sensor MAZDA MODEL 3 HATCHBACK 2021 Owners Manual

▼Sunlight/Temperature Sensor
The climate control system measures
inside and outside temperatures,
humidity and sunlight using the
sunlight/temperature sensor. It sets
temperatures inside the cabin
accordingly.
CAUTION
Do not obstruct both sensors,
otherwise the climate control system
will not operate properly.
Sunlight sensor
1. Sunlight sensor
Interior temperature sensor
1. Interior temperature sensor
Interior Features
Climate Control System
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Body Lubrication
▼Body Lubrication
All moving points of the body, such as
door and hood hinges and locks,
should be lubricated each time the
engine oil is changed. Use a
nonfreezing lubricant on locks during
cold weather.

Make sure the hood's secondary latch
keeps the hood from opening when
the primary latch is released.
Wiper Blades
▼Wiper Blades
CAUTION

Hot waxes applied by automatic car
washers have been known to
aff ect
the wiper's ability to clean windows.
 To prevent damage to the wiper
blades, do not use gasoline,
kerosene, paint thinner, or other
solvents on or near them.
 When the wiper lever is in the AUTO
position and the ignition is switched
ON, the wipers may move
automatically in the following cases:
 If the windshield above the rain
sensor is touched.
 If the windshield above the rain
sensor is wiped with a cloth.
 If the windshield is struck with a
hand or other object.
 If the rain sensor is struck with a
hand or other object from inside
the vehicle.
Be careful not to pinch hands or fingers as it may cause injury, or
damage the wipers. When washing
or servicing the vehicle, make sure
the wiper lever is in the OFF
position.
Maintenance and Care
Owner Maintenance
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Water Marks
Occurrence
Rain, fog , dew, and even tap water can
contain harmful minerals such as salt
and lime. If moisture containing these
minerals settles on the vehicle and
evaporates, the minerals will
concentrate and harden to form white
rings. The rings can damage your
vehicle's finish.
Prevention
It is necessary to wash and wax your
vehicle to preserve its finish according
to the instructions in this section.
These steps should be taken
immediately after you find water marks
on your vehicle's finish.
Pa i n t C h i p p i n g
Occurrence
Paint chipping occurs when gravel
thrown in the air by another vehicle's
tires hits your vehicle.
How to avoid paint chipping
Keeping a safe distance between you
and the vehicle ahead reduces the
chances of having your paint chipped
by flying gravel.
NOTE
The paint chipping zone varies with
the speed of the vehicle. For
example, when traveling at 90 km/h
(56 mph), the paint chipping zone is
50 m (164 ft).
In low temperatures a vehicle's finish
hardens. This increases the chance of
paint chipping.
Chipped paint can lead to rust
forming on your Mazda. Before this
happens, repair the damage by using
Mazda touch-up paint according to
the instructions in this section.
Failure to repair the a ffected area
could lead to serious rusting and
expensive repairs.

Follow all label and container
directions when using a chemical
cleaner or polish. Read all warnings
and cautions.
▼ Maintaining the Finish
Washing
CAUTION

