2019 MAZDA MODEL CX-5 check engine light

Overheating
If the temperature gauge indicates
overheating or the high engine coolant
temperature warning light turns on, the
vehicle loses power, or you hear a loud
knocking or pinging noise, the engine is
probably too hot.
WA R N I N G
Pull over to a safe location, then switch
the ignition 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 indefinitely 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 temperature gauge indicates
overheating or the high engine coolant
temperature warning light turns on:

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.
If Trouble Arises
Overheating
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SignalWarning
Charging System Warn‐
ing Indication/Warning 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 6-26). 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
Indication/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 7-18.
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
(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 the beep sound is activated for a bout 5 seconds if there is a
problem with the system. If the warning light flashes and the warning sound is activated,
immediately depress the brake pedal 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 d
riving, the vehicle may have a problem. It is important to
note the driving conditions whe n 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 tank level being ve ry low or approaching empty.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.
WA R N I N G
If the check engine light turns on, do not disconnect the battery cables.
If the battery cables are disconnected and th en reconnected, the engine could be damaged
and catch on fire.
Automatic Trans‐
axle Warning Indi‐ cation/Warning
Light
*
The indication/light illuminates when the transaxle has a problem.
CAUTION
If the automatic transaxle warning indication/lig ht illuminates, the transaxle has an electri‐
cal problem. Continuing to drive your Mazda in this condition could cause damage to your
transaxle. Consult an Authorized Mazda Dealer as soon as possible.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-28*Some models.
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SignalWarning
(Flashing)
Tire Pressure Moni‐
toring System
Wa r n i n g L i g h t
*
If the tire pressure monitoring s ystem has a malfunction, the tire pressure warning light
flashes. Have your vehicle check ed by an Authorized Mazda Deale r as soon as possible.
WA R N I N G
If the tire pressure monitoring system warning light illuminates or flashes, or the tire pres‐
sure warning beep sound is heard, decrease vehicle speed immediately and avoid sudden
maneuvering and braking:
If the tire pressure monitoring system warnin g light illuminates or flashes, or the tire pres‐
sure warning beep sound is heard, it is dang erous to drive the vehicle at high speeds, or
perform sudden maneuver ing or braking. Vehicle drivabilit y could worsen and result in an
accident.
To determine if you have a slow leak or a flat, 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 situa‐
tion that could lead to tire failure and a dangerous accident.
(Amber)
KEY Warning Indi‐
cation
*
“Keyless System Malfunction” 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 indicato r light (amber) flashes, the en‐
gine may not start. If the engine cannot be started, try starting it using the emergency oper‐
ation for starting the engine, and have the vehicle inspected at an Authorized Mazda Deal‐
er as soon as possible.
Refer to Emergency Operation for St arting the Engine on page 4-10.
“Ignition is On” is displayed
This message is displayed when the driver's door is opened with out switching the ignition
off.
“Key Not Detected” is displayed
This message is displayed when any of the following operations is performed with the key
out of the operational range or placed in areas inside the cabi n where it is difficult for the
key to be detected.
The push button start is pressed with the ignition switched offThe ignition is switched onAll doors are closed without switching the ignition off
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-30*Some models.
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SignalWarning
Lane-keep Assist
System (LAS) &
Lane Departure
Wa r n i n g S y s t e m
(LDWS) Warning
Indication
*
The message is displayed when the system has a malfunction. Have your vehicle inspect‐
ed at an Authorized Mazda Dealer.
The system does not operate when the warning message is displayed.
CAUTION
Always use tires for all wheels that are of the specified size, and the same manufacture,
brand, and tread pattern. In addition, do no t use tires with significantly different wear
patterns on the same vehicle. If such improper tires are used, the system may not operate
normally.
 When an emergency spare tire is used, the system may not operate normally.
LED Headlight
Warning Light 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
(Amber)
Smart Brake Support/
Smart City Brake Sup‐ port (SBS/SCBS)
Warning Indication/
Wa r n i n g L i g h t
*
The light turns on if the windshield or the
radar sensor are dirty, or there is a malfunc‐
tion in the system. Verify the reason why the warning light is
illuminated on the center display.
If the reason why the warning light is illu‐
minated is due to a dirty windshield, clean
the windshield.
If the warning light is illuminated because
of a dirty radar sensor, clean the front em‐
blem.
For any other reasons, have the vehicle in‐
spected at an Authorized Mazda Dealer.
Low Fuel Warning In‐
dication/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 driving conditions
and the vehicle posture. Add fuel.
Check Fuel Cap Warn‐
ing Indication/Warning Light If the check fuel cap warning light illumi‐
nates while driving, the fuel-filler cap may
not be installed properly.
Stop the engine and reinstall the fuel-filler
cap.
Refer to Refueling on page 3-30.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-32*Some models.
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