check engine MAZDA MODEL 6 2021 Owners Manual

Keyless Entry System
This system uses the key buttons to
remotely lock and unlock the doors, and
opens the trunk lid.
The system can start the engine without
having to take the key out of your purse or
pocket.
It can also help you s ignal for attention or
help.
Operating the theft-deterrent system is
also possible on theft-deterrent
system-equipped vehicles.

System malfunctions or warnings are
indicated by the fo llowing warning lights
or beeps.
For vehicles with t he type A/type B
instrument cluster, check the displayed
message for more i nformation and, if
necessary, have the vehicle inspected at an
Authorized Mazda Dealer, according to
the indication.
KEY Warning Light (Red)
Refer to Contact Authorized Mazda
Dealer and Have Vehicle Inspected on
page 7-28.
Refer to Taking Action on page 7-35.
Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched Off
(STOP) Warning Beep on page 7-46.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-46.
If you have a problem with the key,
consult an Authorized Mazda Dealer.

If your key is lost or stolen, consult an
Authorized Mazda Dealer as soon as
possible for a replacement and to make the
lost or stolen key inoperative.
CAUTION
Radio equipment like this is governed by
laws in the United States.
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user's authority
to operate the equipment.
NOTE
The keyless entry system operation may
vary due to local conditions.
The keyless entry system is fully
operational (door lock/unlock) when the
ignition is switched off. The system does
not operate if the ignition is switched to
any position other than off.
If the key does not operate when
pressing a button or the operational
range becomes too small, the battery
may be weak. To install a new battery,
refer to Key Battery Replacement (page
6-41).
Before Driving
Keys
3-4
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

▼Emission Control System (SKYACTIV-G 2.5, SKYACTIV-G 2.5T)
This vehicle is equipp
ed with an emission co ntrol system (the catalytic converter is part of
this system) that enables the ve hicle to comply with existing exhaust emissions
requirements.
WARNING
Never park over or near anything flammable:
Parking over or near anything flammable, such as dry grass, is dangerous. Even with the
engine turned off, the exhaust system remains very hot after normal use and could ignite
anything flammable. A resulting fire could cause serious injury or death.
CAUTION
Ignoring the following precautions could cause lead to accumulate on the catalyst inside the
converter or cause the converter to get very hot. Either condition will damage the converter
and cause poor performance.
 USE ONLY UNLEADED FUEL.
 Do not drive your Mazda with any sign of engine malfunction.
 Do not coast with the ignition switched off.
 Do not descend steep grades in ge ar with the ignition switched
off.
 Do not operate the engine at high idle for more than 2 minutes.
 Do not tamper with the emission control system. All inspections and adjustments must be
made by a qualified technician.
 Do not push-start or pull-start this vehicle.
NOTE
Under U.S. federal law, any modification to the original-equipment emission control
system before the first sale and registration of a vehicle is subject to penalties. In some
states, such modification made on a used vehicle is also subject to penalties.
While the engine is off, the sound of a valve opening and closing can be heard at the rear
of the vehicle, however this does not indicate an abnormality. The vehicle has a
self-checking device and it operates while the engine is off.
Before Driving
Fuel and Emission
3-23
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

Fuel-Filler Lid and Cap
WARNING
When removing the fuel-filler cap, loosen
the cap slightly and wait for any hissing to
stop, then remove it:
Fuel spray is dangerous. Fuel can burn skin
and eyes and cause illness if ingested. Fuel
spray is released when there is pressure in
the fuel tank and the fuel-filler cap is
removed too quickly.
Before refueling, stop the engine, and
always keep sparks and flames away from
the filler neck:
Fuel vapor is dangerous. It could be ignited
by sparks or flames causing serious burns
and injuries.
Additionally, use of the incorrect fuel-filler
cap or not using a fuel-filler cap may result
in a fuel leak, which could result in serious
burns or death in an accident.
Do not continue refueling after the fuel
pump nozzle shuts off automatically:
Continuing to add fuel after the fuel pump
nozzle has shut off automatically is
dangerous because overfilling the fuel tank
may cause fuel overflow or leakage. Fuel
overflow and leakage could damage the
vehicle and if the fuel ignites it could cause
a fire and explosion resulting in serious
injury or death.
CAUTION
Always use only a genuine Mazda fuel-filler
cap or an approved equivalent, available
at an Authorized Mazda Dealer. The wrong
cap can result in a serious malfunction of
the fuel and emission control systems.
(SKYACTIV-G 2.5 and SKYACTIV-G 2.5T for
U.S.A. and Canada)
It may also cause the check engine light in
the instrument cluster to illuminate.
▼ Refueling
Before refueling, close all the doors,
windows, and the trunk lid, and switch the
ignition OFF.
1. To open the fuel-filler lid, pull the
remote fuel-filler lid release.

