Mazda 3 Hatchback (2018 year). Manual - part 16

▼ 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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Do not disassemble or modify the Forward Sensing Camera (FSC).

Disassembly or modification of the Forward Sensing 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 regarding cleaning the interior side of the

windshield around the Forward 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 rearview 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 not use tires with significantly different wear
patterns on the same vehicle as the system may not operate normally.

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The Forward Sensing Camera (FSC) includes a function for detecting a soiled windshield

and informing the driver, however, depending on the conditions, it may not detect plastic
shopping bags, ice or snow on the windshield. In such cases, the system cannot accurately
determine a vehicle ahead and may not be able to operate normally. Always drive carefully
and pay attention to the road ahead.

NOTE



In the following cases, the Forward Sensing Camera (FSC) cannot detect target objects
correctly, and each system may be unable to operate normally.



The height of the vehicle ahead is low.



You drive your vehicle at the same speed as the vehicle ahead.



Headlights are not turned on during the night or when going through a tunnel.



In the following cases, the Forward Sensing Camera (FSC) may not be able to detect
target objects correctly.



Under bad weather condition, such as rain, fog and snow.



The window washer is being used or the windshield wipers are not used when it's
raining.



Ice, fog, snow, frost, rainfall, dirt, or foreign matter such as a plastic bag is stuck on the
windshield.



Trucks with low loading platforms and vehicles with an extremely low or high profile.



When driving next to walls with no patterning (including fences and longitudinally
striped walls).



The taillights of the vehicle ahead are turned off.



A vehicle is outside the illumination range of the headlights.



The vehicle is making a sharp turn, or ascending or descending a steep slope.



Entering or exiting a tunnel.



Heavy luggage is loaded causing the vehicle to tilt.



Strong light is shone at the front of the vehicle (back light or high-beam light from
on-coming vehicles).



There are many light emitters on the vehicle ahead.



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



Elongated luggage or cargo is loaded onto installed roof rails and covers the Forward
Sensing Camera (FSC).



Exhaust gas from the vehicle in front, sand, snow, and water vapor rising from
manholes and grating, and water splashed into the air.



When towing a malfunctioning vehicle.



The vehicle is driven with tires having significantly different wear.



The vehicle is driven on down slopes or bumpy roads.



There are water puddles on the road.

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

The surroundings are dark such as during the night, early evening, or early morning, or
in a tunnel or indoor parking lot.



The illumination brightness of the headlights is reduced or the headlight illumination is
weakened due to dirt or a deviated optical axis.



The target object enters the blind spot of the Forward Sensing Camera (FSC).



A person or object bursts onto the road from the shoulder or cuts right in front of you.



You change lanes and approach a vehicle ahead.



When driving extremely close to the target object.



Tire chains or a temporary spare tire is installed.



The vehicle ahead has a special shape. For example, a vehicle towing a trailer house or
a boat, or a vehicle carrier carrying a vehicle with its front pointed rearward.



If the Forward Sensing Camera (FSC) cannot operate normally due to backlight or fog,
the system functions related to the Forward Sensing Camera (FSC) are temporarily
stopped and the following warning lights turn on. However, this does not indicate a
malfunction.



High Beam Control System (HBC) warning light (amber)



Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) warning
light



Smart Brake Support/Smart City Brake Support (SBS/SCBS) warning light (amber)



If the Forward Sensing Camera (FSC) cannot operate normally due to high temperatures,
the system functions related to the Forward Sensing Camera (FSC) are temporarily
stopped and the following warning lights turn on. However, this does not indicate a
malfunction. Cool down the area around the Forward Sensing Camera (FSC) such as by
turning on the air conditioner.



High Beam Control System (HBC) warning light (amber)



Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) warning
light



Smart Brake Support/Smart City Brake Support (SBS/SCBS) warning light (amber)



If the Forward Sensing Camera (FSC) detects that the windshield is dirty or foggy, the
system functions related to the Forward Sensing Camera (FSC) are temporarily stopped
and the following warning lights turn on. However, this does not indicate a problem.
Remove the dirt from the windshield or press the defroster switch and defog the
windshield.



