Driving and Driving Safety
149
C – Driving into and out of corners
When driving into and out of corners, vehicles will
not be detected or will be detected too late, or
adaptive cruise control will react to vehicles in
adjacent lanes.
D – Stationary vehicles
A stationary vehicle that appears suddenly in the
detection field of the radar sensor, e.g. after a
vehicle in front changes lanes, will not be detected
by adaptive cruise control.
Stationary vehicles are not detected by the radar
sensor of the adaptive cruise control.
f
Drive with extreme care.
f
Slow down if necessary.
E – Vehicles with large overhangs
The tail of the vehicle will not be detected
correctly on vehicles with large overhangs,
e.g. timber lorries.
If there is a vehicle in front with a long overhang,
the radar sensor of the adaptive cruise control is
not able to detect the end of the vehicle or detects
it incorrectly.
f
Drive with extreme care.
f
Slow down if necessary.
Active Safety – Porsche “Active Safe”
The adaptive cruise control sensor is used for the
Porsche “Active Safe” functions.
These include:
–
Brake system prefilling
Prefilling of the brake system if the radar
sensor detects that the vehicle is coming
critically close to a moving obstacle in order to
bridge the air gaps and improve braking
response.
–
Brake Assist
Reduction of the activation threshold of the
Brake Assist function if the sensor detects that
the vehicle is coming critically close to a
moving obstacle.
The activation threshold of the Brake Assist
function is reduced in three stages, depending
on how critical the danger situation is.
–
Target braking
If the radar sensor detects that the vehicle is
coming critically close to a moving obstacle
and, at the same time, braking power is
inadequate, brake pressure can be increased
in accordance with the situation, through to full
braking if required.
Information
All Porsche “Active Safe” functions are active for
speeds of more than 20 mph (30 km/h).
Stationary vehicle not
detected.
WARNING
h
End of vehicle in front
not detected correctly.
WARNING
h
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