tires MAZDA MODEL 3 SEDAN 2019 Owner's Manual

Lane-keep Assist System(LAS)
*
▼Lane-keep Assist System (LAS)
The LAS provides steering assistance to
help the driver stay within the vehicle lane
if the vehicle might be deviating.
The forward sensing camera (FSC) detects
the white lines (ye
llow 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 electri c power steering to
assist the driver’s steering operation. The
system also alerts the driver by displaying
an alert on the mult i-information display
or the active driving display
*. Use the
system when you drive the vehicle on
roads with white (ye llow) lines such as
expressways and highways.
1. Forward sensing camera (FSC)
WA R N I N G
Do not rely completely on the LAS:
 The LAS is not an automated 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 functions of the LAS have limitations.
Always stay on course using the steering
wheel and drive with care.
 Do not use the LAS under the following
circumstances, otherwise it may result in
an accident.
 The vehicle is driven on slippery roads
such as icy or snow-covered roads, and
unpaved roads.
 Tires of a different specified size are
used, such as a temporary spare tire.
 Tires with insufficient tread are used.
 The tire pressures are not adjusted to
the specified pressure.
 The vehicle is being used to tow a
camper or boat trailer.
 Tire chains are used.
 The vehicle is driven on roads with lane
lines other than white (yellow) lines,
such as an expressway.
CAUTION
Heed the following cautions so that the LAS
can operate normally.
Do not modify the vehicle's suspensions.
 Always use wheels of the
specified type
and size for the front and rear wheels.
Consult an Authorized Mazda Dealer for
tire replacement.
NOTE
The system may not operate normally
under the following conditions.
The white (yellow) lane lines are less
visible because of dirt or paint flaking.
White (yellow) lane lines are less visible
because of bad weather (rain, fog, or
snow).
When Driving
i-ACTIVSENSE
4-150*Some models.
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Do not apply a strong force to a rear
ultrasonic sensor and rear camera:
When washing the vehicle, do not spray
highly pressurized water against a rear
ultrasonic sensor and rear camera, or rub it
strongly. In addition, do not hit the rear
bumper forcefully when loading and
unloading cargo Otherwise, the sensors
may not detect obstructions correctly
which could cause the SBS-R system to not
operate normally, or it could operate
unnecessarily.
CAUTION
When driving
off-road in areas where
there is grass or foliage, it is
recommended that the SBS-R system be
turned off.
 Always use tires of the specified size and
the same manufacturer, brand, and
tread pattern on all 4 wheels. In addition,
do not use tires with significantly
different wear patterns on the same
vehicle. Otherwise, the SBS-R system may
not operate normally.
 If ice or snow is stuck on the rear
ultrasonic sensor and rear camera they
may not be able to detect obstructions
correctly depending on the conditions. In
such cases, the system may not be able
to perform controls correctly. Always
drive carefully and pay attention to the
rear of the vehicle.
NOTE
The vehicle posture changes depending
on the accelerator pedal, brake pedal
and steering wheel operations, which
could make it difficult for the system to
recognize an obstruction, or it could
facilitate unnecessary detection. In such
cases, the SBS-R may or may not
operate.
The SBS-R system will operate under the
following conditions.
The engine is running.
The shift lever (manual transmission
vehicle) or the selector lever
(automatic transmission vehicle) is in
the R (reverse) position.
The slope is less than 5 %.
i-ACTIVSENSE warning indication/
warning light is no t displayed in the
multi-information display.
The vehicle speed is between about 2
to 8 km/h (2 to 4 mph).
The SBS-R is not turned off.
The DSC is not malfunctioning.
In the following cases, the rear
ultrasonic sensor and rear camera
cannot detect obstructions and the
SBS-R may not operate.
The height of the obstruction is low
such as low walls or trucks with low
loading platforms.
The height of the obstruction is high
such as trucks with high loading
platforms.
The obstruction is small.
The obstruction is thin such as a
signpost.
The surface of the obstruction is not
pointed vertically relative to the
vehicle.
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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 Departure Warning System
(LDWS)
 Traffic Sign Recognition System
(TSR)
 Distance & Speed Alert (DSA)
 Driver Attention Alert (DAA)
 Driver Monitoring (DM)
 Mazda Radar Cruise Control (MRCC)
 Mazda Radar Cruise Control with
Stop & Go function (MRCC with Stop
& Go function)
 Lane-keep Assist System (LAS)
 Traffic Jam Assist (TJA)
 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 windsh ield. 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 lo ading 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.
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.
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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 front radar sensor, and do
not replace the radiator grille and front
emblem with any product that is not a
genuine product designed for use with
the front radar sensor.