Before lifting the windshield wiper
blades o ff the windshield, always
follow the procedure for moving the
windshield wiper blades. Otherwise,
a wiper blade, wiper arm, or the
hood could be damaged.
Refer to the Replacing Windshield
Wiper Blades (page 6-24) section for
the procedure on how to move the
windshield wiper blades to the
service position.
 When the ignition is switched ON
and the wiper lever is in the AUTO
position and the position, the
windshield wipers may operate
automatically in the following cases:
 The area of the windshield above
the rain sensor is touched or wiped
with a cloth.
 The windshield or the rain sensor
area in the cabin is hit.
Maintenance and Care
Appearance Care
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▼Tire Pressure Monitoring System
(TPMS) Warning Indication/
Warning Light (Flashing)
If there is a problem with the TPMS or
the voltage of a tire pressure sensor
decreases, the TPMS warning light
fl
ashes and a message is displayed on
the multi-information display. Have
your vehicle inspected by an
Authorized Mazda Dealer.
WARNING
Do not drive the vehicle at high
speeds if the TPMS warning light turns
on or fl ashes:
Driving the vehicle at high speeds
while the TPMS warning light is turned
on or fl ashing is dangerous because
the brake performance and the
steering wheel operability will be
reduced. If the vehicle is driven at high
speeds or the brakes are suddenly
applied, it could lead to an accident.
Gradually apply the brakes to lower the
vehicle's speed.
Do not ignore the TPMS warning light
when it is turned on or flashing:
Continuing to drive the vehicle while
ignoring the illumination/ flashing of
the TPMS warning light is dangerous
because a tire may burst which could
lead to an accident. Take appropriate
measures as soon as possible.
▼ KEY Warning Indication/Warning
Light (Red)
“Keyless Entry System Malfunction.
Have the Vehicle Inspected” is
displayed
This message is displayed if the
advanced keyless entry & push button
start system has a problem.
Contact an Authorized Mazda Dealer.
CAUTION
If the message is indicated, or the push
button start indicator light (amber)
fl
ashes, the engine may not start. If the
engine cannot be started, try starting it
using the emergency operation for
starting the engine, and have the
vehicle inspected at an Authorized
Mazda Dealer as soon as possible.
Refer to Emergency Operation for
Starting the Engine on page 4-9.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Seat Belt Warning Indication/
Warning Light (Front seat)
The seat belt warning light turns on if
the driver or front passenger's seat is
occupied and the seat belt is not
fastened with the ignition switched
ON.
If the driver or front passenger's seat
belt is unfastened (only when the front
passenger's seat is occupied) and if the
vehicle is driven at about 20 km/h (12
mph) or faster, or about 10 km/h (6
mph) or faster for a continuous 30
seconds, with the seat belt unfastened,
the warning light
flashes for a certain
period. After a short time, the warning
light stops flashing, but remains
illuminated.
NOTE
The warning light flashes for about 6
seconds if the driver or front
passenger's seat is not fastened
when the ignition is switched ON.
(Except Mexico)
Placing heavy items on the front
passenger's seat may cause the front
passenger's seat belt warning
function to operate depending on
the weight of the item.
To allow the front passenger
occupant classi fication sensor to
function properly, do not place and
sit on an additional seat cushion on
the front passenger's seat. The
sensor may not function properly
because the additional seat cushion
could cause sensor interference.
If a small child is seated on the front
passenger's seat, the warning light
may not operate.
Action to be taken
Fasten the seat belts.
▼ Seat Belt Warning Light (Rear seat)
(Red)
If the rear seat belts are not fastened
while the ignition is switched ON , the
driver and the passenger are alerted by
the warning light.
The warning light operates even if there
is no passenger on the rear seat.
NOTE
If a rear seat belt is not fastened by a
certain period of time after the engine
has been started, the warning light
turns off
.
Action to be taken
Fasten the seat belts.
▼ Low Washer Fluid Level Warning
Indication/Warning Light*
This warning light indicates that little
washer
fluid remains.
Action to be taken
Add washer fluid (page 6-22).
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Warning Sound isActivated
▼Lights-On Reminder
The lights-on reminder is operable
when the time setting*1 of the auto
headlight o ff function is o ff.
If the ignition is switched OFF with the
exterior lights turned on and the
driver’s door is opened, a sound is
activated.
Operate the headlight switch to turn
o ff the exterior lights.
*1 If the light switch is left on, the
auto headlight o ff function
automatically turns o ff the lights
about 30 seconds after switching
the ignition off. The time setting
can be changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
NOTE
When the ignition is switched to
ACC, the “Ignition Not Switched OFF
(STOP) Warning Beep” (page 7-43)
overrides the lights-on reminder.
A personalized function is available
to change the sound volume for the
lights-on reminder.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
▼ Seat Belt Warning Beep
Front seat
Except Mexico
If the driver's seat belt is not fastened
when the ignition is switched ON, a
beep sound will be heard for about 6
seconds. If the driver or the front
passenger's seat belt is not fastened
and if the vehicle is driven at about 20
km/h (12 mph) or faster, or about 10
km/h (6 mph) or faster for a
continuous 30 seconds, with the seat
belt unfastened, a sound is activated
continuously for a certain period.
Until a seat belt is fastened or a given
period of time has elapsed, the beep
sound will not stop even if the vehicle
speed falls below 20 km/h (12 mph).
NOTE
To allow the front passenger
occupant
classification sensor to
function properly, do not place and
sit on an additional seat cushion on
the front passenger's seat. The
sensor may not function properly
because the additional seat cushion
could cause sensor interference.
If a small child is seated on the front
passenger's seat, the warning beep
