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 rain,
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 indication/warning light
(amber)
i-ACTIVSENSE warning indication/
warning light
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 indication/warning light
(amber)
i-ACTIVSENSE warning indication/
warning light
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 indication/warning light
(amber)
i-ACTIVSENSE warning indication/
warning light
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.
The Forward Sensing Camera (FSC)
recognizes pedestrians when all of the
following conditions are met:
The height of a pedestrian is about 1
to 2 meters.
An outline such as the head, both
shoulders, or the legs can be
determined.
In the following cases, the Forward
Sensing Camera (FSC) may not be able
to detect target objects correctly:
Multiple pedestrians are walking, or
there are groups of people.
When Driving
i-ACTIVSENSE
4-201
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
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.
When Driving
i-ACTIVSENSE
4-203
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
NOTE
The detection ability of the front side
radar sensor has limitations. In the
following cases, the detection ability
may lower and the system may not
operate normally.
The front bumper near the front side
radar sensor has become deformed.
Snow, ice or mud adheres to the front
side radar sensor on the front bumper.
Under bad weather conditions such as
rain, snow and fog.
Under the following conditions, the front
side radar sensor cannot detect target
objects or it may be difficult to detect
them.
Stationary objects on a road or a road
side such as small, 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 front side radar sensor adjusted
for each vehicle to a loaded vehicle
condition so that the front side radar
sensor detect approaching vehicles
correctly. If the direction of the front
side radar sensor has deviated for some
reason, have the vehicle inspected at an
Authorized Mazda Dealer.
For repairs or replacement of the front
side radar sensor, or bumper repairs,
paintwork, and replacement near the
radar sensors, consult an Authorized
Mazda Dealer.
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
4-205
Mazda3_8HE9-EA-18K_Edition32018-11-21 14:31:58
Rear Side Radar Sensor*
▼Rear Side Radar Sensor
Your vehicle is equipped with rear side
radar sensor. The following systems also
use the rear side radar sensor.
Blind Spot Monitoring (BSM)
Rear Cross Traffic Alert (RCTA)
Smart Brake Support [Rear Crossing]
(SBS-RC)
The rear side radar sensor function by
detecting the radio waves reflected off a
vehicle approaching from the rear or an
obstruction sent from the radar sensor.
4–Door
1. Rear side radar sensor
5–Door
1. Rear side radar sensor
The rear side radar sensor are installed
inside the rear bumper, one each on the
left and right sides.
Always keep the surface of the rear
bumper near the rear side radar sensor
clean so that the rear side radar sensor
operate normally. Also, do not apply items
such as stickers.
Refer to Exterior Care on page 6-43.
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.
NOTE
The detection ability of the rear side
radar sensor has limitations. In the
following cases, the detection ability
may lower and the system may not
operate normally.
The rear bumper near the rear side
radar sensor has become deformed.
Snow, ice or mud adheres to the rear
side radar sensor on the rear bumper.
Under bad weather conditions such as
rain, snow and fog.
Under the following conditions, the rear
side radar sensor cannot detect target
objects or it may be difficult to detect
them.
Stationary objects on a road or a road
side such as small, 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.
When Driving
i-ACTIVSENSE
4-206*Some models.
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
3. Grasp the support rod in the paddedarea and secure it in the support rod
hole indicated by the arrow to hold the
hood open.
1. Pad
2. Support rod
▼Closing the Hood
1. Check under the hood area to make
certain all filler caps are in place and
all loose items (e.g. tools, oil
containers, etc.) have been removed.
2. Lift the hood, grasp the padded area onthe support rod, and secure the support
rod in the clip. Ve rify that the support
rod is secured in the clip before closing
the hood.
1. Clip
3. Lower the hood slowly to a height of about 20 cm (7.9 in) above its closed
position and then let it drop.
CAUTION
When closing the hood, do not push it
excessively such as by applying your
weight. Otherwise, the hood could be
deformed.
Maintenance and Care
Owner Maintenance
6-13
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
The temporary spare tire has a tread life
of less than 5,000 km (3,000 miles). The
tread life may be shorter depending on
driving conditions.
The temporary spare tire is for limited
use, however, if the tread wear
solid-band indicator appears, replace the
tire with the same type of temporary
spare (page 6-32).
NOTE
Tires degrade over time, even when they
are not being used on the road. It is
recommended that tires generally be
replaced when they are 6 years or older.
Heat caused by hot climates or frequent
high loading conditions can accelerate the
aging process. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. The
period in which the tire was manufactured
(both week and year) is indicated by a
4-digit number.
Refer to Tire Labeling on page 8-23.
▼ Replacing a Wheel
WA R N I N G
Always use wheels of the correct size on
your vehicle:
Using a wrong-sized wheel is dangerous.
