2019 MAZDA MODEL 3 HATCHBACK sensor

The direction of the arrow ()
indicates that the fuel -filler lid is on the
left side of the vehicle.
▼ Dashboard Illumination
When the lights are turned on with the
ignition switched ON, the brightness of
the dashboard illumination is dimmed.
However, when the light sensor detects
that the surrounding area is bright such as
when the lights are turned on in the
daytime, the dashboard illumination does
not dim.
NOTE
When the ignition is switched ON in the
early evening or at dusk, the dashboard
illumination is dimmed for several
seconds until the light sensor detects the
brightness of the surrounding area,
however, the dimming may cancel after
the brightness is detected.
When the lights are turned on, the
lights-on indicator light in the
instrument cluster turns on.
Refer to Headlights on page 4-43.
The brightness of the instrument panel and
dashboard illuminations can be adjusted
by pressing the dashboard illumination
switch while the dashboard illumination is
dimmed.
The brightness decreases by pressing
the - switch. If you press the - switch
while the instrument cluster is at
maximum dimness, a sound is activated
to notify you that the current dimmer
setting is at ma ximum dimness.
The brightness increases by pressing the
+ switch.

1. Bright
2. Dim
Function for canceling illumination
dimmer
The illumination dimmer can be canceled
by pressing the + switch while the
instrument cluster i s at maximum dimness
and while the ignition is switched ON. If
you press the + swit ch again while the
illumination dimmer is canceled, a sound
is activated to no tify you that it is
canceled. If the in strument cluster's
visibility is reduced due to glare from
surrounding brightness, cancel the
illumination dimmer.
NOTE
When the illumination dimmer is
canceled, the instrument cluster cannot
be dimmed even if the lights are turned
on.
When the illumination dimmer is
canceled, the screen in the center
display switches to constant display of
the daytime screen.
When Driving
Instrument Cluster and Display
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*8 If one of the following operations is done from the position while the vehicle is stopped, the daytime
running lights turn off.
Switch the light s witch to the position.
Switch the light switch to the position, and then to the position again.
Switch the light switch to the position.
When starting to drive the vehicle, the daytime running lights turn on again.
*9 When the ignition is switched from ON to ACC or OFF, the headlights remain on if the auto headlight off
function has been canceled. If the auto headlight off function is enabled, the lights turn on for the set period
using the auto headlight off function, and then they turn off.
Auto-light control
When the headlight switch is in the
position and the ignition is switched ON, the
light sensor senses the surrounding lightness or darkness and automatically turns the
headlights and other exterior lights on or off.
CAUTION
 Do not shade the light sensor by adhering a st icker or a label on the windshield. Otherwise
the light sensor will not operate correctly.
 The light sensor also works as a rain sensor for the auto-wiper control. Keep hands and
scrapers clear of the windshield when the wiper lever is in the
position and the
ignition is switched ON as fingers could be pinched or the wipers and wiper blades could be
damaged when the wipers activa te automatically. If you are going to clean the windshield,
be sure the wipers are turned off completely when it is partic
ularly tempting to leave the
engine running. This is particularly important when clearing ice and snow.
NOTE
The headlights and other exterior lights may not turn off immediately even if the
surrounding area becomes well-lit because the light sensor determines that it is night time
if the surrounding area is continuously dark for several minute s such as inside long
tunnels, traffic jams inside tunn els, or in indoor parking lots.
When Driving
Switches and Controls
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Switch Posi‐tion Wiper operation
High speed
Variable-speed intermittent wipers
Set the lever to the intermittent position
and choose the interval timing by rotating
the switch.
Rotate the switch upward (FAST
direction) to shorten the interval time of
the wiper operation, and rotate the switch
downward (SLOW direction) to lengthen
it.

1. Switch
With auto-wiper control

1. Indicator light
Switch Posi‐
tion Wiper operation
Operation while pulling up lever
Switch Posi‐
tion Wiper operation
Stop
*1Auto control
Low speed
High speed
*1 When the wiper leve
r is switched to the
position, the indicator light turns on.
Auto-wiper control
When the wiper lever is in the
position, the rain sensor senses the amount
of rainfall on the windshield and turns the
wipers on or off automatically
(off―intermittent―low speed―high
speed).

The sensitivity of the rain sensor can be
adjusted by turning the switch on the
wiper lever.
From the center position (normal), rotate
the switch upward (+ direction) for higher
sensitivity (faster response) or rotate it
downward (- direction) for less sensitivity
(slower response).

