Porsche 911 2020, Owner'S Manual

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Lane Change Assist (LCA)
149
General information
– The system provides support when driving at
speeds above approx. 10 mph (15 km/h).
– At speeds below 10 mph (15 km/h), the driver is
supported by Rear Turn Assist, but only when
driving off and on the vehicle side on which the
turn signal was actuated.
– Rear Turn Assist is active at speeds up to approx.
12 mph (20 km/h).
– Lane Change Assist and Rear Turn Assist are not
available if the system detects that the radar
sensors are covered.
– The radar sensors can sometimes detect other
objects (e.g. high or raised crash barriers), not
only vehicles.
– The display is designed so that you notice it
merely by glancing at the door mirror.
Information
If the position of the radar sensors was changed fol-
lowing an accident, for example, this can impair the
function of Lane Change Assist.
e Visit an authorized Porsche dealer. Porsche rec-
ommends an authorized Porsche dealer, as they
have trained technicians and the necessary parts
and tools.
Information
To ensure that Lane Change Assist operates
correctly:
e Do not cover the radar sensors on the rear
bumper (e.g. with stickers). Keep the area clean
and free of snow and ice.
e
Do not cover the warning indicator on the door
mirror (e.g. with stickers or stick-on blind spot
mirrors).
e Subsequent painting of the bumper may lead to a
reduction in the sensor range owing to the
thicker coating layer. The electrical properties
may also differ from those of the approved
paints.
Fig. 97: Radar sensors in rear bumper
Operating principle
Using the radar sensors integrated in the rear
bumper, Lane Change Assist measures the distance
and speed difference of the detected vehicles in
relation to your vehicle. The radar sensors cover an
area of up to 230 ft. (70 m) to the rear (approach
zone) and the blind spot.
Whenever Lane Change Assist assesses the speed
difference and distance as being critical for chang-
ing lanes, this is indicated on the respective door
mirror. The two sides of the vehicle are shown sep-
arately here. Therefore, for example, the indicator on
the left door mirror assists the driver in changing to
the left lane.
If a vehicle regarded as critical has switched on its
turn signal, the respective warning indicator on the
door mirror will flash brightly and briefly several
times.
If you overtake another vehicle slowly (with a speed
difference of less than approx. 10 mph (15 km/h),
the warning indicator lights up as soon as that ve-
hicle is in your blind spot and is detected by Lane
Change Assist. If the speed difference is greater, no
warning indicator will be activated on the door
mirror.
The speed range of the Lane Change Assist is not
reached immediately after driving off. Until it is
reached, the driver is supported by the Rear Turn
Assist.
When the turn signal is on, the Rear Turn Assist de-
tects objects located next to and behind your ve-
hicle, but only at the side on which the turn signal
has been activated. If a potential hazard is detected,
the respective warning indicator on the door mirror
lights up. If your own calculated driving path crosses
that of a detected vehicle on the side of the vehicle
on which the turn signal has been activated, the re-
spective warning indicator on the door mirror will
flash brightly and briefly several times.