Braking and handling could be affected,
leading to loss of control and an accident.
CAUTION
A wrong-sized wheel may adversely
affect:
Tire fit
Wheel and bearing life
Ground clearance
Snow-chain clearance
Speedometer calibration
Headlight aim
Bumper height
Tire Pressure Monitoring System
NOTE
When replacing a wheel, make sure the
new one is the same as the original
factory wheel in diameter, rim width,
and offset (inset/outset).
For details, contact an Authorized
Mazda Dealer.
Proper tire balancing provides the best
riding comfort and helps reduce tread
wear. Out-of-balance tires can cause
vibration and uneven wear, such as
cupping and flat spots.
Maintenance and Care
Owner Maintenance
6-33
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
Tire Labeling
▼Tire Labeling
Federal law requires tire manufacturers to
place standardized information on the
sidewall of all tires. This information
identifies and describes the fundamental
characteristics of the tire and also provides
a tire identification number for safety
standard certification and in case of a
recall.
▼Information on Passenger Vehicle
Tires
Please refer to the sample below.
1. SAFETY WARNING
2. Passenger car tire
3. Nominal width of tire in millimeters
4. Ratio of height to width (aspect ratio)
5. Radial
6. Run-flat tire
7. Rim diameter code
8. TIN: U.S. DOT tir
e identification
number
9. Load index & speed symbol
10. Severe snow conditions
11. Tire ply composition and materials used
12. Max. load rating
13. Tread wear, traction and temperature grades
14. Max. permissible inflation pressure
P215/65R15 95H is an example of a tire
size and load index rating. Here is an
explanation of the various components of
that tire size and load index rating. Note
that the tire size and load index rating may
be different from the example.
P
Indicates a tire that may be installed on
cars, SUVs, minivans and light trucks as
designated by the Tire and Rim
Association (T&RA).
NOTE
If your tire size does not begin with a letter
this may mean it is designated by either
ETRTO (European Tire and Rim Technical
Organization) or JATMA (Japan Tire
Manufacturing Association).
215
“215” is the nominal w idth of the tire in
millimeters. This three-digit number gives
the width in millimeters of the tire from
sidewall edge to sidewall edge. In general,
the larger the number, the wider the tire.
65
“65” is the aspect ratio. This two-digit
number indicates the tire's ratio of height
to width.
R
“R” is the tire construction symbol. R
indicates “Radial ply construction”.
15
“15” is the wheel rim diameter in inches.
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
8-23
Mazda3_8HE9-EA-18K_Edition3 2018-11-21 14:31:58
Tread Wear, Traction and Temperature
Grades
Tr e a d w e a r : The tread wear grade is a
comparative rating based on the wear rate
of the tire when tested under controlled
conditions on a specified government test
course. For example, a tire graded 150
would wear one and one-half (1 1/2) times
as well on the government course as a tire
graded 100.
Traction: The traction grades, from
highest to lowest are AA, A, B, and C.
The grades represent the tire's ability to
stop on wet pavement as measured under
controlled conditi ons on specified
government test surfaces of asphalt and
concrete. A tire marked C may have poor
traction performance.
Temperature: The temperature grades are
A (the highest), B and C, representing the
tire's resistance to the generation of heat
and its ability to dissipate heat when tested
under controlled conditions on a specified
indoor laboratory test wheel.
Snow Tires
In some heavy snow areas, local
governments may require true snow tires,
those with very deeply cut tread. These
tires should only be used in pairs or placed
on all four wheels. Make sure you
purchase snow tires that are the same size
and construction type a s the other tires on
your vehicle.
SAFETY WARNING
The following safety warning appears on
the tire's sidewall.
SERIOUS INJURY MAY RESULT
FROM:
EXPLOSION OF TIRE/RIM
ASSEMBLY DUE TO IMPROPER
MOUNTING-MATCH TIRE
DIAMETER TO RIM DIAMETER;
NEVER EXCEED 40 psi (275 kPa) TO
SEAT BEADS-ONLY SPECIALLY
TRAINED PERSONS SHOULD
MOUNT TIRES.
TIRE FAILURE DUE TO
UNDER-INFLATION/
OVERLOADING/
DAMAGE-FOLLOW OWNER'S
MANUAL AND PLACARD IN
VEHICLE-FREQUENTLY CHECK
INFLATION PRESSURE AND
INSPECT FOR DAMAGE.
▼ Information on Temporary Tires
Please refer to the sample below.
1. Temporary tires
2. Nominal width of tire in millimeters
3. Ratio of height to width (aspect ratio)
4. Diagonal
5. Rim diameter code
6. Load index & speed symbol
Customer Information and Reporting Safety Defects
Tire Information (U.S.A.)
8-25
Mazda3_8HE9-EA-18K_Edition3
2018-11-21 14:31:58