check engine MAZDA MODEL 3 SEDAN 2022 Owner's Manual

6. Make sure the cooling fan isoperating, 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.
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 6-19).
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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If a Warning Light TurnsOn or Flashes
▼If a Warning Light Turns On or
Flashes
If any warning light turns on/flashes,
take appropriate action for each light.
There is no problem if the light turns
off, however if the light does not turn
off
or turns
on/flashes again, consult
an Authorized Mazda Dealer.
The details for some warnings can be
viewed on the center display or
multi-information display in the
instrument cluster.
Center display
1. Select “Information” on the home screen.
2. Select “Vehicle Status Monitor”.
3. Select the applicable warning to view the warning details.
NOTE
You can also display the currently
occurring warning by sliding the
commander knob to the left while on
the home screen of the center display.
Multi-information display
1. Press the INFO switch on thesteering switch to display the
warning indication screen.
Refer to Multi-information Display
on page 4-20.
▼Brake System Warning Indication/
Warning Light
This warning has the following
functions:
Warning light inspection
For an operation check, make sure that
the light turns on when the ignition is
switched on, and turns off a few
seconds later or when the engine is
started.
When the light turns on
If the brake system warning light
remains illuminated the brake fluid
may be low or there could be a
problem with the brake system. Park
the vehicle in a safe place immediately
and contact an Authorized Mazda
Dealer.
Refer to Inspecting Brake/Clutch Fluid
Level on page 6-20.
WARNING
Do not drive with the brake system
warning light illuminated. Contact an
Authorized Mazda Dealer to have the
brakes inspected as soon as possible:
Driving with the brake system warning
light illuminated is dangerous. It
indicates that your brakes may not
work at all or that they could
completely fail at any time. If this light
remains illuminated, after checking
that the parking brake is fully released,
have the brakes inspected
immediately.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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3. Inspect the engine oil level (page6-18). If it's low, add the
appropriate amount of engine oil
while being careful not to overfill.
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 off
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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▼ABS Warning Indicat ion/Warning
Light
If the ABS warning light stays on while
you're driving , the ABS control unit has
detected a system malfunction. If this
occurs, your brakes will function
normally as if the
vehicle had no ABS.
Should this happen, consult an
Authorized Mazda Dealer as soon as
possible.
NOTE
When the engine is jump-started to
charge the battery, uneven rpm
occurs and the ABS warning light
may illuminate. If this occurs, it is the
result of the weak battery and does
not indicate an ABS malfunction.
Recharge the battery.
The brake assist system does not
operate while the ABS warning light
is illuminated.
▼ Master Warning Indication
The indication displays if the system
has a malfunction.
Check the reason for the indication
displaying on the center display or
multi-information display.
Refer to If a Warning Light Turns On or
Flashes on page 7-27.
▼
Brake Control System Warning
Indication/Warning Light
The warning light illuminates when the
system has a malfunction. Have your
vehicle inspected at an Authorized
Mazda Dealer.
▼Electric Parking Brake (EPB)
Indication/Indicator Light
This warning has the following
functions:
Parking brake warning/Indicator light
inspection
The light illuminates when the parking
brake is applied with the ignition
switched to START or ON. It turns
off
when the parking brake is released.
When the light is flashing
The light flashes if the Electric Parking
Brake (EPB) has a malfunction. If the
light remains flashing even if the
Electric Parking Brake (EPB) switch is
operated, consult an Authorized
Mazda Dealer as soon as possible.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Brake Override Warning Indication
This message is displayed when the
accelerator pedal and brake pedal are
depressed at the same time while
driving.
Release the accelerator pedal and
depress the brake pedal.
▼Check Engine Indication/Light
If this light illuminates while driving ,
the vehicle may have a problem. It is
important to note the driving
conditions when the light illuminated
and consult an Authorized Mazda
Dealer.
The check engine light may illuminate
in the following cases:
The engine's electrical system has a
problem.
The emission control system has a
problem.
The fuel-filler cap is missing or not
tightened securely.
The fuel tank level being very low or
approaching empty.
If the check engine light remains on, or
it flashes continuously , do not drive at
high speeds and consult an Authorized
Mazda Dealer as soon as possible.
WARNING
If the check engine light turns on, do
not disconnect the battery cables.
If the battery cables are disconnected
and then reconnected, the engine
could be damaged and catch on fire.
▼i-stop Warning Indication/
Warning Light (Amber)*
The light turns
on/flashes
continuously if the system has a
problem.
Have the vehicle inspected by an
Authorized Mazda Dealer.
▼ Automatic Transmission Warning
Indication/Warning Light*
The indication/light illuminates when
the transmission has a problem.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼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)
flashes, 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.
“Key Not Detected” is displayed
If the presence of the key cannot be
detected (dead battery, battery
malfunction, no key), it is displayed
when the driver attempts to start the
engine (push button start operation,
brake pedal depression).
Displayed when it is determined that
a key that was in the vehicle has
been removed from the vehicle. (Key
taken out warning. Other than
IG-OFF).
▼ Security Indicator Light
If the security indicator light flashes
continuously while you are driving, do
not shut off the engine. Go to an
Authorized Mazda Dealer and have it
checked. If the engine is shut off while
the indicator light is flashing, you will
not be able to restart it.
Make sure the key is within the
operational range for signal
transmission. Switch the ignition off,
and then restart the engine. If the
engine does not start after 3 or more
tries, contact an Authorized Mazda
Dealer.
