2018 MAZDA MODEL 3 HATCHBACK radio

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 vehic le. Otherwise, the radio waves emitted by the
radar will be blocked causing the system to not operate normally.
When Driving
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Radar Sensor (Front)
Your vehicle is equipped with a radar sensor (front).
The following systems also use the radar sensor (front).
Distance Recognition Support System (DRSS)
Mazda Radar Cruise Control (MRCC)
Smart Brake Support (SBS)
The radar sensor (front) function s by detecting the radio waves reflected off a vehicle ahead
or an obstruction sent from the radar sensor.
The radar sensor (front) is m ounted behind the front emblem.
Radar sensor (front)
If the Smart Brake Support/Smart City Brake Support (SBS/SCBS) Warning Light (amber)
is illuminated, the area around the radar sensor may be dirty. Refer to “Warning Guidance”
in the center display (Type B audio).
Refer to If a Warning Light Turns On or Flashes on page 7-25.
CAUTION
Heed the following precautions to assure correct operation of each system.
Do not adhere stickers (includi ng transparent stickers) to the surface of the radiator grille
and front emblem in and around the radar sensor (front), and do not replace the radiator
grille and front emblem with any product that is not a genuine product designed for use
with the radar sensor (front).
 The radar sensor (front) includes a function for detecting soiling of the radar sensor's front
surface and informing the driver, however, de pending 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 radar sensor (front) clean.
 Do not install a grille guard.
 If the front part of the vehicle has been dama ged in a vehicle accident, the position of the
radar sensor (front) may have moved. Stop the system immediately and always have the
vehicle inspected at an Authorized Mazda Dealer.
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Do not use the front bumper to push other vehicles or obstructions such as when pulling
out of a parking space. Otherwise, the radar sensor (front) could be hit and its position
deviated.
 Do not remove, disassemble, or modify the radar sensor (front).
 For repairs, replacement or paint work around the radar sensor (front), consult an
Authorized Mazda Dealer.
 Do not modify the suspension. If the suspension are modified, the vehicle's posture could
change and the radar sensor (front) may not be able to correctly detect a vehicle ahead or
an obstruction.
NOTE
Under the following conditions, the radar sensor (front) 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 conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions.
The beginning and end of a curve.
Roads with continuous curves.
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.
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Radar Sensors (Rear)
Your vehicle is equipped with radar sensors (rear). The following systems also use the radar
sensors (rear).
Blind Spot Monitoring (BSM)
Rear Cross Traffic Alert (RCTA)
The radar sensors (rear) function by detecting the radio waves reflected off a vehicle
approaching from the rear or an obstruction sent from the radar sensor.
Sedan Hatchback
Radar sensors (rear)Radar sensors (rear)
The radar sensors (rear) are installed inside the rear bumper,
one each on the left and right
sides.
Always keep the surface of the rear bumper near the radar senso rs (rear) clean so that the
radar sensors (rear) operate normally. Also, do not apply items such as stickers.
Refer to Exterior Care on page 6-63.
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.
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NOTE
The detection ability of the radar sensors (rear) has limitations. In the following cases,
the detection ability may lower and the system may not operate normally.
The rear bumper near the radar sensors (rear) has become deformed.
Snow, ice or mud adheres to the radar sensors (rear) on the rear bumper.
Under bad weather conditions such as rain, snow and fog.
Under the following conditions, the radar sensors (rear) cannot detect target objects or it
may be difficult to detect them.
Stationary objects on a road or a road side such as small, two-wheeled vehicles,
bicycles, 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 radar sensors (rear) adjusted for each
vehicle to a loaded vehicle condition so that the radar sensors (rear) detect approaching
vehicles correctly. If the direction of the radar sensors (rear) has deviated for some
reason, have the vehicle inspected at an Authorized Mazda Dealer.
For repairs or replacement of the radar sensors (rear), or bumper repairs, paintwork, and
replacement near the radar sensors, consult an Authorized Mazda Dealer.
Turn off the system while pulling a trailer or while an accessory such as a bicycle carrier
is installed to the rear of th e vehicle. Otherwise, the radio waves emitted by the radar will
be blocked causing the system to not operate normally.
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.
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Antenna
▼Antenna (4-Door)
AM/FM Radio Antenna
The AM/FM radio antenna receives both
AM and FM signals.
The antenna is embe
dded into the window
glass.
CAUTION
When washing the inside of the window
which has an antenna, use a soft cloth
dampened in lukewarm water, gently
wiping the antenna lines.
Use of glass cleaning products could
damage the antenna.
Satellite Radio Antenna
*
The satellite radio antenna receives
SiriusXM signals.
Antenna
▼ Antenna (5-Door)
AM/FM Radio Antenna*
The AM/FM radio antenna receives both
AM and FM signals.
(Type A)
To remove the antenna, turn it
counterclockwise.
To install the antenna, turn it clockwise.
Make sure the antenna is securely
installed.

Remove Install
CAUTION

To prevent damage to the antenna,
remove it before entering a car wash
facility or passing beneath a low
overhead clearance.
 Be careful around the antenna when
removing snow from the roof. Otherwise
the antenna could be damaged.
NOTE
When leaving your vehicle unattended, we
recommend that you remove the antenna
and store it inside the vehicle.
Interior Features
Audio System
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(Type B)
Antenna

Antenna for AM/FM and Satellite
Radio Antenna*
The antenna for AM/FM and satellite
radio antenna receives both AM and FM
signals and SiriusXM signals.

Antenna
Operating Tips for Audio
System
WA R N I N G
Always adjust the audio while the vehicle is
stopped:
Do not adjust the audio control switches
while driving the vehicle. Adjusting the
audio while driving the vehicle is
dangerous as it could distract your
attention from the vehicle operation which
could lead to a serious accident.
Even if the audio control switches are
equipped on the steering wheel, learn to
use the switches without looking down at
them so that you can keep your maximum
attention on the road while driving the
vehicle.
CAUTION
For the purposes of safe driving, adjust the
audio volume to a level that allows you to
hear sounds outside of the vehicle
including car horns and particularly
emergency vehicle sirens.
NOTE
To prevent the battery from being
discharged, do not leave the audio
system on for a long period of time when
the engine is not running.
If a cellular phone or CB radio is used
in or near the vehicle, it could cause
noise to occur from the audio system,
however, this does not indicate that the
system has been damaged.
Interior Features
Audio System
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Do not spill any liquid on the audio
system.
Do not insert any objects, other than CDs,
into the slot.
▼Radio Reception
AM characteristics
AM signals bend around such things as
buildings or mountains and bounce off the
ionosphere.
Therefore, they can reach longer distances
than FM signals.
Because of this, two stations may
sometimes be picked up on the same
frequency at the same time.
Station 2
Station 1 Ionosphere
FM characteristics
An FM broadcast range is usually about
40―50 km (25―30 miles) from the
source. Because of extra coding needed to
break the sound into two channels, stereo
FM has even less range than monaural
(non-stereo) FM.
FM Station
40—50km
(25—30 miles)
Signals from an FM transmitter are similar
to beams of light because they do not bend
around corners, but they do reflect. Unlike
AM signals, FM signals cannot travel
beyond the horizon. Therefore, FM
stations cannot be received at the great
distances possible with AM reception.
AM wave
FM wave
FM wave
100—200 km (60—120 miles) Ionosphere
Atmospheric conditions can also affect
FM reception. High humidity will cause
poor reception. However, cloudy days may
provide better reception than clear days.
Interior Features
Audio System
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