check engine light MAZDA MODEL 3 HATCHBACK 2014 (in English) User Guide

7–19
If Trouble Arises
Overheating
Overheating
If the High engine coolant temperature
warning light illuminates, the vehicle loses
power, or you hear a loud knocking or
pinging noise, the engine is probably too
hot.
WARNING
Switch the ignition to 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 indefi nitely 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 High engine coolant temperature
warning light illuminates:
1. Drive safely to the side of the road and
park off the right-of-way.
2. Put a vehicle with an automatic
transaxle in park (P), a manual
transaxle 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.
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.
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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 6-28 . If it's low, add the appropriate amount of engine oil
while being careful not to overfi 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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*Some models.7–27
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Contact Authorized Mazda Dealer and Have Vehicle Inspected
If any of the following warning lights turns on/fl 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 audio 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.
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. NOTE
yWhen 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.
yThe 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-fi ller cap is missing or not tightened securely.
If the check engine light remains on, or it fl 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.
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*Some models.7–28
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Signal Warning
Air Bag/Front Seat
Belt Pretensioner
System Warning
Light
A system malfunction is indicated if the warning light constantly fl 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.
Tire Pressure
Monitoring System
Warning Light
*
If the tire pressure monitoring system has a malfunction, the tire pressure warning
light fl 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 4-10 .
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7–30
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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). NOTE
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-fi ller cap may not be
installed properly. Stop the engine and reinstall the fuel-fi ller cap.
Refer to Fuel-Filler Cap on page 3-30
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*Some models.7–39
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
Mazda Radar Cruise Control
(MRCC) System Warnings *
The Mazda Radar Cruise Control (MRCC)
system warnings notify the driver of
system malfunctions and cautions on use
when required.
Check based on the beep sound.
Cautions What to check
The beep sounds 1 time
while the Mazda Radar
Cruise Control (MRCC)
is operating The vehicle speed is
slower than 25 km/h (16
mph) and the Mazda
Radar Cruise Control
(MRCC) system has
been canceled.
The beep sounds
continuously while
driving The distance between
your vehicle and the
vehicle ahead is too
close. Verify the safety
of the surrounding area
and reduce vehicle
speed.
When the Mazda
Radar Cruise Control
(MRCC) is operating,
the beep sounds and the
Mazda Radar Cruise
Control (MRCC)
warning light (amber)
in the instrument cluster
fl ashes. A malfunction in
the system may be
indicated. Have your
vehicle inspected at
an Authorized Mazda
Dealer.
Collision warning
If there is the possibility of a collision
with a vehicle or obstruction ahead, the
beep sounds continuously and a warning is
indicated in the display.
Power Steering Warning Buzzer
If the power steering system has
a malfunction, the power steering
malfunction light turns on or fl ashes and
the buzzer operates at the same time.
Refer to Warning/Indicator Lights on page
4-21 .
Over Rev. Buzzer *
The buzzer sounds to notify the driver if
the engine speed is about to exceed the
permissible engine speed.
CAUTION
Operate the accelerator and shift gears
according to the driving conditions so
that the buzzer does not sound. If the
engine speed exceeds the permissible
engine speed, the engine could be
damaged.
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