2018 MAZDA MODEL 3 HATCHBACK warning lights

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.
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6. Reinstall the cover and make sure thatit is securely installed.
Replacing the fuses under the hood
If the headlights or other electrical
components do not work and the fuses in
the cabin are normal, inspect the fuse
block under the hood. If a fuse is blown, it
must be replaced. Follow these steps:

1. Make sure the ignition is switched off, and other switches are off.
2. Remove the fuse block cover.
3. If any fuse but the MAIN fuse is
blown, replace it with a new one of the
same amperage rating .
Normal
Blown
WARNING
Do not replace the main fuse and
multiplex slow blow fuse by yourself.
Have an Authorized Mazda Dealer
perform the replacement:
Replacing these fuses by yourself is
dangerous because they are high
current fuses. Incorrect replacement
could cause an electrical shock or a
short circuit resulting in a fire.
4. Reinstall the cover and make sure that it is securely installed.
Maintenance and Care
Owner Maintenance
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▼Fuse Panel Description
Fuse block (Engine compartment)

Multiplex slow blow fuse
DESCRIPTION FUSE
RATING PROTECTED COMPONENT
1F OG 1 5 A
Fog lights
*
2H /L H I 2 0 A
Headlight high beam*2
3 H/CLEAN 20 A ―
4 STOP 10 A Brake lights
5 ROOM 15 A Overhead light
6
7.5 A Engine control system
7FUEL WARM 15 A ―
8 HAZARD 25 A Hazard warning flashers, Turn signal lights
9 ABS/DSCS 30 A ABS, Dynamic stability control system
10 METER2 7.5 A ―
11 AUDIO2 7.5 A Audio system
12 BOSE 25 A
Bose
® Sound System-equipped model*
13 AUDIO1 15 A Audio system
14 FUEL PUMP 15 A Fuel system
15 HID R DRL 15 A Headlight (RH)
*1, Daytime running lights*
16 AT PUMP 15 A ―
17 HORN 15 A Horn
18 TAIL 15 ATaillights, License plate lights,
Parking lights, Front side-mark-
er lights
Maintenance and Care
Owner Maintenance
*Some models.6-59
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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..................... 7-6
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.............................. 7-25If a Warning Light Turns On or
Flashes........................................ 7-25
Message Indicated on Display
*..........
.................................................... 7-36
Warning Sound is Activated....... 7-38
When Liftgate/Trunk Lid Cannot be
Opened..............................................7-43 When Liftgate/Trunk Lid Cannot be
Opened........................................7-43
Active Driving Display Does Not
Operate
*........................................... 7-45
If the Active Driving Display Does
Not Operate................................ 7-45
*Some models.7-1
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Parking in an Emergency
The hazard warning lights should always
be used when you stop on or near a
roadway in an emergency.

The hazard warning lights warn other
drivers that your vehicle is a traffic hazard
and that they must take extreme caution
when near it.

Depress the hazard warning flasher and all
the turn signals will flash. The hazard
warning indicator lights in the instrument
cluster flash simultaneously.
NOTE
The turn signals do not work when the
hazard warning lights are on.
Check local regulations about the use of
hazard warning lights while the vehicle
is being towed to verify that it is not in
violation of the law.
If Trouble Arises
Parking in an Emergency
7-2
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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, h owever if the light does not turn off or turns on/flashes again,
consult an Authorized Mazda Dealer.
(Vehicles with type B audio)
The details for some warnings can be viewed on the center display.
1. If the warning light is turned on, select
icon on the home screen to display the
application screen.
2. Select “Vehicle Status Monitor”.
3. Select “Warning Guidance” to display the current warnings.
4. Select the applicable warni ng to view the warning details.
▼Stop Vehicle in Safe Place Immediately
If any of the following warning
lights turns on, the system may have a malfunction. Stop the
vehicle in a safe place immediately and contact an Authorized M azda Dealer.
SignalWarning
Brake System Warning
Light Without Electric Parking Brake (EPB)
This warning has the
following functions:
Parking brake warning/Warning light inspection
The light illuminates when the par king brake is applied with the ignition switched to
START or ON. It turns off when the parking brake is fully relea sed.
Low brake fluid level warning
If the brake warning light remains illuminated even though the parking brake is re-
leased, the brake fluid may be l ow or there could be a problem with the brake system.
Park the vehicle in a safe place immediately and contact an Aut horized Mazda Dealer.
WA R N I N G
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.
CAUTION
In addition, the effectiveness of the brakin g may diminish so you may need to depress
the brake pedal more strongly than normal to stop the vehicle.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
Brake System Warning
Light With Electric Parking Brake (EPB)
This warning has the following functions:
Parking brake warning/Warning light inspection
The light illuminates when the electric parking brake (EPB) is
applied with the igni-
tion switched to START or ON. It turns off when the electric pa rking brake (EPB) is
released.
When the light turns on
If the brake system warning light remains turned on even though the electric parking
brake (EPB) is released, the brak e 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 Author-
ized Mazda Dealer.
When the light is flashing
The light flashes if the electric parking brake (EPB) has a mal function.
If the light remains flashing ev en if the electric parking brake (EPB) switch is operat-
ed, consult an Authorized Mazd a Dealer as soon as possible.
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.
CAUTION
In addition, the effectiveness of the braking may diminish so you may need to depress
the brake pedal more strongly than normal to stop the vehicle.
Electronic Brake Force Distribution System Wa r n i n g If the electronic brake force di
stribution control unit determines that some compo-
nents are operating incorrectly , the control unit may illuminate the brake system
warning light and the ABS warni ng light simultaneously. The problem is likely to be
the electronic brake force distribution system.
WARNING
Do not drive with both the ABS warning light and brake warning light illuminated.
Have the vehicle towed to an Authorized Mazda Dealer to have the brakes inspected as
soon as possible:
Driving when the brake system warning ligh t and ABS warning light are illuminated si‐
multaneously is dangerous.
When both lights are illuminated, the rear wheels could lock more quickly in an emer‐
gency stop than under normal circumstances.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
Charging System Warn-
ing Light If the warning light illuminates
while driving, it indicates a malfunction of the alter-
nator or of the charging system.
Drive to the side of the road and park off the right-of-way. Co nsult an Authorized
Mazda Dealer.CAUTION
Do not continue driving when the charging system warning light is illuminated be‐
cause the engine could stop unexpectedly.
Engine Oil Warning Light This warning light indicates
low engine oil pressure.
CAUTION
Do not run the engine if the oil pressure is low. Otherwise, it could result in extensive
engine damage.
If the light illuminates or the warning indication is displayed while driving:
1. Drive to the side of the road and park off the right-of-way o n level ground.
2. Turn off the engine and wait 5 minutes for the oil to drain back into the oil pan.
3. Inspect the engine oil level (page 6-24). If it's low, add th e 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.
(Red)
High Engine Coolant
Temperature Warning Light The light flashes when the engine coolant temperature is extrem
ely high, and illumi-
nates when the engine coolant temperature increases further.
Handling Procedure
Flashing light
Drive slowly to reduce engine l oad until you can find a safe place to stop the vehicle
and wait for the engine to cool down.
Illuminated light
This indicates the possibility of overheating. Park the vehicle in a safe place immedi-
ately and stop the engine.
Refer to Overheating on page 7-20.
CAUTION
Do not drive the vehicle with the high engi ne coolant temperature warning light illumi‐
nated. Otherwise, it could result in damage to the engine.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-27
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