MAZDA MODEL 3 5-DOOR 2018 Owners Manual

Radar Sensors (Rear)
Your vehicle is equipped with radar sensors (rear). The following systems also use the radar
sensors (rear).
Blind Spot Monitoring (BSM)
Rear Cross Traffic Alert (RCTA)
The radar sensors (rear) function by detecting the radio waves reflected off a vehicle
approaching from the rear or an obstruction sent from the radar sensor.
Sedan Hatchback
Radar sensors (rear)Radar sensors (rear)
The radar sensors (rear) are installed inside the rear bumper,
one each on the left and right
sides.
Always keep the surface of the rear bumper near the radar senso rs (rear) clean so that the
radar sensors (rear) operate normally. Also, do not apply items such as stickers.
Refer to Exterior Care on page 6-63.
CAUTION
If the rear bumper receives a severe impact, the system may no longer operate normally. Stop
the system immediately and have the vehicle inspected at an Authorized Mazda Dealer.
When Driving
i-ACTIVSENSE
4-139
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

NOTE
The detection ability of the radar sensors (rear) has limitations. In the following cases,
the detection ability may lower and the system may not operate normally.
The rear bumper near the radar sensors (rear) has become deformed.
Snow, ice or mud adheres to the radar sensors (rear) on the rear bumper.
Under bad weather conditions such as rain, snow and fog.
Under the following conditions, the radar sensors (rear) cannot detect target objects or it
may be difficult to detect them.
Stationary objects on a road or a road side such as small, two-wheeled vehicles,
bicycles, pedestrians, animals, and shopping carts.
Vehicle shapes which do not reflect radar waves well such as empty trailers with a low
vehicle height and sports cars.
Vehicles are shipped with the direction of the radar sensors (rear) adjusted for each
vehicle to a loaded vehicle condition so that the radar sensors (rear) detect approaching
vehicles correctly. If the direction of the radar sensors (rear) has deviated for some
reason, have the vehicle inspected at an Authorized Mazda Dealer.
For repairs or replacement of the radar sensors (rear), or bumper repairs, paintwork, and
replacement near the radar sensors, consult an Authorized Mazda Dealer.
Turn off the system while pulling a trailer or while an accessory such as a bicycle carrier
is installed to the rear of th e vehicle. Otherwise, the radio waves emitted by the radar will
be blocked causing the system to not operate normally.
The radar sensors are regulated by the relevant radio wave laws of the country in which
the vehicle is driven. If the vehicle is driven abroad, authorization from the country in
which the vehicle is driven may be required.
When Driving
i-ACTIVSENSE
4-140
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

Cruise Control*
With cruise control, you can set and automatically maintain any speed of more than about
25 km/h (16 mph).
WA R N I N G
Do not use the cruise control under the following conditions:
Using the cruise control under the following cond itions is dangerous and could result in loss of
vehicle control.
 Hilly terrain
 Steep inclines
 Heavy or unsteady
traffic
 Slippery or winding roads
 Similar restrictions that require inconsistent speed
▼ Cruise Control Switch
ON switch RES/+ switch
SET- switch
OFF/CAN
switch
When Driving
Cruise Control
*Some models.4-141
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

NOTE
If your Mazda has the following steering switch, your Mazda is equipped with the Mazda
Radar Cruise Control (MRCC) system.
Refer to Mazda Radar Cruise Control (MRCC) on page 4-102.
CANCEL switchRES switch
OFF switch
switch switchMODE switch
SET- switch
SET+ switch
▼
Cruise Main Indication (White),
Cruise Set Indication (white)/
Indicator Light (Green)
Cruise main indication (white)
The cruise main indication (white) is
displayed in the instrument cluster when
the cruise control system is activated.
Cruise set indication (white)/indicator
light (green)
The cruise set indication (white) is
displayed in the instrument cluster and the
cruise set indicator light (green) turns on
when a cruising sp
eed has been set.
▼Activation/Deactivation
To activate the system, press the ON
switch. The cruise main indication (white)
is displayed.
To deactivate the system, press the
OFF/CAN switch.
The cruise main indication (white) turns
off.
WA R N I N G
Always turn off the cruise control system
when it is not in use:
Leaving the cruise control system in an
activation-ready state while the cruise
control is not in use is dangerous as the
cruise control could unexpectedly activate
if the activation button is accidentally
pressed, and result in loss of vehicle control
and an accident.
When Driving
Cruise Control
4-142
Mazda3_8GE4-EA-17F_Edition1
2017-4-7 11:59:21

