2017 MAZDA MODEL CX-9 lane assist
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i-ACTIVSENSE
*Some models.
i-ACTIVSENSE *
i-ACTIVSENSE is a collective term covering a series of advanced safety and driver support
systems which make use of a Forward Sensing Camera (FSC) and radar sensors. These
systems consist of active safety and pre-crash safety systems.
These systems are designed to assist the driver in safer driving by reducing the load on the
driver and helping to avert collisions or reduce their severity. However, because each system
has its limitations, always drive carefully and do not rely solely on the systems.
Active Safety Technology
Active Safety Technology supports safer driving by helping the driver to recognize potential
hazards and avert accidents.
Driver awareness support systems
Nighttime visibility
Adaptive Front Lighting System (AFS) .............................................................................. 4-87
High Beam Control System (HBC) .................................................................................... 4-88
Rear side detection
Blind Spot Monitoring (BSM) ............................................................................................ 4-91
Inter-vehicle distance recognition
Distance Recognition Support System (DRSS) .................................................................. 4-97
Rear obstruction detection when leaving a parking space
Rear Cross Traffi c Alert (RCTA) ...................................................................................... 4-101
Driver support systems
Inter-vehicle distance
Mazda Radar Cruise Control (MRCC) ............................................................................. 4-105
Lane departure
Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) ............... 4-116
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Pre-Crash Safety Technology
Pre-crash safety technology is designed to assist the driver in averting collisions or reduce
their severity in situations where they cannot be avoided.
Collision damage reduction in low vehicle speed range
Forward driving
Smart City Brake Support (SCBS) ................................................................................... 4-128
Collision damage reduction in medium/high speed range
Smart Brake Support (SBS) .............................................................................................. 4-133
Camera and Sensors
Forward sensing camera (FSC)
The Forward Sensing Camera (FSC) determines the conditions ahead of the vehicle while
traveling at night and detects traffi c lanes. The following systems also use the Forward
Sensing Camera (FSC).
High Beam Control system (HBC)
Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
Smart Brake Support (SBS)
The Forward Sensing Camera (FSC) is installed at the top of the windshield near the
rearview mirror.
Refer to Forward Sensing Camera (FSC) on page 4-136 .
Radar sensor (front)
The radar sensor (front) functions by detecting the radio waves refl ected off a vehicle ahead
sent from the radar sensor. The following systems also use the radar sensor (front).
Mazda Radar Cruise Control (MRCC)
Distance Recognition Support System (DRSS)
Smart Brake Support (SBS)
The radar sensor (front) is mounted behind the radiator grille.
Refer to Radar Sensor (Front) on page 4-139 .
Laser sensor (front)
The laser sensor (front) emits a near-infrared laser beam and receives the beam refl ected
off the refl ective surface of a vehicle in front, and the detected beam is then used for
measurement. The following systems also use the laser sensor (front).
Smart City Brake Support (SCBS)
Smart Brake Support (SBS)
The laser sensor (front) is installed at the top of the windshield near the rearview mirror.
Refer to Laser Sensor (Front) on page 4-142 .
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i-ACTIVSENSE
*Some models.
Blind Spot Monitoring (BSM) *
The Blind Spot Monitoring (BSM) is designed to assist the driver in checking the area to the
rear of the vehicle on both sides during lane changes by notifying the driver of the presence
of vehicles approaching from the rear in an adjacent lane.
The Blind Spot Monitoring (BSM) detects vehicles approaching from the rear while
traveling in the forward direction at a speed of 10 km/h (6.3 mph) or faster and notifi es
the driver by turning on the Blind Spot Monitoring (BSM) warning indicator light and
displaying the vehicle detection screen (vehicles with multi-information display and active
driving display).
If the turn signal lever is operated to signal a turn in the direction in which the Blind Spot
Monitoring (BSM) warning indicator light is illuminated while the approaching vehicle is
detected, the Blind Spot Monitoring (BSM) notifi es the driver of possible danger by turning
on the Blind Spot Monitoring (BSM) warning indicator light, and by activating the warning
sound and the warning screen indicator display (vehicles with multi-information display and
active driving display).
The detection area on this system covers the driving lanes on both sides of the vehicle and
from the rear part of the front doors to about 50 m (164 ft) behind the vehicle.
Detection areas Your vehicle
WARNING
Always check the surrounding area visually before making an actual lane change:
The system is only designed to assist you in checking for vehicles at your rear when
making a lane change. Due to certain limitations with the operation of this system, the
Blind Spot Monitoring (BSM) warning indicator light, the warning sound and the warning
screen indicator display may not activate or they might be delayed even though a vehicle
is in an adjacent driving lane. Always make it your responsibility as a driver to check the
rear.
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i-ACTIVSENSE
*Some models.
Lane-keep Assist System (LAS) & Lane Departure
Warning System (LDWS)
*
The Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) alerts the
driver that the vehicle may be deviating from its lane and it provides steering assistance to
help the driver stay within the vehicle lanes.
The Forward Sensing Camera (FSC) detects the white lines (yellow lines) of the vehicle
lane in which the vehicle is traveling and if the system determines that the vehicle may
deviate from its lane, it operates the electric power steering to assist the driver's steering
operation. The system also alerts the driver by activating a lane departure warning sound,
vibrating the steering wheel, and indicating an alert in the display.
Refer to Forward Sensing Camera (FSC) on page 4-136 .
Forward Sensing
Camera (FSC)
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WARNING
Do not rely completely on the Lane-keep Assist System (LAS) & Lane Departure
Warning System (LDWS):
The Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) is not an
automatic driving system. In addition, the system is not designed to compensate for a
driver's lack of caution, and over-reliance on the system could lead to an accident.
