warning light MAZDA MODEL 3 HATCHBACK 2020 (in English) Repair Manual

WA R N I N G
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 transmission)
is shifted to the reverse (R) position.
2. If there is the poss ibility 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 cancelling illumination
dimmer
If the BSM warning i ndicator lights turn
on when the parking lights are turned on,
the brightness of the BSM warning
indicator lights is dimmed.
If the BSM warning i ndicator lights are
difficult 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 reflects the radio waves
of the radar such as a parked vehicle,
guardrail, or wall is directly next to
your vehicle.
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A vehicle approaching from the rear
left and right side of your vehicle
slows down.
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 be
difficult 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

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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.
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Slippery roads such as ice or snow-bound
roads (Tires could spin causing you to
lose vehicle control, or the stop hold
control may not operate.)
 Long, descending slopes (to maintain
distance between vehicles, the system
automatically and continuously applies
the brakes which could result in the loss
of brake power.)
 Slopes with a steep gradient (The vehicle
ahead may not be detected correctly.)
 Two-wheeled vehicles such as
motorcycles or bicycles are ahead.
For safety purposes, switch the MRCC
system off when it is not being used.
Leaving the MRCC system turned on when
it is not in use is dangerous as it could
operate unexpectedly, resulting in an
accident.
CAUTION
 Turn the system
off when the vehicle is
running on a chassis roller.
 If your vehicle is towed or you are towing
something, switch the MRCC system off
to prevent an unexpected operation.
NOTE
The MRCC system does not detect the
following as physical objects.
Vehicles approaching in the opposite
direction
Pedestrians
Stationary objects (stopped vehicles,
obstructions)
If a vehicle ahead is traveling at an
extremely low speed, the system may
not detect it correctly.
If there is a structure on the road or an
object (such as a monorail) at a low
height off the ground in front of the
vehicle, the system may operate.
Therefore, do not use the MRCC.
Do not use the MRCC system under
conditions in which close proximity
warnings are frequently activated.
During headway control travel, the
system accelerates and decelerates your
vehicle in conjunction with the speed of
the vehicle ahead. However, if it is
necessary to accelerate for a lane
change or if the vehicle ahead brakes
suddenly causing you to close in on the
vehicle rapidly, accelerate using the
accelerator pedal or decelerate using
the brake pedal depending on the
conditions.
While the MRCC system is in use, it
does not cancel even if the shift lever is
operated and any intended engine
braking will not occur. If deceleration is
required, lower the vehicle speed setting
or depress the brake pedal.
While braking by the MRCC control is
operating, you might hear an operation
sound, however, this does not indicate a
problem.
The brake lights turn on while braking
by the MRCC control is operating,
however, they may not turn on while the
vehicle is on a down slope at the set
vehicle speed or traveling at a constant
speed and following a vehicle ahead.
Stop the headway control function to
switch the system to the cruise control
function.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
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▼Mazda Radar Cruise Control
(MRCC) Display Indication
The MRCC setting status and operation
conditions are indicated on the
multi-information di
splay and the active
driving display.
Multi-information display (Basic
display)
1. Vehicle ahead display
2. MRCC set vehicle speed

Multi-information display
(i-ACTIVSENSE display)
1. Vehicle ahead display
2. MRCC set vehicle speed

