check engine MAZDA MODEL 3 HATCHBACK 2020 (in English) User Guide

SignalIndicator Refer to
(Green)
*High Beam Control System (HBC) Indicator Light 4-89
(White)
*Mazda Radar Cruise Control (MRCC) Standby Indication
4-122
*Mazda Radar Cruise Control with
Stop & Go function (MRCC with Stop
& Go function) Standby Indication 4-131
*Traffic Jam Assist (TJA) Standby Indication
4-143
(Green)
*Mazda Radar Cruise Control (MRCC) Set Indication4-122
*Mazda Radar Cruise Control with
Stop & Go function (MRCC with Stop
& Go function) Set Indication 4-131
*Traffic Jam Assist (TJA) Set Indication
4-143
*Smart Brake Support (SBS) OFF Indicator Light*1
Smart Brake
Support (SBS) 4-157
Smart Brake
Support [Rear] (SBS-R)
4-160
Smart Brake
Support [Rear Crossing]
(SBS-RC) 4-165
(White)
*Cruise Standby Indication 4-212
(Green)
*Cruise Set Indication4-212
*1 The light turns on when the ignition is switched on for an ope
ration check, and turns off
a few seconds later or when the engine is started. If the light does not turn on or remains
turned on, have the vehicle inspected at an Authorized Mazda De aler.
*2 The light turns on continuously when the parking brake is appl ied.
When Driving
Instrument Cluster and Display
*Some models.4-27
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Shift-Lock System
▼Shift-Lock System
The shift-lock system p
revents shifting out
of P unless the brake pedal is depressed.

To shift from P:
1. Depress and hold the brake pedal.
2. Start the engine.
3. Press and hold the lock-release button.
4. Move the selector lever.
NOTE
When the ignition is switched to ACC or
the ignition is switched off, the selector
lever cannot be shifted from P position.
The ignition cannot be switched to OFF
if the selector lever is not in P position.
▼ Shift-Lock Override
If the selector lever will not move from P
position using the proper shift procedure,
continue to hold down the brake pedal.
1. Remove the shift-lock override cover
using a cloth-wrapped flat head
screwdriver.
2. Insert a flat screwdriver and push it down.

1. Cover

3. Press and hold the lock-release button.
4. Move the selector lever.
Take the vehicle to an Authorized Mazda
Dealer to have the system checked.
When Driving
Automatic Transmission
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▼Setting the System
The MRCC with Stop & Go function
system operates when all of the following conditions
are met.
Vehicle speed is 0 km/h (0 mph) to 145 km/h (90 mph)
The MRCC with Stop & Go function is turned on.
The brake pedal is not depressed.
The parking brake is released (E lectric Parking Brake (EPB) indicator light is turned off).
There is no problem with the DSC.
All the doors are closed.
The driver's seat belt is fastened.
The selector lever is in the drive (D) position or manual (M) p osition (manual mode).
NOTE
In the following cases, the MRCC with Stop & Go function system is canceled when the
vehicle is traveling at 30 km/h (20 mph) or less and “Mazda Radar Cruise Control
Disabled Under 30 km/h (20mph)” is displayed in the multi-information display.
The Forward Sensing Camera (FSC) cannot de tect target objects (There is problem
with the Forward Sensing Camera (FSC) or windshield is dirty).
There is a problem with the stop hold control function.
There is a problem with the Electric Parking Brake (EPB).
When the MRCC with Stop & Go function system is operating, Distance & Speed Alert
(DSA), and Smart Brake Support (SBS) also turns on automatically.
It may not be possible to set the MRCC with Stop & Go f unction system directly after
starting the engine, while the DSC operation is being checked.
Turning on the system
1. CANCEL switch
2. RES switch
3. MRCC switch

