2016 MAZDA MODEL 3 HATCHBACK warning indicator lights

7–25
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Signal Warning


Electronic Brake Force
Distribution System
Warning If the electronic brake force distribution control unit determines that some components
are operating incorrectly, the control unit may illuminate the brake system warning
light and the ABS warning 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 light and ABS warning light are
illuminated simultaneously is dangerous.
When both lights are illuminated, the rear wheels could lock more quickly in an
emergency stop than under normal circumstances.


Charging System
Warning Light If the warning light illuminates while driving, it indicates a malfunction of the
alternator or of the charging system.
Drive to the side of the road and park off the right-of-way. Consult an Authorized
Mazda Dealer. CAUTION
Do not continue driving when the charging system warning light is illuminated
because 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 on 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 6-30 . If it's low, add the appropriate amount of engine
oil while being careful not to over¿ ll.
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.
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7–26
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Signal Warning


(Red)
High Engine Coolant
Temperature Warning
Light The light À ashes when the engine coolant temperature is extremely high, and
illuminates when the engine coolant temperature increases further.
Handling Procedure
Flashing light
Drive slowly to reduce engine load until you can ¿ nd 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
immediately and stop the engine.
Refer to Overheating 7-19 .
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 Indicator
Light The light illuminates/À ashes if the electric power steering has a malfunction.
If the light illuminates/À ashes, stop the vehicle in a safe place and do not operate the
steering wheel. There is no problem if the light turns off after a while. Contact an
Authorized Mazda Dealer if the light illuminates/À ashes continuously.
N O T E
y If the indicator light illuminates/À ashes, the power steering will not operate normally.
If this happens, the steering wheel can still be operated, however, the operation may
feel heavy compared to normal, or the steering wheel could vibrate when turning.
y 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
t o n o r m a l .

Contact Authorized Mazda Dealer and Have Vehicle Inspected
If any of the following warning lights or the indicator light turns on/À ashes, the system may
have a malfunction. Contact an Authorized Mazda Dealer to have your vehicle inspected.

Signal Warning


Master Warning
Light
y (Vehicles with type B audio)
The light turns on when the system has a malfunction.
Operate the center display and verify the content.
Refer to If a Warning Light Turns On or Flashes on page 7-24 .

y (Vehicles without type B audio)
The light illuminates continuously if any one of the following occurs. Consult an
Authorized Mazda Dealer.
y There is a malfunction in the battery management system.
y There is a malfunction in the brake switch.
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7–27
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning


ABS 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. N O T E
y 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.
y The brake assist system does not operate while the ABS warning light is illuminated.


Check Engine 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:
y The fuel tank level being very low or approaching empty.
y The engine's electrical system has a problem.
y The emission control system has a problem.
y The fuel-¿ ller cap is missing or not tightened securely.

If the check engine light remains on, or it À ashes continuously , do not drive at high speeds
and consult an Authorized Mazda Dealer as soon as possible.


Automatic
Transaxle Warning
Light
* The light/indication illuminates when the transaxle has a problem.
CAUTION
If the automatic transaxle warning light illuminates, the transaxle has an electrical
problem. Continuing to drive your Mazda in this condition could cause damage to your
transaxle. Consult an Authorized Mazda Dealer as soon as possible.


Air Bag/Seat
Belt Pretensioner
System Warning
Light A system malfunction is indicated if the warning light constantly À ashes, constantly
illuminates or does not illuminate at all when the ignition is switched ON. If any of these
occur, consult an Authorized Mazda Dealer as soon as possible. The system may not operate
in an accident. WARNING

Never tamper with the air bag/pretensioner systems and always have an Authorized
Mazda Dealer perform all servicing and repairs:

Self-servicing or tampering with the systems is dangerous. An air bag/pretensioner
could accidentally activate or become disabled causing serious injury or death.
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7–28
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning


Tire Pressure
Monitoring System
Warning Light
* If the tire pressure monitoring system has a malfunction, the tire pressure warning
light À ashes for about 1 minute when the ignition is switched ON and then continues
illuminating. Have your vehicle checked by an Authorized Mazda Dealer as soon as
possible.
WARNING
If the tire pressure monitoring system warning light illuminates or fl ashes, or the tire
pressure warning beep sound is heard, decrease vehicle speed immediately and avoid
sudden maneuvering and braking:
If the tire pressure monitoring system warning light illuminates or fl ashes, or the tire
pressure warning beep sound is heard, it is dangerous to drive the vehicle at high
speeds, or perform sudden maneuvering or braking. Vehicle drivability could worsen
and result in an accident.
To determine if you have a slow leak or a fl at, pull over to a safe position where you can
check the visual condition of the tire and determine if you have enough air to proceed
to a place where air may be added and the system monitored again by an Authorized
Mazda Dealer or a tire repair station.

