2015 MAZDA MODEL 3 4-DOOR radio

4–64
When Driving
Radar Sensor
Radar Sensor
Your vehicle is equipped with a radar sensor.
The following systems also use the radar sensor.
 y Mazda Radar Cruise Control (MRCC) y Forward Obstruction Warning (FOW)
The radar sensor functions by detecting the radio waves refl ected off a vehicle ahead or an
obstruction sent from the radar sensor.
The radar sensor is mounted behind the front emblem.
Radar Sensor
If the Forward Obstruction Warning (FOW) 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 7-24 .
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4–66
When Driving
Radar Sensor
NOTE
 y In the following cases, the radar sensor may not be able to detect vehic\
les ahead or
obstructions.
 y The rear surface of a vehicle ahead does not refl ect 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.
 y Vehicles ahead with low vehicle height and thus less area for refl ecting radio waves. y Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its
tires and onto your windshield.
 y The trunk/luggage compartment is loaded with heavy objects or the rear passenger
seats are occupied.
 y Ice, snow, or soiling is on the front surface of the front emblem. y During inclement weather such as rain, snow, or sand storms. y When driving near facilities or objects emitting strong radio waves.
 y In the following cases, the radar sensor may detect vehicles in the oppo\
site lane or
surrounding obstructions, or it may not be able to detect vehicles ahead or \
obstructions.
 y The beginning and end of a curve. y Roads with continuous curves. y Narrow lane roads due to road construction or lane closures. y The vehicle ahead enters the radar sensor's blind spot. y The vehicle ahead is running abnormally due to accident or vehicle damag\
e.  y Roads with repeated up and down slopes y Driving on poor roads or unpaved roads. y The distance between your vehicle and the vehicle ahead is extremely short. y A vehicle suddenly comes close such as by cutting into the lane.
 y To prevent incorrect operation of the system, use tires of the same specifi ed size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with signifi cantly different wear patterns or tire pressures on the same vehicle. (Including
the temporary spare tire)
 y If the battery power is weak, the system may not operate correctly. y When driving on roads with little traffi c and few vehicles ahead or obstructions for the
radar sensor to detect, Forward Obstruction Warning/Smart City Brake Support (FOW/
SCBS) warning light (amber) temporarily illuminates, however, this does not indicate a
problem.
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4–10 8
When Driving
Blind Spot Monitoring (BSM) System
 y The following conditions may affect the visibility of the Blind Spot Mon\
itoring (BSM)
warning lights on the outside mirror, making it diffi cult to confi rm the illumination of the
lights:
 y Ice or snow adheres to the surface of the outside mirrors. y The door window glass is tinted.
 y The radar sensors are equipped inside the rear bumper (page 4-114 ). y Have the radar sensors inspected at an Authorized Mazda Dealer if any shock is applied
to the rear bumper, even in a minor accident. If the vehicle is driven with a damaged
radar sensor, the system may not operate properly resulting in an accident.
 y For repairs or paintwork around the radar sensors, or replacement of the bumper, consult
an Authorized Mazda Dealer.
 y The radar sensors of the Blind Spot Monitoring (BSM) system may be regulated under
the radio wave related laws of the country where the vehicle is driven. The sensors in this
system are approved for use in the U.S.A. (including territories), Canada, and Mexico\
.
If a vehicle with a Blind Spot Monitoring (BSM) system is driven in a \
country other
than the U.S.A., Canada, or Mexico, the system has to be turned off usin\
g the Blind Spot
Monitoring (BSM) OFF switch.
Blind Spot Monitoring (BSM)
The Blind Spot Monitoring (BSM) system monitors the detection areas on\
both sides of
the vehicle to the rear and when there are vehicles in the detection are\
a it notifi es the driver
by illuminating the Blind Spot Monitoring (BSM) warning light while th\
e vehicle speed is
about 10 km/h (6.2 mph) or faster and driving forward.
If the turn signal lever is operated to the side the Blind Spot Monitori\
ng (BSM) warning
light is illuminated, the Blind Spot Monitoring (BSM) warning light fl\
ashes and the system
warns the driver of the vehicle in the detection area using a BSM warnin\
g beep sound.
Detection areas
Your vehicle
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*Some models.5–16
Interior Features
Audio System
Antenna
Antenna (4-Door)
AM/FM Radio Antenna
The AM/FM radio antenna receives both
AM and FM signals.
The antenna is embedded 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


*Some models.5–17
Interior Features
Audio System
(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
WARNING
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
 y 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.
 y 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.
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5–18
Interior Features
Audio System
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 refl ect.
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.
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5–19
Interior Features
Audio System
Multipath noise
Since FM signals can be refl ected by
obstructions, it is possible to receive both
the direct signal and the refl ected signal
at the same time. This causes a slight
delay in reception and may be heard as a
broken sound or a distortion. This problem
may also be encountered when in close
proximity to the transmitter.
Reflected wave
Direct
Flutter/Skip noise
Signals from an FM transmitter move in
straight lines and become weak in valleys
between tall buildings, mountains, and
other obstacles. When a vehicle passes
through such an area, the reception
conditions may change suddenly, resulting
in annoying noise.
Weak signal noise
In suburban areas, broadcast signals
become weak because of distance from the
transmitter. Reception in such fringe areas
is characterized by sound breakup.
Strong signal noise
This occurs very close to a transmitter
tower. The broadcast signals are extremely
strong, so the result is noise and sound
breakup at the radio receiver.
Station drift noise
When a vehicle reaches the area of two
strong stations broadcasting at similar
frequencies, the original station may be
temporarily lost and the second station
picked up. At this time there will be some
noise from this disturbance.
Station 2
88.3 MHz
Station 1
88.1 MHz
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5–24
Interior Features
Audio System
Operating Tips for USB device
This unit plays audio fi les as follows:
Extension Playback with this unit
.mp3 MP3
.wma WMA .aac AAC
.m4a
.wav
*1
.ogg *1 OGG
*1 Type B
CAUTION
Do not use an audio fi le extension on
fi les other than audio fi les. In addition,
do not change the audio fi le extension.
Otherwise, the unit will not recognize
the fi le correctly resulting in noise or a
malfunction.
NOTE
 y Playback may not be possible
depending on the type and condition of
the USB fl ash memory even if the audio
fi le complies with the standard above.
 y A copyright protected WMA/AAC fi le
cannot be played in this unit.
 y  The order of the music data stored in
the device may differ from the playback
order.
 y To prevent loss or damage of stored
data, we recommend that you always
back up your data.
 y If a device exceeds the maximum
electric current value of 1,000 mA,
it may not operate or recharge when
connected.
 y Do not pull out the USB device while in
the USB mode (only pull it out while in
FM/AM radio or CD mode).
 y The device will not operate if the data is
password protected.
 y MP3/WMA/AAC/OGG *1fi les written
under specifi cations other than the
indicated specifi cation may not play
normally or fi les/folder names may not
display correctly.
*1 Type B
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