may not operate.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Mexico
If the vehicle speed exceeds about 20
km/h (12 mph) with the driver or front
passenger's seat belt unfastened, a
warning beep sounds continuously. If
the seat belt remains unfastened, the
beep sound stops once and then
continues for about 90 seconds. The
beep stops after the driver or front
passenger's seat belt is fastened.
Until a seat belt is fastened or a given
period of time has elapsed, the beep
sound will not stop even if the vehicle
speed falls below 20 km/h (12 mph).
NOTE
Placing heavy items on the front
passenger's seat may cause the front
passenger's seat belt warning
function to operate depending on
the weight of the item.
To allow the front passenger seat
weight sensor to function properly,
do not place and sit on an additional
seat cushion on the front passenger's
seat. The sensor may not function
properly because the additional seat
cushion could cause sensor
interference.
If a small child is seated on the front
passenger's seat, the warning beep
may not operate.
Rear seat
The warning beep only sounds if a seat
belt is unfastened after being fastened.
▼ Ignition Not Switched O
ff (STOP)
Warning Beep
If the driver's door is opened with the
ignition switched to ACC, a beep will
be heard continuously in the cabin to
notify the driver that the ignition has
not been switched OFF (STOP). Under
this condition, the keyless entry system
will not operate, the vehicle cannot be
locked, and the battery voltage will be
depleted.
▼ Key Removed from Vehicle
Warning Beep
Vehicles with advanced keyless
function
If the key is taken out of the vehicle
while the ignition is switched to ACC
or ON, and all the doors are closed, a
sound is activated 6 times outside of
the vehicle and a sound is activated 1
time in the vehicle.
Vehicles without advanced keyless
function
If the key is taken out of the vehicle
while the ignition is switched to ACC
or ON, and all the doors are closed, a
sound is activated 1 time in the
vehicle.
NOTE
Make sure that you leave the vehicle
while carrying the key, or switch the
ignition OFF.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Touch Sensor Inoperable Warning
Beep (With the advanced keyless
function)
A warning beep is activated to notify
the driver that the doors are not locked
when all of the following conditions
are met:
The ignition is switched OFF.All the doors and liftgate are not fully
closed.
The lock is operated 3 times within 5
seconds.
Check the ignition and whether the
doors and liftgate are open or closed,
and then operate the lock again.
▼ Liftgate Door-lock Switch
Inoperable Warning Beep*
When the door-lock switch on the
liftgate is pressed under any of the
following conditions, a warning sound
is activated.
The ignition is switched to a position
other than OFF.
Any door is open.
Make sure that none of the above
conditions are present, and then press
the door-lock switch again.
▼ Key Left-in-luggage
Compartment/Trunk Warning
Beep (With the advanced keyless
function)
If the key is left in the luggage
compartment/trunk with all the doors
locked and the liftgate/trunk lid
closed, a beep will be heard outside
for about 10 seconds to notify the
driver that the key is in the luggage
compartment/trunk. In this case, take
out the key by pressing the electric
liftgate/trunk lid opener and opening
the liftgate/trunk lid. The key taken out
of the luggage compartment/trunk
may not operate because its functions
have been temporarily stopped. To
restore the key's functions, perform
the applicable procedure (page 3-8).
▼Key Left-in-vehicle Warning Beep
(With the advanced keyless
function)
If all the doors and luggage
compartment/trunk are locked using
another key while the key is left in the
cabin, the beep wh
ich sounds outside
of the vehicle will be heard for about
10 seconds to notify the driver that the
key is in the cabin. In this case, take
out the key by opening the door. A key
taken out of the vehicle using this
method may not operate because its
functions have been temporarily
stopped. To restore the key's functions,
perform the applicable procedure
(page 3-8).
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Low Fuel Warning Beep
When the low fuel warning light
fl
ashes, a warning beep is activated
once at the same time.
▼ Brake Override Warning Beep
A warning beep is activated when the
accelerator pedal and brake pedal are
depressed at the same time while
driving. Only depress the brake pedal.
▼Shift Position Warning Beep
A sound is activated when the push
button start is pressed while the
selector lever is in a position other
than P, and the ignition is switched to
ACC. Check the selector lever
position.
▼Electric Parking Brake (EPB)
War n in g Be ep
The warning buzzer is activated under
the following conditions:
The vehicle is driven with the parking
brake applied.
The Electric Parking Brake (EPB)
switch is pulled while the vehicle is
driven.
You attempt to start driving the
vehicle while the conditions for
releasing the Electric Parking Brake
(EPB) automatically have not been
met.
▼
AUTOHOLD Warning Beep
Warning light
flashes/message is
displayed and beep sound is activated
simultaneously for about 5 seconds
when using AUTOHOLD function or
when AUTOHOLD switch is operated.
Because a problem with AUTOHOLD
function has occurred, AUTOHOLD
function does not operate even if
AUTOHOLD switch is operated.

If the warning light flashes/message is
displayed and the beep sound is
activated simultaneously, have your
vehicle inspected at an Authorized
Mazda Dealer.
▼ Vehicle Problem Warning Beep
If any of the following problems occur,
a warning beep is activated. Check the
information regarding the warning
indication in the instrument cluster or
on the center display.
Automatic transmission problemIncrease in automatic transmission
internal temperature
Brake
fluid amount decreaseEngine oil level sensor problemElectric Parking Brake (EPB) problemEngine hydraulic pressure decreaseEngine coolant temperature increaseEngine system problem
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Front Radar Sensor System
Customer Information and Reporting Safety Defects
Declaration of Conformity
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