The detection ability of the Lane-keep Assist System (LAS) & Lane Departure Warning
System (LDWS) is limited. Always stay on course using the steering wheel and drive
with care.
Do not use the Lane-keep Assist System (LAS) & Lane Departure Warning System
(LDWS) in the following cases:
The system may not operate adequately according to the actual driving conditions,
resulting in an accident.
Driving on roads with tight curves.
Driving under bad weather conditions (rain, fog, and snow).
Slippery roads such as ice or snow-bound roads.
Roads with heavy traffi c and insuffi cient distance between vehicles.
Roads with no white (yellow) lane lines.
Narrow roads resulting from road construction or lane closures.
The vehicle is driven on a temporary lane or section with a closed lane resulting from
road construction where there may be multiple white (yellow) lane lines or they are
interrupted.
The tire pressures are not adjusted to the specifi ed pressure.
Tires of a diff erent specifi ed size are used, such as an emergency spare tire.
CAUTION
Heed the following cautions so that the Lane-keep Assist System (LAS) & Lane Departure
Warning System (LDWS) can operate normally.
Do not modify the suspensions.
Always use wheels of the specifi ed type and size for the front and rear wheels. Consult
an Authorized Mazda Dealer for tire replacement.
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NOTE
When the turn signal lever is operated for a lane change, the Lane-keep Assist System
(LAS) & Lane Departure Warning System (LDWS) is automatically disabled. The
Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) becomes
operational again when the turn signal lever is returned and the system detects white
(yellow) lane lines while the vehicle is being driven normally within its vehicle lane.
If the steering wheel, accelerator pedal, or brake pedal is operated abruptly and the
vehicle moves close to a white (yellow) line, the system determines that the driver is
making a lane change and the Lane-keep Assist System (LAS) & Lane Departure Warning
System (LDWS) operation is temporarily canceled. The Lane-keep Assist System (LAS)
& Lane Departure Warning System (LDWS) becomes operational again when the system
detects white (yellow) lane lines while the vehicle is being driven normally within its
vehicle lane.
If the vehicle deviates from its lane repeatedly within a short period of time, the Lane-
keep Assist System (LAS) & Lane Departure Warning System (LDWS) may not operate.
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When white (yellow) lane lines are not detected, the Lane-keep Assist System (LAS) &
Lane Departure Warning System (LDWS) does not operate.
Under the following conditions, the Lane-keep Assist System (LAS) & Lane Departure
Warning System (LDWS) may not be able to detect white (yellow) lane lines correctly and
it may not operate normally.
If an object placed on the dashboard is refl ected in the windshield and picked up by the
camera.
Heavy luggage is loaded in the luggage compartment or on the rear seat and the
vehicle is tilted.
The tire pressures are not adjusted to the specifi ed pressure.
Tires other than conventional tires are equipped.
When the vehicle is driven on the guiding branch to or from the rest area or tollgate of
a highway.
The white (yellow) lane lines are less visible because of dirt or fading/patchiness.
A vehicle in front of your vehicle is running near a white (yellow) lane line making it
less visible.
A white (yellow) lane line is less visible because of bad weather (rain, fog, or snow).
The vehicle is driven on a temporary lane or section with a closed lane resulting
from construction where there may be multiple white (yellow) lane lines or they are
interrupted.
A misleading line is picked up on the road such as a temporary line for construction,
or because of shade, lingering snow, or grooves fi lled with water.
The surrounding brightness suddenly changes such as when entering or exiting a
tunnel.
The illumination of the headlights is weakened because of dirt or the optical axis is
deviated.
The windshield is dirty or foggy.
The windshield, camera is fogged (water droplets).
Back-light is refl ected off the road surface.
The road surface is wet and shiny after rain, or there are puddles on the road.
The shade of a guardrail parallel to a white (yellow) lane line is cast on the road.
The width of the driving lane is narrow or wide.
Driving on roads with tight curves.
The road is excessively uneven.
The vehicle is shaken after hitting a road bump.
There are two or more adjacent white (yellow) lane lines.
There are various road markings or lane markings of various shapes near an
intersection.
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System Operation
Make sure that the Lane-keep Assist
System (LAS) & Lane Departure Warning
System (LDWS) OFF switch indicator
light is turned off. When the Lane-keep
Assist System (LAS) & Lane Departure
Warning System (LDWS) OFF switch
indicator light is turned on, press the
switch and make sure that the switch
indicator light turns off.
Indicator light
The Lane-keep Assist System (LAS) &
Lane Departure Warning System (LDWS)
indication (white) is displayed in the
multi-information display, and the system
goes on stand-by.
(White) Drive the vehicle in the center of the
vehicle lane while the system is on
standby. When all of the following
conditions are met, the Lane-keep Assist
System (LAS) & Lane Departure Warning
System (LDWS) indication (green) is
displayed in the multi-information display,
and the system becomes operational.
(Green)
The engine is running.
The vehicle speed is about 60 km/h (37
mph) or faster.
The system detects white (yellow) lane
lines on both the right and left sides.
The driver is operating the steering
wheel.
The driving lane is neither narrow nor
wide.
The Lane-keep Assist System (LAS) &
Lane Departure Warning System (LDWS)
goes on stand-by status in the following
cases:
The system cannot detect white (yellow)
lane lines.
The vehicle speed is less than about 60
km/h (37 mph).
The ABS/TCS/DSC is operating.
The TCS is turned off.
(If the TCS is turned off while the
system is operational, a warning beep is
heard and the system goes on standby.)
The vehicle is making a sharp curve.
The vehicle is making a curve at an
inadequate speed.
The driver takes his or her hands off the
steering wheel (not holding the steering
wheel).
Sudden acceleration/deceleration.
Driving on winding roads.
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