2018 MAZDA MODEL 3 HATCHBACK lane assist

Lane-keep Assist System (LAS) & Lane DepartureWarning System (LDWS)
*
The LAS&LDWS alerts the driver th at 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 (yello w lines) of the vehicle
lane in which the vehicle is traveling and if the system determ ines 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 la ne departure warning sound,
vibrating the steering wheel, and indicating an alert in the di splay. Use the system when you
drive the vehicle on ro ads with white (yellow) lines such as ex pressways and highways.
Refer to Forward Sensing Camera (FSC) on page 4-131.
Forward Sensing
Camera (FSC)
WA R N I N G
Do not rely completely on the LAS&LDWS:
 The LAS&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 LAS&LDWS is limi ted. Always stay on course using the steering
wheel and drive with care.
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NOTE
The LAS&LDWS does not operate until the system detects white (yellow) lane lines on
either the left or right.
When the system detects a white (yellow) lane line on one side only, the system will not
operate the steering wheel operation assist and the warning for the lane line on the side
that is not being detected. The steering wheel operation assist and the warning is only for
a lane deviation on the side that is being detected.
If you take your hands off the steering wheel (not holding the steering wheel), the warning
sound is activated and an alert is indicated in the active driving display.

If the steering wheel is held lightly, or depending on the road conditions, the system may
detect that you have released the steering wheel (not holding the steering wheel) even if
you are holding it, and display a message in the active driving display.
The timing at which the lane departure warning is activated and the steering wheel
operation assist is performed varies.
The following settings for the LAS&LDWS can be changed. Refer to Personalization
Features on page 9-12.
Steering operation assist operational/non-operational
Cancel sensitivity (likelihood of steering assist)
Vehicle lane line display
When the LAS&LDWS detects white (yellow) lines on both the left and right sides and
becomes operational, the vehicle lane lines are indicated in th e active driving display.
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Auto cancel
In the following cases, the LAS&LDWS is automatically canceled and the vehicle lane lines
(stand-by) are indicated in the active driving display. In addi tion, when the LAS&LDWS
becomes operational, the system turns back on automatically and the vehicle lane lines
(operational) are indicated in the active driving display.
The temperature inside the camera is high or low.
The windshield around the camera is foggy.
The windshield around the camera is blocked by an obstruction, causing poor forward
visibility.
Auto cancel of warning/steering assist
When the following operations are performed, the LAS&LDWS opera tion is automatically
canceled. The LAS&LDWS is automat ically re-enabled after the operation.
The steering wheel is operated abruptly.
The brake pedal is depressed.
The accelerator pedal is suddenly depressed.
(To cancel the automatic sensitivity cancel function, deselect “Cancel sensitivity” in the
personalization features setting.)
The turn signal lever is operated.
The vehicle crosses a lane line.
NOTE
After the operation, the LAS&LDWS operation may not operate for a period of 5 seconds
at the most until the lane lines are detected.
Under the following conditions, the LAS& LDWS cancels the warning/steering assist
automatically.
The driver takes his/her hands off the steering wheel.
(The LAS&LDWS is designed to assist the driver's steering operation and it will resume
operation automatically when the driver holds the steering wheel.)
The DSC OFF switch is pressed to cancel the DSC.
Steering operation assist OFF (non-operational)
The steering operation assist for the LAS&LDWS can be changed t o non-operational (OFF).
Refer to Setting Change (Personal ization Features) on page 9-12.
When the steering operation assist has been changed to inoperab le (OFF), operate the
LAS&LDWS as follows:
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▼Lane Departure Warning
When the system determines that
the vehicle might be deviating from its lane, the following
warnings are activated:
A beep sound or rumble sound*1 is activated, or the steering wheel vibrates.
The LAS&LDWS warning light flashes.
The active driving display lane i ndication flashes (side which vehicle might be deviating
to).
Warning light (Flashes) Active Driving Display
NOTE
If you have set the lane departure warning sound to the beep sound/rumble sound*1
setting, the warning sound may not be heard depending on the surrounding noise
conditions.
If you have set the lane departure warning system to the steering wheel vibrations setting,
the vibration may not be felt dependi ng on the road surface conditions.
When the setting for the steering operation assist is changed to operational, the warnings
can be set to activate/not activate. (When the setting for the steering operation assist is
changed to non-operational, the warnings cannot be set to not activate.)
Refer to Setting Change (Personalization Features) on page 9-12.
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The LAS&LDWS can be changed to the following settings regardless of whether the
steering operation assist has been set to operational/non-operational. Always check the
setting status when driving the vehicle and make setting changes if necessary.
Refer to Setting Change (Persona lization Features) on page 9-12.
Steering wheel vibration: Strong/weak
Warning sound volume
Types of warnings (steering wheel vibration/beep sound/rumble sound*1)
*1 A rumble strip is a series of grooves in the road pavement surface positioned at specific
intervals, and when the vehicle passes over it a vibration and rumble sound is produced
which alerts the driver that the vehicle is departing from the lane.
The rumble sound is a reproduction of the sound which occurs when a vehicle passes
over a rumble strip.
Rumble
Groove
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In the following cases, the Forward Sensing Camera (FSC) determines that there is a
vehicle ahead and the SCBS may operate.
Objects on the road at the entrance to a curve.
Vehicles passing in the opposite lane while making a curve.
Metal objects, bumps, or protruding objects on the road.
When passing through a toll gate.
When passing through low gates, narrow gates, car washing machines, or tunnels.
If you suddenly come close to a vehicle ahead.
2-wheeled vehicles, pedestrians, animals or standing trees.
Vehicle is driven with some of the tires having significant wear.
(Manual transaxle)
If the vehicle is stopped by the Smart City Brake Support (SCBS) operation and the clutch
pedal is not depressed, the engine stops.
▼Smart City Brake Support (SCBS)
Indicator Light (Red)
If the Smart City Brake Support (SCBS) is
operating, the indicator light (red) flashes.

