engine MAZDA MODEL 3 HATCHBACK 2020 (in English) Workshop Manual

▼Recommendations for Shifting
Upshifting
For normal acceleration and cruising, Mazda recommends these sh
ift points:
(U.S.A. and Canada)
Gear Vehicle speed*1
M1 to M224 km/h (15 mph)
M2 to M3 40 km/h (25 mph)
M3 to M4 65 km/h (40 mph)
M4 to M5 73 km/h (45 mph)
M5 to M6 81 km/h (50 mph)
*1 Always observe local speed limit regulations.
Downshifting
When you must slow down in heavy traffic or on a steep upgrade, downshift before the
engine starts to overwork. This gives better acceleration when you need more speed.

On a steep downgrade, downshifting helps maintain safe speed an d prolongs brake life.
When Driving
Automatic Transmission
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Driving Tips
▼Driving Tips
WA R N I N G
Do not let the vehicle move in a direction
opposite to the direction selected by the
selector lever:
Do not let the vehicle move backward with
the selector lever in a forward position, or
do not let the vehicle move forward with
the selector lever in the reverse position.
Otherwise, the engine may stop, causing
the loss of the power brake and power
steering functions, and make it
difficult to
control the vehicle which could result in an
accident.
Passing
For extra power when passing another
vehicle or climbing steep grades, depress
the accelerator fully. The transmission will
shift to a lower gear, depending on vehicle
speed.
NOTE
The accelerator pedal may initially feel
heavy as it is being depressed, then feel
lighter as it is depressed further. This
change in pedal force aids the engine
control system in determining how much
the accelerator pedal has been
depressed for performing kickdown, and
functions to control whether or not
kickdown should be performed.
While the selector lever is in the M
position and the DSC is turned off,
manual shift mode does not switch to
automatic shift mode even if the
accelerator pedal is completely
depressed. Operate the selector lever.
Climbing steep grades from a stop
To climb a steep grade from a stopped
position:
1. Depress the brake pedal.
2. Shift to D or M1, depending on the load weight and grade steepness.
3. Release the brake pedal while gradually accelerating.
Descending steep grades
When descending a steep grade, shift to
lower gears, depending on load weight and
grade steepness. Desce nd slowly, using the
brakes only occasionally to prevent them
from overheating.
When Driving
Automatic Transmission
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Lighting Control
▼Headlights
Turn the headlight switch to tur
n the headlights and other exterior lights on or off.
When the taillights, parking lights, licen se plate lights, and the side-marker lights are turned
on, the lights-on indicator light in the instrument cluster tur ns on.

NOTE
If the light switch is left on, the lights will automatically switch off approximately 30
seconds after switching the ignition off.
The time setting can be changed.
Refer to the Settings section in the Mazda Connect Owner's Manual.
To prevent discharging the battery, do not leave the lights on while th e engine is off unless
safety requires them.
Without auto-light control
Switch Position OFF
Headlights OffOff
On*1
Daytime running lights On*2On*2Off
Taillights
Parking lights
License plate lights
Side-marker lights Off
On
*3On*1
*1 When the ignition is switched from ON to ACC or OFF, the headl ights turn off if the auto headlight off
function has been canceled. If the auto headlight off function is enabled, the lights turn on for the set period
using the auto headlight off function, and then they turn off.
When Driving
Switches and Controls
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*2 When the light switch is switched to a different position from the OFF, position while the vehicle is
stopped, the daytime running light s turn off. When starting to drive the vehicle, the daytime running lights turn
on again.
*3 When the ignition is switched fr om ON to ACC or OFF, the headlights remain on if the auto headlight off
function has been canceled. If the auto headlight off function is enabled, the lights turn on for the set period
using the auto headlight off function, and then they turn off.
With auto-light control
Switch Position OFF*1
AUTO
Surround‐
ings are
bright
*2
Surround‐ ings are
dark
*3
Surround‐ ings are
bright
*2
Surround‐ ings are
dark
*3
Headlights Off Off On Off
On*4*5On*6
Daytime running lightsOff
On*7OffOn*8Off Off
Taillights
Parking lights
License plate lights
Side-marker lights Off Off On
On
*9On*9On*6
*1 When the light switch is switched to OFF while the vehicle is stopped, the lights turn off. The light switch
returns automatically to the AUTO position and the headlights c hange to AUTO operation when you start
driving the vehicle.
