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General information
– The system helps when driving at speeds
above approx. 10 mph (15 km/h).
– At speeds below 9 mph (15 km/h), the driver is
supported by the rear turn assist, however, on-
ly when driving off and on the vehicle side
where the turn signal was actuated.
– 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
e
If the positions of the radar sensors were
changed following a rear-impact collision, for
example, always visit an authorized Porsche
dealer for safety reasons. Porsche recom-
mends 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 sensor area on the rear
bumper (Fig. 84) with objects (e.g. 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).
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. 84: Radar sensors in rear bumper
Operating principle
Using the radar sensors integrated in the rear
bumper, Lane Change Assist measures the dis-
tance and speed difference of the detected ve-
hicles 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 area.
Whenever Lane Change Assist regards the speed
difference and distance as critical for changing
lanes, this is indicated on the relevant door mirror.
The two sides of the vehicle are shown separately
here. The warning indicator on the left door mirror
assists the driver when changing to the left lane,
for example.
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.
When slowly overtaking another vehicle (speed dif-
ference of less than approx. 9 mph (15 km/h)), the
warning indicator lights up as soon as this vehicle
is in your blind-spot area and is detected by Lane
Change Assist. If the speed difference is greater,
no indication is made 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 signal light is on, the Rear Turn Assist
detects objects located next to and behind your
vehicle, but only at the side on which the signal
light has been activated. If a potential hazard is
detected, a warning is output via the signal light in
the relevant door mirror in the same way as with
Lane Change Assist.
Information
The radar sensors cover the adjacent lane to the
left and right. Other lanes are
not
covered by the
radar sensors.
Information and warning stage
Lane Change Assist has two indicator levels that
are activated as appropriate, depending on
whether or not the turn signal has been set.
Information stage
If the turn signal is not set, Lane Change Assist in-
forms you about detected vehicles that are