▼Collision Warning
If there is the possibil
ity of a collision with
a vehicle ahead, the beep sounds
continuously and a warning is indicated in
the active driving display.
NOTE
The operation distance and volume of the
collision warning can be changed. Refer
to Personalization Features on page 9-
12.
▼ Automatic Brake
Operation Display
The automatic brake operation display is
indicated on the active driving display
after the SCBS is operated.
NOTE
The collision warning beep sounds
intermittently while the SCBS brake or
brake assist (SCBS brake assist) is
operating.
If the vehicle is stopped by the SCBS
operation and the brake pedal is not
depressed, the warning beep sounds one
time after about 2 seconds and the SCBS
brake is automatically released.
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Forward Sensing Camera (FSC)
Your vehicle is equipped with a Forward Sensing Camera (FSC). The Forward Sensing
Camera (FSC) is positioned near t he rearview mirror and used by the following systems.
High Beam Control System (HBC)
Lane-keep Assist System (LAS) & Lane Departure Warning System ( LDWS)
Traffic Sign Recognition System (TSR)
Smart City Brake Support (SCBS)
Smart Brake Support (SBS)
Forward Sensing Camera (FSC)
The Forward Sensing Camera (FSC) determines the conditions ahead of the vehicle while
traveling at night and detects traffic lanes. The distance in w hich the Forward Sensing
Camera (FSC) can detect objects varies depending on the surroun ding conditions.
WA R N I N G
Do not modify the suspension:
If the vehicle height or inclination is changed, the system will not be able to correctly detect
vehicles ahead. This will result in the system not operating normally or mistakenly operating,
which could cause a serious accident.
CAUTION
 Do not apply accessories, stickers or film to the windshield near the Forward Sensing
Camera (FSC).
If the area in front of the Forward Sensing Camera (FSC) lens is obstructed, it will cause the
system to not operate correctly. Consequently, each system may not operate normally
which could lead to an unexpected accident.
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Do not disassemble or modify the Forward Sensing Camera (FSC).
Disassembly or modification of the Forward Se nsing Camera (FSC) will cause a malfunction
or mistaken operation. Consequently, each system may not operate normally which could
lead to an unexpected accident.
 Heed the following cautions to assure the correct operation of the Forward Sensing Camera
(FSC).
 Be careful not to scratch the Forward Sensing Camera (FSC) lens or allow it to get dirty.
 Do not remove the Forward Sensing Camera (FSC) cover.
 Do not place objects on the dashboard which reflect light.
 Always keep the windshield glass around the camera clean by removing dirt or fogging.
Use the windshield defroster to remove fogging on the windshield.
 Consult an Authorized Mazda Dealer regard ing cleaning the interior side of the
windshield around the Forw ard Sensing Camera (FSC).
 Consult an Authorized Mazda Dealer before performing repairs around the Forward
Sensing Camera (FSC).
 The Forward Sensing Camera (FSC) is installed to the windshield. Consult an Authorized
Mazda Dealer for windshield repair and replacement.
 When cleaning the windshield, do not allow glass cleaners or similar cleaning fluids to
get on the Forward Sensing Camera (FSC) lens. In addition, do not touch the Forward
Sensing Camera (FSC) lens.
 When performing repairs around the rearvi ew mirror, consult an Authorized Mazda
Dealer.
 Consult an Authorized Mazda Dealer regarding cleaning of the camera lens.
 Do not hit or apply strong force to the Forward Sensing Camera (FSC) or the area around
it. If the Forward Sensing Camera (FSC) is severely hit or if there are cracks or damage
caused by flying gravel or debris in the area around it, stop using the following systems
and consult an Authorized Mazda Dealer.
High Beam Control System (HBC)
 Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS)
 Traffic Sign Recognition System ( TSR)
 Smart City Brake Support (SCBS)
 Smart Brake Support (SBS)
 The direction in which the Forward Sensing Camera (FSC) is pointed has been finely
adjusted. Do not change the installation position of the Forward Sensing Camera (FSC) or
remove it. Otherwise, it could result in damage or malfunction.
 Always use tires for all wheels that are of the specified size, and the same manufacturer,
brand, and tread pattern. In addition, do no t use tires with significantly different wear
patterns on the same vehicle as the system may not operate normally.
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