2021 MAZDA MODEL 3 HATCHBACK warning

The vehicle is driven on roads with
lane lines other than white (yellow)
lines, such as an expressway.

Do not get out of the vehicle while
the stop hold control is operating.
(Automatic transmission vehicle)
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 TJA o ff, apply the parking
brake, and then shift the selector lever
to the P position.

CAUTION
Turn the system off when the vehicle is
running on a chassis roller.
Heed the following cautions so that
the TJA can operate normally.
 Turn the system o ff when the vehicle
is running on a chassis roller.
 Do not modify the vehicle's
suspensions.
 Always use wheels of the speci fied
size for the front and rear wheels.
Consult an Authorized Mazda Dealer
for tire replacement.

NOTE
The headway control does not detect
the following as physical objects.
Vehicles approaching in the
opposite direction
Pe d e s t r i a n s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 o ff 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.
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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.
▼Tra
ffic Jam Assist (TJA) Display
Indication
The TJA setting status and operation
conditions are indicated on the
multi-information display or the active
driving display.
Multi-information display (Basic
display)
1. Vehicle ahead display
2. TJA set vehicle speed

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

Active driving display
1. Vehicle ahead display
2. TJA set vehicle speed

Steering assist function display
When the steering assist function
operates, the steering assist operation
display on the display changes from
white to green.
NOTE
You can view the multi-information
display to check whether the steering
assist is performing controls in
conjunction with the traffic lane lines
or a vehicle ahead.
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 Warning Light Turns On or
Flashes on page 7-27.
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▼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 in front of you.
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NOTE
The warnings and brake control do not operate while depressing the accelerator
pedal.
The lowest possible speed which can be set on the TJA is 30 km/h (19 mph).(Automatic transmission vehicle)
The vehicle speed setting can be changed by operating the RES switch during stop
hold control.

Changing the distance between vehicles during headway control
The distance-between-vehicles can be set to 4 levels; Long, medium, short, and
extremely short distance.
The distance-between-vehicles is set to a shorter distance by pressing the CANCEL
switch down. The distance-between-vehicles is set to a longer distance by pressing
the CANCEL switch up.
Distance-between-vehicles guideline
(at 80 km/h (50 mph) vehicle speed) Indication on display
Indication on multi-information display Indication on active driving dis-
play
*1
Long (about 50 m (164 ft))
Medium (about 40 m (131 ft))
Short (about 30 m (98 ft))
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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 steering 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 canceled, it will resume operation at the previously set speed
by pressing the RES switch after all of the operation conditions have been met.
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To resume driving
After the vehicle ahead starts moving
while your vehicle is stopped under
stop hold control, press the RES switch
or depress the accelerator pedal to
cancel the stop hold control and start
driving.
NOTE
When you resume driving by pressing
the RES switch, your vehicle does not
start moving until the distance
between your vehicle and the vehicle
ahead lengthens to the specified
distance or farther.
If the TJA is temporarily canceled,
depress the accelerator pedal and
start driving the vehicle. If the TJA is
temporarily canceled, you cannot
resume driving by pressing the RES
switch when there are no vehicles in
front of your vehicle.
If the vehicle ahead starts moving
within 3 seconds after your vehicle is
stopped by the stop hold control,
headway control will continue even if
you do not resume driving your
vehicle, such as by depressing the
accelerator pedal.

Vehicle departure information
If you do not resume driving within a
few seconds after the vehicle ahead
starts moving during stop hold control,
the multi-information display
vehicle-ahead indication flashes to
urge the driver to resume driving. If you
do not resume driving after the
indicator light fl ashes, a sound is
activated to urge you to resume
driving.
Lane-keep Assist System
(LAS)
*
▼Lane-keep Assist System (LAS)
The LAS provides steering assistance to
help the driver stay within the vehicle
lane if the vehicle might be deviating.
The forward sensing camera (FSC)
detects the white lines (yellow lines) of
the vehicle lane in which the vehicle is
traveling and if the system determines
that the vehicle may deviate from its
lane, it operates the electric power
steering to assist the driver’s steering
operation. The system also alerts the
driver by displaying an alert on the
multi-information display. Use the
system when you drive the vehicle on
roads with white (yellow) lines such as
expressways and highways.
1. Forward sensing camera (FSC)
WARNING
Do not rely completely on the LAS
:
 The LAS is not an automated driving
system. In addition, the system is not
designed to compensate for a
driver’s lack of caution, and
over-reliance on the system could
lead to an accident.
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▼System Operation
When the ignition is switched ON, the
i-ACTIVSENSE status symbol (warning/
risk avoidance support system) (white)
turns on and the system goes on
standby.
NOTE
If the i-ACTIVSENSE status symbol
(warning/risk avoidance support
system) (white) does not turn on, the
system is canceled using the
i-ACTIVSENSE OFF switch or the
personalization feature.
Operation conditions
When all of the following conditions
are met, the i-ACTIVSENSE status
symbol (warning
/risk avoidance
support system) on the
multi-information display changes
from white to green and the system
becomes operational.
The vehicle speed is about 64 km/h
(40 mph) or faster.
The system detects white (yellow)
lane lines.
NOTE
When the system does not detect a
white (yellow) lane line on one side
only, the system does not operate on
the side that is not being detected.
When temporarily canceling the
system
The LAS goes on standby in the
following cases: The LAS operation is
automatically restored when the
system's operation conditions are met.
The system cannot detect white
(yellow) lane lines.
The vehicle speed is less than about
56 km/h (35 mph).
The turn signal lever is operated.The accelerator pedal is depressed
abruptly.
The TCS/DSC is operating.The DSC is turned o ff.The steering wheel is operated.The brake pedal is operated.
The function is temporarily stopped.
The LAS stops functioning in the
following cases:
The temperature in the forward
sensing camera (FSC) is too high or
too low.
The windshield around the forward
sensing camera (FSC) is foggy.
The windshield around the forward
sensing camera (FSC) is blocked by
an obstruction, causing poor forward
visibility.
Strong light (such as sunlight, or
headlights (high-beam) of
on-coming vehicles) is directed at
the forward sensing camera (FSC).
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