1. Switch
2. Higher sensitivity
3. Center position
4. Less sensitivity
When Driving
Switches and Controls
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CAUTION
Do not shade the rain sensor by adhering
a sticker or a label on the windshield.
Otherwise the rain sensor will not
operate correctly.
 When the wiper lever is in the
position and the ignition is switched ON,
the wipers may move automatically in
the following cases:
 If the windshield above the rain sensor
is touched or wiped with a cloth.
 If the windshield is struck with a hand
or other object from either outside or
inside the vehicle.
Keep hands and scrapers clear of the
windshield when the wi per lever is in the
position and the ignition is
switched ON as fingers could be pinched
or the wipers and wiper blades damaged
when the wipers activate automatically.
If you are going to clean the windshield,
be sure the wipers are turned off
completely (when it is most likely that the
engine is left running) this is particularly
important when clearing ice and snow.
NOTE
Switching the auto-wiper lever from the
to the position while
driving activates the windshield wipers
once, after which they operate
according to the rainfall amount.
The auto-wiper control may not operate
when the rain sensor temperature is
about
－10 °C (14 °F) or lower, or
about 85 °C (185 °F) or higher.
If the windshield is coated with water
repellent, the rain sensor may not be
able to sense the amount of rainfall
correctly and the auto-wiper control
may not operate properly.
If dirt or foreign matter (such as ice or
matter containing salt water) adheres to
the windshield above the rain sensor, or
if the windshield is iced, it could cause
the wipers to move automatically.
However, if the wi pers cannot remove
this ice, dirt or foreign matter, the
auto-wiper control will stop operation.
In this case, set th e wiper lever to the
low speed position or high speed
position for manual operation, or
remove the ice, dirt or foreign matter by
hand to restore the auto-wiper
operation.
If the auto-wiper lever is left in the
position, the wipers could
operate automatically from the effect of
strong light sources, electromagnetic
waves, or infrared light because the rain
sensor uses an optical sensor. It is
recommended that the auto-wiper lever
be switched to the
position other
than when driving the vehicle under
rainy conditions.
When Driving
Switches and Controls
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i-ACTIVSENSE*
▼i-ACTIVSENSE
i-ACTIVSENSE is a collective term
covering a series of advanced safety and
driver support systems which make use of
cameras and sensors. The systems consist
of active safety and pre-crash safety
systems.
These systems are designed to assist the
driver in safer drivi
ng by reducing the load
on the driver and helping to avert
collisions or reduce their severity.
However, because each system has its
limitations, always drive carefully and do
not rely solely on the systems.
▼ Active Safety Technology
Active Safety Technology supports safer
driving by helping the driver to recognize
potential hazards and avert accidents.
Driver awareness support systems
Nighttime visibility
Adaptive Front Lighting System
(AFS)...........................................page 4-87
High Beam Control System (HBC) ............
.....................................................page 4-88
Left/right side and rear side detection
Lane Departure Warning System
(LDWS).......................................page 4-90
Blind Spot Monitoring (BSM) ....................
.....................................................page 4-93
Road sign recognition
Traffic Sign Recognition System
(TSR)...........................................page 4-98
Inter-vehicle distance recognition
Distance & Speed Alert (DSA)...................
...................................................page 4-104
Front obstruction detection when
passing cross
Front Cross Traffic Alert (FCTA) ...............
...................................................page 4-109
Rear obstruction detection when leaving
a parking space
Rear Cross Traffic Alert (RCTA)................
...................................................page 4-112
Full-surround recognition
360°View Monitor.................... page 4-164
Driver fatigue detection
Driver Attention Alert (DAA) ....................
...................................................page 4-105
Driver Monitoring (
DM).......... page 4-107
Driver support systems
Inter-vehicle distance
Mazda Radar Cruise Control
(MRCC).................................... page 4-116
Mazda Radar Cruise Control with Stop &
Go function (MRCC with Stop & Go
function)....................................page 4-124
Lane departure
Lane-keep Assist System (LAS) .................
...................................................page 4-150
Inter-vehicle distance and lane keeping
Cruising & Traffic Support (CTS) ..............
...................................................page 4-135
When Driving
i-ACTIVSENSE
4-82*Some models.
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▼Pre-Crash Safety Technology
Pre-crash safety technology is designed to
assist the driver in averting collisions or
reducing their severity in situations where
they cannot be avoided.