Remote fuel-filler
lid release
2. To remove the fuel-filler cap, turn itcounterclockwise.
Before Driving
Fuel and Emission
3-27
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

3. Attach the removed cap to the innerside of the fuel-filler lid.

Fuel-filler lid
Fuel-filler cap
4. Insert the refueling nozzle all the wayand begin refueling. Pull out the
refueling nozzle a fter the refueling
stops automatically.
5. To close the fuel-filler cap, turn it
clockwise until a click is heard.
6. To close, press the fuel-filler lid until it locks securely.

CAUTION
(SKYACTIV-G 2.5 and SKYACTIV-G 2.5T for
U.S.A. and Canada)
If the check fuel cap warning light
illuminates, the fuel-filler cap may not be
properly installed. If the warning light
illuminates, park your vehicle safely off the
right-of-way, remove the fuel-filler cap and
reinstall it correctly. After the cap has been
correctly installed, the fuel cap warning
light may continue to illuminate until a
number of driving cycles have been
completed. A drive cycle consists of starting
the engine (after four or more hours with
the engine off) and driving the vehicle on
city and highway roads.
Continuing to drive with the check fuel cap
warning light illuminated could cause the
check engine light to illuminate as well.
Before Driving
Fuel and Emission
3-28
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

NOTE
The keys carry a unique electronic code.
For this reason, and to assure your
safety, obtaining a replacement key
requires some waiting time. They are
only available through an Authorized
Mazda Dealer.
Always keep a spare key in case one is
lost. If a key is lost, consult an
Authorized Mazda Dealer as soon as
possible.
If you lose a key, an Authorized Mazda
Dealer, will reset the electronic codes of
your remaining keys and immobilizer
system. Bring all the remaining keys to
the Authorized Mazda Dealer to reset.
Starting the vehicle with a key that has
not been reset is not possible.
▼ Operation
NOTE
The engine may not start and security
indicator light may illuminate or flash if
the key is placed in an area where it is
difficult for the system to detect the
signal, such as on the dashboard or in
the glove compartment. Move the key to
a location within the signal range,
switch the ignition off, and then restart
the engine.
Signals from a TV or radio station, or
from a transceiver or mobile telephone
could interfere with your immobilizer
system. If you are using the proper key
and the engine fails to start, check the
security indicator light.
Arming
The system is armed when the ignition is
switched from ON to off.
The security indica
tor light in the
instrument cluster flashes every 2 seconds
until the system is disarmed.

Disarming
The system is disarmed when the ignition
is switched ON with the correct
programmed key. The security indicator
light illuminates for about 3 seconds and
then turns off. If the engine does not start
with the correct key, and the security
indicator light remains illuminated or
flashing, try the following:
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 Authorized
Mazda Dealer.
NOTE
If the security indicator light flashes
continuously while you are driving, do
not shut off the engine. Go to an
Authorized Mazda Dealer, and have it
checked. If the engine is shut off while
the indicator light is flashing, you will
not be able to restart it.
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 Authorized Mazda
Dealer, so that they can be programmed.
Before Driving
Security System
3-41
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

Rocking the Vehicle
WA R N I N G
Do not spin the wheels at more than 56
km/h (35 mph), and do not allow anyone
to stand behind a wheel when pushing the
vehicle:
When the vehicle is stuck, spinning the
wheels at high speed is dangerous. The
spinning tire could overheat and explode.
This could cause serious injuries.
CAUTION
Too much rocking may cause engine
overheating, transaxle failure, and tire
damage.
If you must rock the vehicle to free it from
snow, sand or mud, depress the accelerator
slightly and slowly move the selector lever
from D to R position.
Winter Driving
Carry emergency gear, including tire
chains, window scraper, flares, a small
shovel, jumper cables, and a small bag of
sand or salt.
Ask an Authorized Mazda Dealer to check
the following:
Have the proper ratio of antifreeze in the
radiator.
Refer to Engine Coolant on page 6-26.
Inspect the battery and its cables. Cold
reduces battery capacity.
Use an engine oil appropriate for the
lowest ambient temperatures that the
vehicle will be driven in (page 6-22).
Inspect the ignition system for damage
and loose connections.
Use washer fluid made with
antifreeze―but do not use engine
coolant antifreeze for washer fluid (page
6-29).
NOTE
Remove snow before driving. Snow left
on the windshield is dangerous as it
could obstruct vision.
Do not apply excessive force to a
window scraper when removing ice or
frozen snow on the mirror glass and
windshield.
Never use warm or hot water for
removing snow or ice from windows and
mirrors as it could result in the glass
cracking.
Before Driving
Driving Tips
3-46
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