Active drivin g display
1. Vehicle ahead display
2. MRCC set vehicle speed

If there is a probl em with the MRCC
system, a message is displayed on the
multi-information display. Check the
center display to ve rify the problem and
then have your vehicle inspected by an
Authorized Mazda Dealer.
Refer to If a Warning Light Turns On or
Flashes on page 7-27.
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Do not get out of the vehicle while the stop
hold control is operating:
Getting out of the vehicle while the stop
hold control is operating is dangerous as
the vehicle may move unexpectedly and
result in an accident. Before getting out of
the vehicle, switch the MRCC with Stop &
Go function system off, shift the selector
lever to the P position, and apply the
parking brake.
CAUTION
If your vehicle is towed or you are towing
something, switch the MRCC with Stop &
Go function system
off to prevent an
unexpected operation.
 Turn the system off when the vehicle is
running on a chassis roller.
NOTE
The MRCC with Stop & Go function
system does not detect the following as
physical objects.
Vehicles approaching in the opposite
direction
Pedestrians
Stationary objects (stopped vehicles,
obstructions)
If a vehicle ahead is traveling at an
extremely low speed, the system may not
detect it correctly.
If there is a structure on the road or an
object (such as a monorail) at a low
height off the ground in front of the
vehicle, the system may operate.
Therefore, do not use the MRCC with
Stop & Go function.
Do not use the MRCC with Stop & Go
function system under conditions in
which close proximity warnings are
frequently activated.
During headway control travel, the
system accelerates and decelerates your
vehicle in conjunction with the speed of
the vehicle ahead. However, if it is
necessary to accelerate for a lane
change or if the vehicle ahead brakes
suddenly causing you to close in on the
vehicle rapidly, accelerate using the
accelerator pedal or decelerate using
the brake pedal depending on the
conditions.
While the MRCC with Stop & Go
function system is in use, it does not
cancel even if the selector lever is
operated and any intended engine
braking does not occur. If deceleration
is required, lower the set speed or
depress the brake pedal.
While braking by the MRCC with Stop
& Go function control is operating, you
might hear an operation sound,
however, this does not indicate a
problem.
The brake lights turn on while braking
by the MRCC with Stop & Go function
control is operating, however, they may
not turn on while the vehicle is on a
down slope at the set vehicle speed or
traveling at a constant speed and
following a vehicle ahead.
Stop the headway control function to
switch the system to the cruise control
function.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
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Stationary objects (stopped vehicles,
obstructions)
If a vehicle ahead is traveling at an
extremely low speed, the system may not
detect it correctly.
If there is a structure on the road or an
object (such as a monorail) at a low
height off the ground in front of the
vehicle, the system may operate.
Therefore, do not use the TJA.
Do not use the TJA under conditions in
which close proximity warnings are
frequently activated.
If it is necessary to accelerate for a lane
change or the vehicle ahead brakes
suddenly causing you to close in on the
vehicle rapidly, accelerate using the
accelerator pedal or decelerate using
the brake pedal depending on the
conditions.
While the TJA is in use, any intended
engine braking does not occur even if
you shift the shift lever (manual
transmission) or the selector lever
(automatic transmission). If
deceleration is required, lower the
vehicle speed setting or depress the
brake pedal.
While braking by the TJA control is
operating, you might hear an operation
sound, however, this does not indicate a
problem.
The brake lights turn on while braking
by the TJA control is operating,
however, they may not turn on while the
vehicle is on a down slope at the set
vehicle speed or traveling at a constant
speed and following a vehicle ahead.
Under the following conditions, the TJA
may not be able to detect white (yellow)
lines or vehicles ahead correctly and the
TJA may not operate normally.
The forward sensing camera (FSC)
cannot recognize the area in front of
the vehicle due to soiling or fog.
The white (yellow) lane lines are less
visible because of dirt or paint
flaking.
White (yellow) lane lines or vehicles
ahead are less visible because of bad
weather (rain, fog, or snow).
The vehicle is driven on a temporary
lane or section with a closed lane
resulting from construction where
there might be multiple white (yellow)
lane lines, or they are interrupted.
The camera picks up an obscure line,
such as a temporary line being used
for construction, or because of shade,
unmelted snow, or grooves filled with
water.
The road surface is wet and shiny
after rain, or there are puddles on the
road.
Heavy luggage is loaded in the trunk/
luggage compartment or on the rear
seat causing the vehicle to tilt.
A vehicle in front of your vehicle is
running near a white (yellow) lane
line making it less visible.
The windshield is dirty or foggy.
The vehicle is driven through an
intersection, a junction, or a fork in
the road.
While white (yellow) lane lines cannot
be detected due to road or weather
conditions.
The surrounding brightness suddenly
changes such as when entering or
exiting a tunnel.
The illumination of the headlights is
weakened because of dirt or the
optical axis is deviated at night.
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Back-light is reflected off the road
surface or the road surface is wet and
shiny after rain.
The shade of a guardrail parallel to a
white (yellow) lane line is cast on the
road.
The width of a lane is excessively
narrow or wide.
The road is excessively uneven.
The vehicle is shaken after hitting a
road bump.
There are various road markings or
division lines (lane markings) of
various shapes near an intersection.
The area in front of the camera is
soiled or an object that obstructs the
field of view is installed.
Exhaust gas from the vehicle in front,
sand, snow, and water vapor rising
from manholes and grating, and water
splashed into the air.
The surroundings are dark such as
during the early evening or early
morning.
A vehicle ahead with a certain
taillight shape.
A vehicle ahead veers off course from
your vehicle's line of travel.
A vehicle ahead is driving erratically.
The vehicle is driven on roads with
tight curves.

Headway control function
If a vehicle ahead is detected while
traveling at a constant speed, the
vehicle-ahead indication is displayed and
headway control is performed.

Steering assist function
When lane lines are detected, the function
assists the driver in keeping the vehicle
within the lane lines. If lane lines are not
detected, the function provides the driver
driving assistance in keeping the vehicle
along the motion path with the vehicle
ahead.
NOTE
Steering assist limit warning
If the steering assist function cannot keep
the vehicle within the lane lines while the
steering assist function is operating, a
warning sound is activated and a warning
is displayed on the multi-information
display to urge the driver to operate the
steering wheel.
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Inactive
Active (vehicle ahead)
Active (lane line)
If there is a problem with the TJA, a
message is displayed on the
multi-information display. Check the
details of the problem on the center
display and then have your vehicle
inspected by an Authorized Mazda Dealer.
Refer to If a Warnin g Light Turns On or
Flashes on page 7-27.
▼ Close Proximity Warning
If your vehicle rapidly closes in on the
vehicle ahead while you are traveling
under headway control, the warning sound
is activated and the brake warning is
indicated on the display. Keep a safe
distance between your vehicle and a
vehicle ahead.
1. “Depress Brake Pedal” message is
displayed
NOTE
In the following cases, the warnings and
brakes may not operate even if your
vehicle starts closing in on the vehicle
ahead.
You are driving your vehicle at the same
speed as the vehicle ahead.
Directly after the TJA operates.
Directly after the accelerator pedal is
released.
Another vehicle cuts into the driving
lane.
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The windshield around the Forward Sensing Camera (FSC) is blocked by an obstruction,
causing poor forward visibility.

NOTE
If you take your hands off the steering wheel (not holding the steering wheel), the warning
sound is activated and an alert is indicated on the multi-information display and the active
driving display.
Multi-information display
Active driving display
If the steering wheel is held lightly, or depending on the road conditions, the system
determines that you have released the steeri ng wheel (not holding the steering wheel) even if
you are holding it, and an alert is indicated on the multi-information display and the active
driving display.

To resume operation
If the TJA is temporarily cancele d, it will resume operation at the previously set speed by
pressing the RES switch after all of the operation conditions h ave been met.
NOTE
If the set speed is not indicated on the display, the system does not operate even if the RES
switch is pressed.
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