Mazda 3 Hatchback (2022 year). Manual in english — page 19

¾

When entering and exiting
interchanges, service areas, and
parking areas of expressways (If you
exit an expressway while headway
control is in use, the vehicle ahead
will no longer be tracked and your
vehicle may accelerate to the set
speed).

¾

Slippery roads such as icy or
snow-covered roads (Tires could spin
causing you to lose vehicle control,
or the stop hold control may not
operate.)

¾

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.)

¾

Two-wheeled vehicles such as
motorcycles or bicycles are ahead.

¾

(Automatic transmission vehicle)

Slopes with a steep gradient (The
vehicle ahead may not be detected
correctly, your vehicle may slip while
stopped by the stop hold control, or
it may accelerate suddenly after it
starts moving.)

¾

Driving under bad weather
conditions (rain, fog, and snow).

¾

The vehicle is driven on slippery
roads such as icy or snow-covered
roads and unpaved roads (Tires
could spin causing you to lose
vehicle control, or the stop hold
control may not operate.)

¾

Tires of a different specified size are
used, such as a temporary spare tire.

¾

Tires with insufficient tread are used.

¾

The tire pressures are not adjusted to
the specified pressure.

¾

The vehicle is being used to tow a
camper or boat trailer.

¾

Tire chains are used.

¾

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 off, 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.

¾

Turn the system off when the vehicle
is running on a chassis roller.

¾

Do not modify the vehicle's
suspensions.

¾

Always use wheels of the specified
size for the front and rear wheels.
Consult an Authorized Mazda Dealer
for tire replacement.

NOTE

x

The headway control does not detect
the following as physical objects.

x

Vehicles approaching in the
opposite direction

x

Pedestrians

x

Stationary objects (stopped
vehicles, obstructions)

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x

If a vehicle ahead is traveling at an
extremely low speed, the system may
not detect it correctly.

x

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.

x

Do not use the TJA under conditions
in which close proximity warnings
are frequently activated.

x

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.

x

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.

x

While braking by the TJA control is
operating, you might hear an
operation sound, however, this does
not indicate a problem.

x

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.

x

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.

x

The forward sensing camera (FSC)
cannot recognize the area in front
of the vehicle due to soiling or fog.

x

The white (yellow) lane lines are
less visible because of dirt or paint
flaking.

x

White (yellow) lane lines or
vehicles ahead are less visible
because of bad weather (rain, fog,
or snow).

x

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.

x

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.

x

The road surface is wet and shiny
after rain, or there are puddles on
the road.

x

Heavy luggage is loaded in the
trunk/luggage compartment or on
the rear seat causing the vehicle to
tilt.

x

A vehicle in front of your vehicle is
running near a white (yellow) lane
line making it less visible.

x

The windshield is dirty or foggy.

x

The vehicle is driven through an
intersection, a junction, or a fork in
the road.

x

While white (yellow) lane lines
cannot be detected due to road or
weather conditions.

x

The surrounding brightness
suddenly changes such as when
entering or exiting a tunnel.

x

The illumination of the headlights
is weakened because of dirt or the
optical axis is deviated at night.

x

Back-light is reflected off the road
surface or the road surface is wet
and shiny after rain.

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x

The shade of a guardrail parallel to
a white (yellow) lane line is cast on
the road.

x

The width of a lane is excessively
narrow or wide.

x

The road is excessively uneven.

x

The vehicle is shaken after hitting a
road bump.

x

There are various road markings or
division lines (lane markings) of
various shapes near an
intersection.

x

The area in front of the camera is
soiled or an object that obstructs
the field of view is installed.

x

Exhaust gas from the vehicle in
front, sand, snow, and water vapor
rising from manholes and grating,
and water splashed into the air.

x

The surroundings are dark such as
during the early evening or early
morning.

x

A vehicle ahead with a certain
taillight shape.

x

A vehicle ahead veers off course
from your vehicle's line of travel.

x

A vehicle ahead is driving
erratically.

x

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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▼

Traffic 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

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.

