2020 MAZDA MODEL 3 HATCHBACK steering

WA R N I N G
Do not rely completely on the DM and
always drive carefully:
The DM is a system which detects driver
fatigue and sleepiness, and encourages the
driver to take a rest. This is not designed to
prevent driver fatigue and sleepiness, and
over-reliance on the system could lead to
an accident. Drive carefully and turn the
steering wheel appropriately.
In addition, the system may not be able to
detect driver fatigue and sleepiness
correctly depending on the traffic and
driving conditions. The driver must take
sufficient rest in order to drive safely.
Operation conditions
The DM begins monitoring after 20
minutes have passed since the driver
began driving the vehicle and when the
vehicle speed is about 5 km/h (3 mph) or
faster.
NOTE
If the vehicle speed decreases to less
than about 5 km/h (3 mph) while the DM
is monitoring, the DM stops monitoring
for 6 minutes even if the vehicle speed
returns to about 5 km/h (3 mph) or
faster.
If the driver monitoring camera does not
recognize the driver correctly, the DM
may not monitor correctly.
Refer to Driver Monitoring Camera on
page 4-211.
After the DM has displayed the first
message encouraging the driver to take
a rest, it does not display it again during
the following periods.
After displaying the warning pattern
(caution), the next warning pattern
(caution) is not displayed until 45
minutes have passed.
After displaying the warning pattern
(warning), the next warning pattern
(warning) is not displayed until 15
minutes have passed.
After displaying the warning pattern
(warning), the next warning pattern
(caution) is not displayed until 45
minutes have passed.
▼ Driver Monitoring (DM) Display
When the Driver Monitoring (DM) detects
driver fatigue or sleep
iness, it activates the
warning sound and displays an alert in the
instrument cluster.
Warning pattern (caution) (white)
1. “Time for a Break” message is displayed

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Traffic Jam Assist (TJA)*
▼Traffic Jam Assist (TJA)
The TJA is a system which consists of a
headway control function and a steering
assist function for reducing driver fatigue
during traffic jams when driving on
expressways or highways.
This system performs
headway control to
maintain a constant distance between your
vehicle and a vehicle ahead at a preset
vehicle speed without you having to use
the accelerator or brake pedal. Even
further, with the steering assist function,
when vehicle lane lines are detected, the
function assists the driver in keeping the
vehicle within the lan e 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.
WA R N I N G
Do not rely completely on TJA:
 The TJA is not an automated driving
system. In addition, the functions have
limitations. Do not rely completely on the
system and always stay on course using
the steering wheel.
 Set a vehicle speed within the speed limit
according to the road conditions and the
weather conditions.
The TJA may not be able to detect a
vehicle ahead depending on the type of
vehicle ahead and its conditions, the
weather conditions, and the road
conditions. Additionally, the system
might be unable to decelerate sufficiently
if a vehicle ahead applies the brakes
suddenly, another vehicle cuts into the
driving lane, or the difference in vehicle
speed between your vehicle and the
vehicle ahead is larger, which could
result in an accident. Check the
surrounding conditions and always drive
carefully while keeping a safe distance
from vehicles ahead and on-coming
vehicles.

For the purposes of safety, switch the TJA
off when it is not being used.
Leaving the TJA turned on when it is not in
use is dangerous as it could operate
unexpectedly, resulting in an accident.

Do not use the TJA under the following
conditions. Otherwise, it may result in an
accident.
 General roads other than expressways or
highways (Driving under these
conditions using the TJA is not possible.)
 Roads with sharp curves and where
vehicle traffic is heavy with insufficient
space between vehicles, or roads where
frequent and repetitive acceleration and
deceleration occur (Driving under these
conditions using the TJA is not possible).
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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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▼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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Steering assist function
The steering assist function operates when all of the following conditions are met.
Your vehicle is moving and less than about 56 km/h (35 mph).
White (yellow) lane lines on both sides are detected and you ar e driving near the center of
the lane, or your vehicle detects a vehicle ahead.
The steering wheel is not turned sharply.
The turn signal lever is not operated.
The headway control function is operating.
(Manual transmission vehicle)
The vehicle speed is about 30 km/h (19 mph) or faster.
NOTE
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, th e 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 T JA display indication is
displayed on the mu lti-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, th e TJA standby indication
(white) changes to the TJA set indication (green).
3. The headway control is operable when all of the conditions fo r it to operate are met, or
the steering assist function is o perable when all of the conditions for it to operate are
met.
NOTE
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.
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.
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.
When the TJA is operating, the Lane-keep Assist System (LAS), Distance & Speed Alert
(DSA), and Smart Brake Support (SBS) also turns on automatically.
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 functi on (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 accelerat es and when the RES
switch is pressed down (SET-), it decelerates.
Press and release immediately: 1 km/h (1 mph)
Press and hold: 10 km/h (5 mph)
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In the following cases, the TJA cancel indication is displayed and a sound is activated one
time.
The DSC has operated.
The Smart Brake Support (SBS) has operated.
The vehicle is driven on a downslope for a long time.
There is a problem with the system.
The front radar sensor cannot detect target objects (during rai n, fog, snow or other
inclement weather conditions, or when the radiator grille is dirty).
The parking brake is applied.
Any of the doors is opened.
The driver's seat belt is unfastened.
The operation frequency of the braking by the TJA control is hi gh.
(Automatic transmission vehicle)
The parking brake is automatical ly applied during stop hold control.
(Manual transmission vehicle)
The vehicle speed decreases below 25 km/h (15 mph).
The shift lever is in the neutral position for a certain period of time.
The clutch pedal is depressed for a certain period of time.
The engine has stalled.

Steering assist function
If any of the fo llowing conditions occurs, the steering assist function is temporarily
canceled.
The headway control function is canceled.
White (yellow) lane lines cannot be detected or a vehicle ahead cannot be recognized.
Your vehicle speed is more than about 64 km/h (40 mph).
The accelerator pedal is operated.
The turn signal lever is operated.
The vehicle is making a sharp curve.
The width of a lane is excessively narrow or wide.
The vehicle crosses a lane line.
The driver takes his/her hands off the steering wheel.
The steering wheel is operated abruptly.
There is a problem with the system.
The temperature in the Forward Sensing Camera (FSC) is high or low.
The windshield around the Forward Sensing Camera (FSC) is foggy .
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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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