battery MAZDA MODEL 3 4-DOOR 2018 Service Manual

Interior Lights
NOTE
Do not leave the lights on for long periods
while the engine is turned off. Otherwise
the battery power could be depleted.
Overhead Lights
Switch Posi-tion Overhead Lights
Light off
Light is on when any door is openLight is on or off
when the illumi-
nated entry system is on
Light on
With Map Lights
Front
Rear
Without Map Lights
NOTE
(With map lights)
The rear overhead light also turn on and
off when the front o verhead light switch is
operated.
Map Lights
*
When the overhead light switch is in the
door or off position, press the lens to
illuminate the map lights, and then press
the lens again to turn them off.
NOTE
The map lights will not turn off even if the
lens is pressed in the following cases:
The overhead light switch is in the ON
position.
The overhead light switch is in the door
position with the door open.
The illuminated entry system is on.
Interior Features
Interior Equipment
5-130*Some models.
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Luggage Compartment Lights (5–door)
Switch Posi-tion Luggage Compartment Light
Light off
Light on when the liftgate is open
Trunk Light (4–door)
The trunk light is on when the lid is open
and off when it's closed.
NOTE
To prevent the battery from being
discharged, do not leave the trunk open
for a long period when the engine is not
running.
▼
Illuminated Entry System
The overhead lights turn on when any of
the following operations is done with the
overhead light switch in the DOOR
position.
The driver's door is unlocked with the
ignition is switched OFF.
The ignition is sw
itched OFF with all
doors closed.
NOTE
The illumination tim e differs depending
on the operation.
Battery saver
If an interior light is left on with the
ignition switched OFF, the light is
turned off automatically after about 30
minutes to prevent battery depletion.
The operation of the illuminated entry
system can be changed.
Refer to Personalization Features on
page 9-12.
Interior Features
Interior Equipment
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Without CD Player

With Electric Parking
Brake (EPB)
Without Electric Parking
Brake (EPB)
CAUTION
To prevent accessory socket damage or
electrical failure, pay attention to the
following:
 Do not use accessories that require
more than 120 W (DC 12 V, 10 A).
 Do not use accessories that are not
genuine Mazda accessories or the
equivalent.
 Close the cover when the accessory
socket is not in use to prevent foreign
objects and liquids from getting into
the accessory socket.
 Correctly insert the plug into the
accessory socket.
 Do not insert the cigarette lighter into
the accessory socket.
Noise may occur on the audio playback
depending on the device connected to
the accessory socket.
 Depending on the device connected to
the accessory socket, the vehicle's
electrical system may be affected, which
could cause the warning light to
illuminate. Disconnect the connected
device and make sure that the problem is
resolved. If the problem is resolved,
disconnect the device from the socket
and switch the ignition off. If the problem
is not resolved, consult an Authorized
Mazda Dealer.
NOTE
To prevent discharging of the battery, do
not use the socket for long periods with the
engine off or idling.
Interior Features
Interior Equipment
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6Maintenance and Care
How to keep your Mazda in top condition.
Essential Information........................6-2 Introduction.................................. 6-2
Scheduled Maintenance.................... 6-4 Scheduled Maintenance (U.S.A.,
Canada, and Puerto Rico)............. 6-4
Scheduled Maintenance
(Mexico)..................................... 6-10
Maintenance Monitor................. 6-16
Owner Maintenance........................ 6-18 Owner Maintenance
Precautions................................. 6-18
Hood........................................... 6-20
Engine Compartment
Overview.................................... 6-22
Engine Oil...................................6-23
Engine Coolant........................... 6-25
Brake/Clutch Fluid ..................... 6-27
Washer Fluid............................... 6-27
Body Lubrication...... .................. 6-28
Wiper Blades.............................. 6-29
Battery........................................ 6-33
Key Battery Replacement........... 6-35
Tires............................................ 6-38
Light Bulbs................................. 6-42
Fuses........................................... 6-57
Appearance Care............................. 6-63
Exterior Care.............................. 6-63
Interior Care................................6-69
6-1
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NOTE
If you elect to perform maintenance yourself or have your vehicle serviced at a location
other than an Authorized Mazda Dealer, Mazda requires that all fluids, parts and materials
must meet Mazda standards for durability and performance as described in this manual.

Claims against the warranty resulting from lack of maintenance, as opposed to defective
materials or authorized Mazda wo rkmanship, will not be honored.

Any auto repair shop using parts equivalent to your Mazda's original equipment may
perform maintenance. But we recommend that it always be done by an Authorized
Mazda Dealer using ge nuine Mazda parts.
Selecting “Maintenance Monitor” enables the system to notify yo u of your vehicle's
approaching inspection/servicing period (page 6-16).

