BMW X2 2021, Owner'S Manual

Page: 162 / 304

Functional limitations
The system may be limited in the following situa‐
tions:
▷ In heavy fog, wet conditions, or snowfall.
▷ In the event of missing, worn, poorly visible,
merging, diverging, or multiple lane markings
such as in construction areas.
▷ When lane markings are covered in snow, ice,
dirt or water.
▷ In tight curves or on narrow lanes.
▷ When lane markings are covered by objects.
▷ When driving very close to the vehicle in front
of you.
▷ When driving toward bright lights.
▷ When the windshield in front of the interior
mirror is fogged over, dirty or covered with
stickers, etc.
▷ During calibration of the camera immediately
after vehicle delivery.
Fatigue alert
Concept
The system can detect decreasing alertness or
fatigue of the driver during long, monotonous
trips, for instance on highways. In this situation, it
is recommended that the driver takes a break.
Safety information
Warning
The system cannot serve as a substitute for the
driver’s personal judgment in assessing one's
physical state. An increasing lack of alertness or
fatigue may not be detected or not be detected
in time. There is a risk of accident. Make sure
that the driver is rested and alert. Adjust driving
style to traffic conditions.
Function
The system is switched on each time the engine
is started and cannot be switched off.
After travel has begun, the system monitors cer‐
tain aspects of the driver's behavior, so that de‐
creasing alertness or fatigue can be detected.
This procedure takes the following criteria into
account:
▷ Personal driving style, for instance steering
behavior.
▷ Driving conditions, for instance time, length of
trip.
Starting at approximately 43 mph/70 km/h, the
system is active and can display a recommenda‐
tion to take a break.
Break recommendation
If the driver becomes less alert or fatigued, a
message is displayed in the Control Display with
the recommendation to take a break.
A recommendation to take a break is displayed
only once during an uninterrupted trip.
After a break, another recommendation to take a
break cannot be displayed until after approxi‐
mately 45 minutes.
System limits
The function may be limited in the following sit‐
uations and may issue an incorrect warning or no
warning at all:
▷ When the time is set incorrectly.
▷ When the vehicle speed is mainly below
about 43 mph/70 km/h.
▷ With a sporty driving style, such as during
rapid acceleration or when cornering fast.
▷ In active driving situations, such as when
changing lanes frequently.
▷ When the road surface is poor.
▷ In the event of strong side winds.
Seite 162
CONTROLS
Safety
162
Online Edition for Part no. 01405A2CF16 - II/21