High Beam Control System (HBC) warning light (amber)



Lane-keep Assist System (LAS) & Lane Departure Warning System (LDWS) warning
light



Smart Brake Support/Smart City Brake Support (SBS/SCBS) warning light (amber)

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

If there are recognizable cracks or damage caused by flying gravel or debris on the
windshield, always have the windshield replaced. Consult an Authorized Mazda Dealer
for replacement.

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Radar Sensor (Front)

Your vehicle is equipped with a radar sensor (front).
The following systems also use the radar sensor (front).



Distance Recognition Support System (DRSS)



Mazda Radar Cruise Control (MRCC)



Smart Brake Support (SBS)

The radar sensor (front) functions by detecting the radio waves reflected off a vehicle ahead
or an obstruction sent from the radar sensor.
The radar sensor (front) is mounted behind the front emblem.

Radar sensor (front)

If the Smart Brake Support/Smart City Brake Support (SBS/SCBS) Warning Light (amber)
is illuminated, the area around the radar sensor may be dirty. Refer to “Warning Guidance”
in the center display (Type B audio).
Refer to If a Warning Light Turns On or Flashes on page 7-25.

CAUTION

Heed the following precautions to assure correct operation of each system.

Do not adhere stickers (including transparent stickers) to the surface of the radiator grille

and front emblem in and around the radar sensor (front), and do not replace the radiator
grille and front emblem with any product that is not a genuine product designed for use
with the radar sensor (front).

The radar sensor (front) includes a function for detecting soiling of the radar sensor's front

surface and informing the driver, however, depending on the conditions, it may require time
to detect or it may not detect plastic shopping bags, ice or snow. If this occurs, the system
may not operate correctly, therefore always keep the radar sensor (front) clean.

Do not install a grille guard.
If the front part of the vehicle has been damaged in a vehicle accident, the position of the

radar sensor (front) may have moved. Stop the system immediately and always have the
vehicle inspected at an Authorized Mazda Dealer.

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Do not use the front bumper to push other vehicles or obstructions such as when pulling

out of a parking space. Otherwise, the radar sensor (front) could be hit and its position
deviated.

Do not remove, disassemble, or modify the radar sensor (front).
For repairs, replacement or paint work around the radar sensor (front), consult an

Authorized Mazda Dealer.

Do not modify the suspension. If the suspension are modified, the vehicle's posture could

change and the radar sensor (front) may not be able to correctly detect a vehicle ahead or
an obstruction.

NOTE



Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions correctly and each system may not operate normally.



The rear surface of a vehicle ahead does not reflect radio waves effectively, such as an
unloaded trailer or an automobile with a loading platform covered by a soft top,
vehicles with a hard plastic tailgate, and round-shaped vehicles.



Vehicles ahead with low vehicle height and thus less area for reflecting radio waves.



Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its tires
and onto your windshield.



The trunk/luggage compartment is loaded with heavy objects or the rear passenger
seats are occupied.



Ice, snow, or soiling is on the front surface of the front emblem.



During inclement weather such as rain, snow, or sand storms.



When driving near facilities or objects emitting strong radio waves.



Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions.



The beginning and end of a curve.



Roads with continuous curves.



Narrow lane roads due to road construction or lane closures.



The vehicle ahead enters the radar sensor's blind spot.



The vehicle ahead is running abnormally due to accident or vehicle damage.



Roads with repeated up and down slopes



Driving on poor roads or unpaved roads.



The distance between your vehicle and the vehicle ahead is extremely short.



A vehicle suddenly comes close such as by cutting into the lane.



To prevent incorrect operation of the system, use tires of the same specified size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with significantly different wear patterns or tire pressures on the same vehicle (Including
the temporary spare tire).



If the battery power is weak, the system may not operate correctly.

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

If the vehicle is driven on a road with little traffic and few vehicles ahead or obstructions
for the radar sensor (front) to detect, the sensor detects that the radar sensor (front) is
dirty and the Smart Brake Support/Smart City Brake Support (SBS/SCBS) Warning Light
(amber) may be temporarily turned on. However, it does not indicate a malfunction.

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Radar Sensors (Rear)

Your vehicle is equipped with radar sensors (rear). The following systems also use the radar
sensors (rear).