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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 Warning 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.

x

You are driving your vehicle at the
same speed as the vehicle ahead.

x

Directly after the TJA operates.

x

Directly after the accelerator pedal is
released.

x

Another vehicle cuts into the driving
lane in front of you.

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▼

Setting the System

Operation conditions

Headway control function

The TJA operates when all of the following conditions are met.

x

(Automatic transmission vehicle)

x

The vehicle speed is about 0 km/h (0 mph) to 145 km/h (90 mph).

x

The selector lever is in the D or M position (manual mode).

x

(Manual transmission vehicle)

x

The vehicle speed is about 30 km/h (19 mph) to 145 km/h (90 mph).

x

The shift lever is in a position other than the R or N position.

x

The clutch pedal is not depressed.

x

The TJA is operating.

x

The headway control function of the Mazda Radar Cruise Control (MRCC) or
Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go
function) is set to operable (if it was set to inoperable, set it to operable using the
personalization function).

x

The brake pedal is not depressed.

x

The parking brake is released (Electric Parking Brake (EPB) indicator light is turned
off).

x

There is no problem with the DSC.

x

All the doors are closed.

x

The driver's seat belt is fastened.

NOTE
(Automatic transmission vehicle)

x

Under the following conditions, the TJA cannot be used when the vehicle speed is
30 km/h (19 mph) or slower.

x

There is a problem with the stop hold control function.

x

There is a problem with the Electric Parking Brake (EPB).

x

The TJA may not launch directly after the engine starts.

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Steering assist function

The steering assist function operates when all of the following conditions are met.

x

Your vehicle is moving and less than about 56 km/h (35 mph).

x

White (yellow) lane lines on both sides are detected and you are driving near the
center of the lane, or your vehicle detects a vehicle ahead.

x

The steering wheel is not turned sharply.

x

The turn signal lever is not operated.

x

The headway control function is operating.

x

(Manual transmission vehicle)

The vehicle speed is about 30 km/h (19 mph) or faster.

NOTE

x

The steering assist function operates so that the vehicle remains near the center of
the driving lane, however, depending on conditions such as the road curvature,
road slope and undulations, and vehicle speed, the function might not be able to
keep the vehicle near the center of the driving lane.

Setting method

1. CANCEL switch
2. RES switch
3. TJA switch

1. Press the TJA switch.

The TJA standby indication (white) turns on. In addition, the TJA display
indication is displayed on the multi-information display at the same time.

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2. Adjust the vehicle speed to the desired setting using the accelerator pedal and

press the RES switch up (SET+) or down (SET-) to start headway control.
The set speed is indicated on the display. At the same time, the TJA standby
indication (white) changes to the TJA set indication (green).

3. The headway control is operable when all of the conditions for it to operate are

met, or the steering assist function is operable when all of the conditions for it to
operate are met.

NOTE

x

If a vehicle ahead is detected while traveling at a constant speed, the
vehicle-ahead indication is displayed and headway control is performed.
Additionally, when a vehicle ahead is no longer detected, the vehicle-ahead
indication turns off and the system switches back to travel at constant speed.

x

Headway control is not possible if the vehicle ahead is driving faster than your
vehicle's set speed. Adjust the system to the desired vehicle speed using the
accelerator pedal.

x

When the ignition is switched OFF, the system status before it was turned off is
maintained. For example, if the ignition is switched OFF with the TJA operable, the
TJA remains operational the next time the ignition is switched ON.

x

When the TJA switch is pressed while the Mazda Radar Cruise Control (MRCC) or
the Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go
function) system is operating, the TJA operates. In addition, when the MRCC
switch is pressed while the TJA is operating, the Mazda Radar Cruise Control
(MRCC) or the Mazda Radar Cruise Control with Stop & Go function (MRCC with
Stop & Go function) system operates.