NOTE
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 cruise control
system operable, the system will be
operable when the ignition is switched ON
the next time.
▼To Set Speed
1. Activate the cruise control system by
pressing the ON switch. The cruise
main indication (wh ite) is displayed.
2. Accelerate to the desired speed, which must be more than 25 km/h (16 mph).
3. Set the cruise control by pressing the SET
switch at the desired speed. The
cruise control is set at the moment the
SET
switch is pressed. Release the
accelerator pedal simultaneously. The
cruise set indication (white) is
displayed and the cruise set indicator
light (green) turns on.
NOTE
The cruise control speed setting cannot
be performed under the following
conditions:
(Automatic transaxle)
The selector lever is in the P or N
position.
(Manual transaxle)
The shift lever is in the neutral
position.
The parking brake is applied.
Release the SET or RES/ switch at
the desired speed, otherwise the speed
will continue increasing while the RES/
switch is pressed and held, and
continue decreasing while the SET
switch is pressed and held (except when
the accelerator pedal is depressed).
On a steep grade, the vehicle may
momentarily slow down while
ascending, or speed up while
descending.
The cruise control will cancel if the
vehicle speed decreases below 21 km/h
(13 mph) when climbing a steep grade.
The cruise control may cancel at about
15 km/h (9 mph) below the preset speed
such as when climbing a long, steep
grade.
▼ To Increase Cruising Speed
Follow either of these procedures.
To increase speed using cruise control
switch
Press the RES/ switch and hold it. Your
vehicle will accelerate. Release the switch
at the desired speed.

Press the RES/
switch and release it
immediately to adjust the preset speed.
Multiple operations will increase the
preset speed according to the number of
times it is operated.
Increasing speed with a single RES/
switch operation
Instrument cluster display for vehicle
speed indicated in km/h: 1 km/h (0.6 mph)
Instrument cluster display for vehicle
speed indicated in mph: 1 mph (1.6 km/h)
When Driving
Cruise Control
4-143
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

To increase speed using accelerator
pedal
Depress the accelerator pedal to accelerate
to the desired speed. Press the SET
switch and release it immediately.
NOTE
Accelerate if you want to speed up
temporarily when the cruise control is on.
Greater speed will not interfere with or
change the set speed. Take your foot off
the accelerator to return to the set speed.
▼To Decrease Cruising Speed
Press the SET switch and hold it. The
vehicle will gradually slow.
Release the switch at the desired speed.

Press the SET
switch and release it
immediately to adjust the preset speed.
Multiple operations will decrease the
preset speed according to the number of
times it is operated.
Decreasing speed with a single SET
switch operation
Instrument cluster display for vehicle
speed indicated in km/h: 1 km/h (0.6 mph)
Instrument cluster display for vehicle
speed indicated in mph: 1 mph (1.6 km/h)
▼ To Resume Cruising Speed at More
Than 25 km/h (16 mph)
If the cruise control system temporarily
canceled (such as applying the brake
pedal) and the system is still activated, the
most recent set speed will automatically
resume when the RES/
switch is pressed.
If vehicle speed is below 25 km/h (16
mph), increase the vehicle speed up to 25
km/h (16 mph) or more and press the RES/
switch.
▼ To Temporarily Cancel
To temporarily cancel the system, use one
of these methods:
Slightly depress the brake pedal.
(Manual transaxle)
Depress the clutch pedal.
Press the OFF/CAN switch.
If the RES/
switch is pressed when the
vehicle speed is 25 km/h (16 mph) or
higher, the system reverts to the previously
set speed.
NOTE
If any of the following conditions occur,
the cruise control system is temporarily
canceled.
The parking brake is applied.
(Automatic transaxle)
The selector lever is in the P or N
position.
(Manual transaxle)
The shift lever is in the neutral
position.
When the cruise control system is
temporarily canceled by even one of the
applicable cancel conditions, the speed
cannot be re-set.
When Driving
Cruise Control
4-144
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

