Mazda 3 Hatchback (2022 year). Manual in english — page 18

How to set the speed

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 MRCC standby
indication (white) changes to the MRCC set indication (green).

Travel status

Indication on multi-information

display

Indication on active driving dis-

play

During travel at constant speed

During travel under headway
control

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.

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

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.

How to set 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.

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Distance-between-vehicles

guideline

(at 80 km/h (50 mph) vehicle

speed)

Indication on multi-information

display

Indication on active driving dis-

play

Long (about 50 m (164 ft))

Medium (about 40 m (131 ft))

Short (about 30 m (98 ft))

Extremely short (about 25 m (82
ft))

Displays a pop-up image in the active driving display only when the driver operates the switch.

NOTE

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

When the ignition is switched to ACC or OFF and then the engine is started again,
the system automatically sets the distance-between-vehicles to the previous
setting.

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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.

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

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.

NOTE

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

Canceling the system

When the following operations are performed, the MRCC system is canceled, and
the MRCC set indication (green) switches to the MRCC standby indication (white)
at the same time.

The CANCEL switch is pressed.

The brake pedal is depressed.

The shift lever is in the reverse (R) position.

Under the following conditions, the MRCC cancel indication is displayed in the
multi-information display and a single beep sound is heard.

The DSC has operated.

The Smart Brake Support (SBS) has operated.

When traveling on a downslope for a long period of time.

There is a problem with the system.

The vehicle speed decreases to less than 25 km (16 mph).

The shift lever is shifted to neutral (N) for a certain period of time.

The clutch is depressed for a certain period of time.

The engine stalls.

The front radar sensor cannot detect target objects (during rain, 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 MRCC control is high.

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Resuming control

If the MRCC system is canceled, you can resume control at the previously set speed
by pressing the RES switch and after all of the operation conditions have been met.

NOTE

If the set speed is not indicated in the display, the control does not resume even if
the RES switch is pressed.

Turning off the system

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

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▼

Shift-up/Shift-down Request
Display

The shift-up or shift-down request
display might be displayed while the
MRCC 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

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 MRCC
might be automatically canceled or
engine damage could occur.

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

Mazda Radar Cruise

Control with Stop & Go

function (MRCC with

Stop & Go function)

(Automatic

Transmission)

▼

Mazda Radar Cruise Control with
Stop & Go function (MRCC with
Stop & Go function)

The MRCC with Stop & Go function
system is designed to maintain
headway control

with a vehicle

ahead according to your vehicle's
speed using a front radar sensor to
detect the distance to the vehicle
ahead and a preset vehicle speed
without you having to use the
accelerator or brake pedals.

1 Headway Control: Control of the

distance between your vehicle and
the vehicle ahead detected by the
Mazda Radar Cruise Control
(MRCC) system.

Additionally, if your vehicle starts
closing in on the vehicle ahead such as
if the vehicle ahead brakes suddenly, a
warning sound and a warning
indication in the display are activated
simultaneously to alert you to maintain
a sufficient distance between the
vehicles.
If the vehicle ahead stops while you are
following behind it, your vehicle will
stop and be held stopped
automatically (stop hold control), and
headway control will resume when you
resume driving the vehicle such as by
pressing the RES switch.

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*Some models.

Also refer to the following before using
the MRCC with Stop & Go function.

AUTOHOLD (page 4-82)

Forward Sensing Camera (FSC) (page
4-212)

Front radar sensor (page 4-216)

WARNING

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 in front of you, 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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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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▼

Mazda Radar Cruise Control with
Stop & Go function (MRCC with
Stop & Go function) Display
Indication

The MRCC with Stop & Go function
setting status and operation conditions
are indicated on the multi-information
display and the active driving display.

Multi-information Display (Basic
display)

1. Vehicle ahead display
2. MRCC with Stop & Go function set

vehicle speed

Multi-information Display
(i-ACTIVSENSE display)

1. Vehicle ahead display
2. MRCC with Stop & Go function set

vehicle speed

Active driving display

1. Vehicle ahead display
2. MRCC with Stop & Go function set

vehicle speed

If there is a problem with the MRCC
with Stop & Go function system, a
message is displayed on the
multi-information display. Check the
center display to verify 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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▼

Close Proximity Warning

If your vehicle rapidly closes in on the
vehicle ahead because the vehicle
ahead applies the brakes suddenly
while you are traveling in headway
control, the warning sound activates
and the brake warning is indicated in
the display. Always verify the safety of
the surrounding area and depress the
brake pedal while keeping a safe
distance from the vehicle ahead.
Additionally, keep a safe distance from
the vehicles behind you.

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 MRCC with Stop &
Go function system has been set.

Directly after the accelerator pedal is
released.