Changing the set vehicle speed

(To accelerate/decelerate using the RES switch)

When the RES switch is pressed up (SET+), the vehicle accelerates and when the RES
switch is pressed down (SET-), it decelerates.

x

Press and release immediately: 1 km/h (1 mph)

x

Press and hold: 10 km/h (5 mph)

(To increase speed using accelerator pedal)

Depress the accelerator pedal and press the RES switch up (SET+) or down (SET-) at
the desired speed. If the switch is not operated, the system returns to the set speed
after you release your foot from the accelerator pedal.

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NOTE

x

The warnings and brake control do not operate while depressing the accelerator
pedal.

x

The lowest possible speed which can be set on the TJA is 30 km/h (19 mph).

x

(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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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

Extremely short (about 25 m (82
ft))

*

1

Displays a pop-up image when the CANCEL switch is operated.

NOTE

x

The distance-between-vehicles differs depending on the vehicle speed, and the
slower the vehicle speed, the shorter the distance.

x

When the ignition is switched to ACC or OFF, the set distance-between-vehicles is
taken over automatically even when the engine is started again.

The function is temporarily canceled.

Headway control function

When the following operations are performed, the headway control function is
temporarily canceled and the TJA set indication (green) changes to the TJA standby
indication (white) at the same time.

x

The CANCEL switch is pressed one time.

x

The brake pedal is depressed.

x

(Automatic transmission vehicle)

The selector lever is in the P, N, or R position.

x

(Manual transmission vehicle)

The shift lever is in the R position.

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In the following cases, the TJA cancel indication is displayed and a sound is activated
one time.

x

The DSC has operated.

x

The Smart Brake Support (SBS) has operated.

x

The vehicle is driven on a downslope for a long time.

x

There is a problem with the system.

x

The front radar sensor cannot detect target objects (during rain, fog, snow or other
inclement weather conditions, or when the radiator grille is dirty).

x

The parking brake is applied.

x

Any of the doors is opened.

x

The driver's seat belt is unfastened.

x

The operation frequency of the braking by the TJA control is high.

x

(Automatic transmission vehicle)

The parking brake is automatically applied during stop hold control.

x

(Manual transmission vehicle)

x

The vehicle speed decreases below 25 km/h (15 mph).

x

The shift lever is in the neutral position for a certain period of time.

x

The clutch pedal is depressed for a certain period of time.

x

The engine has stalled.

Steering assist function

If any of the following conditions occurs, the steering assist function is temporarily
canceled.

x

The headway control function is canceled.

x

White (yellow) lane lines cannot be detected or a vehicle ahead cannot be
recognized.

x

Your vehicle speed is more than about 64 km/h (40 mph).

x

The accelerator pedal is operated.

x

The turn signal lever is operated.

x

The vehicle is being driven on a sharp curve.

x

The width of a lane is excessively narrow or wide.

x

The vehicle crosses a lane line.

x

The driver takes his/her hands off the steering wheel.

x

The steering wheel is operated abruptly.

x

There is a problem with the system.

x

The temperature in the Forward Sensing Camera (FSC) is too high or too low.

x

The windshield around the Forward Sensing Camera (FSC) is foggy.

x

The windshield around the Forward Sensing Camera (FSC) is blocked by an
obstruction, causing poor forward visibility.

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NOTE

x

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

x

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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NOTE

x

If the set speed is not indicated on the display, the system does not operate even if
the RES switch is pressed.

x

After the operation, the steering assist operation may not operate for a period of 5
seconds at the most until the lane lines are detected or a vehicle ahead is
recognized.

Turning off

When the TJA switch is pressed while the TJA is operating, the TJA turns off.

▼

Shift-up/Shift-down Request
Display (Manual Transmission)

The shift-up or shift-down request
display might be displayed while the
TJA is operating. When this occurs, shift
gears because the gear position is not
appropriate.