 The front radar sensor 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 front radar
sensor 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 front radar sensor may
have moved. Stop the system
immediately and always have the vehicle
inspected at an Authorized Mazda
Dealer.
 Do not use the front bumper to push
other vehicles or obstructions such as
when pulling out of a parking space.
Otherwise, the front radar sensor could
be hit and its position deviated.
 Do not remove, disa ssemble, or modify
the front radar sensor.
 For repairs, replacement or paint work
around the front radar sensor, consult an
Authorized Mazda Dealer.
Do not modify the suspension. If the
suspension are modified, the vehicle's
posture could change and the front
radar sensor may not be able to correctly
detect a vehicle ahead or an obstruction.
NOTE
Under the following co nditions, the front
radar sensor 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 co nditions, the front
radar sensor may not be able to detect
vehicles ahead or obstructions.
The beginning and end of a curve.
Roads with continuous curves.
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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.
When driving on roads with little traffic
and few vehicles ahead or obstructions
for the front radar sensor to detect,
“Safety and Driver Support Systems
Temporarily Disabled. Front Radar
Obscured. Drive Safely” may be
temporarily displayed, however, this
does not indicate a problem.
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.
Front Side Radar Sensor*
▼Front Side Radar Sensor
Your vehicle is equipped with front side
radar sensor. The following systems also
use the front side radar sensor.
Front Cross Traffic Alert (FCTA)
The front side radar sensor function by
detecting the radio waves reflected off a
vehicle approaching from the front or an
obstruction sent from the radar sensor.
1. Front side radar sensor

The front side radar sensor are installed
inside the front bumper, one each on the
left and right sides.
Always keep the surface of the front
bumper near the front side radar sensor
clean so that the front side radar sensor
operate normally. Also, do not apply items
such as stickers.
Refer to Exterior Care on page 6-43.
CAUTION
If the front 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.
When Driving
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Tire Pressure MonitoringSystem (TPMS)
▼Tire Pressure Monitoring System
(TPMS)
The TPMS monitors the air pressure of
each tire and if it decreases below the
specified value, the system notifies the
driver by turning on the TPMS warning
light in the instrument cluster and
indicating a message on the
multi-information display.
For the TPMS, the air pressure data sent
from the tire pressure s
ensors installed on
each wheel via radio signal is received by
the receiver unit in t he vehicle to monitor
the tire pressures.
1. Tire pressure sensors

In addition, the current tire pressures can
be checked using the center display.
Refer to the Information section in the
Mazda Connect Owner's Manual.
NOTE
When the ambient temperature is low,
the tire temperatures also decrease. If
the tire temperatures decrease, the air
pressure in the tires will also decrease
which could turn on the TPMS warning
light.
Before driving, visually inspect the tires
for abnormalities. Additionally, inspect
the tire pressures monthly. A digital type
air pressure gauge is recommended for
inspecting the tire pressures.
The TPMS is not a substitute for your own
periodic inspection of the tires. Always
inspect the tires yourself periodically.
CAUTION
 Each tire, includ ing the spare (if
provided), should be checked monthly
when cold and inflated to the
inflation
pressure recommended by the vehicle
manufacturer on the vehicle placard or
tire inflation pressure label. (If your
vehicle has tires of a different size than
the size indicated on the vehicle placard
or tire inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that
illuminates a low tire pressure telltale
when one or more of your tires is
significantly under-inflated. Accordingly,
when the low tire pressure telltale
illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle's handling and
stopping ability.
When Driving
Tire Pressure Monitoring System (TPMS)
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Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver's responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating
properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as long as the
malfunction exists. When the
malfunction indicator is illuminated, the
system may not be able to detect or
signal low tire pressure as intended.
TPMS malfunctions may occur for a
variety of reasons, including the
installation of replacement or alternate
tires or wheels on the vehicle that
prevent the TPMS from functioning
properly. Always check the TPMS
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS to
continue to function properly.
 To avoid false readings, the system
samples for a little while before
indicating a problem. As a result it will
not instantaneously register a rapid tire
deflation or blow out.▼ If there is a problem with the Tire
Pressure Monitoring System
(TPMS)
If the TPMS warning light flashes, there
may be a problem with the system.
Consult an Authorized Mazda Dealer to
have the system inspected.
Refer to Tire Pressu
re Monitoring System
(TPMS) Warning Indication/Warning
Light (Flashing) on page 7-32.
In the following cases, the system cannot
recognize the tire pressures correctly and
the TPMS warning light may flash.
There is equipment or a device nearby
emitting radio signals the same as a tire
pressure sensor.
A metallic object such as a non-genuine
electronic device is installed near the
center of the dashboard (obstructs the
radio signals from the tire pressure
sensors to the receiver).
