2021 MAZDA MODEL 3 HATCHBACK radio

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

The front side radar sensor of the
FCTA may be regulated under the
radio wave related laws of the
country where the vehicle is driven.
If this system is used abroad, it may
be necessary to turn off the system.
Refer to Front Side Radar Sensor
on page 4-209.
▼ Canceling Operation of Front
Cross Tra
ffic Alert (FCTA)
The FCTA can be set to inoperable.
(If only the FCTA is turned
off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
(If the FCTA is turned o ff by
operating the i-ACTIVSENSE OFF
switch)
Refer to i-ACTIVSENSE OFF Switch
on page 4-89.
NOTE
If the ignition is switched OFF while
you have canceled the system using the
i-ACTIVSENSE OFF switch, the system
is automatically enabled the next time
the ignition is switched ON. However,
if the system is canceled using the
personalization features, the system is
not automatically enabled.
Rear Cross Tra ffic Alert
(RCTA)
*
▼ Rear Cross Traffi
c Alert (RCTA)
The RCTA system is designed to assist
the driver in checking the area to the
rear left and right sides of your vehicle
while your vehicle is reversing by
alerting the driver to the presence of
vehicles approaching the rear of your
vehicle.
The RCTA system detects vehicles
approaching from the rear left and
right sides of your vehicle and the rear
of your vehicle while your vehicle is
being reversed out of a parking space,
and notifies the driver of possible
danger using the Blind Spot Monitoring
(BSM) warning indicator lights and the
warning buzzer.
1. Your vehicle
2. Detection areas
When Driving
i-ACTIVSENSE
4-116*Some models.
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

WARNING
Always check the surrounding area
visually before actually putting the
vehicle in reverse:
The system is only designed to assist
you in checking for vehicles at the rear
when putting the vehicle in reverse.
Due to certain limitations with the
operation of this system, the Blind Spot
Monitoring (BSM) warning indicator
lights may not flash or it might be
delayed even though a vehicle is
behind your vehicle. Always make it
your responsibility as a driver to check
the rear.
RCTA operation
1. The RCTA system operates when the shift lever (manual
transmission) or the selector lever
(automatic transmi ssion) is shifted
to the reverse (R) position.
2. If there is the possibility of a collision with an approaching
vehicle, the Blind Spot Monitoring
(BSM) warning indicator lights
flashes and the warning beep is
activated simultaneously.
Rear view monitor (vehicles with
Rear view monitor)
The RCTA warning indication in the
rearview monitor also synchronizes
with the Blind Spot Monitoring
(BSM) warning indicator light on
the door mirrors.
360°view monitor (vehicles with
360°view monitor)
The RCTA warning indication in the
360°view monitor also
synchronizes with the Blind Spot
Monitoring (BSM) warning
indicator light on the door mirrors.
Function for canceling illumination
dimmer
If the BSM warning indicator lights turn
on when the parking lights are turned
on, the brightness of the BSM warning
indicator lights is dimmed.
If the BSM warning indicator lights are
di fficult to see due to glare from
surrounding brightness when traveling
on snow-covered roads or under foggy
conditions, press the dimmer
cancellation button to cancel the
dimmer and increase the brightness of
BSM warning indicator lights when
they turn on.
Refer to Dashboard Illumination on
page 4-18.
NOTE
The system may operate under the
following conditions even if a vehicle
is not approaching.
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 approaching from the
rear left and right side of your
vehicle slows down.
When Driving
i-ACTIVSENSE
4-117
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

In the following cases, it may be
difficult to view the illumination/
fl ashing of the Blind Spot Monitoring
(BSM) warning indicator lights
equipped on the door mirrors.
Snow or ice adheres to the door
mirrors.
The front door glass is fogged or
covered in snow, frost or dirt.
Tu r n o ff the RCTA 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 rear side radar sensor of the
RCTA may be regulated under the
radio wave related laws of the
country where the vehicle is driven. If
this system is used abroad, it may be
necessary to turn o ff the system.
Refer to Rear Side Radar Sensor on
page 4-211.
▼ Canceling Operation of Rear Cross
Tra
ffic Alert (RCTA)
The RCTA can be set to inoperable.
(If only the RCTA is turned
off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
(If the RCTA is turned o ff by
operating the i-ACTIVSENSE OFF
switch)
Refer to i-ACTIVSENSE OFF Switch
on page 4-89.
NOTE
If the ignition is switched OFF while
you have canceled the system using the
i-ACTIVSENSE OFF switch, the system
is automatically enabled the next time
the ignition is switched ON. However,
if the system is canceled using the
personalization features, the system is
not automatically enabled.
When Driving
i-ACTIVSENSE
4-119
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

Tu r n off the SBS-RC 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.
In the following cases, a rear radar
and rear camera may detect
something as a target obstruction
which could cause the SBS -RC
system to operate.
There are hanging curtains, gate
poles such as at toll gates and
railroad crossing.
When traveling near objects such
as foliage, barriers, vehicles, walls,
and fences along a road.
When driving off -road in areas
where there is grass and forage.
When passing through low gates,
narrow gates, car washing
machines, and tunnels.
A trailer is connected.When a rear-mounted bike rack
(towbar bike carrier) is installed.
(Manual transmission)
If the vehicle is stopped by the
SBS- RC operation and the clutch
pedal is not depressed, the engine
stops.
When the system operates, the user
is noti fied by the multi-information
display.
The collision warning beep sounds
intermittently while the SBS -RC
brake is operating.
If the vehicle is stopped by the
SBS- RC operation and the brake
pedal is not depressed, displaying in
meter “Emergency Braking Activated.
Depress Brake Pedal to Hold Stop”,
after about 2 seconds and the
SBS- RC brake is automatically
released.
▼ Collision Warning
If there is a possibility of a collision, the
collision warning sound is activated
continuously and a warning is
displayed on the active driving display
and the multi-information display.
Multi-information display
1. “BRAKE!” message is displayed

Active driving display
1. “BRAKE!” message is displayed
When Driving
i-ACTIVSENSE
4-167
Mazda3_8JM2-EA
-20H_Edition1_new 2020-7-10 17:21:34

A pedestrian is in a dark location
such as during the night, or blends
into the background by wearing
clothes matching the background
color.Front Radar Sensor*
▼Front Radar Sensor
Your vehicle is equipped with a front
radar sensor.
The following systems also use the
front radar sensor.
Distance & Speed Alert (DSA)Mazda Radar Cruise Control
(MRCC)
Mazda Radar Cruise Control with
Stop & Go function (MRCC with
Stop & Go function)
Tra
ffic Jam Assist (TJA)Smart Brake Support (SBS)
The front radar sensor functions by
detecting the radio waves re flected o ff
a vehicle ahead or an obstruction sent
from the radar sensor.
The front radar sensor is mounted
behind the front emblem.
1. Front radar sensor

If “Safety and Driver Support Systems
Temporarily Disabled. Front Radar
Obscured. Drive Safely” is displayed on
the multi-information display of the
instrument cluster, clean the area
around the front radar sensor.
CAUTION
Heed the following precautions to
assure correct operation of each
system.
When Driving
i-ACTIVSENSE
*Some models.4-207
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34