2021 MAZDA MODEL 3 SEDAN stop start

Antilock Brake System(ABS)
▼Antilock Brake System (ABS)
The ABS control unit continuously
monitors the speed of each wheel. If
one wheel is about to lock up, the ABS
responds by automatically releasing
and reapplying that wheel's brake.

The driver will feel a slight vibration in
the brake pedal and may hear a
chattering noise from the brake system.
This is normal ABS system operation.
Continue to depress the brake pedal
without pumping the brakes.

The warning light turns on when the
system has a malfunction.
Refer to ABS Warning Indication/
Warning Light on page 7-30.
WARNING
Do not rely on ABS as a substitute for
safe driving:
The ABS cannot compensate for unsafe
and reckless driving , excessive speed,
tailgating (following another vehicle
too closely), driving on ice and snow,
and hydroplaning (reduced tire friction
and road contact because of water on
the road surface). You can still have an
accident.
NOTE
Braking distances may be longer on
loose surfaces (snow or gravel, for
example) which usually have a hard
foundation. A vehicle with a normal
braking system may require less
distance to stop under these
conditions because the tires will
build up a wedge of surface layer
when the wheels skid.
The sound of the ABS operating may
be heard when starting the engine or
immediately after starting the
vehicle, however, it does not indicate
a malfunction.
When Driving
ABS/TCS/DSC
4-77
Mazda3_8JM2-EA
-20H_Edition1_new 2020-7-10 17:21:34

An object that reflects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
Vehicles are stopped in the area
around your vehicle such as during
heavy tra ffic.
A vehicle approaching from the
front or side of your vehicle slows
down.
A vehicle approaching from the
front or left side of your vehicle
makes a right or left turn directly in
front of your vehicle.
A vehicle or pedestrian moves in
the parking lot or on the sidewalk
in the area surrounding your
vehicle.
After making a left or right turn, an
on-coming vehicle is present.
When passing an on-coming
vehicle.
A vehicle overtakes your vehicle
while it is stopped.
Your vehicle is in an area where
strong radio waves or electrical
noise may occur such as near a
television tower or power plant.
Under the following conditions, the
front side radar sensor cannot detect
approaching vehicles or it might be
di fficult to detect them, and the
system may not operate normally.
The front side radar sensor
detection area is obstructed by a
nearby wall or vehicle.
Directly after the system becomes
operable.
Radio wave interference from a
radar sensor equipped on a nearby
vehicle.
The approaching vehicle has any of
the following shapes.
a) The size of the vehicle body is extremely small.
b) The vehicle height is extremely low or high.
c) A special type of vehicle with a complex shape
A vehicle suddenly enters the
detection area from the front or
side of your vehicle.
A vehicle that has stopped
suddenly starts to move.
Multiple objects move at the same
time.
The vehicle is driven in bad
weather conditions such as heavy
rain, fog , snow, or sand storms.
The vehicle is driven on a sharp
curve or on bumpy roads.
An object that re flects the radio
waves of the radar such as a
parked vehicle, guardrail, or wall is
directly next to your vehicle.
A vehicle approaches while turning
(Such as roundabout)
The vehicle is driven at an
extremely slow speed.
In the following cases, the system
turns on the i-ACTIVSENSE warning
indication/warning light and
operation of the system is stopped. If
the i-ACTIVSENSE warning
indication/warning light remains on,
have the vehicle inspected by an
Authorized Mazda Dealer as soon as
possible.
Some problem with the system has
occurred.
The front side radar sensor
installation position is greatly
deviated.
There is a large accumulation of
snow or ice on the front bumper
near a front side radar sensor.
The temperature near the radar
sensors becomes extremely hot
due to driving for a long time on
slopes during the summer.
The battery voltage has decreased.
When Driving
i-ACTIVSENSE
4-115
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼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
*1 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 su fficient 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.
When Driving
i-ACTIVSENSE
4-128*Some models.
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

Also refer to the following before using
the MRCC with Stop & Go function.
AUTOHOLD (page 4-71)Forward Sensing Camera (FSC) (page
4-203)
Front radar sensor (page 4-207)
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 tra ffic is heavy with
insu fficient 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.
When Driving
i-ACTIVSENSE
4-129
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼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.
When Driving
i-ACTIVSENSE
4-132
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

▼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
o
ff).
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) canno t 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

When Driving
i-ACTIVSENSE
4-133
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

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
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).
Trave l s t at u s Indication on multi-information
display Indication on active driving dis-
play
During travel at constant speed
During travel under headway
control
When Driving
i-ACTIVSENSE
4-134
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34

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.
Tu r n i n g off the system
When the MRCC switch is pressed
while the MRCC is operating, the
MRCC turns o
ff.
▼ 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.
When Driving
i-ACTIVSENSE
4-138
Mazda3_8JM2-EA -20H_Edition1_new 2020-7-10 17:21:34