wheel MAZDA MODEL 3 HATCHBACK 2020 (in English) Service Manual

WA R N I N G
Do not rely completely on DAA and always
drive carefully:
The DAA detects driver fatigue and
decreased attentiveness and encourages
the driver to take a rest, however, it is not
designed to prevent the vehicle from
straying. If you rely too much on the DAA it
could lead to an accident. Drive carefully
and operate the steering wheel
appropriately.
In addition, the system may not be able to
detect driver fatigue and decreased
attentiveness correctly depending on the
traffic and driving conditions. The driver
must take sufficient rest in order to drive
safely.
NOTE
The DAA operates when all of the
following conditions are met.
The vehicle speed is about 65 to 140
km/h (41 to 86 mph).
The system detects white (yellow) lane
lines.
The system has completed learning of
the driver’s driving data after 60
minutes have passed since the driver
began driving vehicle.
The DAA does not operate under the
following conditions.
The vehicle speed is less than about
65 km/h (41 mph).
The vehicle speed exceeds about 140
km/h (86 mph)
The vehicle is making a sharp turn.
The vehicle is changing lanes.
The system cannot detect white
(yellow) lane lines.
The DAA may not operate normally
under the following conditions.
White (yellow) lane lines are less
visible because of dirt or fading/
patchiness.
The vehicle is jolted or swayed
continuously by strong winds or rough
roads.
The vehicle is driven aggressively.
When making frequent lane changes.
The vehicle is making a curve.
The DAA detects driver fatigue and
decreased attentiveness based on the
driving data when the vehicle is driven
at about 65 to 140 km/h (41 to 86 mph)
for about 20 minutes. The driving data
will be reset under the following
conditions.
The vehicle is stopped for 15 minutes
or longer.
The vehicle is driven at less than
about 65 km/h (41 mph) for about 30
minutes.
The ignition is switched off.
After the DAA has displayed the first
message encouraging rest, it does not
display the next one until 60 minutes
have passed.
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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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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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AUTOHOLD (page 4-69)
Forward Sensing Camera (FSC) (page
4-200)
Front radar sensor (page 4-204)
WA R N I N G
Do not rely completely on the MRCC with
Stop & Go function:
The MRCC with Stop & Go function system
has detection limitations depending on the
type of vehicle ahead and its conditions,
the weather conditions, and the road
conditions. Additionally, the system may be
unable to decelerate sufficiently to avoid
hitting the vehicle ahead if the vehicle
ahead applies the brakes suddenly or
another vehicle cuts into the driving lane,
which could result in an accident.
Always drive carefully and verify the
surrounding conditions and depress the
brake pedal or accelerator pedal while
keeping a safe distance from vehicles
ahead or on-coming vehicles.
Do not use the MRCC with Stop & Go
function system in the following locations.
Using the MRCC with Stop & Go function
system at the following locations may
result in an unexpected accident:
General roads other than highways
(Driving under these conditions using the
MRCC with Stop & Go function system 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 MRCC with Stop &
Go function is not possible).
 When entering and exiting interchanges,
service areas, and parking areas of
highways (If you exit a highway while
headway control is in use, the vehicle
ahead will no longer be tracked and your
vehicle may accelerate to the set speed).
 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,
your vehicle may slide while stopped by
the stop hold control, and it may
accelerate suddenly after it starts
moving.)
 Two-wheeled vehicles such as
motorcycles or bicycles are ahead.
For safety purposes, switch the MRCC with
Stop & Go function system off when it is not
being used.
Leaving the MRCC with Stop & Go function
system turned on when it is not in use is
dangerous as it could operate
unexpectedly, resulting in an accident.
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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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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).
 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.)
 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.)
 Two-wheeled vehicles such as
motorcycles or bicycles are ahead.
 (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.)
 Driving under bad weather conditions
(rain, fog, and snow).
 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.)
 Tires of a different specified size are used,
such as a temporary spare tire.
 Tires with insufficient tread are used.
 The tire pressures are not adjusted to the
specified pressure.
 The vehicle is being used to tow a
camper or boat trailer.
 Tire chains are used.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.
 Turn the system off when the vehicle is
running on a chassis roller.
 Do not modify the vehicle's suspensions.
 Always use wheels of the specified 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
Pedestrians
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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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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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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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