2019 MAZDA MODEL CX-30 check engine

Overheating
▼Overheating
If the engine coolant temperature
gauge indicates overheating and the
high engine coolant temperature
warning indication is displayed, the
vehicle loses power or you hear a loud
knocking or pinging noise, the engine
is probably too hot.
WARNING
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 bonnet 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 engine coolant temperature
gauge indicates overheating and the
high engine coolant temperature
warning indication is displayed:

1. Drive safely to the side of the road
and park off the right-of-way.
2. Put a vehicle with an automatic
transmission in park (P), a manual
transmission 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 bonnet and start the
engine.

If neither coolant nor steam is
escaping:
Open the bonnet 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 expert
repairer (we recommend an
Authorised Mazda Repairer).
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 Trouble Arises
Overheating
7-44

If a Warning Light Turns
On or Flashes
▼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, however if the light does not turn
off or turns
on/flashes again, consult
an expert repairer (we recommend an
Authorised Mazda Repairer).
The details for some warnings can be
viewed on the centre display or
multi-information display in the
instrument cluster.
Centre display
1. Select “Information” on the home
screen.
2. Select “Vehicle Status Monitor”.
3. Select the applicable warning to
view the warning details.
NOTE
You can also display the currently
occurring warning by sliding the
commander knob to the left while on
the home screen of the centre display.
Multi-information display
1. Press the INFO switch on the
steering switch to display the
warning indication screen.
Refer to Multi-information Display
on page 4-23.
▼Brake System Warning Indication/
Warning Light (Red)
This warning has the following
functions:
Warning light inspection
For an operation check, make sure that
the light turns on when the ignition is
switched on, and turns off a few
seconds later or when the engine is
started.
When the light turns on
If the brake system warning light
remains illuminated the brake 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 expert repairer (we
recommend an Authorised Mazda
Repairer).
Refer to Inspecting Brake/Clutch Fluid
Level on page 6-30.
WARNING
Do not drive with the brake system
warning light illuminated. Contact an
expert repairer (we recommend an
Authorised Mazda Repairer) 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
¾In 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.
¾(With M Hybrid)
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-49

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 sump.
3. Inspect the engine oil level (page
6-27). If it's low, add the
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 expert repairer (we
recommend an Authorised Mazda
Repairer).
▼High Engine Coolant Temperature
Warning Indication
Displays if the engine coolant
temperature has increased excessively.
“Elevated Engine Coolant Temp. Drive
Slowly” displayed
Drive slowly to reduce engine load
until you can find a safe place to stop
the vehicle and wait for the engine to
cool down.
“Excessive Engine Coolant Temp. Stop
the Vehicle in a Safe Location”
displayed
This indicates the possibility of
overheating. Park the vehicle in a safe
place immediately and stop the
engine.
Refer to Overheating on page 7-44.
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
Indication/Indicator Light
The message is displayed if the electric
power steering has a malfunction.
If the message is displayed, stop the
vehicle in a safe place and do not
operate the steering wheel. There is no
problem if the indication turns off
when the engine is restarted after
some time has passed. If the indication
displays even after the engine is
restarted, contact an expert repairer
(we recommend an Authorised Mazda
Repairer) if the message is displayed
continuously.
NOTE
xIf the message is displayed, the
power steering will not operate
normally. In this case, the steering
wheel can still be operated,
however, the operation may feel
heavy compared to normal, or the
steering wheel could vibrate when
turning.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-51

xRepeatedly 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.
▼ABS Warning Indication/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 expert
repairer (we recommend an
Authorised Mazda Repairer) as soon as
possible.
NOTE
xWhen 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.
xThe brake assist system does not
operate while the ABS warning light
is illuminated.
▼Master Warning Indication
The indication displays if the system
has a malfunction.
Check the reason for the indication
displaying on the centre display or
multi-information display.
Refer to If a Warning Light Turns On or
Flashes on page 7-49.
▼Brake Control System Warning
Indication/Warning Light (Amber)
The warning light illuminates when the
system has a malfunction. Have your
vehicle inspected at an expert repairer
(we recommend an Authorised Mazda
Repairer).
▼Electric Parking Brake (EPB)
Indication/Indicator Light
This warning has the following
functions:
Parking brake warning/Indicator light
inspection
The light illuminates when the parking
brake is applied with the ignition
switched to START or ON. It turns
off
when the parking brake is released.
When the light is
flashing
The light flashes if the Electric Parking
Brake (EPB) has a malfunction. If the
light remains flashing even if the
Electric Parking Brake (EPB) switch is
operated, consult an expert repairer
(we recommend an Authorised Mazda
Repairer) as soon as possible.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-52