The malfunction diagnosis connector is designed exclusively for connecting the specially
designed device to perform on-board diagnosis.
Do not connect any devices other than the specially designed ma lfunction diagnosis devices
for servicing. If any device othe r than the malfunction diagnosis device is connected, it may
affect the vehicle's electrical devices or lead to damage such as battery depletion.
Malfunction
diagnosis
connector
Maintenance and Care
Essential Information
6-3
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Engine Compartment Overview
Windshield washer fluid reservoirBrake/Clutch fluid reservoir
Engine oil dipstick Battery
Fuse block
Cooling system cap Engine coolant reservoir Engine oil-filler cap
Maintenance and Care
Owner Maintenance
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Battery
WA R N I N G
Wash hands after handling the battery and related accessories:
Battery posts, terminals and related accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and reproductive harm.
Read the following precautions carefully before using the battery or inspecting to
ensure safe and correct handling:
Always wear eye protection when working near the battery:
Working without eye protection is dangerous. Battery fluid contains SULFURIC ACID which
could cause blindness if splashed into your ey es. Also, hydrogen gas produced during normal
battery operation, could ignite and cause the battery to explode.
Wear eye protection and protective gloves to prevent contact with battery
fluid:
Spilled battery fluid is dangerous.
Battery fluid contains SULFURIC ACID which could ca use serious injuries if it gets in eyes, or on
the skin or clothing. If this happens, immediately
flush your eyes with water for 15 minutes or
wash your skin thoroughly and get medical attention.
Always keep batteries out of the reach of children:
Allowing children to play near batteries is dangerous. Battery fluid could cause serious injuries
if it gets in the eyes or on the skin.
Maintenance and Care
Owner Maintenance
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Keep flames and sparks away from open battery cells and do not allow metal tools to
contact the positive (
) or negative () terminal of the battery when working near a battery.
Do not allow the positive (
) terminal to contact the vehicle body:
Flames and sparks near open battery cells are dangerous. Hydrogen gas, produced during
normal battery operation, could ignite and caus e the battery to explode. An exploding battery
can cause serious burns and injuries. Keep al l flames including cigarettes and sparks away
from open battery cells.
Keep all flames, including cigarettes, and sparks away from open battery cells:
Flames and sparks near open battery cells are dangerous. Hydrogen gas, produced during
normal battery operation, could ignite and caus e the battery to explode. An exploding battery
can cause serious burns and injuries.
NOTE
Before performing battery maintenance, remove the battery cover.

Maintenance and Care
Owner Maintenance
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▼Battery Maintenance
To get the best service from a battery:
Keep it securely mounted.
Keep the top clean and dry.
Keep terminals and connections clean,
tight, and coated with
petroleum jelly or
terminal grease.
Rinse off spilled electrolyte immediately
with a solution of water and baking
soda.
If the vehicle will not be used for an
extended time, disconnect the battery
cables and charge the battery every six
weeks.
▼ Battery Replacement
Contact an Authorized Mazda Dealer for a
battery replacement purchase.
Key Battery Replacement
If the buttons on the transmitter are
inoperable and the operation indicator
light does not flash, the battery may be
dead.
Replace with a new b
attery before the
transmitter becomes unusable.
CAUTION
 Make sure the battery is installed
correctly. Battery leakage could occur if it
is not installed correctly.
 When replacing the battery, be careful
not to touch any of the internal circuitry
and electrical terminals, bend the
electrical terminals, or get dirt in the
transmitter as the transmitter could be
damaged.
 There is the danger of explosion if the
battery is not correctly replaced.
 Dispose of used batteries according to
the following instructions.
 Insulate the plus and minus terminals
of the battery using cellophane or
equivalent tape.
 Never disassemble.
 Never throw the battery into fire or
water.
 Never deform or crush.
 Replace only with the same type battery
(CR2025 or equivalent).
Maintenance and Care
Owner Maintenance
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The following conditions indicate that the
battery power is low:
The KEY indicator light (green) flashes
in the instrument cluster for about 30
seconds after the engine is turned off.
The system does not operate and the
operation indicator light on the
transmitter does not flash when the
buttons are pressed.
The system's operational range is
reduced.
Replacing the battery at an Authorized
Mazda Dealer is recommended to prevent
damage to the key. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
1. Press the knob and pull out the auxiliary key.
Knob
2. Twist a tape-wrapped flatheadscrewdriver in the direction of the
arrow and open the cover slightly.
Cover
3. Insert the tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
Cover
Gap
4. Twist the flathead screwdriver in the
direction of the arrow and remove the
cover.
Cover
Maintenance and Care
Owner Maintenance
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