2019 MAZDA MODEL CX-3 engine

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.
Cooling system cap Coolant reservoir
Cooling fan
If you find no problems, the engine is
cool, and no leaks are obvious:
Carefully add coolant as required (page
6-25).
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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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 6-25). 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 7-22.
CAUTION
Do not drive the vehicle with the high engi ne coolant temperature warning light illumi‐
nated. Otherwise, it could resu lt in damage to the engine.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
Power Steering Mal-
function Indicator Light The light illuminates/flashes if the electric power steering ha
s a malfunction.
If the light illuminates/flashes, stop the vehicle in a safe pl ace and do not operate the
steering wheel. There is no problem if the light turns off afte r a while. Contact an Au-
thorized Mazda Dealer if the lig ht illuminates/flashes continuously.
NOTE
•If the indicator light illuminates/flashes, the power steering will not operate normal-
ly. If this happens, the steering wheel can still be oper ated, however, the operation
may feel heavy compar ed to normal, or the steering wheel could vibrate when turn-
ing.
•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.
▼ Contact Authorized Mazda Deal
er and Have Vehicle Inspected
If any of the following warning lights o r the indicator light turns on/flashes, the system may
have a malfunction. Contact an Authorized Mazda Dealer to have your vehicle inspected.
SignalWarning
ABS Warning LightIf 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 A uthorized 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 wh ile the ABS warning light is illuminated.
Master Warning
Light (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 7-27.
(Vehicles with type A audio)
The light illuminates continuously if any one of the following
occurs. Consult an Author-
ized Mazda Dealer.
•There is a malfunction in the battery management system.•There is a malfunction in the brake switch.
Electric Parking
Brake (EPB) Warn- ing Light The warning light illuminates when
the system has a malfunction. Have your vehicle in-
spected at an Authorized Mazda Dealer.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
(Red)
Brake Pedal Opera-
tion Demand Warn- ing Light When only flashing
Flashes if there is the possibility of the vehicle not being he
ld in the stopped position by
the AUTOHOLD function, such as on steep slopes. Depress and hol d your foot on the
brake pedal.
When flashing and beep sound is activated at the same time
The warning light flashes and t he beep sound is activated for about five seconds if there is
a problem with the system. If th e warning light flashes and the warning sound is activated,
immediately depress the brake pe dal and stop using the AUTOHOLD function then con-
tact an Authorized Mazda Dealer.
WA R N I N G
Immediately depress the brake pedal if the warning light flashes and the beep sound is acti‐
vated while using the AUTOHOLD function:
Because the AUTOHOLD function is canceled forcibly, the vehicle may move unexpectedly
and result in an accident.
Check Engine Light If this light illuminates while dr
iving, the vehicle may have a problem. It is important to
note the driving conditions when the light illuminated and cons ult an Authorized Mazda
Dealer.
The check engine light may illumi nate in the following cases:
•The fuel tank level being very low or approaching empty.•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.
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.
Automatic Trans-
axle Warning Light*
The light illuminates when the transaxle has a problem.
CAUTION
If the automatic transaxle warning light illumi nates, the transaxle has an electrical prob‐
lem. Continuing to drive your Mazda in this condition could cause damage to your trans‐
axle. Consult an Authorized Mazda Dealer as soon as possible.
(Turns on)
TCS/DSC Indicator Light If the light stays on, the TCS, DSC or the brake assist system may have a malfunction and
they may not operate correctly.
Take your vehicle to an Authori zed Mazda Dealer.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
(Red)
(Turns on)
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)
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 Author‐
ized Mazda Dealer as soon as possible.
Refer to Emergency Operation for Starting the Engine on page 4- 9.
Security Indicator
Light If the engine does not start with the correct key, and the secu
rity indicator light remains
illuminated or flashin g, try the following:
Make sure the key is within the o perational range for signal transmission. Switch the igni-
tion off, and then restart the engine. If the engine does not s tart after 3 or more tries, con-
tact an Authorized Mazda Dealer.