Blind Spot Monitoring (BSM)



Rear Cross Traffic Alert (RCTA)

The radar sensors (rear) function by detecting the radio waves reflected off a vehicle
approaching from the rear or an obstruction sent from the radar sensor.

Sedan

Hatchback

Radar sensors (rear)

Radar sensors (rear)

The radar sensors (rear) are installed inside the rear bumper, one each on the left and right
sides.
Always keep the surface of the rear bumper near the radar sensors (rear) clean so that the
radar sensors (rear) operate normally. Also, do not apply items such as stickers.
Refer to Exterior Care on page 6-63.

CAUTION

If the rear bumper receives a severe impact, the system may no longer operate normally. Stop
the system immediately and have the vehicle inspected at an Authorized Mazda Dealer.

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NOTE



The detection ability of the radar sensors (rear) has limitations. In the following cases,
the detection ability may lower and the system may not operate normally.



The rear bumper near the radar sensors (rear) has become deformed.



Snow, ice or mud adheres to the radar sensors (rear) on the rear bumper.



Under bad weather conditions such as rain, snow and fog.



Under the following conditions, the radar sensors (rear) cannot detect target objects or it
may be difficult to detect them.



Stationary objects on a road or a road side such as small, two-wheeled vehicles,
bicycles, pedestrians, animals, and shopping carts.



Vehicle shapes which do not reflect radar waves well such as empty trailers with a low
vehicle height and sports cars.



Vehicles are shipped with the direction of the radar sensors (rear) adjusted for each
vehicle to a loaded vehicle condition so that the radar sensors (rear) detect approaching
vehicles correctly. If the direction of the radar sensors (rear) has deviated for some
reason, have the vehicle inspected at an Authorized Mazda Dealer.



For repairs or replacement of the radar sensors (rear), or bumper repairs, paintwork, and
replacement near the radar sensors, consult an Authorized Mazda Dealer.



Turn off the system while pulling a trailer or while an accessory such as a bicycle carrier
is installed to the rear of the vehicle. Otherwise, the radio waves emitted by the radar will
be blocked causing the system to not operate normally.



The radar sensors are regulated by the relevant radio wave laws of the country in which
the vehicle is driven. If the vehicle is driven abroad, authorization from the country in
which the vehicle is driven may be required.

When Driving

i-ACTIVSENSE

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Cruise Control

*

With cruise control, you can set and automatically maintain any speed of more than about
25 km/h (16 mph).

WARNING

Do not use the cruise control under the following conditions:
Using the cruise control under the following conditions is dangerous and could result in loss of
vehicle control.

Hilly terrain
Steep inclines
Heavy or unsteady traffic
Slippery or winding roads
Similar restrictions that require inconsistent speed

▼ Cruise Control Switch

ON switch

RES/+ switch

SET- switch

OFF/CAN 
switch

When Driving

Cruise Control

*Some models.

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NOTE
If your Mazda has the following steering switch, your Mazda is equipped with the Mazda
Radar Cruise Control (MRCC) system.
Refer to Mazda Radar Cruise Control (MRCC) on page 4-102.

CANCEL switch

RES switch

OFF switch

switch

switch

MODE switch

SET- switch

SET+ switch

▼ Cruise Main Indication (White),

Cruise Set Indication (white)/
Indicator Light (Green)

Cruise main indication (white)

The cruise main indication (white) is
displayed in the instrument cluster when
the cruise control system is activated.

Cruise set indication (white)/indicator
light (green)

The cruise set indication (white) is
displayed in the instrument cluster and the
cruise set indicator light (green) turns on
when a cruising speed has been set.

▼ Activation/Deactivation

To activate the system, press the ON
switch. The cruise main indication (white)
is displayed.
To deactivate the system, press the
OFF/CAN switch.
The cruise main indication (white) turns
off.

WARNING

Always turn off the cruise control system
when it is not in use:
Leaving the cruise control system in an
activation-ready state while the cruise
control is not in use is dangerous as the
cruise control could unexpectedly activate
if the activation button is accidentally
pressed, and result in loss of vehicle control
and an accident.

When Driving

Cruise Control

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