ECU MAZDA MODEL 3 4-DOOR 2012 Repair Manual

Black plate (373,1)
If you are unsure of how tight the nuts
should be, have them inspected at an
Authorized Mazda Dealer.
Nut tightening torque
N·m (kgf·m, ft·lbf) 88 ―118 (9 ―12, 65 ―87)
WARNING
Always securely and correctly tighten
the lug nuts:
Improperly or loosely tightened lug
nuts are dangerous. The wheel could
wobble or come off. This could result
in loss of vehicle control and cause a
serious accident.
Be sure to reinstall the same nuts you
removed or replace them with metric
nuts of the same configuration: Because the wheel studs and lug nuts
on your Mazda have metric threads,
using a non-metric nut is dangerous.
On a metric stud, it would not secure
the wheel and would damage the
stud, which could cause the wheel to
slip off and cause an accident.
5. Store the damaged tire, using the tire hold-down bolt to hold it in place.
(Without sub-woofer)
Tire clamp
Bolt for flat tire
(With sub-woofer)
Sub-woofer
Bolt for flat tire
6. Remove the tire blocks and store the
tools, jack, and damaged tire.
7. Check the inflation pressure. Refer to Tires on page 10-11.
8. Have the flat tire repaired or replaced as soon as possible.
WARNING
Do not drive with any tires that have
incorrect air pressure: Driving on tires with incorrect air
pressure is dangerous. Tires with
incorrect pressure could affect
handling and result in an accident.
When you check the regular tires' air
pressure, check the spare tire, too.
NOTE
(With Tire Pressure Monitoring System)
A tire pressure sensor is not installed to the
temporary spare tire. The warning light will
flash continuously while the temporary spare
tire is being used (page 5-33).
NOTE
To prevent the jack and tool from rattling, store
them properly.
In Case of an Emergency
Flat Tire
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Form No.8BY6-EA-11F

Black plate (382,1)
NOTE
Verify that the covers are securely installed.Push-Starting
Do not push-start your Mazda.
WARNING
Never tow a vehicle to start it:Towing a vehicle to start it is
dangerous. The vehicle being towed
could surge forward when its engine
starts, causing the two vehicles to
collide. The occupants could be
injured.
CAUTION
Do not push-start a vehicle that has
a manual transaxle. It can damage
the emission control system.
NOTE
You can't start a vehicle with an automatic
transaxle by pushing it.
7-24
In Case of an Emergency
Emergency Starting
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Form No.8BY6-EA-11F

Black plate (384,1)
Tiedown Hook
CAUTION
Do not use the front and rear
tiedown eyelets for towing the
vehicle.
They have been designed only for
securing the vehicle to a transport
vessel during shipping.
Using the eyelets for any other
purpose could result in the vehicle
being damaged.
qTiedown Hook-Front
Type A
1. Remove the tiedown eyelet and the lug
wrench from the trunk (page 7-3).
2. Wrap the lug wrench with a soft cloth to prevent damage to the bumper and
remove the cover located on the front
bumper.
NOTE
Remove the cover completely and store it so as
not to lose it.
3. Securely install the tiedown eyeletusing the lug wrench.
Lug wrench
4. Hook the tying rope to the tiedown
eyelet.
CAUTION
ØIf the tiedown eyelet is not securely
tightened, it may loosen or
disengage from the bumper when
tying down the vehicle. Make sure
that the tiedown eyelet is securely
tightened to the bumper.
Ø The front tiedown hook is
designed only for lashing the
vehicle during overseas transport.
Do not use the front tiedown hook
for any other use such as
transporting the vehicle on trucks
or railway.
7-26
In Case of an Emergency
Emergency Towing
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Form No.8BY6-EA-11F

Black plate (385,1)
Type B
1. Remove the tiedown eyelet from thetrunk (page 7-3).
2. Remove the cover.
NOTE
Remove the cover completely and store it so as
not to lose it.
3. Securely install the tiedown eyelet using the lug wrench.
Lug wrench
4. Hook the tying rope to the tiedowneyelet.
CAUTION
ØIf the tiedown eyelet is not securely
tightened, it may loosen or
disengage from the bumper when
tying down the vehicle. Make sure
that the tiedown eyelet is securely
tightened to the bumper.
Ø The front tiedown hook is
designed only for lashing the
vehicle during overseas transport.
Do not use the front tiedown hook
for any other use such as
transporting the vehicle on trucks
or railway.
In Case of an Emergency
Emergency Towing
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Form No.8BY6-EA-11F

