2021 MAZDA MODEL 6 maintenance

CAUTION
Radiator coolant will damage paint.
Rinse it off quickly if spilled.
 If the “FL22” mark is shown on or near
the cooling system cap, 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.

If the coolant reser voir is empty or new
coolant is required frequently, consult an
Authorized Mazda Dealer.
Brake Fluid
▼ Inspecting Brake Fluid Level
WA R N I N G
If the brake fluid level is low, have the
brakes inspected:
A low brake
fluid level is dangerous.
A low level could indicate brake lining wear
or a brake system leak which could cause
the brakes to fail and lead to an accident.
Inspect the fluid level in the reservoir
regularly. It should be kept between the
MAX and MIN lines.
The level normally drops with
accumulated distance, a condition
associated with wear of brake linings. If it
is excessively low, have the brake system
inspected by an Authorized Mazda Dealer.
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Washer Fluid
▼Inspecting Washer Fluid Level
WARNING
Use only windshield washer fluid or plain
water in the reservoir:
Using radiator antifreeze as washer
fluid is
dangerous. If sprayed on the windshield, it
will dirty the windshield, affect your
visibility, and could result in an accident.
Using Washer Fluid Without Anti-freeze
Protection in Cold Weather:
Operating your vehicle in temperatures
below 4 °C (40 °F) using washer fluid
without anti-freeze protection is dangerous
as it could cause impaired windshield
vision and result in an accident. In cold
weather, always use washer fluid with
anti-freeze protection.
NOTE
State or local regulations may restrict the
use of volatile organic compounds
(VOCs), which are commonly used as
anti-freeze agents in washer fluid. A
washer fluid with limited VOC content
should be used only if it provides adequate
freeze resistance for all regions and
climates in which the vehicle will be
operated.
Inspect fluid level in the washer fluid
reservoir; add fluid if necessary.
L

Use plain water if washer fluid is
unavailable.
But use only washer fluid in cold weather
to prevent it from freezing.
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Diesel Exhaust Fluid
(DEF) (SKYACTIV-D 2.2)
Diesel Exhaust Fluid (DEF) Handling
CAUTION
 If DEF gets in your mouth, wash your
mouth with a large amount of water
immediately and seek medical attention.
If DEF is mistakenly swallowed, drink 1 to
2 cups of water immediately and seek
medical attention.
 If DEF gets in your eyes, rinse them with
running water immediately and seek
medical attention.
 Do not use DEF when 2 years have
elapsed from the production date
indicated on the container or the use
period has expired. If DEF with an expired
use period is used, the Selective Catalytic
Reduction (SCR) System may not operate
normally.
 Do not store DEF in the vehicle. DEF may
deteriorate or the interior may be
damaged due to fluid leakage from the
container.
 If DEF gets on the painted surface or the
interior, wash it off with water or wipe it
off with a wet cloth immediately.
Otherwise, it may damage the painted
surface or the interior.
 If DEF crystals form on the painted
surface or the interior, wipe them off with
a wet cloth. Otherwise, it may damage
the painted surface or the interior.
 Store DEF in a place out of the reach of
children.
Do not put DEF into a
different container.
There may be foreign matter in the
container. If DEF containing foreign
matter is used, it could cause a problem
with the SCR system. In addition,
changing containers is dangerous
because it increases the risk of accidental
ingestion.
NOTE
DEF is a colorless, transparent,
odorless, and nonpoisonous solution
(urea: 32.5 %, aqueous solution
(AUS32)).
Store DEF in a cool, dark place.
DEF freezes at –11 °C (12 °F), however,
when the temperature increases, the
DEF returns to its original condition.
When opening the container, there may
be a smell of ammonia. Open the
container in a well-ventilated area.
If DEF gets on your hands, wash them
with running water immediately.
▼ Diesel Exhaust Fluid (DEF)
Replenishment
CAUTION

Use a Mazda genuine product or a
product conforming to ISO22241-1 for
DEF. If incompatible DEF is used, the
Selective Catalytic Reduction (SCR)
system may not operate normally. For
the recommended DEF, consult the
nearest Authorized Mazda Dealer.
 Do not dilute DEF with water. If diluted
DEF is used, it could cause a problem
with the SCR system or damage it.
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Do not add any
fluid other than DEF to
the urea tank. If any fluid other than DEF
is added, it could cause a problem with
the SCR system or damage it. Do not
switch the ignition ON, and contact an
Authorized Mazda Dealer.
 When adding DEF, use a bottle with an
anti-spill nozzle. If a bottle without an
anti-spill nozzle or a commercial
dispenser at a gas station is used, it could
cause leakage or the DEF to spray out.
 Do not
overfill the DEF. If DEF is added
unnecessarily, it could cause a problem
with the urea tank or damage it. Always
use a bottle with an auto-stop function
and stop adding fluid when the
auto-stop function operates.
NOTE
When adding DEF during low
temperatures (–11 ˚C (12 ˚F) or less),
move the vehicle to a warm location. If
the DEF starts to freeze, it may not flow
correctly and the correct amount may
not have been added. In addition, if the
fluid freezes in the urea tank, you may
not be able to tell if the correct amount
of fluid was added.
Replenishment of DEF by an Authorized
Mazda Dealer is recommended. If you
want to replenish the DEF yourself,
follow the replenishment procedure
below.

