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EnglishSafety -> Active Blind Spot Detection for your BMW i4 2021-2025
Safety
CONTROLS
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With manual steering intervention.
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When driving very close to the vehicle in
front of you.
When another driver assistance system is
activated, if applicable.
Up to 10 seconds after turning on drive-
ready state using the Start/Stop button.
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No lane boundaries detected.
While Dynamic Stability Control is disabled.
When the system limits are reached.
A Check Control message may be displayed
when the system is limited. A yellow warning
light also illuminates, depending on national-
market version.
Warning signal
A warning tone sounds if the driver does
not actively steer after the Lane Departure
Warning system has performed multiple active
steering interventions within three minutes.
Active Blind Spot Detection
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A short warning tone will sound after the
second steering intervention.
Principle
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A longer warning tone will sound following
the third steering intervention.
Active Blind Spot Detection detects vehicles
in the blind spot or vehicles approaching from
behind in the adjacent lane.
In addition, a Check Control message is dis-
played.
The warning light in the exterior mirror gives
warnings at different levels.
The warning tone and Check Control message
advise the driver to pay closer attention to their
lane.
General information
The longer warning tone is stopped if the
driver takes control of the steering.
System limits
General information
Follow the system limits in the "Collision warn-
ing systems" chapter.
Functional limitations
The system may be limited in the following
situations:
Radar sensors monitor the area behind and
next to the vehicle when traveling faster than a
minimum speed.
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In the event of missing, worn, poorly visible,
merging, diverging, or multiple lane boun-
daries such as in construction areas.
The minimum speed is country-specific and
displayed in the Active Blind Spot Detection
menu.
With lane boundaries that are covered in
snow, ice, dirt or water.
The system indicates whether there are vehi-
cles in your blind spot, arrow 1, or approaching
from behind in an adjacent lane, arrow 2. The
warning light in the exterior mirror illuminates
dimly.
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In tight corners or on narrow roads.
With lane boundaries that are covered by
objects.
Before you change lanes after setting the turn
signal, the system issues a warning in the
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Safety
CONTROLS
situations described above. The warning light
in the exterior mirror flashes and the steering
wheel vibrates.
5. "Safety and warnings"
6. "Active Blind Spot Detection"
7. Select the desired setting.
When turning at a speed of up to approx.
12 mph/20 km/h, the steering wheel will not
vibrate.
Setting the intensity of the steering
wheel vibration
1.
Apps menu
Safety information
Follow the safety information in the "Forward
Collision Mitigation" chapter.
2. "Vehicle"
3. "Driving settings"
4. "Driver Assistance"
5. "Feedback via steering wheel"
6. "Vibration intensity"
7. Select the desired setting.
Sensors
The system is controlled by the following sen-
sors:
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Camera behind the windshield.
Radar sensors, side, rear.
The setting is applied to all collision warning
systems.
Depending on the national-market
version: turning steering intervention
on/off
Functional requirement
The areas of the sensors must be clean and
clear.
1.
Apps menu
2. "Vehicle"
Turning Active Blind Spot Detection
on/off
3. "Driving settings"
1.
Apps menu
4. "Driver Assistance"
5. "Safety and warnings"
6. "Active Blind Spot Detection"
7. "Steering intervention"
2. "Vehicle"
3. "Driving settings"
4. "Driver Assistance"
5. "Safety and warnings"
6. "Active Blind Spot Detection"
7. Select the desired setting.
Display in the instrument cluster
Depending on vehicle equipment and national-
market version, information for the system is
displayed in the Assisted View of the instru-
ment cluster.
Adjusting the Active Blind Spot
Detection
Additional information:
Assisted View, refer to page 153.
Setting the warning time
1.
Apps menu
2. "Vehicle"
3. "Driving settings"
4. "Driver Assistance"
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Safety
CONTROLS
steering intervention. The steering intervention
helps return the vehicle into the lane. The
steering intervention can be noticed on the
steering wheel and can be manually overrid-
den at any time.
Warning function
Warning light in exterior mirror
The steering intervention is carried out from
a minimum speed. The minimum speed is dis-
played on the control display.
Warning light flashing
When the vehicle is unlocked, the warning light
in the exterior mirror flashes for self-testing
purposes.
The warning light in the exterior mirror warns
of a possible collision with a detected vehicle.
System limits
Prewarning
General information
The dimmed warning light in the exterior mirror
indicates when vehicles are in your blind spot
or approaching from the rear.
Follow the system limits in the "Collision warn-
ing systems" chapter.
Upper speed limit
If the vehicle speed exceeds approx.
155 mph/250 km/h, the system is deactivated
temporarily.
Acute warning
When an acute warning occurs, the steering
wheel vibrates briefly. The warning light in the
exterior mirror flashes brightly.
If the vehicle speed falls below approx.
155 mph/250 km/h, the system is reactivated.
An acute warning is issued if the following con-
ditions are met:
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Another vehicle is located in the critical
area.
Displaying warnings
The number of warnings shown depends on
how the settings are configured. However,
there may also be an excess of unwarranted
warnings of critical situations.
Your own vehicle is approaching the other
lane.
Depending on the system setting when the
turn signal is turned on.
Functional limitations
The system may be limited in the following
situations:
The warning stops when the other vehicle has
left the critical area or the turn signal has been
turned off.
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When a vehicle is approaching at a speed
much faster than your own.
Steering intervention
Depending on the national-market version:
when there is no response to the vibration
of the steering wheel at speeds of up to
130 mph/210 km/h and the lane marking
is crossed, the system engages the active
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In tight corners or on narrow roads.
The bumper is dirty, iced up or covered,
for instance by stickers.
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Safety
CONTROLS
Depending on the national-market version, the
steering intervention e.g. in the following situa-
tions:
The minimum speed is country-specific and
displayed on the control display.
If, for example, another vehicle is detected next
to your vehicle and there is a risk of collision
with this vehicle, the system helps avoid a col-
lision. For this purpose, the system issues a
warning with a flashing LED in the exterior mir-
ror, a Check Control message and a vibrating
steering wheel. If necessary, an active steering
intervention is performed by the system.
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In the event of missing, worn, poorly visible,
merging, diverging, or multiple lane boun-
daries such as in construction areas.
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With lane boundaries that are covered in
snow, ice, dirt or water.
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With lane boundaries that are not white.
With lane boundaries that are covered by
objects.
Safety information
Follow the safety information in the "Forward
Collision Mitigation" chapter.
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When driving very close to the vehicle in
front of you.
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If the camera is impaired.
Functional requirement
The camera behind the windshield determines
the lane boundary positions.
Up to 10 seconds after turning on drive-
ready state using the Start/Stop button.
A Check Control message may be displayed
when the system is limited. A yellow warning
light also illuminates, depending on national-
market version.
The camera must detect the lane markings for
the side collision mitigation with steering inter-
vention to be active.
Sensors
Side collision mitigation
The system is controlled by the following sen-
sors:
Principle
The side-collision warning helps to avoid an
impending side collision.
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Camera behind the windshield.
Radar sensors, side, front.
Radar sensors, side, rear.
General information
Turning the side collision warning
on/off
1.
Apps menu
2. "Vehicle"
3. "Driving settings"
4. "Driver Assistance"
5. "Safety and warnings"
6. "Side collision warning"
7. Select the desired setting.
Radar sensors monitor the space next to the
vehicle when traveling faster than a minimum
speed and up to approx. 130 mph/210 km/h.
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