Mazda 3 (2018 year). Instruction

▼ System Operation

If the LAS&LDWS OFF indicator light in the instrument cluster turns off when the ignition
is switched ON, the system goes on standby.

If the LAS&LDWS OFF indicator light in the instrument cluster turns on when the ignition
is switched ON, press the LAS&LDWS OFF switch so that the system goes on standby.

Drive the vehicle in the center of the vehicle lane while the system is on standby. The
system becomes operational when all of the following conditions are met.



The engine is running.



The vehicle speed is about 60 km/h (37 mph) or faster.



The system detects white (yellow) lane lines.
(If the system only detects a white (yellow) line on either the left or right the system only
operates for a departure in the direction being detected.)



The driving lane is neither narrow nor wide.

The LAS&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 DSC is turned off.
(If the DSC 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 steering wheel is operated abruptly.



The brake pedal is depressed.



The width of a lane is excessively narrow or wide.

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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 the 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 addition, 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 operation is automatically
canceled. The LAS&LDWS is automatically 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 to non-operational (OFF).
Refer to Setting Change (Personalization Features) on page 9-12.
When the steering operation assist has been changed to inoperable (OFF), operate the
LAS&LDWS as follows:

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System operation
If the LAS&LDWS OFF indicator light in the instrument cluster turns off when the ignition
is switched ON, the system goes on standby.

If the LAS&LDWS OFF indicator light in the instrument cluster turns on when the ignition
is switched ON, press the LAS&LDWS OFF switch so that the system goes on standby.

Drive the vehicle in the center of the vehicle lane while the system is on standby. The
system becomes operational when all of the following conditions are met.



The system detects white (yellow) lane lines on both the right and left sides, or on either
side.



The vehicle speed is about 60 km/h (37 mph) or faster.



The vehicle is driven on a straight road or road with gentle curves.



The engine is running.

The LAS&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 vehicle is making a sharp curve.



The vehicle is making a curve at an inappropriate speed.

NOTE



The LAS&LDWS remains on stand-by until it detects white (yellow) lines on both the left
and right sides, or on either side.



When the system detects a white (yellow) lane line on one side only, the system will not
activate warnings for the lane line on the side that is not being detected.



The distance and warning sensitivity (likelihood of a warning) which the system uses to
determine the possibility of a lane departure can be changed.
Refer to Setting Change (Personalization Features) on page 9-12.

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Auto cancel
Under the following conditions, the LAS&LDWS is automatically canceled. The
LAS&LDWS is automatically re-enabled when it becomes operational.



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 warnings)
When the following operations are performed, the LAS&LDWS determines that the driver
intends to make a lane change and the system operation is canceled automatically. The
LAS&LDWS resumes automatically after the operation.



The steering wheel is operated abruptly.



The brake pedal is depressed.



The accelerator pedal is depressed.
(To cancel the automatic sensitivity cancel function, deselect “Warning sensitivity” in the
personalization features setting.)



The turn signal lever is operated.



The vehicle crosses a lane line.

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▼ System Canceling

When the LAS&LDWS is turned off,
press the LAS&LDWS OFF switch.

The LAS&LDWS OFF indicator light
turns on.

NOTE



In the following cases, the LAS&LDWS
is canceled automatically and the
LAS&LDWS OFF indicator light turns
on. Have your vehicle inspected at an
Authorized Mazda Dealer.



There is a malfunction in the power
steering.



There is a malfunction in the DSC.



There is a malfunction in the Forward
Sensing Camera (FSC).



When the ignition is switched OFF, the
system status before it was turned off is
maintained. For example, if the ignition
is switched OFF with the lane-keep
system operable, the system will be
operable when the ignition is switched
ON the next time.

When the LAS&LDWS is canceled, the
vehicle lane lines are no longer indicated
in the active driving display.

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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

is activated, or the steering wheel vibrates.



The LAS&LDWS warning light flashes.



The active driving display lane indication 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

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 depending 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 (Personalization Features) on page 9-12.



Steering wheel vibration: Strong/weak



Warning sound volume



Types of warnings (steering wheel vibration/beep sound/rumble sound

)

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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Smart City Brake Support (SCBS)

The SCBS system alerts the driver of a possible collision using an indication in the display
and a warning sound when the Forward Sensing Camera (FSC) detects a vehicle ahead and
determines that a collision with a vehicle ahead is unavoidable while the vehicle is being
driven at a vehicle speed of about 4 to 80 km/h (2 to 50 mph). In addition, the system
reduces damage in the event of a collision by operating the brake control (Smart City Brake
Support (SCBS) brake) when the system determines that a collision is unavoidable while the
vehicle is being driven at a vehicle speed of about 4 to 30 km/h (2 to 18 mph). It may also
be possible to avoid a collision if the relative speed between your vehicle and the vehicle in
front of you is less than about 20 km/h (12 mph). In addition, when the driver depresses the
brake pedal while the system is in the operation range at about 4 to 30 km/h (2 to 18 mph),
the brakes are applied firmly and quickly to assist. (Brake Assist (Smart City Brake Support
(SCBS) brake assist))

Forward Sensing
Camera (FSC)

WARNING

Do not rely completely on the SCBS system:

The SCBS system is only designed to reduce damage in the event of a collision. Over reliance

on the system leading to the accelerator pedal or brake pedal being mistakenly operated
could result in an accident.

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The SCBS is a system which operates in response to a vehicle ahead. The system may not be

able to detect or react to 2-wheeled vehicles or pedestrians.