When Driving
i-ACTIVSENSE
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Operating Tips
▼Operating Tips
Operate the climate control system with
the engine running.
To prevent the battery from being
discharged, do not leave the fan control
switch on for a long
period of time with
the ignition switched ON when the
engine is not running.
Clear all obstructions such as leaves,
snow and ice from the hood and the air
inlet in the cowl grille to improve the
system efficiency.
Use the climate control system to defog
the windows and dehumidify the air.
The recirculate mode should be used
when driving through tunnels or while
in a traffic jam, or when you would like
to shut off outside air for quick cooling
of the interior.
Use the outside air position for
ventilation or windshield defrosting.
If the vehicle has been parked in direct
sunlight during hot weather, open the
windows to let warm air escape, then
run the climate control system.
(With A/C switch)
Run the air conditioner about 10
minutes at least once a month to keep
internal parts lubricated.
Have the air conditioner checked before
the weather gets hot. Lack of refrigerant
may make the air conditioner less
efficient.
The refrigerant specifications are
indicated on a label attached to the
inside of the engine compartment. If the
wrong type of refrigerant is used, it
could result in a ser ious malfunction of
the air conditioner. Consult a
professional, government certified
repairer for the inspection or repair
because a special device is required for
the air conditi oner maintenance.
For details, consult an Authorized
Mazda Dealer.
1. Label
Interior Features
Climate Control System
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Maintenance ItemNormal Driving Scheduled Maintenance Intervals
1st 2nd 3rd 4th 5th 6th 7th 8th
Brake and clutch fluid level IIIIIIII
Brake fluid With electrical
boosterRRRR
Disc brakes IIIIIIII
Tire rotation Rotate every 16,000 km (10,000 miles).
Tire inflation pressure and tire wear
*4IIIIIIII
Steering operation and linkages I I I I
Front and rear suspension, ball joints and wheel
bearing axial play IIII
Rear differential oil
*5
Transfer oil*5
Driveshaft dust boot II II
Bolts and nuts on chassis and body TTTT
Exhaust system and heat shields II
Emergency flat tire repair kit (if installed)
*6Inspect annually.
Cabin air filter Replace every 48 ,000 km (30,000 miles) or 24 months.
Function of all lights IIIIIIII
Chart symbols:
I: Inspect: Inspect and clean, repair, adjust, fill up, or replace if necessary.
R: Replace
T: Ti g h t e n
Remarks:
*1 Reset the engine oil data whene ver replacing the engine oil regardless of the message/wrench indicator light
display.
*2 Use of FL-22 is recommended wh en replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*3 According to state/provincial and federal regulations, failure to perform maintenance on these items will not void your emissions warranties. However, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/ kilometer period to ensure long-term reliability.
*4 Inspect a spare tire if installed.*5 If this component has been subm erged in water, the oil should be replaced.*6 Check the tire repair fluid exp iration date every year when performing the periodic maintenance. Replace the
tire repair fluid bottle with new one before the expiration date.
Maintenance and Care
Scheduled Maintenance
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Remarks:
*1 Reset the engine oil data whenever replacing the engine oil regardless of the message/wrench indicator light
display.
*2 If you drive your vehicle under any of the following condition s, replace the engine oil & filter every 8,000 km
(5,000 miles) or 6 months, whichever comes first.
1. The vehicle is idled for long periods or driven at low speeds , such as with police cars, taxis, or driver's
education school vehicles.
2. Driving under dusty conditions.
3. Driving for long periods in cold temperatures or driving regu larly for short distances only.
4. Driving under extremely high temperature conditions.
5. Driving continuously in mountainous regions.
*3 Also inspect the air conditioner drive belts, if installed. If the vehicle is operated primarily under any of the following conditions, inspect the drive belts more often
than the recommended intervals.
a) Driving under dusty conditions.
b) The vehicle is idled for long periods or driven at low speeds.
c) Driving for long periods in cold temperatures or driving regu larly for short distances only.
d) Driving under extremely high temperature conditions.
e) Driving continuously in mountainous regions.
f) Driving for long period in extremely wet or heavy rain condit ion.
*4 Use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*5 According to state/provincial and federal regulations, failure to perform maintenance on these items will not
void your emissions warranties. H owever, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/kilometer period to ensure long -term reliability.
