stop start MAZDA MODEL 3 HATCHBACK 2021 User Guide

This is for improved exhaust gaspuri fication and does not indicate
any parts defect.
Engine-starting is controlled by the
spark ignition system.
This system meets all Canadian
Interference-Causing Equipment
Standard requirements regulating the
impulse electrical field strength of
radio noise.
1. Make sure you are carrying the key.
2. Occupants should fasten their seat belts.
3. Make sure the parking brake is on.
4. Continue to depress the brake pedal firmly until the engine has
completely started.
5. (Manual transmission)
Continue to depress the clutch
pedal firmly until the engine has
completely started.
(Automatic transmission)
Put the vehicle in park (P). If you
must restart the engine while the
vehicle is moving, shift into neutral
(N).
NOTE
(Manual transmission)
The starter will not operate if the
clutch pedal is not depressed
su fficiently.
(Automatic transmission)
The starter will not operate if the
selector lever is not in P or N
position and the brake pedal is
not depressed su fficiently.
6. Make sure that the KEY indicator
light (green) in the instrument
cluster and push button start
indicator light (green) turns on.
1. Indicator light
2. Push button start
NOTE
If the push button start indicator
light (green) flashes, make sure
that the key is being carried.
If the push button start indicator
light (green) flashes with the key
being carried, touch the key to
the push button start and start
the engine.
Refer to Engine Start Function
When Key Battery is Dead on
page 4-8.
CAUTION
If the KEY warning indication (red)
is displayed, or the push button
start indicator light (amber) fl ashes,
this could indicate a problem with
the engine starting system. This may
prevent the engine from starting or
from switching the ignition to ACC
or ON.
Refer to KEY Warning Indication/
Warning Light (Red) on page
7-33.
When Driving
Start/Stop Engine
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Have your vehicle inspected at an
Authorized Mazda Dealer as soon
as possible.
NOTE
Under the following conditions,
the KEY warning indication (red)
is displayed after the push button
start is pressed. This informs the
driver that the push button start
will not switch to ACC, even if it
is pressed from off (page 7-33).
The key battery is dead.The key is out of operational
range.
The key is placed in areas where
it is di
fficult for the system to
detect the signal (page 3-7).
A key from another
manufacturer similar to the key
is in the operational range.
(Forced engine starting method)
If the KEY warning indication
(red) is displayed, or the push
button start indicator light
(amber) flashes, this could
indicate that the engine may not
start using the usual starting
method (page 7-33). 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
clutch pedal (manual
transmission) or the brake pedal
(automatic transmission) are
required.
When the engine is force-started,
the KEY warning indication (red)
remains displayed and the push
button start indicator light
(amber) remains flashing.
(Automatic transmission)
When the selector lever is in the
neutral (N) position, the push
button start indicator light (green)
does not turn on.
7. Press the push button start after the push button start indicator light
(green) turns on.
NOTE
After starting the engine, the push
button start indicator light
(amber) turns o ff and the ignition
switches to the ON position.
After pressing the push button
start and before the engine starts,
the operation sound of the fuel
pump motor from near the fuel
tank can be heard, however, this
does not indicate a malfunction.
8. After starting the engine, let it idle for about 10 seconds.
NOTE
Do not use high engine speeds
until reaching the operating
temperature.
Whether the engine is cold or
warm, it should be started
without the use of the
accelerator.
If the engine does not start the
first time, refer to Starting a
Flooded Engine under Emergency
Starting. If the engine still does
not start, have your vehicle
inspected by an Authorized
Mazda Dealer (page 7-20).
When Driving
Start/Stop Engine
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▼Engine Start Function When Key
Battery is Dead
CAUTION
When starting the engine by holding
the transmitter over the push button
start due to a dead key battery or a
malfunctioning key, be careful not to
allow the following, otherwise the
signal from the key will not be received
correctly and the engine may not start.

Metal parts of other keys or metal
objects touch the key.
Spare keys or keys for other vehicles
equipped with an immobilizer
system touch or come near the key.
Devices for electronic purchases, or
security passage touch or come near
the key.
If the engine cannot be started due to
a dead key battery, the engine can be
started using the following procedure:
1. Continue to depress the brake
pedal firmly until the engine has
completely started.
2. (Manual transmission)
Continue to depress the clutch
pedal firmly until the engine has
completely started.
(Automatic transmission)
Put the vehicle in park (P). If you
must restart the engine while the
vehicle is moving, shift into neutral
(N).
3. Make sure that the push button start indication light (green) flashes.
4. Align the center area of the emblem on the transmitter with the
center area of the push button start
while the push button start
indicator light (green) flashes.