Replenishment Procedure
1. Check the remaining amount of Diesel Exhaust Fluid (DEF) on the
multi-information display.
(Instrument cluster (Type A))
Refer to Remaining Diesel Exhaust
Fluid (DEF) and Maximum Driving
Distance Display (SKYACTIV-D 2.2)
on page 4-23.
(Instrument cluster (Type B))
Refer to Remaining Diesel Exhaust
Fluid (DEF) and Maximum Driving
Distance Display (SKYACTIV-D 2.2)
on page 4-41.
5.7 L (1.5 US gal, 1.3 Imp gal) of DEF
or more needs to be added.
NOTE
The replenishment amount (reference)
according to the DEF level (%)
indication is as follows:
Percentage (%) indica ‐
tion for remaining amount Reference replenish
‐
ment amount
*1
100 — 65 Replenishment unneces
‐
sary
60 — 45 About 5.7 L (1.5 US gal,
1.3 Imp gal)
40 — 25 About 7.6 L (2.0 US gal,
1.7 Imp gal)
20 — 0 About 9.5 L (2.5 US gal,
2.1 Imp gal)
*1 Even if DEF is added at the
indicated replenishment amount,
100 % may not be indicated on the
display.

2. Stop the vehicle on level ground.
3. Switch the ignition OFF.
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4. Open the trunk lid and remove thetrunk mat.
Trunk mat
5. Remove the cargo sub-compartment.
Cargo sub-compartment
6. Open the cover.
Cover
7. Open the cap of th e DEF filler port.

Open
Close
8. Remove the cap of a bottle containing DEF, insert the bo ttle into the DEF
filler port, and screw it in lightly until
it stops.

CAUTION
If too much DEF is added, the SCR
system might display a warning.
Contact an Authorized Mazda Dealer if
a warning is displayed. If the warning
remains displayed, the urea tank may
have a problem or it may be damaged.
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NOTE
If excessive force is applied when
pressing in the bottom of the bottle,
the bottle or the DEF filler port may
be damaged.
When the urea tank is full, stop
adding DEF because the flow from
the bottle slows down by the bottle's
auto-stop function. If you continue
adding DEF, the urea tank will
overfill.
9. Press in the bottom of the bottle straight and add DEF.

Push to add
Release to stop
10. Remove the bottle in the reverse order
of the insertion. At this time, be careful
of DEF dripping from the bottle.
11. Tighten the cap of the DEF filler port until you hear 2 or more click sounds.
12. Close the cover securely.
Cover
NOTE
If the cover is not closed securely,
water or exhaust gas from the
service hole may penetrate the trunk.
13. Switch the ignition ON once.
14. Check the following while the vehicle
is stopped.
The DEF level warning indication is
not displayed on the
multi-informat ion display.
The DEF level (%) indication on the
multi-information display shows an
increase.
(Instrument cluster (Type A))
Refer to Remaining Diesel Exhaust
Fluid (DEF) and Maximum Driving
Distance Display (SKYACTIV-D
2.2) on page 4-23.
(Instrument cluster (Type B))
Refer to Remaining Diesel Exhaust
Fluid (DEF) and Maximum Driving
Distance Display (SKYACTIV-D
2.2) on page 4-41.
15. Switch the ignition OFF.
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If the above indications remain
unchanged even after 1 minute has
passed with the vehicle stopped:
If you have already added 5.7 L (1.5 US
gal, 1.3 Imp gal) of DEF according to
the DEF level (%) indication on the
multi-information display, prepare an
additional 5.7 L (1.5 US gal, 1.3 Imp
gal) of DEF or more and add it
following the replenishment procedure.
If you added the correct amount of DEF,
the DEF level (%) indication on the
multi-information display will show an
increase while the vehicle is being
driven. If the DEF level (%) shows no
increase or the speed restriction does not
cancel even while driving the vehicle,
consult an Authorized Mazda Dealer.
Body Lubrication
All moving points of the body, such as
door and hood hinges and locks, should be
lubricated each time the engine oil is
changed. Use a nonfreezing lubricant on
locks during cold weather.

Make sure the hood's secondary latch
keeps the hood from opening when the
primary latch is released.
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Wiper Blades
CAUTION
Hot waxes applied by automatic car
washers have been known to affect the
wiper's ability to clean windows.
 To prevent damage to the wiper blades,
do not use gasoline, kerosene, paint
thinner, or other solvents on or near
them.
 When the wiper lever is in the AUTO
position and the ignition is switched ON,
the wipers may move automatically in
the following cases:
 If the windshield above the rain sensor
is touched.
 If the windshield above the rain sensor
is wiped with a cloth.
 If the windshield is struck with a hand
or other object.
 If the rain sensor is struck with a hand
or other object from inside the vehicle.
Be careful not to pinch hands or fingers
as it may cause injury, or damage the
wipers. When washing or servicing the
vehicle, make sure the wiper lever is in
the OFF position.
Contamination of either the windshield or
the blades with foreign matter can reduce
wiper effectiveness. Common sources are
insects, tree sap, and hot wax treatments
used by some commercial car washes.

If the blades are not wiping properly, clean
the window and blades with a good
cleaner or mild detergent; then rinse
thoroughly with clean water. Repeat if
necessary.
▼ Replacing Windshield Wiper Blades
When the wipers no longer clean well, the
blades are probably worn or cracked.
Replace them.
CAUTION

To prevent damage to the wiper arms
and other components, do not try to
sweep the wiper arm by hand.
 Do not bend the blade rubber
unnecessarily when replacing it.
Otherwise, the metal stiffener in the
blade may deform and the windshield
wiper operation may be adversely
affected.
NOTE
When raising both windshield wiper arms,
raise the driver's side wiper arm first.
When lowering the wiper arms, slowly
lower the wiper arm from the passenger's
side first while supporting it with your
hand. Forcefully lowering the wiper arms
could damage the wiper arm and blade,
and may scratch or crack the windshield.
Replace the wiper blades using the
following procedure.
1. Raise the wiper arm.
CAUTION
To prevent damage to the windshield
let the wiper arm down easily, do not
let it slap down on the windshield.
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