2021 MAZDA MODEL 3 HATCHBACK battery

The BSM will not operate under the
following circumstances.
The vehicle speed falls below
about 10 km/h (6.3 mph) even
though the i-ACTIVSENSE warning
indication/warning light is turned
off.
The shift lever (manual
transmission)/selector lever
(automatic transmission) is shifted
to reverse (R) and the vehicle is
reversing.
The turning radius is small (making
a sharp turn, turning at
intersections).
In the following cases, the
i-ACTIVSENSE warning indication/
warning light turns on and operation
of the system is stopped. If the
i-ACTIVSENSE warning indication/
warning light remains illuminated,
have the vehicle inspected at an
Authorized Mazda Dealer as soon as
possible.
Some problem with the system
including the BSM warning
indicator lights is detected.
A large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
There is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
Remove any snow, ice or mud on
the rear bumper.
Driving on snow-covered roads for
long periods.
The temperature near the rear side
radar sensor becomes extremely
hot due to driving for long periods
on slopes during the summer.
The battery voltage has decreased.Under the following conditions, the
rear side radar sensor cannot detect
target objects or it may be di fficult to
detect them.
The rear bumper around the rear
side radar sensor is deformed.
Radio wave interference from a
radar sensor equipped on a nearby
vehicle.
The approaching vehicle is any of
the following shapes.
a) The size of the vehicle body is
extremely small.
b) The vehicle height is extremely low or high.
c) A special type of vehicle with a complex shape.
A vehicle is in the detection area at
the rear in an adjacent driving lane
but it does not approach. The BSM
determines the condition based on
radar detection data.
A vehicle is traveling alongside
your vehicle at nearly the same
speed for an extended period of
time.
Vehicles approaching in the
opposite direction.
A vehicle in an adjacent driving
lane is attempting to pass your
vehicle.
A vehicle is in an adjacent lane on
a road with extremely wide driving
lanes. The detection area of the
rear side radar sensor is set at the
road width of expressways.
In the following case, the flashing of
the BSM warning indicator light, and
the activation of the warning sound
and the warning screen indicator
display may not occur or they may be
delayed.
A vehicle makes a lane change
from a driving lane two lanes over
to an adjacent lane.
Driving on steep slopes.Crossing the summit of a hill or
mountain pass.
When Driving
i-ACTIVSENSE
4-97
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

An object that reflects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
Vehicles are stopped in the area
around your vehicle such as during
heavy tra ffic.
A vehicle approaching from the
front or side of your vehicle slows
down.
A vehicle approaching from the
front or left side of your vehicle
makes a right or left turn directly in
front of your vehicle.
A vehicle or pedestrian moves in
the parking lot or on the sidewalk
in the area surrounding your
vehicle.
After making a left or right turn, an
on-coming vehicle is present.
When passing an on-coming
vehicle.
A vehicle overtakes your vehicle
while it is stopped.
Your vehicle is in an area where
strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
Under the following conditions, the
front side radar sensor cannot detect
approaching vehicles or it might be
di fficult to detect them, and the
system may not operate normally.
The front side radar sensor
detection area is obstructed by a
nearby wall or vehicle.
Directly after the system becomes
operable.
Radio wave interference from a
radar sensor equipped on a nearby
vehicle.
The approaching vehicle has any of
the following shapes.
a) The size of the vehicle body is extremely small.
b) The vehicle height is extremely low or high.
c) A special type of vehicle with a complex shape
A vehicle suddenly enters the
detection area from the front or
side of your vehicle.
A vehicle that has stopped
suddenly starts to move.
Multiple objects move at the same
time.
The vehicle is driven in bad
weather conditions such as heavy
rain, fog , snow, or sand storms.
The vehicle is driven on a sharp
curve or on bumpy roads.
An object that re flects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
A vehicle approaches while turning
(Such as roundabout)
The vehicle is driven at an
extremely slow speed.
In the following cases, the system
turns on the i-ACTIVSENSE warning
indication/warning light and
operation of the system is stopped. If
the i-ACTIVSENSE warning
indication/warning light remains on,
have the vehicle inspected by an
Authorized Mazda Dealer as soon as
possible.
Some problem with the system has
occurred.
The front side radar sensor
installation position is greatly
deviated.
There is a large accumulation of
snow or ice on the front bumper
near a front side radar sensor.
The temperature near the radar
sensors becomes extremely hot
due to driving for a long time on
slopes during the summer.
The battery voltage has decreased.
When Driving
i-ACTIVSENSE
4-115
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

A vehicle approaching from the
rear left and right side of your
vehicle makes a right or left turn
directly in front of your vehicle.
A vehicle overtakes your vehicle
while it is stopped.
Your vehicle is in an area where
strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
In the following cases, the
i-ACTIVSENSE warning indication/
warning light turns on and operation
of the system is stopped. If the
i-ACTIVSENSE warning indication/
warning light remains illuminated,
have the vehicle inspected at an
Authorized Mazda Dealer as soon as
possible.
Some problem with the system
including the Blind Spot
Monitoring (BSM) warning
indicator lights has occurred.
A large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
There is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
Driving on snow-covered roads for
long periods.
The temperature near the radar
sensors becomes extremely hot
due to driving for long periods on
slopes during the summer.
The battery voltage has decreased.Under the following conditions, the
rear side radar sensor cannot detect
approaching vehicles or it might bedi fficult to detect them, and the
system may not operate normally.
The vehicle speed when reversing
is about 15 km/h (9 mph) or
faster.
The rear side radar sensor
detection area is obstructed by a
nearby wall or parked vehicle.
(Reverse the vehicle to a position
where the radar sensor detection
area is no longer obstructed.)
1. Your vehicle
A vehicle is approaching directly
from the rear of your vehicle.
1. Your vehicle
The vehicle is parked at an angle.
1. Your vehicle
Directly after the RCTA system
becomes operable using the
personalization feature.
Radio wave interference from a
radar sensor equipped on a nearby
parked vehicle.
When Driving
i-ACTIVSENSE
4-118
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

