radio MAZDA MODEL 3 HATCHBACK 2020 (in English) Owner's Manual

Directly after the RCTA system
becomes operable using the
personalization feature.
Radio wave interference from a radar
sensor equipped on a nearby parked
vehicle.
In the following cases, it may be difficult
to view the illumination/flashing 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.
Turn off 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 off
the system.
Refer to Rear Side Radar Sensor on
page 4-208.
▼Canceling Operation of Rear Cross
Traffic Alert (RCTA)
The RCTA can be set to inoperable.
(If only the RCT
A is turned off)
Refer to the Settings section in the
Mazda Connect Owner's Manual.
(If the RCTA is turned off by
operating the i-ACTIVSENSE switch)
Refer to i-ACTIV SENSE Switch on
page 4-87.
NOTE
If the ignition is switched OFF while you
have canceled the system using the
i-ACTIVSENSE 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
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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.
Turn 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.
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.
A bright light source such as sunlight
hits the rear camera.
The surroundings are dark.
(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
notified by the multi-information
display.
The collision warning beep sounds
intermittently while the SBS-RC brake is
operating.
When Driving
i-ACTIVSENSE
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A pedestrian is close to a separate
object.
A pedestrian is crouching, lying, or
slouching.
A pedestrian suddenly jumps into the
road right in front of the vehicle.
A pedestrian opens an umbrella, or is
carrying large baggage or articles.
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)
Traffic Jam Assist (TJA)
Smart Brake Support (SBS)
The front radar sensor functions by
detecting the radio waves reflected off 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.
When Driving
i-ACTIVSENSE
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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.
When Driving
i-ACTIVSENSE
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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 6-44.
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
4-206*Some models.
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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.
Small motorcycles, bicycles,
pedestrians, animals, shopping carts,
and stationary objects on a road or a
road side.
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
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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 6-44.
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.
Small motorcycles, bicycles,
pedestrians, animals, shopping carts,
and stationary objects on a road or a
road side.
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
4-208*Some models.
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Vehicles are shipped with the direction
of the rear side radar sensor adjusted
for each vehicle to a loaded vehicle
condition so that the rear side radar
sensor detect approaching vehicles
correctly. If the direction of the rear side
radar sensor has deviated for some
reason, have the vehicle inspected at an
Authorized Mazda Dealer.
For repairs or replacement of the rear
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.
Rear/Rear corner/Rear
Side Ultrasonic Sensor
*
▼ Rear/Rear corner/Rear Side
Ultrasonic Sensor
The ultrasonic se
nsors function by
emitting ultrasonic waves which are
reflected off obstructions at the rear and
the returning ultrasonic waves are picked
up by the ultrasonic sensors.
4–Door
1. Rear ultrasonic sensor
2. Rear corner ultrasonic sensor
3. Rear side ultrasonic sensor

5–Door
1. Rear ultrasonic sensor
2. Rear corner ultrasonic sensor
3. Rear side ultrasonic sensor

The ultrasonic sensor s are mounted in the
rear bumper.
When Driving
i-ACTIVSENSE
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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 Vehic le Status Monitor
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 7-33.
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 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.
When Driving
Tire Pressure Monitoring System (TPMS)
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