(Amber)
High Beam Control System (HBC)
Warning Light
*
The light remains turned on if th ere is a problem with the system. Have your vehicle in-
spected at an Authorized Mazda Dealer.
NOTE
If the Forward Sensing Camera (FSC) field of view is impaired during bad weather condi-
tions (such as rain, fog, and snow) and when the windshield is dirty, the warning indica-
tion/warning light for the High Beam Control System (HBC) may display/turn on. Howev-
er, this does not indicate a problem.
(Turns on)
Lane Departure
Wa r n i n g S y s t e m
(LDWS) Warning
Light
*
•The warning light remains turned on if there is a problem with the system. Have your
vehicle inspected at an Authorized Mazda Dealer.
•The LDWS does not operate when the warning light illuminates.
CAUTION
A problem in the system may be indicated un der the following conditions. Have your ve‐
hicle inspected at an Authorized Mazda Dealer.
 When the light remains turned on while driving the vehicle.
When the system is canceled automatically, the light turns on. Normally, the system re‐
stores automatically and the light turns off, however, if the light remains turned on,
there may be a problem with the system.
 The light does not illuminate when the ignition is switched ON.
 Always use tires for all wheels that are of the specified size, and the same manufacture,
brand, and tread pattern. In addition, do not use tires with significantly different wear
patterns on the same vehicle. If such improper tires are used, the LDWS may not operate
normally.
 When an emergency spare tire is used, the system may not operate normally.
NOTE
If the windshield area in front of the Fo rward Sensing Camera (FSC) is fogged or ob-
structed, the light turns on temporarily. If the light remains turned on, there may be a
problem with the system.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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SignalWarning
(Amber)
Mazda Radar Cruise Control with Stop & Go function
(MRCC with Stop & Go function)
Wa r n i n g L i g h t
*
The warning light turns on if t here is a malfunction in the sys tem while the Mazda Radar
Cruise Control with Stop & Go f unction (MRCC with Stop & Go fun ction) system is on.
Have your vehicle inspected at an Authorized Mazda Dealer.
Blind Spot Monitor- ing (BSM) OFF In-
dicator Light
*
A problem in the system may be indicated under the following co nditions.
Have your vehicle inspected at an Authorized Mazda Dealer.
•The light does not turn on when the ignition is switched ON.•The light remains on even when the Blind Spot Monitoring (BSM) system can be operat-
ed.
•The light turns on while driving the vehicle.
NOTE
If the vehicle is driven on a road with less traffic and few vehicles that the radar sensors
can detect, the system may pause (The Blin d Spot Monitoring (BSM) OFF indicator light
in the instrument cluster illuminates). Ho wever, it does not indicate a malfunction.
LED Headlight
Wa r n i n g L i g h t*
This light illuminates if there is a malfunction in the LED hea dlight. Have your vehicle
inspected by an Authorized Mazda Dealer.
▼ Taking Action
Take the appropriate action and verify that the warning light t
urns off.
SignalWarning 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 be-
cause fuel inside the fuel tank moves around
according to the driv
ing conditions and the
vehicle posture. Add fuel.
Check Fuel Cap Warn-
ing Light If the check fuel cap warning light illumi-
nates while driving, t
he fuel-filler cap may
not be installed properly. Stop the engine and rein
stall the fuel-filler
cap.
Refer to Refueling on page 3-27.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Message Indicated on Display*
If a message is displayed in the center display (Type B audio), take appropriate action (in a
calm manner) according to the displayed message.

(Display example)
▼ Stop Vehicle in Safe Place Immediately
If the following messages are displayed in the center display (
Type B audio), a vehicle
system may be malfunctioning. St op the vehicle in a safe place and contact an Authorized
Mazda Dealer.
Display Indicated Condition
Displays if the engine coolant temperature has increased excess ively.
Displays if the charging system has a malfunction.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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If the Active Driving
Display Does Not Operate
If the active driving display does not
operate, switch the ignition off and then
restart the engine. If the active driving
display does not operate even with the
engine restarted, have the vehicle
inspected at an Autho rized Mazda Dealer.
If Trouble Arises
Active Driving Display Does Not Operate
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