NOTE
Because the electronic codes are reset
when the immobilizer system is
repaired, the keys are needed. Make
sure to bring all the keys to an
Authorized Mazda Dealer so that they
can be programmed.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Check Fuel Cap Warning
Indication/Warning Light
If the check fuel cap warning light
illuminates while driving, the
fuel-filler
cap may not be installed properly.
Action to be taken
Stop the engine and reinstall the
fuel-filler cap.
Refer to Refueling on page 3-29.
▼ Engine Oil Level Warning
Indication/Warning Light
This warning light indicates that the
engine oil level is around the MIN
mark (page 6-18).
CAUTION
Do not continue to drive the vehicle
with the engine oil level warning
indication/warning light displayed/
turned on. If the vehicle continues to
be driven with an
insufficient amount
of engine oil, it could cause damage to
the engine.
Action to be taken
Add 1 L (0.26 US gal, 0.22 Imp gal) of
engine oil (page 6-16).
▼ 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 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 light
may not operate.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Display*1*2*3ContentAction to be taken
Mazda Radar Cruise
Control Canceled. Drive
Safely This message is indicated when the
Mazda Radar Cruise Control
(MRCC), Mazda Radar Cruise Con-
trol with Stop & Go function (MRCC
with Stop & Go function), and the
Traffic Jam Assist (TJA) have been can-
celed other than by the driver.
Have your vehicle inspected by an
Authorized Mazda Dealer.
Distance & Speed Alert
Operation Canceled
Drive Safely This message is indicated when the
Distance & Speed Alert (DSA) have
been canceled other than by the driv-
er.
Have your vehicle inspected by an
Authorized Mazda Dealer.
Cruise Control Opera-
tion Canceled. Drive
Safely This message is indicated when the
Cruise Control have been canceled
other than by the driver.
Have your vehicle inspected by an
Authorized Mazda Dealer.
Emergency Braking Acti-
vated. Depress Brake
Pedal to Hold Stop This message is indicated after the
Smart Brake Support (SBS) brakes op-
erate and when the Smart Brake Sup-
port (SBS) is canceled.
Depress the brake pedal.
Touch Key Fob to Push
Button Start Switch This message is indicated when the
key battery is weak (battery dead or
damaged key). Touch the key against push button
start to start the engine.
Refer to Engine Start Function When
Key Battery is Dead on page 4-8.
Depress Brake Pedal to
Start Vehicle This message is indicated when the
push button start is pressed without
depressing the brake pedal. When starting the engine, press the
push button start with the brake ped-
al depressed.
Check Gear Selector
Lever Position This message is indicated when the
selector lever is shifted to the P or R
position while driving.
Check the selector lever position.
Close Door and Fasten
Seat Belt This message is indicated when AU-
TOHOLD is about to operate and a
door is opened or a seat belt is unfas-
tened. When the AUTOHOLD is turned on,
close the doors and fasten seat belts.
Wiper Blades Must Be
on Windshield Before
Operating This message is indicated when the
ignition is switched ON with the wip-
er arms at the service positions.
Return the wiper arms to the initial
positions.
Windshield Wiper Range
of Motion Reduced. Re-
move Obstruction(s) This message is indicated when there
is snow or dirt accumulation on the
windshield and the wiper operation
range is narrowed.
Remove foreign matter from the
windshield.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼Low Fuel Warning Beep
When the low fuel warning light
flashes, a warning beep is activated
once at the same time.
▼Brake System Warning Beep (With
M Hybrid)
A warning beep is activated if a
problem with the brake system occurs
and the brakes may not work as
intended. Decelerate the vehicle while
checking the safety of the surrounding
area, and park the vehicle in a safe
place. After stopping the vehicle,
contact an Authorized Mazda Dealer.
▼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.
▼
Selector Lever Not In P or N
Reminder Warning Beep (With M
Hybrid)
A warning beep is activated
continuously if the driver's door is
opened with the selector lever in a
position other than the P or N position
when the engine is running. Shift the
selector lever to the P or N position, or
close the driver's door.
▼
i-stop Warning Beep*
If the driver's door is opened while
engine idling is stopped, the warning
sound operates to notify the driver
that engine idling is stopped. It stops
when the driver's door is closed.
▼ Electric Parking Brake (EPB)
Warning Beep
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.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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▼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
M Hybrid problem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
▼
Blind Spot Monitoring (BSM)
System Warning Beep*
The Blind Spot Monitoring (BSM)
warning beep operates when the turn
signal lever is operated to the side
where the Blind Spot Monitoring
(BSM) warning light is illuminated.
▼Front Cross Traffic Alert (FCTA)
Warning Beep*
The Front Cross Traffic Alert (FCTA)
warning beep is activated if there is a
possibility of collision with a vehicle
approaching from the front on the left
and right sides of the vehicle.
▼Rear Cross
Tra ffi c Alert (RCTA)
Warning Beep*
The Rear Cross Traffic Alert (RCTA)
warning beep is activated if there is a
possibility of collision with a vehicle
approaching from the rear on the left
and right sides of the vehicle.
▼ Lane Departure Warning Sound*
While the system is operating, if the
system determines that the vehicle may
depart from the lane, it sounds a
warning sound.
NOTE
The volume of the Lane Departure
Warning System (LDWS) warning
sound can be changed.
Refer to the Settings section in the
Mazda Connect Owner's Manual.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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