2019 MAZDA MODEL 3 HATCHBACK engine overheat

Floor Mat
▼Floor Mat
We recommend the use of Genuine
Mazda floor mats.
WA R N I N G
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
floor mat so that its g rommets are inserted
over the pointed end of the retention posts.
Rocking the Vehicle
▼ Rocking the Vehicle
WA R N I N G
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 gauge indicates that the engine
coolant temperature is low, and the red
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 7-20.
NOTE
If the engine or engine coolant
temperature is high or low, the engine
output may be restricted to protect the
engine.
During normal driving, the engine
coolant temperature stabilizes at 100 °C
(210 °F) or less, and the gauge indicates
a range lower than 100 °C (210 °F).
▼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

If the low fuel warni
ng light illuminates or
the fuel level is very low, refuel as soon as
possible.
Refer to Low Fuel Warning Indication/
Warning Light on page 7-33.
NOTE
After refueling, it may require some time
for the indicator to stabilize. In addition,
the indicator may deviate while driving
on a slope or curve since the fuel moves
in the tank.
When Driving
Instrument Cluster and Display
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Driving Tips
▼Driving Tips
WA R N I N G
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
difficult to
control the vehicle which could result in an
accident.
Passing
For extra power wh en 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 off,
manual shift mode does not switch to
automatic shift mode even if the
accelerator pedal is completely
depressed. Operate the selector lever.
Climbing steep gra des 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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Brake System
▼Foot Brake
This vehicle has power-assisted brakes
that adjust automatically through normal
use.

Should power-assist fail, you can stop by
applying greater force than normal to the
brake pedal. But the d
istance required to
stop will be greater than usual.
WA R N I N G
Do not coast with the engine stalled or
turned off,
find a safe place to stop:
Coasting with the engine stalled or turned
off is dangerous. Braking will require more
effort, and the brake's power-assist could
be depleted if you pump the brake. This will
cause longer stopping distances or even an
accident.
Shift to a lower gear when going down
steep hills:
Driving with your foot continuously on the
brake pedal or steadily applying the brakes
for long distances is dangerous. This causes
overheated brakes, resulting in longer
stopping distances or even total brake
failure. This could cause loss of vehicle
control and a serious accident. Avoid
continuous application of the brakes.
Dry off brakes that have become wet by
driving slowly, releasing the accelerator
pedal and lightly applying the brakes
several times until the brake performance
returns to normal:
Driving with wet brakes is dangerous.
Increased stopping distance or the vehicle
pulling to one side when braking could
result in a serious accident. Light braking
will indicate whether the brakes have been
affected.
CAUTION
 Do not drive with your foot held on the
clutch pedal or brake pedal, or hold the
clutch pedal depressed halfway
unnecessarily. Doing so could result in
the following:
 The clutch and brake parts will wear
out more quickly.
 The brakes can overheat and adversely
affect brake performance.
 Always depress the brake pedal with the
right foot. Applying the brakes with the
unaccustomed left foot could slow your
reaction time to an emergency situation
resulting in insufficient braking
operation.
Wear shoes appropriate for driving in
order to avoid your shoe contacting the
brake pedal when depressing the
accelerator pedal.
When Driving
Brake
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▼Cooling (Type A)
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 traffic, monitor the
high engine coolant temperature warning
indication to see if it is displayed (page
7-28).
The air conditioner may cause engine
overheating. If the warning indication is
displayed, turn the air conditioner off (page
7-20).
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 wh en the temperature
control dial is set at the extreme hot or
cold position).
▼ Ventilation
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 dehumidified heating is desired, turn
on the air conditioner.
WA R N I N G
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
(Type A)
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 off.
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............................ 7-16 Jump-Starting............................. 7-16
Emergency Starting.........................7-19 Starting a Flooded Engine.......... 7-19
Push-Starting.............................. 7-19
Overheating......................................7-20 Overheating................................ 7-20
Emergency Towing.......................... 7-22 Towing Description.................... 7-22
Tiedown Hooks
*......................... 7-23
Warning/Indicator Lights and
Warning Sounds.............................. 7-26If a Warning Light Turns On or
Flashes........................................ 7-26
Message Indicated on Multi-
information Display.................... 7-38
Warning Sound is Activated....... 7-41
When Liftgate/Trunk Lid Cannot be
Opened..............................................7-46 When Liftgate/Trunk Lid Cannot be
Opened........................................7-46
Active Driving Display Does Not
Operate............................................. 7-48 If the Active Driving Display Does
Not Operate
*............................... 7-48
Windshield Wipers Operate at High
Speed.................................................7-49 Windshield Wipers Operate at High
Speed.......................................... 7-49
*Some models.7-1
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Overheating
▼Overheating
If the engine coolant temperature gauge
indicates overheati
ng 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.
WA R N I N G
Pull over to a safe location, then switch
the ignition off 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 is operating,then turn off 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.
1. Cooling system cap
2. Cooling fan
3. Coolant reservoir

If you find no problems, the engine is
cool, and no leaks are obvious:
Carefully add coolant as required (page
6-17).
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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