CAUTION

In the following cases, turn the system off to prevent a mis-operation:

The vehicle is being towed or when towing another vehicle.
The vehicle is on a chassis roller.
When driving on rough roads such as in areas of dense grass or off-road.

Refer to Stopping the Smart City Brake Support (SCBS) system Operation on page 4-127 on
how to turn off the SCBS system.

NOTE



The SCBS system will operate under the following conditions.



The engine is running.



The Smart Brake Support/Smart City Brake Support (SBS/SCBS) system warning light
(amber) does not illuminate.



(Rear-end collision warning)
The vehicle speed is about 4 to 80 km/h (2 to 50 mph).



(Brake control (Smart City Brake Support (SCBS) brake))
The vehicle speed is about 4 to 30 km/h (2 to 18 mph).



The SCBS system is not turned off.



Under the following conditions, the SCBS system may not operate normally:



The SCBS system will not operate if the driver is deliberately performing driving
operations (accelerator pedal and steering wheel).



If there is the possibility of partial contact with a vehicle ahead.



The vehicle is driven on a slippery road surface such as wet roads or icy or snow-bound
roads.



The braking performance is adversely affected due to cold temperatures or wet brakes.



The vehicle is driven at the same speed as the vehicle ahead.



The accelerator pedal is depressed.



The brake pedal is depressed.



The steering wheel is being operated.



The selector lever is being operated.

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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 possibility 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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▼ Stopping the Smart City Brake

Support (SCBS) System Operation

The SCBS system can be temporarily
deactivated.
Refer to Personalization Features on page
9-12.
When the SCBS system is turned off, the
Smart City Brake Support (SCBS) OFF
indicator light turns on.

When the engine is restarted, the system
becomes operational.

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Smart Brake Support (SBS)

The SBS system alerts the driver of a possible collision using a display and warning sound
if the radar sensor (front) and the Forward Sensing Camera (FSC) determine that there is the
possibility of a collision with a vehicle ahead while the vehicle is being driven at about 15
km/h or faster (10 mph or faster). Furthermore, if the radar sensor (front) and the Forward
Sensing Camera (FSC) determines that a collision is unavoidable, the automatic brake
control is performed to reduce damage in the event of a collision.
In addition, when the driver depresses the brake pedal, the brakes are applied firmly and
quickly to assist. (Brake Assist (SBS brake assist))

WARNING

Do not rely completely on the SBS system and always drive carefully:
The SBS is designed to reduce damage in the event of a collision, not avoid an accident. The
ability to detect an obstruction is limited depending on the obstruction, weather conditions,
or traffic conditions. Therefore, if the accelerator pedal or brake pedal is mistakenly operated it
could result in an accident. Always verify the safety of the surrounding area and depress the
brake pedal or accelerator pedal while keeping a safer distance from vehicles ahead or
on-coming vehicles.

CAUTION

In the following cases, turn the system off to prevent a mis-operation:

The vehicle is being towed or when towing another vehicle.
The vehicle is on a chassis roller.
When driving on rough roads such as in areas of dense grass or off-road.

NOTE



The SBS system operates when all of the following conditions are met:



The ignition is switched ON.



The SBS system is on.



The vehicle speed is about 15 km/h or faster (10 mph or faster).



The relative speed between your vehicle and the vehicle ahead is about 15 km/h or
faster (10 mph or faster).



The Dynamic Stability Control (DSC) is not operating.

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

The SBS system may not operate under the following conditions:



If the vehicle is accelerated rapidly and it comes close to a vehicle ahead.



The vehicle is driven at the same speed as the vehicle ahead.



The accelerator pedal is depressed.



The brake pedal is depressed.



The steering wheel is being operated.



The selector lever is being operated.



The turn signal is being used.



When the vehicle ahead is not equipped with taillights or the taillights are turned off.



When warnings and messages, such as a dirty windshield, related to the Forward
Sensing Camera (FSC) are being displayed in the center display.



Although the objects which activate the system are four-wheeled vehicles, the radar
sensor (front) could detect the following objects, determine them to be an obstruction, and
operate the SBS system.



Objects on the road at the entrance to a curve (including guardrails and snow banks).



A vehicle appears in the opposite lane while cornering or rounding a curve.



When crossing a narrow bridge.



When passing under a low gate or through a tunnel or narrow gate.



When entering an underground parking area.



Metal objects, bumps, or protruding objects on the road.



If you suddenly come close to a vehicle ahead.



When driving in areas where there is high grass or forage.



Two-wheeled vehicles such as motorbikes or bicycles.



Pedestrians or non-metallic objects such as standing trees.



When the system operates, the user is notified by the active driving display.



The SBS warning indication (amber) turns on when the system has a malfunction.
Refer to Warning Lights on page 4-24.

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▼ Smart Brake Support (SBS)

Indicator Light (Red)

If the SBS is operating, the indicator light
(red) flashes.

▼ Collision Warning

If there is the possibility of a collision with
a vehicle ahead, the beep sounds
continuously and a warning is indicated in
the active driving display.

▼ Stopping The Smart Brake Support

(SBS) System Operation

The SBS system can be temporarily
deactivated.
Refer to Personalization Features on page
9-12.
When the SBS system is turned off, the
SBS OFF indicator light turns on.

When the engine is restarted, the system
becomes operational.

NOTE
If the SBS system operation is turned off,
the Smart City Brake Support (SCBS)
system operation is turned off
simultaneously.

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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 the 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 which the Forward Sensing
Camera (FSC) can detect objects varies depending on the surrounding conditions.

WARNING

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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Mazda 3 (2018 year). Instruction - part 16