A device such as one of the following is
used in the cabin.
Electronic devices such as a computer.
Converter devices such as a DC-AC
converter.
There is a large accumulation of snow or
ice around the vehicle tires.
The battery in a tir e pressure sensor is
dead.
A wheel not equipped with a tire
pressure sensor is used.
Tires employing steel in the sidewall of
the tire are installed.
Tire chains are used.
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Tire Pressure Monitoring System (TPMS)
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▼When a tire pressure decreases
If the TPMS warning light turns on, a tire
pressure may be low. Inspect the tire
pressures and adjust them to the correct
inflation pressure.
Refer to Tire Pressure Monitoring System
(TPMS) Warning Ind
ication/Warning
Light (Turns on) on page 7-36.
▼ Tires and Wheels
CAUTION
When inspecting/adjusting the tire
pressures, do not apply excessive force to
the air valve of the tire pressure sensor.
Otherwise, the tire pressure sensor could be
damaged.
When changing tires and wheels
When changing the tires or wheels (such
as installing winter tires), it will be
necessary to register the ID signal code of
the tire pressure s
ensor to the TPMS.
Have an Authorized Mazda Dealer do the
registration or register the ID signal codes
of the tire pressure sensors using the
following procedure.
NOTE
The tire pressure sensors on each wheel
have a unique ID signal code. For the
TPMS to operate correctly, the ID signal
codes of the tire pressure sensors need to
be registered to the system.
1. Wait about 15 minutes after changing a
tire or wheel.
2. After 15 minutes have passed, drive
the vehicle at a speed of about 25 km/h
(16 mph) or faster for 3 minutes or
longer. While driving, the ID signal
codes of the tire pressure sensors are
automatically registered.
NOTE
If you drive the vehicle within 15 minutes
of changing a tire or wheel, the TPMS
warning light will flash because the ID
signal codes for the tire pressure sensors
were not registered. In this case, stop the
vehicle and register the ID signal codes of
the tire pressure sensors following the
procedure.
When replacing tires and wheels
CAUTION
 When replacing the tires and wheels,
consult an Authorized Mazda Dealer.
Otherwise, the tire pressure sensors could
be damaged when replacing them.
 Do not install non-genuine wheels. If
wheels other than genuine ones are
installed, it may not be possible to install
the tire pressure sensors.
When replacing a tire or wheel, always
install the tire pressure sensor. The
following combinations of tires, wheels, or
tires and wheels are possible.
The tire pressure s ensor from the old
wheel is removed and it is installed to
the new wheel.
Only a tire is replaced without replacing
the tire pressure sensor and wheel.
A new tire pressure se nsor is installed to
a new wheel.
When Driving
Tire Pressure Monitoring System (TPMS)
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Rear View Monitor*
▼Rear View Monitor
The rear view monito
r provides visual
images of the rear of the vehicle when
reversing.
WA R N I N G
Always drive carefully confirming the safety
of the rear and the surrounding conditions
by looking directly with your eyes:
Reversing the vehicle by only looking at the
screen is dangerous as it may cause an
accident or a collision with an object. The
rear view monitor is only a visual assist
device when reversing the vehicle. The
images on the screen may be different from
the actual conditions.
CAUTION
 Do not use the rear view monitor under
the following conditions: Using the rear
view monitor under the following
conditions is dangerous and could result
in injury or vehicle damage or both.
 Icy or snow-covered roads.
 Tire chains or a temporary spare tire is
installed.
 The vehicle is on a road incline.
When the display is cold, images may
course across the monitor or the screen
and may be dimmer than usual, which
could cause difficulty in confirming the
surrounding conditions of the vehicle.
Always drive carefully confirming the
safety of the rear and the surrounding
conditions by looking directly with your
eyes.
 Do not apply excessive force to the
camera. The camera position and angle
may deviate.
 Do not disassemble, modify, or remove it
as it may no longer be waterproof.
 The camera cover is made of plastic. Do
not apply degreasing agents, organic
solvents, wax, or glass coating agents to
the camera cover. If any are spilled on
the cover, wipe
off with a soft cloth
immediately.
 Do not rub the camera cover forcefully
with an abrasive or hard brush. The
camera cover or lens may be scratched
which might affect the images.
NOTE
If water, snow, or mud is stuck on the
camera lens, wipe it off using a soft
cloth. If it cannot be wiped off, use a
mild detergent.
If the camera temperature changes
rapidly (Hot to cold, cold to hot), the
rear view monitor may not operate
correctly.
When replacing the tires, consult an
Authorized Mazda Dealer. Replacing the
tires could result in deviation of the
guide lines which appear on the display.
When Driving
Rear View Monitor
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