*6 Inspect a spare tire if installed.*7 If this component has been submerged in water, the oil should be replaced.*8 Check the tire repair fluid expiration date every year when performing the periodic maintenance. Replace the
tire repair fluid bottle with a ne w one before the expiration date.
▼Scheduled Maintenance (Mexico)
Vehicles utilizing the vehicle status monitor feature:
The vehicle status monitor featur
e alerts you of maintenance needs by turning on the wrench
indicator light or displaying a message in the instrument panel , or both.
Every maintenance must be done when the display/wrench indicati on comes on. The dis‐
play/wrench indication will come on before reaching the maximum interval of 10,000 km,
or 6 months (after the previous maintenance).
If you drive your vehicle under any of the following conditions , follow the Severe Driving
Scheduled Maintenance and replace the engine oil and filter eve ry 5,000 km or 3 months,
whichever comes first.
Otherwise, follow the Normal Driving Scheduled Maintenance inte rvals.
1. The vehicle is idled for long periods or driven at low speeds , such as with police cars,
taxis, or driver's education school car.
2. Driving under dusty conditions.
3. Driving for long periods in co ld temperatures or driving regularly for short distances on‐
ly.
Maintenance and Care
Scheduled Maintenance
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Chart symbols:
I: Inspect: Inspect and clean, repair, adjust, fill up, or repl ace if necessary.
R: Replace
T: Tighten
Remarks:
*1 Reset the engine oil data whenever replacing the engine oil re gardless of the message/wrench indicator light
display.
*2 Use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*3 According to state/provincial and federal regulations, failure to perform maintenance on these items will not
void your emissions warranties. H owever, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/kilometer period to ensure long -term reliability.
*4 Inspect a spare tire if installed.*5 Check the tire repair fluid expiration date every year when performing the periodic maintenance. Replace the
tire repair fluid bottle with ne w one before the expiration dat e.
Mexico Residents (Severe Dri ving Scheduled Maintenance):
Number of months or kilometers , whichever comes first.
Months 3 6 9 1215182124
× 1000 km 5 10 15 20 25 30 35 40
Engine oil & filter
*1RRRRRRRR
Maintenance Interval (other than engine
oil & filter replacement)
*21st 2nd 3rd4th
Chart symbols:
R: Replace
Remarks:
*1 Reset the engine oil data whenever replacing the engine oil re gardless of the message/wrench indicator light
display.
*2 Follow Maintenance Interval lis ted in Normal Driving Scheduled Maintenance.
Maintenance and Care
Scheduled Maintenance
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If you must run the engine while working
under the hood, make certain that you
remove all jewelry (especially rings,
bracelets, watches, and necklaces) and all
neckties, scarves, and similar loose clothing
before getting near the engine or cooling
fan which may turn on unexpectedly:
Working under the hood with the engine
running is dangerous. It becomes even
more dangerous when you wear jewelry,
loose clothing or have long hair or a long
beard.
Either can become entangled in moving
parts and result in injury.
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 leave items in the engine
compartment:
After you have finished checking or doing
servicing in the engine compartment, do
not forget and leave items such as tools or
rags in the engine compartment.
Tools or other items left in the engine
compartment could cause engine damage
or a fire leading to an unexpected accident.
Hood
▼ Hood
WA R N I N G
Always check that the hood is closed and
securely locked:
A hood that is not closed and securely
locked is dangerous as it could fly open
while the vehicle is moving and block the
driver's vision which could result in a
serious accident.
▼Opening the Hood
1. With the vehicle
parked, pull the
release handle to unlock the hood.

2. Insert your hand into the hood opening, slide the latch lever to the
left, and lift up the hood.


Maintenance and Care
Owner Maintenance
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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.
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 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 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.
If Trouble Arises
Overheating
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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.

If you find a leak or other damage, or if
coolant is still leaking:
Stop the engine and call an Authorized
Mazda Dealer.
1. Cooling system cap
2. Cooling fan
3. Coolant reservoir

If you find no problems, the engine is
cool, and no leaks are obvious:
Carefully add coolant as required (page
6-17).
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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