5. Press the push button start to start theengine.
NOTE
The engine cannot be started unless
the brake pedal is fully depressed.
If there is a malfunction with the
push button start function, the push
button start indica tor light (amber)
flashes. In this ca se, the engine may
start, however, have the vehicle
checked at an Authorized Mazda
Dealer as soon as possible.
If the push button start indicator
light (green) does not illuminate,
perform the operation from the
beginning again. If it does not
illuminate, have the vehicle checked
at an Authorized Mazda Dealer.
To switch the ignition position
without starting the engine, perform
the following operations after the
push button start indicator light
(green) turns on.
1. Release the brake pedal.
2. Press the push button start to switch the ignition position. The
ignition switches in the order of
ACC, ON, and off each time the
push button start is pressed. To
switch the ignition position
again, perform the operation
from the beginning.
▼Emergency Operation for Starting
the Engine
If the KEY warning ligh
t (red) illuminates,
or the push button start indicator light
(amber) flashes, this could indicate that
the engine may not s tart using the usual
starting method (for vehicles with a type
A/type B instrument cluster (page 7-25),
messages are displayed in the instrument
cluster). Have your vehicle inspected at an
Authorized Mazda Dealer as soon as
possible. If this occurs , the engine can be
force-started. Press and hold the push
button start until the engine starts. Other
procedures necessary for starting the
engine such as having the key in the cabin,
and depressing the brake pedal are
required.
When Driving
Start/Stop Engine
4-10
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

SignalWarning Page
Master Warning Indication 7-28
Electric Parking Brake (EPB) Warning Indication/Warning Light*17-28
Check Engine Light*17-28
*Selective Catalytic Reduction (SCR) system Warning Indication/W arning
Light*17-28
Automatic Transaxle War ning Indication 7-28
*AWD Warning Indication 7-28
Air Bag/Front Seat Belt Pretensioner System Warning Light*17-28
Tire Pressure Monitoring System Warning Light*1
Flashing
7-28
Turns on 7-35
(Amber/White) KEY Warning Indication Amber
7-28
White 7-35
(Amber) High Beam Control System (HBC) Warning Indication/Warning Light
*17-28
Blind Spot Monitoring (BSM)
Warning Indication 7-28
(Amber)Driver Attention Alert (D
AA) Warning Indication 7-28
(Amber)
*Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop
& Go function) War ning Indication 7-28
(Amber)Lane-keep Assist System (LAS) & Lane Departure Warning System
(LDWS) Warning Indication
7-28
LED Headlight Warning Light*17-28
*Smart Brake Support/Smart City B
rake Support (SBS/SCBS) Warning In‐
dication 7-35
When Driving
Instrument Cluster and Display
*Some models.4-27
Mazda6_8JN3-EA-20H_Edition1_old
2020-6-18 17:31:27

SignalWarning Page
Low Fuel Warning Indication/Warning Light 7-35
Check Fuel Cap Warning Indication/Warning Light*17-35
Engine Oil Level Warning Light*17-35
Seat Belt Warning Light (Front seat) 7-35
(Red)Seat Belt Warning Light (Rear seat) 7-35
Low Washer Fluid Level Warning Indication
7-35
Door-Ajar Warning Indication7-35
Trunk lid-Ajar Warning Indication 7-35
Door-Ajar Warning Light7-35
*1 The light turns on when the ignition is switched on for an operation 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 Dealer.
*2 The light turns on continuously when the parking brake is applied.
When Driving
Instrument Cluster and Display
4-28
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27

SignalIndicator Page
*Smart Brake Support/Smart City Brake Support (SBS/SCBS) OFF Ind ica‐
tor Light*1
Advanced Smart City Brake Sup‐ port (Advanced
SCBS)4-177
Smart City
Brake Support [Reverse]
(SCBS R) 4-185
Smart Brake
Support (SBS) System4-187
(White)
*Cruise Main Indication 4-228
(Green)
*Cruise Set Indication4-228
*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.
When Driving
Instrument Cluster and Display
*Some models.4-31
Mazda6_8JN3-EA-20H_Edition1_old 2020-6-18 17:31:27