Do not ignore the TPMS Warning Light:
Ignoring the TPMS warning light is dangerous, even if you know why it is illuminated.
Have the problem taken care of as soon as possible before it develops into a more
serious situation that could lead to tire failure and a dangerous accident.


(Red)
(Illuminate)
KEY Warning Light If any malfunction occurs in the keyless entry system, it illuminates continuously.
CAUTION
If the key warning indicator light illuminates 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 .


(Amber)
(Flashes)
Lane Departure
Warning System
(LDWS) Warning
Light
* The warning light À ashes when the system has a malfunction. Have your vehicle inspected
at an Authorized Mazda Dealer.
The LDWS does not operate when the warning light À ashes.

CAUTION
¾ If any of the following cases occurs, the system may have a malfunction. Have the vehicle
inspected at an Authorized Mazda Dealer.

¾ The light fl ashes while the vehicle is being driven.
¾ The light does not illuminate when the ignition is switched ON.
¾ Always use tires for all wheels that are of the specifi ed size, and the same manufacture,
brand, and tread pattern. In addition, do not use tires with signifi cantly diff erent wear
patterns on the same vehicle. If such improper tires are used, the LDWS may not operate
normally.
¾ When an emergency spare tire is used, the system may not operate normally.
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7–29
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning


Headlight
Auto-Leveling
Malfunction
Indicator Light
* This indicator light stays on for a few seconds when the ignition is switched ON.
Thereafter, the indicator light will illuminate when the headlight auto-leveling system has a
malfunction.
If the indicator light illuminates, contact an Authorized Mazda Dealer.
N O T E
Vehicles with the adaptive front lighting system (AFS) are not equipped with the headlight
auto-leveling malfunction indicator light. If there is a malfunction with the headlight auto-
leveling function, the AFS OFF indicator light À ashes.


(Amber)
High Beam Control
System (HBC)
Warning Light
*
When illuminated
The warning light illuminates if the area of the windshield in front of the forward sensing
camera (FSC) is fogged or obstructed.
W h e n À ashing
This light À ashes if there is a malfunction in the high beam control system (HBC). Have
your vehicle inspected by an Authorized Mazda Dealer.


(Amber)
(Flashing)
Mazda Radar
Cruise Control
(MRCC) Warning
Light
* The warning light À ashes if there is a malfunction in the system while the Mazda Radar
Cruise Control (MRCC) system is on. Have your vehicle inspected at an Authorized Mazda
Dealer.

Taking Action
Take the appropriate action and verify that the warning light turns off.

Signal Warning Action to be taken


Low Fuel Warning
Light The light turns on when the remaining fuel
is about 9.0 L (2.3 US gal, 1.9 Imp gal). N O T E
The light illumination timing may vary
because fuel inside the fuel tank moves
around according to the driving conditions
and the vehicle posture. Add fuel.


Check Fuel Cap
Warning Light If the check fuel cap warning light
illuminates while driving, the fuel-¿ ller cap
may not be installed properly. Stop the engine and reinstall the fuel-¿ ller
cap.
Refer to Fuel-Filler Cap on page 3-30
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7–30
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning Action to be taken


Seat Belt Warning
Light
The seat belt warning light illuminates if the driver or front passenger's seat is occupied and
the seat belt is not fastened with the ignition switched ON.
Seat belt reminder
If the vehicle is driven with the driver or front passenger's seat belt unfastened, the seat belt
warning light illuminates and a warning beep sounds.
N O T E
If the driver or front passenger's seat belt is unfastened (only when the front passenger seat
is occupied) and the vehicle is driven at a speed faster than about 20 km/h (12 mph), the
warning light will À ash and a beep sound will be heard. After a short time, the warning light
stops À ashing, but remains illuminated, and the beep sound stops.
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).
N O T E
y The warning light À ashes and a beep sound will be heard for about 6 seconds if the driver's
seat belt is not fastened when the ignition is switched ON.
y If a driver or front passenger's seat belt is unfastened after the beep sound turns off
(warning light remains illuminated), and the vehicle speed exceeds 20 km/h (12 mph), the
warning light À ashes and beep sound activates again.
y Placing heavy items on the front passenger seat may cause the front passenger seat belt
warning function to operate depending on the weight of the item.
y 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 seat. The sensor may not function
properly because the additional seat cushion could cause sensor interference.
y When a small child sits on the front passenger seat, it is possible that the warning light will
not operate.


