overheating MAZDA MODEL 3 HATCHBACK 2021 Owners Manual

Floor Mat
▼Floor Mat
We recommend the use of Genuine
Mazda
floor mats.
WARNING
Make sure the
floor mats are hooked
on the retention pins to prevent them
from bunching up under the foot
pedals:
Using a floor mat that is not secured is
dangerous as it will interfere with the
accelerator and brake pedal operation,
which could result in an accident.
Do not install two floor mats, one on
top of the other, on the driver's side:
Installing two floor mats, one on top of
the other, on the driver's side is
dangerous as the retention pins can
only keep one floor mat from sliding
forward.
Loose floor mat(s) will interfere with
the foot pedals and could result in an
accident.
If using an all-weather mat for winter
use always remove the original floor
mat.
When setting a floor mat, position the
fl oor mat so that its grommets are
inserted over the pointed end of the
retention posts.
Rocking the Vehicle
▼ Rocking the Vehicle
WARNING
Do not spin the wheels at more than
56 km/h (35 mph), and do not allow
anyone to stand behind a wheel when
pushing the vehicle:
When the vehicle is stuck, spinning the
wheels at high speed is dangerous. The
spinning tire could overheat and
explode. This could cause serious
injuries.
CAUTION
Too much rocking may cause engine
overheating , transmission failure, and
tire damage.
If you must rock the vehicle to free it
from snow, sand or mud, depress the
accelerator slightly and slowly move
the shift lever/selector lever from 1 (D)
to R position.
Before Driving
Driving Tips
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▼Engine Coolant Temperature
Gauge
Displays the engine coolant
temperature. The blue range of the
gauge indicates that the engine coolant
temperature is low, and the red range
of the gauge indicates that the engine
coolant temperature is high and
overheating.

CAUTION
When the engine coolant temperature
gauge needle is in the red range, the
engine coolant temperature is
extremely high. Drive slowly to reduce
engine load. If the engine coolant
temperature gauge needle is in the red
range, there is the possibility of
overheating. Park the vehicle in a safe
place immediately and take
appropriate measures.
Refer to Overheating on page 7-21.
NOTE
If the engine or engine coolant
temperature is high or low, the
engine output may be restricted to
protect the engine.
▼Fuel Gauge
The fuel gauge shows approximately
how much fuel is remaining in the tank
when the ignition is switched ON. We
recommend keeping the tank over 1/4
full.

1. Full
2. 1/4 Full
3. Empty

When Driving
Instrument Cluster and Display
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Driving Tips
▼Driving Tips
WARNING
Do not let the vehicle move in a
direction opposite to the direction
selected by the selector lever:
Do not let the vehicle move backward
with the selector lever in a forward
position, or do not let the vehicle
move forward with the selector lever in
the reverse position. Otherwise, the
engine may stop, causing the loss of
the power brake and power steering
functions, and make it diffi
cult to
control the vehicle which could result
in an accident.
Pa s s i n g
For extra power when passing another
vehicle or climbing steep grades,
depress the accelerator fully. The
transmission will shift to a lower gear,
depending on vehicle speed.
NOTE
The accelerator pedal may initially
feel heavy as it is being depressed,
then feel lighter as it is depressed
further. This change in pedal force
aids the engine control system in
determining how much the
accelerator pedal has been
depressed for performing kickdown,
and functions to control whether or
not kickdown should be performed.
While the selector lever is in the M
position and the DSC is turned o ff,
manual shift mode does not switch
to automatic shift mode even if the
accelerator pedal is completely
depressed. Operate the selector
lever.
Climbing steep grades from a stop
To climb a steep grade from a stopped
position:
1. Depress the brake pedal.
2. Shift to D or M1, depending on the
load weight and grade steepness.
3. Release the brake pedal while
gradually accelerating.
Descending steep grades
When descending a steep grade, shift
to lower gears, depending on load
weight and grade steepness. Descend
slowly, using the brakes only
occasionally to prevent them from
overheating.
When Driving
Automatic Transmission
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▼Gate operator/Canadian
Programming
Canadian radio-frequency laws require
transmitter signals to “time-out” (or
quit) after several seconds of
transmission ― which may not be long
enough for HomeLink
to pick up the
signal during programming. Similar to
this Canadian law, some U.S. gate
operators are designed to “time-out”
in the same manner.