Black plate (409,1)
Inspect the antifreeze protection and
coolant level in the coolant reservoir at
least once a year―at the beginning of the
winter season ―and before traveling
where temperatures may drop below
freezing.
Inspect the condition and connections of
all cooling system and heater hoses.
Replace any that are swollen or
deteriorated.
The coolant should be at full in the
radiator and between the MAX and MIN
marks on the coolant reservoir when the
engine is cool.
If it is at or near MIN, add enough coolant
to the coolant reservoir to provide
freezing and corrosion protection and to
bring the level to MAX.
Securely tighten the coolant reservoir tank
cap after adding coolant.
CAUTION
Ø Radiator coolant will damage
paint.
Rinse it off quickly if spilled.
Ø Use only soft (demineralized)
water in the coolant mixture.
Water that contains minerals will
cut down on the coolant's
effectiveness.
Ø Do not add only water. Always
add a proper coolant mixture.
Ø The engine has aluminum parts
and must be protected by an
ethylene-glycol-based coolant to
prevent corrosion and freezing.
Ø DO NOT USE coolants Containing
Alcohol, methanol, Borate or
Silicate.
These coolants could damage the
cooling system.
Ø DO NOT MIX alcohol or methanol
with the coolant. This could
damage the cooling system.
Ø Do not use a solution that
contains more than 60%
antifreeze.
This would reduce effectiveness.
Maintenance and Care
Owner Maintenance
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Black plate (422,1)
SKYACTIV-G 2.0
Cowl grilleTa b
Hole
MZR 2.0, MZR 2.3 DISI Turbo and
MZR 2.5
Cowl grille Tabs
Holes
2 Attach the clips on both sides ofthe battery cover.
Clips
q Battery Maintenance
To get the best service from a battery:lKeep it securely mounted.lKeep the top clean and dry.lKeep terminals and connections clean,
tight, and coated with petroleum jelly
or terminal grease.
lRinse off spilled electrolyte
immediately with a solution of water
and baking soda.
lIf the vehicle will not be used for an
extended time, disconnect the battery
cables.
qInspecting Electrolyte Level
A low level of electrolyte fluid will cause
the battery to discharge quickly.
Upper level
Lower level
8-36
Maintenance and Care
Owner Maintenance
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Black plate (443,1)
3. Pull the fuse straight out with the fusepuller provided on the inside of the
engine compartment fuse block cover.
4. Inspect the fuse and replace it if it'sblown.
Normal Blown
5. Insert a new fuse of the same amperage
rating, and make sure it fits tightly. If it
does not fit tightly, have an expert
install it. We recommend an
Authorized Mazda Dealer.
If you have no spare fuses, borrow one
of the same rating from a circuit not
essential to vehicle operation, such as
the AUDIO or CIGAR circuit.
CAUTION
Always replace a fuse with one of the
same rating. Otherwise you may
damage the electric system. 6. Reinstall the cover and make sure that
it is securely installed.
Replacing the fuses under the hood
If the headlights or other electrical
components do not work and the fuses in
the cabin are normal, inspect the fuse
block under the hood. If a fuse is blown, it
must be replaced. Follow these steps:
1. Make sure the ignition is switched off,
and other switches are off.
2. Remove the fuse block cover.
3. If any fuse but the MAIN fuse is blown, replace it with a new one of the
same amperage rating .
Normal
Blown
Maintenance and Care
Owner Maintenance
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Black plate (444,1)
WARNING
Do not replace the main fuse by
yourself. Have an Authorized Mazda
Dealer perform the replacement:Replacing the fuse by yourself is
dangerous because the MAIN fuse is
a high current fuse. Incorrect
replacement could cause an electrical
shock or a short circuit resulting in a
fire.
4. Reinstall the cover and make sure that it is securely installed.
8-58
Maintenance and Care
Owner Maintenance
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Form No.8BY6-EA-11F

Black plate (458,1)
qCleaning the Floor Mats
Rubber floor mats should be cleaned with
mild soap and water only.
WARNING
Do not use rubber cleaners, such as tire
cleaner or tire shine, when cleaning
rubber floor mats:
Cleaning the rubber floor mats with
rubber cleaning products makes the
floor mats slippery.
This may cause an accident when
depressing the accelerator, brake, or
clutch (Manual transaxle) pedal or
when getting in or out of the vehicle.
After removing the floor mats for
cleaning, always reinstall them
securely.Refer to Floor Mat on page 4-8.
8-72
Maintenance and Care
Appearance Care
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Form No.8BY6-EA-11F

Black plate (516,1)
Personalization Features
The following“Personalization Features ”are available. These settings can only be changed by an Authorized
Mazda Dealer.
Item Feature Factory Setting Available Settings
Illumination entry The time required for the interior lamp to turn
off automatically after all doors are closed can
be changed
15 seconds 7.5/30/60 seconds
The time required for the interior lamp to
illuminate after unlocking any door can be
changed 30 seconds 7.5/15/60 seconds
The function allowing the interior lamp to
illuminate automatically when the ignition is
switched off can be deactivated Activated Deactivated
The function allowing the interior lamp to
illuminate automatically when the doors are
unlocked can be deactivated Activated Deactivated
The function allowing the interior lamp to turn
off automatically when any door is opened
(or not securely closed) can be changed Activated Deactivated
The time required for the interior lamp to turn
off automatically can be changed
(prevents battery depletion when a door is
open/ajar) 30 minutes 60/10 minutes
Keyless entry The time required for the doors to relock
automatically after unlocking with the
transmitter can be changed
30 seconds 60/90 seconds
The flashing of the hazard warning lights when
the doors are locked/unlocked can be changed Activated Deactivated
The function allowing the horn to sound
automatically when the doors are locked by
pressing the transmitter two times consecutively
can be deactivated Activated Deactivated
Smart turn The function allowing the turn signal lights to
flash three times with a momentary turn switch
operation (when changing lanes) can be
changed Deactivated Activated
10-12
Personalization Features
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Form No.8BY6-EA-11F