Collision damage reduction
Forward driving
Smart Brake Support
(SBS)...... page 4-153
Reverse driving
Smart Brake Support [Rear]
(SBS-R).................................... page 4-156
Smart Brake Support [Rear Crossing]
(SBS-RC).................................. page 4-160
▼ Camera and Sensors
Forward Sensing Camera (FSC)
The Forward Sensing Camera (FSC)
detects lane indications and recognizes
headlights, taillights and city lights during
nighttime driving. I
n addition, it also
detects the vehicle ahead, pedestrians, or
obstructions. The following systems use
the Forward Sensing Camera (FSC).
High Beam Control system (HBC)
Lane Departure Warning System
(LDWS)
Traffic Sign Recogn ition System (TSR)
Distance & Speed Alert (DSA)
Driver Attention Alert (DAA)
Driver Monitoring (DM)
Mazda Radar Cruise Control (MRCC)
Mazda Radar Cruise Control with Stop
& Go function (MRCC with Stop & Go
function)
Lane-keep Assist System (LAS)
Cruising & Traffic Support (CTS)
Smart Brake Support (SBS)
The Forward Sensing Camera (FSC) is
installed at the top of the windshield near
the rearview mirror.
Refer to Forward Sensing Camera (FSC)
on page 4-198.
Front radar sensor
The front radar sensor detects radio waves
reflected off a vehicle ahead sent from the
radar sensor. The following systems use
the front radar sensor.
Distance & Speed Alert (DSA)
Mazda Radar Crui se Control (MRCC)
Mazda Radar Cruise Control with Stop
& Go function (MRCC with Stop & Go
function)
Cruising & Traffic Support (CTS)
Smart Brake Support (SBS)
The front radar sensor is mounted behind
the radiator grille.
Refer to Front Radar Sensor on page
4-202.
Front side radar sensor
The front side radar sensors detects radio
waves reflected off a vehicle ahead sent
from the radar sensor. The following
systems use the front side radar sensor.
Front Cross Traffic Alert (FCTA)
The front side radar sensors are installed
inside the front bumper, one on the left
side and one on the right side.
Refer to Front Side Radar Sensor on page
4-204.
When Driving
i-ACTIVSENSE
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Rear side radar sensor
The rear side radar sensors detects radio
waves reflected off a vehicle approaching
from the rear or an obstruction sent from
the radar sensors. The following systems
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 sensors are installed
inside the rear bumper, one on the left side
and one on the right side.
Refer to Rear Side R adar Sensor on page
4-206.
Rear/rear corner/rear side ultrasonic
sensor
The ultrasonic sensor detects ultrasonic
waves reflected off obstructions at the rear
sent from the ultra sonic sensors. The
following systems use the ultrasonic
sensor.
Smart Brake Support [Rear] (SBS-R)
Smart Brake Support [Rear Crossing]
(SBS-RC)
The ultrasonic sensors are mounted in the
rear bumper.
Refer to Rear/Rear corner/Rear Side
Ultrasonic Sensor on page 4-207.
Front camera/side cameras/rear view
camera
The front camera, side cameras, and rear
camera shoot images of the area
surrounding the vehicle. The 360°View
Monitor uses each camera.
Cameras are installed to the front bumper,
door mirrors, and rear bumper.
Refer to Front Camera/Side Cameras/Rear
Camera on page 4-208.
Driver monitoring camera
The driver monitoring camera detects
changes in the driver's facial features and
estimates the amount of accumulated
fatigue and sleepiness of the driver. The
following system s use the driver
monitoring camera.
Driver Monitoring (DM)
The driver monitoring camera is mounted
in the center display.
Refer to Driver Monitoring Camera on
page 4-209.
▼ i-ACTIVSENSE Status Symbol
(Warning/Risk Avoidance Support
System)
*
The driver is notified of the status of the
following systems using the
i-ACTIVSENSE status symbol (warning/
risk avoidance support system).
Lane Departure Warning System
(LDWS)
Blind Spot Monitoring (BSM)
Distance & Speed Alert (DSA)
Front Cross Traffic Alert (FCTA)
Rear Cross Traffic Alert (RCTA)
Lane-keep Assist System (LAS)
NOTE
The status of the system turned on using
the personalization feature is displayed.
When Driving
i-ACTIVSENSE
4-84*Some models.
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The detection area on this system covers
the driving lanes on both sides of the
vehicle and from the rear part of the front
doors to about 50 m (164 ft) behind the
vehicle.
1. Your vehicle
2. Detection areas
WA R N I N G
Always check the surrounding area visually
before making an actual lane change:
The system is only designed to assist you in
checking for vehicles at your rear when
making a lane change. Due to certain
limitations with the operation of this
system, the BSM warning indicator light,
the warning sound and the warning screen
indicator display may not activate or they
might be delayed even though a vehicle is
in an adjacent driving lane. Always make it
your responsibility as a driver to check the
rear.
NOTE
The BSM will operate when all of the
following conditions are met:
The ignition is switched ON.
The i-ACTIVSENSE warning
indication/warning light in the
instrument cluster is turned off.
The vehicle speed is about 10 km/h
(6.3 mph) or faster.
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.
When Driving
i-ACTIVSENSE
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