If you live in Canada or are having
di fficulties programming a gate
operator by using the programming
procedures (regardless of where you
live), replace Step 3 of Programming
the HomeLink System with the
following:
NOTE
If programming a garage door opener
or gate operator, it is advised to unplug
the device during the “cycling” process
to prevent possible overheating.
While the indicator light is flashing in
amber, press the button on the
hand-held transmitter for 2 seconds
and release it repeatedly until the
indicator light changes from amber to
green.
Go back to Step 4 of Programming the
HomeLink System to complete the
procedure.
▼ Operating the HomeLink System
Press the programmed HomeLink
button to operate a programmed
device.
▼
Reprogramming the HomeLink
system
To program a device to HomeLink
using a HomeLink button previously
trained, follow these steps:
1. Press and hold the desired
HomeLink button. DO NOT release
the button.
2. After 20 seconds, the indicator light
fl ashes in amber. After the indicator
light flashes, release the HomeLink
button.
3. Go back to Step 2 of Programming the HomeLink System to complete
the procedure.
NOTE
If the programming has not been
completed, the system returns to the
previous programming.
▼Erasing Programmed HomeLink
Buttons
NOTE
All of the programmed HomeLink
buttons are reset. Individual buttons
cannot be reset, however, individual
buttons can be reprogrammed. For
individual button reprogramming,
refer to Reprogramming the
HomeLink System (page 4-63).
Verify that the programming has
been erased if you resell the vehicle.
When Driving
Switches and Controls
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i-ACTIV AWD Operation*
▼i-ACTIV AWD Operation
AWD provides excellent drivability on
snow-covered and ice-packed roads,
sand and mud, as well as on steep
slopes and other slippery surfaces.
A system malfunction or operation
conditions are indicated by a warning.
Refer to AWD Wa
rning Indication/
Warning Light on page 7-31.
WARNING
Never spin a wheel that is o ff the
ground:
Spinning a wheel that is o ff the ground
as a result of the vehicle being stuck or
in a ditch is dangerous. The drive
assembly could be seriously damaged
which could lead to an accident or
could even lead to overheating, oil
leakage, and a fire.
▼AWD Driving
This vehicle has not been designed for
the purpose of o
ff-road driving or
rallies. Do not attempt to drive over
uneven or rocky surfaces, or across
rivers.
Although this vehicle is equipped with
AWD, acceleration, steering and
braking operations should be
conducted in the same manner as with
a non-AWD vehicle, with the emphasis
placed on safe driving.
▼ Tires and Tire Chains
The condition of the tires plays a large
role in the performance of the vehicle.
Moreover, to prevent adverse eff
ects to
the drive assembly, please note the
following:
Tires
When replacing tires, always replace
all front and rear tires at the same
time.
All tires must be of the same size,
manufacture, brand and tread
pattern. Pay particular attention
when equipping snow or other types
of winter tires.
Do not mix tread-worn tires with
normal tires.
Inspect tire inflation pressures at the
speci fied periods adjust to the
speci fied pressures.
NOTE
Check the tire
inflation pressure label
attached to driver's door frame for the
correct tire inflation pressure.
Make sure to equip the vehicle with
genuine tires of the speci
fied size, on
all wheels. With AWD, the system is
calibrated for all 4 wheels being of
the same dimensions.
Tire chains
Install tire chains to the front tires.Do not use tire chains on the rear
wheels.
Do not drive the vehicle faster than
30 km/h (19 mph) with the tire
chains installed.
Do not drive the vehicle with tire
chains on road conditions other than
snow or ice.
▼ To w i n g
If the vehicle requires towing, have it
towed with all 4 wheels completely
off
the ground.
Refer to Towing Description on page
7-23.
When Driving
i-ACTIV AWD
*Some models.4-83
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▼Cooling (With A/C switch)
1. Press the switch.
2. Set the temperature control dial to the cold position.
3. Set the fan control dial to the desired speed.
4. Turn on the air conditioner by pressing the A/C switch.
5. After cooling begins, adjust the fan control dial and temperature
control dial as needed to maintain
maximum comfort.
CAUTION
If the air conditioner is used while
driving up long hills or in heavy tra ffic,
monitor the high engine coolant