*2 The level of brightness around the vehicle is of a sufficient level.*3 The level of brightness around the vehicle is of an insufficie nt level.*4 The daytime running lights can be disabled using the personali zation features (page 4-49). If the daytime
running lights are disabled, the headlights turn off directly a fter starting the engine. The headlights turn on
when you begin driving the vehicle.
*5 When the light switch is sw itched from the OFF, AUTO, or position to the position while the
vehicle is stopped, the headlight s turn off. When starting to drive the vehicle, the headlights turn on again.
*6 When the ignition is switched fr om ON to ACC or OFF, the headlights turn off if the auto headlight off
function has been canceled. If the auto headlight off function is enabled, the lights turn on for the set period
using the auto headlight off function, and then they turn off.
*7 When the light switch is switche d to a different position from the AUTO position while the vehicle is stopped,
the daytime running lights turn off. When starting to drive the vehicle, the daytime running lights turn on
again.
When Driving
Switches and Controls
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*8 If one of the following operations is done from the position while the vehicle is stopped, the daytime
running lights turn off.
Switch the light switch to the OFF position.
Switch the light switch to the AUTO position, and then to the position again.
Switch the light switch to the position.
When starting to drive the vehic le, the daytime running lights turn on again.
*9 When the ignition is switched from ON to ACC or OFF, the headl ights remain on if the auto headlight off
function has been canceled. If the auto headlight off function is enabled, the lights turn on for the set period
using the auto headlight off function, and then they turn off.
Auto-light control
When the headlight switch is in the AUTO position and the ignit ion is switched ON, the
light sensor senses the surrounding lightness or darkness and a utomatically turns the
headlights and other exterior lights on or off.
CAUTION
 Do not shade the light sensor by adhering a st icker or a label on the windshield. Otherwise
the light sensor will not operate correctly.
 The light sensor also works as a rain sensor for the auto-wiper control. Keep hands and
scrapers clear of the windshield when the wiper lever is in the AUTO position and the
ignition is switched ON as fingers could be pinched or the wipers and wiper blades could be
damaged when the wipers activate automaticall y. If you are going to clean the windshield,
be sure the wipers are turned off completely when it is partic
ularly tempting to leave the
engine running. This is particularly important when clearing ice and snow.
NOTE
The headlights and other exterior lights may not turn off immediately even if the
surrounding area becomes well-lit because the light sensor determines that it is night time
if the surrounding area is continuously dark for several minutes such as inside long
tunnels, traffic jams inside tunnels, or in indoor parking lots.
When Driving
Switches and Controls
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CAUTION
Do not shade the rain sensor by adhering
a sticker or a label on the windshield.
Otherwise the rain sensor will not
operate correctly.
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 or wiped with a cloth.
 If the windshield is struck with a hand
or other object from either outside or
inside the vehicle.
Keep hands and scrapers clear of the
windshield when the wiper lever is in the
AUTO position and the ignition is
switched ON as fingers could be pinched
or the wipers and wiper blades damaged
when the wipers activate automatically.
If you are going to clean the windshield,
be sure the wipers are turned off
completely (when it is most likely that the
engine is left running) this is particularly
important when clearing ice and snow.
NOTE
Switching the auto-wiper lever from the
OFF to the AUTO position while driving
activates the windshield wipers once,
after which they operate according to
the rainfall amount.
The auto-wiper control may not operate
when the rain sensor temperature is
about
－10 °C (14 °F) or lower, or
about 85 °C (185 °F) or higher.
If the windshield is coated with water
repellent, the rain sensor may not be
able to sense the amount of rainfall
correctly and the auto-wiper control
may not operate properly.
If dirt or foreign matter (such as ice or
matter containing salt water) adheres to
the windshield above the rain sensor, or
if the windshield is iced, it could cause
the wipers to move automatically.
