Porsche 911 2020 Owner's Manual page 153

Vehicles approaching slowly
Fig. 99: Vehicle approaching slowly
A – Warning indicator on door mirror does not light
up
The sensors detect a vehicle approaching at a slow
speed. In the example, the approaching vehicle is in
the left lane. Due to the small speed difference and
the large distance, there is no indication on the door
mirror.
B – Warning indicator lights up in information stage
The distance from the slow approaching vehicle is
now smaller. The warning indicator on the door mir-
ror lights up. Only when Lane Change Assist regards
the speed difference and distance as critical for
changing lanes will this be indicated on the door
mirror. You are alerted to every vehicle detected by
Lane Change Assist when they are in the blind spot.
C – Warning indicator flashes in warning stage
If the turn signal is switched on in driving situation B,
the warning indicator on the door mirror flashes
briefly several times. Lane Change Assist is inform-
ing you that you may have overlooked a vehicle.
Vehicles falling back slowly
Fig. 100: Vehicle falling back slowly
A – Warning indicator on door mirror does not light
up
Lane Change Assist has not yet detected the vehicle
you have overtaken. There is no indication on the
door mirror.
B – Warning indicator lights up in information stage
Lane Change Assist detects the vehicle that is falling
back slowly on the right (less than approx.
10 mph (15 km/h) speed difference). In the exam-
ple, this vehicle is in the right lane. The warning in-
dicator on the door mirror lights up.
C – Warning indicator flashes in warning stage
If the turn signal is switched on in driving situation B,
the warning indicator on the door mirror flashes
briefly several times. Lane Change Assist is inform-
ing you that you may have overlooked a vehicle.
Lane Change Assist (LCA)
Vehicles falling back quickly
Fig. 101: Vehicle falling back fast
A – Warning indicator on door mirror does not light
up
Lane Change Assist has not yet detected the vehicle
you have overtaken. There is no indication on the
door mirror.
B – Warning indicator on door mirror does not light
up
Lane Change Assist detects the vehicle falling back
fast on the right (more than approx.
10 mph (15 km/h) speed difference), but it does not
consider it as critical for changing lanes owing to the
speed with which it is falling behind. In the example,
this vehicle is in the right lane. There is no indication
on the door mirror.
C – Warning indicator on door mirror does not light
up
If the turn signal is switched on in driving situation B,
the warning indicator is still not activated on the
door mirror.
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B
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