(Automatic transaxle)
The cruise control cannot be cancelled
while driving in manual mode (selector
lever shifted from D to M position).
Therefore, engine braking will not be
applied even if the transaxle is shifted
down to a lower gear. If deceleration is
required, lower the set speed or depress
the brake pedal.
▼To Deactivate
When a cruising speed has been set
(cruise set indication (white) is
displayed/cruise set indicator light
(green) turns on)
Long-press the OFF/CAN switch or press
the OFF/CAN switch 2 times.
When a cruising speed has not been set
(cruise main indication (white) is
displayed)
Press the OFF/CAN switch.
When Driving
Cruise Control
4-145
Mazda3_8GE4-EA-17F_Edition1
2017-4-7 11:59:21

Tire Pressure Monitoring System*
The Tire Pressure Monitoring System (TPMS) monitors the air pressure of all four tires. If
the air pressure of one or more tires is too low, the system warns the driver b y indicating the
tire pressure monitoring system warning light in the instrument cluster and operating a beep
sound. The system monitors the tire pressures indirectly using the data sent from the ABS
wheel speed sensors.
To allow the system to operate c orrectly, the system needs to be initialized with the specified
tire pressure (value on the tire pressure label). Follow the pr ocedure and perform the
initialization.
Refer to Tire Pressure Monitorin g System Initialization on page 4-148.
The warning light flashes when the system has a malfunction.
Refer to Warning Lights on page 4-24.

ABS wheel speed sensor
When Driving
Tire Pressure Monitoring System
4-146*Some models.
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

CAUTION
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle has tires of a
different size than the
size indicated on the vehicle placard or tire in flation pressure label, you should determine
the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring
system ( TPMS) that illuminates a low tire pressu re telltale when one or more of your tires is
significantly
under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as soon as possible, and inflate them to the proper
pressure. Driving on a significantly under-infla ted tire causes the tire to overheat and can
lead to tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitu te for proper tire maintenance, and it is the
driver's responsibility to maintain correct tire pressure, even if under-inflation has not
reached the level to trigger illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when
the system is not operating properly.
The TPMS malfunction indicator is combined wi th the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for approximately one minute and then
remain continuously illuminate d. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists. When the malfunction indicator is illuminated,
the system may not be able to detect or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons, including the installation of replacement
or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly.
Always check the TPMS malfunction telltale after replacing one or more tires or wheels on
your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to
continue to function properly.
 To avoid false readings, the system samples for a little while before indicating a problem. As
a result it will not instantane ously register a rapid tire
deflation or blow out.
NOTE
Because this system detects slight changes in tire conditions, the timing of the warning may
be faster or slower in the following cases:
The size, manufacturer, or the type of
tires is different from the specification.
The size, manufacturer, or the type of a tire is different from the others, or the level of tire
wear is excessively different between them.
A run-flat tire, studless tire, snow tire, or tire chains are used.
When Driving
Tire Pressure Monitoring System
4-147
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21

An emergency tire is used (The tire pressure monitoring system warning light may flash
and then continue illuminating).
A tire is repaired using the emergency flat tire repair kit.
The tire pressure is excessively higher than the specified pressure, or the tire pressure is
suddenly lowered for some reason such as a tire burst during driving.
The vehicle speed is lower than about 15 km/h (9.3 mph) (including when the vehicle is
stopped), or the drive period is shorter than 5 minutes.
The vehicle is driven on an extremely rough road or a slippery, icy road.
Hard steering and rapid acceleration/decelera tion are repeated such as during aggressive
driving on a winding road.
Load on the vehicle is applied to a tire such as by loading heavy luggage to one side of
the vehicle.
System initialization has not been implem ented with the specified tire pressure.
▼Tire Pressure Monitoring System
Initialization
In the following cases, system
initialization must be
performed so that the
system operates normally.
A tire pressure is adjusted.
Tire rotation is performed.
A tire or wheel is replaced.
The battery is repl aced or completely
drained.
The tire pressure monitoring system
warning light is illuminated.

Initialization method
1. Park the car in a sa fe place and firmly
apply the parking brake.
2. Let the tires cool, then adjust the tire pressure of all four (4) tires to the
specified pressure indicated on the tire
pressure label located on the driver's
door frame (door open).
Refer to Tires on page 9-10.
3. Switch the ignition ON.
4. Press and hold the tire pressure monitoring system set switch and
verify that the tire pressure monitoring
system warning light in the instrument
cluster flashes twice and a beep sound
is heard once.
When Driving
Tire Pressure Monitoring System
4-148
Mazda3_8GE4-EA-17F_Edition1 2017-4-7 11:59:21