However, if the wipers cannot remove
this ice, dirt or foreign matter, the
auto-wiper control wi ll stop operation.
In this case, set the wiper lever to the
low speed position or high speed
position for manual operation, or
remove the ice, dirt or foreign matter by
hand to restore the auto-wiper
operation.
If the auto-wiper lever is left in the
AUTO position, the wipers could
operate automatically from the effect of
strong light sources, electromagnetic
waves, or infrared light because the rain
sensor uses an optical sensor. It is
recommended that the auto-wiper lever
be switched to the OFF position other
than when driving the vehicle under
rainy conditions.
When Driving
Switches and Controls
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Brake System
▼Foot Brake
This vehicle has pow
er-assisted brakes
that adjust automatically through normal
use.

Should power-assist fail, you can stop by
applying greater force than normal to the
brake pedal. But the distance required to
stop will be greater than usual.
WA R N I N G
Do not coast with the engine stalled or
turned off,
find a safe place to stop:
Coasting with the engi ne stalled or turned
off is dangerous. Braking will require more
effort, and the brake's power-assist could
be depleted if you pump the brake. This will
cause longer stopping distances or even an
accident.
Shift to a lower gear when going down
steep hills:
Driving with your foot continuously on the
brake pedal or steadily applying the brakes
for long distances is dangerous. This causes
overheated brakes, resulting in longer
stopping distances or even total brake
failure. This could cause loss of vehicle
control and a serious accident. Avoid
continuous application of the brakes.
Dry off brakes that have become wet by
driving slowly, releasing the accelerator
pedal and lightly applying the brakes
several times until the brake performance
returns to normal:
Driving with wet brakes is dangerous.
Increased stopping distance or the vehicle
pulling to one side when braking could
result in a serious accident. Light braking
will indicate whether the brakes have been
affected.
CAUTION
 Do not drive with your foot held on the
clutch pedal or brake pedal, or hold the
clutch pedal depressed halfway
unnecessarily. Doing so could result in
the following:
 The clutch and brake parts will wear
out more quickly.
 The brakes can overheat and adversely
affect brake performance.
 Always depress the brake pedal with the
right foot. Applying the brakes with the
unaccustomed left foot could slow your
reaction time to an emergency situation
resulting in insufficient braking
operation.
Wear shoes appropriate for driving in
order to avoid your shoe contacting the
brake pedal when depressing the
accelerator pedal.
When Driving
Brake
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If there is a problem with the brake
system (foot brake) while driving the
vehicle, continually pulling up the EPB
switch will apply the brakes and
decelerate or stop the vehicle. The
parking brake on-reminder sound is
activated while the brake is applied. In
addition, when releasing the switch, the
brake is released and the sound stops.
If the parking brake is applied with the
ignition switched OFF or in ACC, the
EPB indicator light in the instrument
cluster and the indicator light in the
switch may turn on for 15 seconds.
When using an automatic car wash
which moves the vehicle with the front
tires mounted, it is necessary to cancel
the parking brake auto operation before
the vehicle enters the automatic car
wash. For details, refer to Canceling the
parking brake automatic operation.
Manual operation
Applying the parki ng brake manually
When the brake pedal is firmly depressed
and the EPB switch is pulled up, the
parking brake is applied regardless of the
ignition position. When the parking brake
is applied, the EPB indicator light in the
instrument cluster a nd the EPB switch
indicator light turn on.
Releasing the parking brake manually
When the brake pedal is firmly depressed
and the EPB switch is pressed while the
ignition is switched ON or the engine is
running, the parking brake is released.
When the parking brake is released, the
EPB indicator light in the instrument
cluster and the EPB sw itch indicator light
turn off.
If the EPB switch is pressed without
depressing the brake pedal, a message is
displayed on the multi-information display
to notify the driver to depress the brake
pedal.
Refer to Message Indicated on
Multi-information Disp lay on page 7-38.
Auto operation
Applying the parking brake
automatically
When the ignition is switched from ON to
ACC or OFF, the par king brake will be
applied automatically. When the parking
brake is applied, the EPB indicator light in
the instrument cluster and the EPB switch
indicator light turn on.