temperature warning indication to see
if it is displayed (page 7-29).
The air conditioner may cause engine
overheating. If the warning indication
is displayed, turn the air conditioner
o ff (page 7-21).
NOTE
When maximum cooling is desired,
set the temperature control dial to
the extreme cold position and set
the air intake selector to the
recirculated air position, then turn
the fan control dial fully clockwise.
If warmer air is desired at floor level,
press the
switch and adjust the
temperature control dial to maintain
maximum comfort.
The air to the floor is warmer than air
to the face (except when the
temperature control dial is set at the
extreme hot or cold position).
▼ Ve n t i l a t i o n
1. Press the switch.
2. Set the air intake selector to the outside air position (indicator light
turns off ).
3. Set the temperature control dial to the desired position.
4. Set the fan control dial to the desired speed.
▼Windshield Defrosting and
Defogging
1. Press the switch.
2. Set the temperature control dial to the desired position.
3. Set the fan control dial to the desired speed.
4. If dehumidi fied heating is desired,
turn on the air conditioner.
WARNING
Do not defog the windshield using the
switch with the temperature
control set to the cold position:
Using the
switch with the
temperature control set to the cold
position is dangerous as it will cause
the outside of the windshield to fog
up. Your vision will be hampered,
which could lead to a serious accident.
Set the temperature control to the hot
or warm position when using the
switch.
NOTE
(With A/C switch)
Fogging on the windows clears up
more easily while the air conditioner
is on, but they will fog up more easily
if the air conditioner is turned o ff.
Interior Features
Climate Control System
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7If Trouble Arises
Helpful information on what to do if a problem arises with the
vehicle.
Parking in an Emergency............ 7-2 Parking in an Emergency......... 7-2
Flat Tire................................... 7-3 Spare Tire and Tool Storage ..........
............................................ 7-3
Changing a Flat Tire................7-7
Battery Runs Out..................... 7-17 Jump-Starting...................... 7-17
Emergency Starting................. 7-20 Starting a Flooded Engine..... 7-20
Push-Starting....................... 7-20
Overheating........................... 7-21 Overheating........................ 7-21
Emergency Towing.................. 7-23 Towing Description.............. 7-23
Tiedown Hooks
*.................. 7-24
Warning/Indicator Lights and
Warning Sounds..................... 7-27If a Warning Light Turns On or
Flashes................................ 7-27
Message Indicated on Multi-
information Display............. 7-39
Warning Sound is
Activated.............................7-42
When Liftgate/Trunk Lid Cannot be
Opened................................. 7-48 When Liftgate/Trunk Lid Cannot
be Opened..........................7-48
Active Driving Display Does Not
Operate................................. 7-50 If the Active Driving Display Does
Not Operate
*....................... 7-50
Windshield Wipers Operate at High
Speed.................................... 7-51 Windshield Wipers Operate at
High Speed......................... 7-51
*Some models.7-1
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Overheating
▼Overheating
If the engine coolant temperature
gauge indicates overheating and the
high engine coolant temperature
warning indication is displayed, the
vehicle loses power or you hear a loud
knocking or pinging noise, the engine
is probably too hot.
WARNING
Pull over to a safe location, then
switch the ignition o ff and make sure
the fan is not running before
attempting to work near the cooling
fan:
Working near the cooling fan when it is
running is dangerous. The fan could
continue running indefinitely even if
the engine has stopped and the engine
compartment temperature is high. You
could be hit by the fan and seriously
injured.
Do not remove either
cooling system cap when the engine
and radiator are hot:
When the engine and radiator are hot,
scalding coolant and steam may shoot
out under pressure and cause serious
injury.
Open the hood ONLY after steam is
no longer escaping from the engine:
Steam from an overheated engine is
dangerous. The escaping steam could
seriously burn you.
If the engine coolant temperature
gauge indicates overheating and the
high engine coolant temperature
warning indication is displayed:

