Porsche Cayenne 2020, Руководство пользователя

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Active Lane Keeping
37
Information
The driver's steering behavior is monitored when
Active Line Keeping is switched on and active. If
there is no steering activity (e.g. hands not resting or
resting only lightly on the steering wheel), a warning
appears on the instrument cluster after a short time.
The system prompts the driver to actively take over
the steering. If the driver does not react to the take-
over prompt, the system switches to a passive state.
On vehicles with active emergency stop function,
the vehicle may be decelerated to a standstill.
> Please see chapter "Emergency Stop Function"
on page 113.
> Please see chapter "Adaptive Cruise Control
(ACC)" on page 41.
> Please see chapter "Lane Keep Assist" on
page 156.
> Please see chapter "Lane Change Assist (LCA)"
on page 151.
System limitations
WARNING
Driving situations with
risk of accidents
There are some driving situations in which the sys-
tem cannot guarantee Active Lane Keeping. There is
therefore a risk of accidents when using the system!
These include the following driving situations:
– When increased attention is required on the part
of the driver
– During sporty driving
– In adverse weather conditions (e.g. fog, snow or
heavy rain)
– In unfavorable road conditions (including poor
surfaces or unclear lane markings)
– In areas with road construction
– When approaching humps and dips
– In urban traffic
– On winding and narrow country roads
– In unclear traffic situations such as intersections
or tollbooths
– Off-road or on unpaved or slippery roads
The system does not always keep the vehicle in the
center of the lane or in a central position behind the
vehicle ahead.
Active Lane Keeping does not react to people and
animals or vehicles crossing lanes or oncoming ve-
hicles in the same lane. These are not detected as
obstructions by the sensors.
e Never use Active Lane Keeping in the specified
situations.
e Do not use Active Lane Keeping to steer the ve-
hicle around obstructions lying on the road.
Information
If there is a fault in the system or if Active Line
Keeping does not function as described in this sec-
tion, do not use the assistance function. Visit an au-
thorized Porsche dealer. Porsche recommends an
authorized Porsche dealer, as they have trained
technicians and the necessary parts and tools.
Responding to warning symbols
Always heed any warning and information messages
displayed in the vehicle.
> Please see chapter "Warning and Information
Messages" on page 293.
Operating principle
The key components for monitoring the Active Lane
Keeping environment include a front camera, front
and rear radar as well as ultrasound sensors. Re-
corded sensor data is collated and evaluated.
Active Lane Keeping helps the driver keep the ve-
hicle centrally in the lane by making continuous
steering interventions.
When the system is active, the driver can set a pre-
ferred position within the lane. When the driver
keeps the vehicle at the desired position for several
seconds, the system ends lane center guidance and
starts driving at an offset position in the lane. The
shift in position is reset again when the system be-
comes passive or is deactivated (e.g. by indicating,
changing lane or braking).
Active Lane Keeping is linked to the Adaptive Cruise
Control (ACC) and operates within a speed range of
approx. 0 mph – 130 mph (0 – 210 km/h). The
system is designed for driving on highways and well-
surfaced country roads.
Active Lane Keeping can make it easier to drive in
traffic jam situations. The system always prioritizes
the lane markings over other objects (e.g. vehicles).
In some cases, this can mean that the driver has to
position the vehicle in the center of the lane in order
to activate the system. Activation of the system
outside the center of the lane is prevented so that
the driver does not feel a strong steering torque on
the steering wheel immediately after the system is
activated.
The driver is always responsible for moving to the
side of the road to create a lane for emergency ve-
hicles. In this situation, the driver can switch off the
system or simply override the system using the
steering wheel.
Behavior when the turn signal is activated
The system also takes the turn signal into account. If
the driver activates the turn signal, steering inter-
ventions are suppressed on the selected side. The
status icon remains green (active).