Request

Indication on display

Shift up

Shift Up to a Higher Gear

Shift down

Shift Down to a Lower Gear

NOTE

x

If the gears are not shifted up even
though the shift-up request
indication is displayed, load will be
applied to the engine and the TJA
might be automatically canceled or
engine damage could occur.

x

If the gears are not shifted down
even though the shift-down request
indication is displayed, the TJA might
be automatically canceled or engine
stalling could occur.

▼

Stop Hold Control (Automatic
Transmission)

While in headway control using the
TJA, your vehicle will stop when a
vehicle ahead stops. When the vehicle
is stopped and the stop hold control
operates, the TJA indicator light turns
on.

NOTE

x

Even if the TJA is temporarily
canceled during stop hold control,
the vehicle is held in its stopped
position.

x

The parking brake is automatically
applied and the vehicle is held in its
stopped position when 10 minutes
or longer have passed since the stop
hold control operated. When this
occurs, the TJA is temporarily
canceled.

x

The brake lights turn on during stop
hold control.

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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

x

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.

x

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.

x

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 flashes, 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:

¾

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.

When Driving

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*Some models.

4-165

¾

The functions of the LAS have
limitations. Always stay on course
using the steering wheel and drive
with care.

¾

Do not use the LAS under the
following circumstances, otherwise it
may result in an accident.

¾

The vehicle is driven on slippery
roads such as icy or snow-covered
roads, and unpaved roads.

¾

Tires of a different specified size
are used, such as a temporary
spare tire.

¾

Tires with insufficient tread are
used.

¾

The tire pressures are not adjusted
to the specified pressure.

¾

The vehicle is being used to tow a
camper or boat trailer.

¾

Tire chains are used.

¾

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

CAUTION

Heed the following cautions so that
the LAS can operate normally.

¾

Do not modify the vehicle's
suspensions.

¾

Always use tires of the specified type
and size for the front and rear
wheels. Consult an Authorized
Mazda Dealer for tire replacement.

NOTE

The system may not operate normally
under the following conditions.

x

The white (yellow) lane lines are less
visible because of dirt or paint
flaking.

x

White (yellow) lane lines are less
visible because of bad weather (rain,
fog, or snow).

x

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.

x

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.

x

The surrounding brightness suddenly
changes such as when entering or
exiting a tunnel.

x

Back-light is reflected off the road
surface.

x

The road surface is wet and shiny
after rain, or there are puddles on
the road.

x

The width of a lane is excessively
narrow.

x

The vehicle is driven on roads with
tight curves.

x

Heavy luggage is loaded in the
trunk/luggage compartment or on
the rear seat causing the vehicle to
tilt.

x

The vehicle is driven through a fork in
the road or a junction.

x

The shade of a guardrail parallel to a
white (yellow) lane line is cast on the
road.

x

The illumination of the headlights is
weakened because of dirt or the
optical axis is deviated at night.

x

The road is excessively uneven.

x

The vehicle is shaken after hitting a
road bump.

x

A vehicle in front of your vehicle is
running near a white (yellow) lane
line making it less visible.

x

The windshield is dirty or foggy.

x

Strong light is directed from the front
of the vehicle (such as sunlight, or
headlights (high-beam) of
on-coming vehicles).

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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.

x

The vehicle speed is about 64 km/h
(40 mph) or faster.

x

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.

x

The system cannot detect white
(yellow) lane lines.

x

The vehicle speed is less than about
56 km/h (35 mph).

x

The turn signal lever is operated.

x

The accelerator pedal is depressed
abruptly.

x

The TCS/DSC is operating.

x

The TCS/DSC is turned off.

x

The steering wheel is operated.

x

The brake pedal is operated.

The function is temporarily stopped.

The LAS stops functioning in the
following cases:

x

The temperature in the forward
sensing camera (FSC) is too high or
too low.

x

The windshield around the forward
sensing camera (FSC) is foggy.

x

The windshield around the forward
sensing camera (FSC) is blocked by
an obstruction, causing poor forward
visibility.

x

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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