
In Tiptronic selector lever positions D and M, the
hillholder function makes it easier to move off
from a stand-still on an upward slope when the
engine is running. The driver does not have to
apply the brake.
The hillholder function is not active:
– In Tiptronic selector lever positions N and R,
– In the reduced driving programme and
– If not all of the wheels are touching the ground
(on difficult terrain, for example).
d
Safety notes!
In spite of the advantages of the hillholder
function, it is still the driver's responsibility to
adapt his driving style and manoeuvres in line with
the prevailing conditions.
The increased safety that is provided should not
induce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with the hillholder function.
Driving in limit situations should be avoided,
e.g. on icy slopes or on slippery surfaces.
Assistance by the hillholder is not guaranteed in
these and similar cases.
176
Driving and Driving Safety
Porsche Drive-Off Assistant –
moving-off assistant on vehicles with
manual transmission
The Porsche Drive-Off Assistant is an assistance
function which helps the driver move off on
upward slopes. The vehicle must have sufficient
road contact.
The Porsche Drive-Off Assistant is available for
slopes starting at approximately 5 %.
d
Danger!
Risk of accident.
Assistance by the Porsche Drive-
Off Assistant is not guaranteed when moving
off on a slippery surface (e.g. on icy or loose
surfaces). In this case, the vehicle could slip.
The limits set by the physics of driving cannot
be overcome, even with the Porsche Drive-
Off Assistant. The responsibility for moving
off on upward slopes is still the driver's,
despite the Porsche Drive-Off Assistant.
f Always adjust your driving style to the driving
conditions and vehicle load, use the footbrake
if necessary.
Moving off with Porsche Drive-Off Assistant
1. Hold the vehicle securely on the slope with the
footbrake or parking brake.
The engine must be running.
2. Fully depress the clutch pedal.
3. Engage a gear corresponding to the direction
of travel up the slope (1st gear or reverse
gear).
4. While keeping the clutch pedal depressed,
release the footbrake or foot-operated parking
brake.
The vehicle is held on the slope.
5. Move off as usual.
Note on operation
The Porsche Drive-Off Assistant ceases to
function:
– In the event of shift to neutral.
– When changing gears.
– If the engine is not running.
d
Danger!
Risk of accident.
If the Porsche Drive-Off Assistant ceases to
function, the vehicle will no longer be held on
a slope.
f Hold the vehicle with the footbrake.