A large deviation in the installation
position of a rear side radar sensor
on the vehicle has occurred.
There is a large accumulation of
snow or ice on the rear bumper
near a rear side radar sensor.
Driving on snow-covered roads for
long periods.
The temperature near the radar
sensors becomes extremely hot
due to driving for long periods on
slopes during the summer.
The battery voltage has decreased.Under the following conditions, the
rear side radar sensor cannot detect
target objects or it may be difficult to
detect them.
The rear side radar sensor
detection area is obstructed by a
nearby wall or parked vehicle.
(Reverse the vehicle to a position
where the radar sensor detection
area is no longer obstructed.)
1. Your vehicle
A vehicle is approaching directly
from the rear of your vehicle.
1. Your vehicle
The vehicle is parked on a slant.
1. Your vehicle
A vehicle is approaching from the
opposite direction on a steep
gradient.
1. Your vehicle

Directly after the SBS -RC system
becomes operable using the
personalization feature.
Radio wave interference from a
radar sensor equipped on a nearby
parked vehicle.
When Driving
i-ACTIVSENSE
4-166
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

The method for parking/stopping
the vehicle using the 360°View
Monitor di ffers depending on the
road circumstances/conditions and
the vehicle conditions. When and
how much you turn the steering
wheel will di ffer depending on the
situation, , therefore always check
the vehicle surroundings directly with
your eyes while using the system.
Also, before using the system, always
make sure that the vehicle can be
parked/stopped in the parking/
stopping space.
NOTE
If there are water droplets, snow, or
mud on the camera lens, wipe it off
using a soft cloth. If the camera lens
is especially dirty, wash it off with
mild detergent.
If the camera lens is touched or there
is any dirt on it, it could a ffect the
screen image. Wipe the lens using a
soft cloth.
If the area where the camera is
installed, such as the front/rear
bumper or door mirrors, has been
damaged in a vehicle accident, the
camera (position, installation angle)
may have shifted. Always consult an
Authorized Mazda Dealer to have
the vehicle inspected.
If the camera is subjected to
excessive changes in temperature
such as by pouring hot water on the
camera during cold weather, the
360°View Monitor may not operate
normally.
If the vehicle is driven during cold
temperatures and the camera
temperature decreases, the top view
and the side view may become
u n c l ea r. H o we v e r, t h i s d o e s n o t
indicate a problem. If the vehicle is
stopped for a while and the camera
temperature increases, the top view
and the side view will return to the
normal condition.
If the battery voltage is low, the
screen might be temporarily di fficult
to view, however, this does not
indicate a problem.
The 360°View Monitor has
limitations. Objects under the
bumper or near both ends of the
bumper cannot be displayed.
Obstructions above the upper image
range of the camera are not
displayed.
Under the following conditions, the
screen might be di fficult to view,
however this does not indicate a
problem.
The temperature near the lens is
high/low.
Rainy conditions, water droplets
on the camera, or high humidity.
Mud or foreign matter near the
camera.
Extremely bright light such as
sunlight or headlights hitting the
camera lens directly.
The surroundings are illuminated
by vehicle lights, fluorescent lights,
or LED lights (display may flicker).
Extremely small dark or white dots
appear on the screen (dots may
fl icker).
Because the 360°View Monitor
camera uses a special lens, the
distance displayed on the screen
di ffers from the actual distance.
When Driving
i-ACTIVSENSE
4-171
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

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 your 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 di fferent 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
tra ffic 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 Tra
ffic Alert (FCTA)
The front side radar sensor function by
detecting the radio waves re flected o ff
a vehicle approaching from the front or
an obstruction sent from the radar
sensor.
1. Front side radar sensor

The front side radar sensors are
installed inside the front bumper, one
on each side.
Always keep the surface of the front
bumper near the front side radar
sensors clean so that they operate
normally. Also, do not apply items such
as stickers.
Refer to Exterior Care on page 6-48.
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
i-ACTIVSENSE
*Some models.4-209
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

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 de flation 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 Pressure Monitoring
System (TPMS) Warning Indication/
Warning Light (Flashing) on page
7-33.
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 tire 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.
When Driving
Tire Pressure Monitoring System (TPMS)
4-220
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Operating Tips
▼Operating Tips
Operate the climate control system
with the engine running.
To prevent the battery from being
discharged, do not leave the fan
control switch on for a long period of
time with the ignition switched ON
when the engine is not running.
Clear all obstructions such as leaves,
snow and ice from the hood and the
air inlet in the cowl grille to improve
the system e
fficiency.
Use the climate control system to
defog the windows and dehumidify
the air.
The recirculate mode should be used
when driving through tunnels or
while in a
traffic jam, or when you
would like to shut o ff outside air for
quick cooling of the interior.
Use the outside air position for
ventilation or windshield defrosting.
If the vehicle has been parked in
direct sunlight during hot weather,
open the windows to let warm air
escape, then run the climate control
system.
(With A/C switch)
Run the air conditioner about 10
minutes at least once a month to
keep internal parts lubricated.
Have the air conditioner checked
before the weather gets hot. Lack of
refrigerant may make the air
conditioner less e fficient.
The refrigerant specifications are
indicated on a label attached to the
inside of the engine compartment. If
the wrong type of refrigerant is used,
it could result in a serious
malfunction of the air conditioner.
Consult a professional, government certi fied repairer for the inspection
or repair because a special device is
required for the air conditioner
maintenance.
For details, consult an Authorized
Mazda Dealer.
1. Label
Interior Features
Climate Control System
5-2
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34