Door-Ajar Warning
Light The light turns on if any door is not closed
securely. Close the door securely.


Low Washer Fluid
Level Warning
Light
* This warning light indicates that little
washer À uid remains. Add washer À uid (page 6-32 ).
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7–31
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.
Signal Warning Action to be taken


Tire Pressure
Monitoring System
Warning Light
* When the warning light illuminates, and
the warning beep sound is heard (about 3
seconds), tire pressure is too low in one or
more tires.
WARNING
If the tire pressure monitoring system
warning light illuminates or fl ashes,
or the tire pressure warning beep
sound is heard, decrease vehicle
speed immediately and avoid sudden
maneuvering and braking:
If the tire pressure monitoring system
warning light illuminates or fl ashes, or
the tire pressure warning beep sound
is heard, it is dangerous to drive the
vehicle at high speeds, or perform
sudden maneuvering or braking.
Vehicle drivability could worsen and
result in an accident.
To determine if you have a slow leak or
a fl at, pull over to a safe position where
you can check the visual condition
of the tire and determine if you have
enough air to proceed to a place where
air may be added and the system
monitored again by an Authorized
Mazda Dealer or a tire repair station.

Do not ignore the TPMS Warning Light:
Ignoring the TPMS warning light is
dangerous, even if you know why it is
illuminated. Have the problem taken
care of as soon as possible before it
develops into a more serious situation
that could lead to tire failure and a
dangerous accident. Inspect the tires and adjust to the speci¿ ed
inÀ ation pressure (page 6-43 ).
N O T E
y Perform tire pressure adjustment when
the tires are cold. Tire pressure will vary
according to the tire temperature, therefore
let the vehicle stand for 1 hour or only drive
it 1.6 km (1 mile) or less before adjusting
the tire pressures. When pressure is adjusted
on hot tires to the cold inÀ ation pressure,
the TPMS warning light/beep may turn on
after the tires cool and pressure drops below
speci¿ cation.
Also, an illuminated TPMS warning light,
resulting from the tire air pressure dropping
due to cold ambient temperature will remain
illuminated even if the ambient temperature
rises. In this case, it will also be necessary
to adjust the tire air pressures. If the TPMS
warning light illuminates due to a drop in
tire air pressure, make sure to check and
adjust the tire air pressures.
y Tires lose air naturally over time and the
TPMS cannot tell if the tires are getting
too soft over time or you have a À at.
However, when you ¿ nd one low tire in a
set of four-that is an indication of trouble;
you should have someone drive the vehicle
slowly forward so you can inspect any low
tire for cuts and any metal objects sticking
through tread or sidewall. Put a few drops
of water in the valve stem to see if it bubbles
indicating a bad valve. Leaks need to be
addressed by more than simply reinÀ ating
the tire as leaks are dangerous — take it to
an Authorized Mazda Dealer.

(Amber)
Forward
Obstruction
Warning/Smart
City Brake Support
(FOW/SCBS)
Warning Light
* The light turns on if the windshield and
the radar sensor are dirty or there is a
malfunction in the system. Verify the reason why the warning light
is illuminated on the center display (page
7-24 ).
If the reason why the warning light is
illuminated is due to a dirty windshield, clean
the windshield.
If the warning light is illuminated because of
a dirty radar sensor, clean the front emblem.
For any other reasons, have the vehicle
inspected at an Authorized Mazda Dealer.


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7–32
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
KEY Warning Light
Take the appropriate action and verify that the warning light turns off.

Signal Cause Action to be taken


(Red)
(Flashing) The advanced key battery is dead. Replace the key battery (page 6-40 ).
The advanced key is not within the
operation range.
Bring the advanced key into the operation
range (page 3-7 ). The advanced key is placed in areas inside
the cabin where it is dif¿ cult for the key to
be detected.
A key from another manufacturer similar to
the advanced key is in the operation range. Take the key from another manufacturer
similar to the advanced key out of the
operation range.
Without the ignition switched off, the
advanced key is taken out of the cabin, and
then all the door are closed. Bring the advanced key back into the
cabin.

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