▼Brake Override Warning Indication
This message is displayed when the
accelerator pedal and brake pedal are
depressed at the same time while
driving.
Release the accelerator pedal and
depress the brake pedal.
▼Check Engine Indication/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 expert repairer (we
recommend an Authorised Mazda
Repairer).
The check engine light may illuminate
in the following cases:
xThe engine's electrical system has a
problem.
xThe emission control system has a
problem.
x(Except SKYACTIV-D 1.8)
xThe fuel tank level being very low
or approaching empty.
xThe
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 expert
repairer (we recommend an
Authorised Mazda Repairer) as soon as
possible.
WARNING
If the check engine light turns on, do
not disconnect the battery leads.
If the battery leads are disconnected
and then reconnected, the engine
could be damaged and catch on
fire.
▼i-stop Warning Indication/
Warning Light (Amber)*
When the light is turned on
xA problem in the system may be
indicated under the following
conditions. Have your vehicle
inspected at an expert repairer (we
recommend an Authorised Mazda
Repairer).
xThe light does not turn on when
the ignition is switched ON.
x(Except European model)
If the i-stop warning light (amber)
remains on while the engine is
running , the battery performance
may have decreased. Have your
vehicle inspected at an expert
repairer (we recommend an
Authorised Mazda Repairer).
When the light is flashing
The light continues to flash if the
system has a malfunction. Have your
vehicle inspected at an expert repairer
(we recommend an Authorised Mazda
Repairer).
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.7-53

▼KEY Warning Indication/Warning
Light (Red)
“Keyless Entry System Malfunc. Have
the Vehicle Inspected” is displayed
This message is displayed if the
advanced keyless entry & push button
start system has a problem.
Contact an expert repairer (we
recommend an Authorised Mazda
Repairer).
CAUTION
If the message is indicated, 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 expert repairer
(we recommend an Authorised Mazda
Repairer) as soon as possible.
Refer to Emergency Operation for
Starting the Engine on page 4-9.
“Key Not Detected” is displayed
xIf the presence of the key cannot be
detected (dead battery, battery
malfunction, no key), it is displayed
when the driver attempts to start the
engine (push button start operation,
brake pedal depression).
xDisplayed when it is determined that
a key that was in the vehicle has
been removed from the vehicle. (Key
taken out warning. Other than
IG-OFF).
▼Security Indicator Light
If the security indicator light flashes
continuously while you are driving, do
not shut
off the engine. Go to an
expert repairer (we recommend an
Authorised Mazda Repairer) and have
it checked. If the engine is shut off
while the indicator light is
flashing , you
will not be able to restart it.
Make sure the key is within the
operational range for signal
transmission. Switch the ignition off,
and then restart the engine. If the
engine does not start after 3 or more
tries, contact an expert repairer (we
recommend an Authorised Mazda
Repairer).
NOTE
Because the electronic codes are reset
when the immobilizer system is
repaired, the keys are needed. Make
sure to bring all the keys to an
Authorised Mazda Repairer so that
they can be programmed.
▼AWD Warning Indication/
Warning Light*
“AWD Malfunction. Front Wheel
Drive Only. Have the Vehicle
Inspected” is displayed/When the
light is turned on
The indication is displayed/the light
turns on under the following
conditions. The system may have a
malfunction. Have the vehicle checked
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-56*Some models.