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

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▼

Setting the System

The MRCC with Stop & Go function system operates when all of the following
conditions are met.

Vehicle speed is 0 km/h (0 mph) to 145 km/h (90 mph)

The MRCC with Stop & Go function is turned on.

The brake pedal is not depressed.

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

There is no problem with the DSC.

All the doors are closed.

The driver's seat belt is fastened.

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

NOTE

In the following cases, the MRCC with Stop & Go function system is canceled
when the vehicle is traveling at 30 km/h (20 mph) or less and “Mazda Radar
Cruise Control Disabled Under 30 km/h” is displayed in the multi-information
display.

The Forward Sensing Camera (FSC) cannot detect target objects (There is
problem with the Forward Sensing Camera (FSC) or windshield is dirty).

There is a problem with the stop hold control function.

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

It may not be possible to set the MRCC with Stop & Go function system directly
after starting the engine, while the DSC operation is being checked.

Turning on the system

1. CANCEL switch
2. RES switch
3. MRCC switch

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When the MRCC switch is pressed once, the MRCC with Stop & Go function system
turns on, and the MRCC with Stop & Go function standby indication (white) turns
on and the vehicle speed and the distance between the vehicles while in headway
control can be set.

In addition, the MRCC with Stop & Go function system display indication is
displayed on the multi-information display and the active driving display at the same
time.

NOTE

If the ignition is switched off while the MRCC with Stop & Go function system is
operating, the system will be operable when the ignition is switched ON the next
time.

How to set the speed

Travel status

Indication on multi-information

display

Indication on active driving dis-

play

During travel at constant speed

During travel under headway
control

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NOTE

The lowest possible speed which can be set on the MRCC with Stop & Go
function system is 30 km/h (19 mph).

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.

How to set the distance-between-vehicles during headway control

Distance-between-vehicles

guideline

(at 80 km/h (50 mph) vehicle

speed)

Indication on multi-information

display

Indication on active driving dis-

play

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 multi-information

display

Indication on active driving dis-

play

Extremely short (about 25 m (82
ft))

Displays a pop-up image in the active driving display only when the driver operates the switch.

NOTE

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

When the ignition is switched to ACC or OFF and then the engine is started again,
the system automatically sets the distance-between-vehicles to the previous
setting.

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.

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

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

(To increase speed using accelerator pedal)

NOTE

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

The setting speed can be changed by operating the RES switch up (SET+) or down
(SET-) during stop hold control.

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Canceling the system

When the following operations are performed, the MRCC with Stop & Go function
system is canceled, and the MRCC with Stop & Go function set indication (green)
switches to the MRCC with Stop & Go function standby indication (white) at the
same time.

The CANCEL switch is pressed.

The brake pedal is depressed.

The selector lever is in the P (Park), N (Neutral), or R (Reverse) position.

Under the following conditions, the MRCC with Stop & Go function cancel
indication is displayed in the multi-information display and a single beep sound is
heard.

The DSC has operated.

The Smart Brake Support (SBS) has operated.

When traveling on a downslope for a long period of time.

There is a problem with the system.

The parking brake is automatically applied during stop hold control.

The front radar sensor cannot detect target objects (during rain, 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 MRCC with Stop & Go function
control is high.

Resuming control

If the MRCC with Stop & Go function system is canceled, you can resume control at
the previously set speed by pressing the RES switch and after all of the operation
conditions have been met.

NOTE

If the set speed is not indicated in the display, the control does not resume even if
the RES switch is pressed.

Turning off the system

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

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▼

Stop Hold Control

While in headway control using the
MRCC with Stop & Go function
system, your vehicle will stop when a
vehicle ahead stops. When the vehicle
is stopped and the stop hold control
operates, the MRCC with Stop & Go
function indicator light turns on.

NOTE

If the MRCC with Stop & Go
function system is canceled during
stop hold control, the vehicle is held
in its stopped position.

The parking brake is automatically
applied and the vehicle is held in its
stopped position when 10 minutes
have elapsed since the stop hold
control operated. At this time, the
MRCC with Stop & Go function
system is canceled.

The brake lights turn on during stop
hold control.

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
resume 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 MRCC with Stop & Go
function is temporarily canceled
during stop hold control, you cannot
resume driving by pressing the RES
switch when there are no vehicles in
front of your vehicle. Depress the
accelerator pedal and resume driving
the vehicle.

If the vehicle ahead starts moving
within 3 seconds after your vehicle is
stopped by the stop hold control,
headway control will resume even if
you do not resume driving your
vehicle, such as by depressing the
accelerator pedal.

Resume driving information

If you do not resume driving within a
few seconds after the vehicle ahead
starts moving, 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.

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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 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.

WARNING

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.)

When Driving

i-ACTIVSENSE

*Some models.

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