When Driving
Brake
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NOTE
To release the parking brake when the
ignition is switched OFF, it is necessary to
cancel the parking brake auto operation.
For details, refer to Canceling the parking
brake automatic operation.
Releasing the parking brake
automatically
If the accelerator pedal is depressed with
the parking brake ap plied and all of the
following conditions met, the parking
brake is released automatically. When the
parking brake is released, the EPB
indicator light in the instrument cluster
and the EPB switch indicator light turn
off.
The engine is running.
The driver's door is closed.
The driver's seat belt is fastened.
(Manual transmission vehicle)
The shift lever is i n a position other
than neutral.
The clutch pedal is depressed halfway.
(Automatic trans mission vehicle)
The selector lever is in the D, M, or R
position.
NOTE
If something such as the driver's foot
contacts the accelerator pedal with the
engine running and the parking brake
applied, the parking brake might be
released automatically. If you do not
intend to start driving the vehicle
immediately, shift the shift lever to the
neutral position for a manual
transmission, or shift the selector lever to
the P or N position for an automatic
transmission.
Canceling the parking brake automatic
operation
The parking brake automatic operation can
be canceled by doing any of the following
after switching the ignition from ON to
OFF.
Auto operation cancel method 1
1. Switch the ignition ON.
2. Turn off the AUTOHOLD.
3. Press the EPB switch continuously for 2 seconds or longer (until a sound is
activated).
4. Release the EPB switch and switch the ignition OFF within 5 seconds after the
sound was activated.
After the auto opera tion is canceled, a
sound is activated one time, and the
EPB switch indicato r light switches
from illumination t o flashing, and then
turns off afte r 3 seconds.
Auto operation cancel method 2
1. Switch the ignition ON.
2. Turn off the AUTOHOLD.
3. Switch the ignition OFF with the EPB switch pressed.
When the auto operation is canceled, a
sound is activated one time, and the
EPB switch indicator light from
normal flashing to faster flashing, and
then turns off after 3 seconds.
NOTE
When canceling the parking brake auto
operation and parking the vehicle, shift
the shift lever to the 1st gear or the R
position for a manual transmission, or
shift the selector l ever to the P position
for an automatic transmission, and then
use wheel blocks.
When Driving
Brake
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▼AUTOHOLD System is Turned On
Press the AUTOHOLD
switch and when
the AUTOHOLD standby indicator light
turns on, the AUTOHOLD function turns
on.
1. AUTOHOLD standby indicator light
NOTE
When all of the following conditions are
met, the AUTOHOLD standby indicator
light turns on when the AUTOHOLD
switch is pressed and the AUTOHOLD
function turns on.
The ignition is switched ON (engine is
running).
The driver's seat belt is fastened.
The driver's door is closed.
There is no problem with the
AUTOHOLD function.
To operate AUTOHOLD and hold the
brakes
1. Depress the brake pedal and bring the vehicle to a complete stop.
2. The AUTOHOLD active indicator light in the instrument cluster turns on
and the brakes are held.
3. The vehicle is held in its stopped
position even with the brake pedal
released.
NOTE
When all of the following conditions are
met, the AUTOHOLD operates and the
brakes are held.
The ignition is swit ched ON (engine is
running).
The vehicle is stopped.
The brake pedal is being depressed.
The AUTOHOLD active indicator light
turns on.
The accelerator pedal is not depressed.
The driver's seat belt is fastened.
The driver's door is closed.
There is no problem with the
AUTOHOLD function.
The parking brake is released.
There is no problem with the Electric
Parking Brake (EPB) function.
(Automatic transmission vehicle)
The selector lever is in a position other
than R position or the vehicle tilts
forward with the selector lever in the R
position.
To release AUTOHOLD and start
driving the vehicle
If you do any of the following actions to
resume driving the vehicle, the brakes will
be released automatically and the
AUTOHOLD active indi cator light turns
off.
(Manual transmission vehicle)
You start to release the clutch pedal with
the shift lever shifted to a position other
than the neutral position
(Automatic transmission vehicle)
The accelerator pedal is depressed.
When Driving
Brake
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