Display*1*2Content Action to be taken
Depress Brake Pedal to
Start EngineThis message is indicated when the
push button start is pressed without
depressing the brake pedal.When starting the engine, press the
push button start with the brake ped-
al depressed.
Depress Clutch Pedal to
Start EngineThis message is indicated when the
push button start is pressed without
depressing the clutch pedal.When starting the engine, press the
push button start with the clutch
pedal depressed.
Press Push Button Start
Switch While Turning
Steering Wheel Left or
RightThis message is indicated while the
steering wheel is locked.Release the steering wheel lock by
pressing the start button while turn-
ing the steering wheel to the left and
right.
Check Gear Selector
Lever PositionThis message is indicated when the
selector lever is shifted to the P or R
position while driving.Check the selector lever position.
Close Door and Fasten
Seat BeltThis message is indicated when AU-
TOHOLD is about to operate and a
door is opened or a seat belt is unfas-
tened.When the AUTOHOLD is turned on,
close the doors and fasten seat belts.
Wiper Blades Must Be
on Windscreen Before
OperatingThis message is indicated when the
ignition is switched ON with the wip-
er arms at the service positions.Return the wiper arms to the initial
positions.
Windscreen Wiper
Range of Motion Re-
duced. Remove Ob-
struction(s)This message is indicated when there
is snow or dirt accumulation on the
windscreen and the wiper operation
range is narrowed.Remove foreign matter from the
windscreen.
Ignition Not Switched
OffThis message is indicated when the
driver’s door is opened without
switching the ignition OFF.Switch the ignition OFF before leaving
the vehicle.
Gear Selector Lever Not
in ParkDisplays when the push button start
is pressed while the selector lever is
in a position other than P, and the ig-
nition is switched to ACC.Shift the selector lever to the P posi-
tion and then switch the ignition OFF.
Excessive Transmission
Temperature. Drive
SlowlyThis message is indicated when the
internal temperature of the automatic
transmission is high.Drive slowly to reduce load on the
automatic transmission.
Excessive Transmission
Temperature. Stop Vehi-
cle in a safe LocationThis message is indicated when the
automatic transmission
fluid temper-
ature is abnormally high.Park the vehicle in a safe place imme-
diately and contact an expert repairer
(we recommend an Authorised Maz-
da Repairer).
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-65

perform the applicable procedure
(page 3-8).
▼Power Liftgate Warning Beep*
If system operation precautions are
necessary, the driver is notified by the
warning sound.
Warning beep What to check
The beep sounds 3
timesThe conditions re-
quired for the power
liftgate to operate have
not been met, such as
an object being stuck
in the liftgate.
The beep sound con-
tinuesThe vehicle is being
driven with the liftgate
open. Stop the vehicle
and close the liftgate.
▼Low Fuel Warning Beep
When the low fuel warning light
flashes, a warning beep is activated
once at the same time.
▼Electronic Steering Lock Warning
Beep
The warning beep operates if the
steering wheel is not unlocked after the
push button start is pressed. (page
4-4)
▼Brake System Warning Beep (With
M Hybrid)
A warning beep is activated if a
problem with the brake system occurs
and the brakes may not work as
intended. Decelerate the vehicle while
checking the safety of the surrounding
area, and park the vehicle in a safe
place. After stopping the vehicle,
contact an expert repairer (we
recommend an Authorised Mazda
Repairer).
▼Brake Override Warning Beep
A warning beep is activated when the
accelerator pedal and brake pedal are
depressed at the same time while
driving. Only depress the brake pedal.
▼Vehicle Problem Warning Beep
If any of the following problems occur,
a warning beep is activated. Check the
information regarding the warning
indication in the instrument cluster or
on the centre display.
xAutomatic transmission problemxIncrease in automatic transmission
internal temperature
xM Hybrid problemxBrake fluid amount decreasexEngine oil level sensor problemxElectric Parking Brake (EPB) problemxEngine hydraulic pressure decreasexEngine coolant temperature increasexEngine system problem
▼Shift Position Warning Beep
A sound is activated when the push
button start is pressed while the
selector lever is in a position other
than P, and the ignition is switched to
ACC. Check the selector lever
position.
▼Ignition Not Off Reminder
Warning Beep (With M Hybrid)
A warning beep is activated
continuously if the driver's door is
opened with the selector lever in a
position other than the P or N
position. Shift the selector lever to the
P or N position, or close the driver's
door.
▼i-stop Warning Beep*
xIf the driver's door is opened while
engine idling is stopped, the warning
sound operates to notify the driver
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.7-69