1. Drive safely to the side of the road and park off the right-of-way.
2. Put a vehicle with an automatic transmission in park (P), a manual
transmission in neutral.
3. Apply the parking brake.
4. Turn off the air conditioner.
5. Check whether coolant or steam is escaping from the engine
compartment.

If steam is coming from the engine
compartment:
Do not go near the front of the
vehicle. Stop the engine.
Wait until the steam dissipates,
then open the hood and start the
engine.

If neither coolant nor steam is
escaping:
Open the hood and idle the engine
until it cools.
CAUTION
If the cooling fan does not operate
while the engine is running, the
engine temperature will increase.
Stop the engine and call an
Authorized Mazda Dealer.
If Trouble Arises
Overheating
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6. Make sure the cooling fan isoperating, then turn o ff the engine
after the temperature has
decreased.
7. When cool, check the coolant level. If it is low, look for coolant leaks
from the radiator and hoses.

If you find a leak or other damage, or
if coolant is still leaking:
Stop the engine and call an Authorized
Mazda Dealer.
SKYACTIV -G 2.0 and SKYACTIV -G
2.5
1. Cooling system cap
2. Cooling fan
3. Coolant reservoir

SKYACTIV -G 2.5T
1. Coolant reservoir
2. Cooling fan
3. Cooling system cap

If you
find no problems, the engine is
cool, and no leaks are obvious:
Carefully add coolant as required
(page 6-20).
CAUTION
If the engine continues to overheat or
frequently overheats, have the cooling
system inspected. The engine could be
seriously damaged unless repairs are
made. Consult an Authorized Mazda
Dealer.
If Trouble Arises
Overheating
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3. Inspect the engine oil level (page6-19). If it's low, add the
appropriate amount of engine oil
while being careful not to over fill.
CAUTION
Do not run the engine if the oil
level is low. Otherwise, it could
result in extensive engine damage.
4. Start the engine and check the warning light.

If the light remains illuminated even
though the oil level is normal or after
adding oil, stop the engine
immediately and have your vehicle
towed to an Authorized Mazda Dealer.
▼ High Engine Coolant Temperature
War n in g I nd ic at ion
Displays if the engine coolant
temperature has increased excessively.
“Elevated Engine Coolant Temp. Drive
Slowly” displayed
Drive slowly to reduce engine load
until you can
find a safe place to stop
the vehicle and wait for the engine to
cool down.
“Excessive Engine Coolant Temp. Stop
the Vehicle in a Safe Location”
displayed
This indicates the possibility of
overheating. Park the vehicle in a safe
place immediately and stop the
engine.
Refer to Overheating on page 7-21.
CAUTION
Do not drive the vehicle with the high
engine coolant temperature warning
light illuminated. Otherwise, it could
result in damage to the engine.
▼ Power Steering Malfunction
Indication/Indicator Light
The message is displayed if the electric
power steering has a malfunction.
If the message is displayed, stop the
vehicle in a safe place and do not
operate the steering wheel. There is no
problem if the indication turns o
ff
when the engine is restarted after
some time has passed. If the indication
displays even after the engine is
restarted, contact an Authorized
Mazda Dealer if the message is
displayed continuously.
NOTE
If the message is displayed, the
power steering will not operate
normally. In this case, the steering
wheel can still be operated,
however, the operation may feel
heavy compared to normal, or the
steering wheel could vibrate when
turning.
Repeatedly jerking the steering
wheel left and right while the vehicle
is stopped or moving extremely
slowly will cause the power steering
system to go into protective mode
which will make the steering feel
heavy, but this does not indicate a
problem. If this occurs, park the
vehicle safely and wait several
minutes for the system to return to
normal.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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