1. Indicator light
2. Push button start
3. Transmitter
4. Emblem

5. Make sure that the push button start indicator light (green) turns
on.
6. Press the push button start to start the engine.
When Driving
Start/Stop Engine
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NOTE
The engine cannot be started
unless the clutch pedal is fully
depressed (manual transmission)
or the brake pedal is fully
depressed (automatic
transmission).
If there is a malfunction with the
push button start function, the
push button start indicator light
(amber) flashes. In this case, 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 clutch pedal (manual transmission) or
brake pedal (automatic
transmission).
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 indication (red) is
displayed, or the push button start
indicator light (amber)
flashes, this
could indicate that the engine may not
start using the usual starting method.
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
clutch pedal (manual transmission) or
the brake pedal (automatic
transmission) are required.
When Driving
Start/Stop Engine
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Turning the Engine Off
▼Turning the Engine
Off
WARNING
Do not stop the engine while the
vehicle is moving:
Stopping the engine while the vehicle
is moving for any reason other than in
an emergency is dangerous. Stopping
the engine while the vehicle is moving
will result in reduced braking ability
due to the loss of power braking ,
which could cause an accident and
serious injury.
1. Stop the vehicle completely.
2. (Manual transmission)
Shift into neutral and set the
parking brake.
(Automatic transmission)
Shift the selector lever to the P
position and set the parking brake.
3. Press the push button start to turn
off the engine. The ignition position
is o ff.
CAUTION
 When leaving the vehicle, make sure
the push button start is o ff.
NOTE
(SKYACTIV -G 2.0, SKYACTIV -G 2.5)
The cooling fan in the engine
compartment could turn on for a few
minutes after the ignition is switched
from ON to OFF, whether or not the
A/C is on or o ff, to cool the engine
compartment quickly.
If the system detects that the
remaining battery power of the key is
low when the ignition is switched
from ON to ACC or OFF, the
following is indicated.
Replace with a new battery before
the key becomes unusable.
Refer to Key Battery Replacement on
page 6-31.
A message is indicated in the display
of the instrument cluster.
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-33.
(Automatic transmission)
If the engine is turned off while the
selector lever is in a position other
than P, the ignition switches to ACC.
▼ Emergency Engine Stop
Continuously pressing the push button
start or quickly pressing it any number
of times while the engine is running or
the vehicle is being driven will turn the
engine
off immediately. The ignition
switches to ACC.
When Driving
Start/Stop Engine
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Cylinder Deact ivat ion
▼Cylinder Deact ivat ion
The cylinder deactivation is a function
designed to reduce fuel consumption
and improve fuel economy by
deactivating 2 out of the 4 cylinders
while driving. The function constantly
determines which is better for driving;
4 cylinders or 2 cylinders, regardless of
the driver's operations, and it performs
the switching automatically.
When the cylinder deactivation
function does not operate
The cylinder deactivation function
does not operate under the following
conditions.
The selector lever is in the P, N, or R
position (automatic transmission), or
1st gear (manual transmission).
The engine oil temperature or engine
coolant temperature is low.
After disconnecting the battery
terminals for some reason, such as
for battery replacement.
When Driving
Start/Stop Engine
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▼Gear Shift Indicator (GSI)
The GSI supports you to obtain
optimum fuel economy and smooth
driving. It displays the selected gear
position in the instrument cluster as
well as noti
fies the driver to change to
the most suitable gear position
corresponding to the actual driving
condition.

1. Selected gear position
2. Suitable gear position
Indication Condition
Numeral The selected gear position is
displayed.
and numer-
al Shift up or down to the indi-
cated gear position is recom-
mended.
CAUTION
Do not rely solely on the shift-up/
shift-down recommendations by
indications. The actual driving situation
might require shift operations
different
from indication. To avoid the risk of
accidents, the road and traffic
conditions have to be judged correctly
by the driver before shifting.
NOTE
The GSI turns o ff when the following
operations are performed.
The vehicle is stopped.The vehicle is put in neutral.The vehicle is driven in reverse.
The clutch is not fully engaged when
accelerating from a stop.
The clutch pedal remains depressed
for 2 seconds or longer while driving.
▼ Recommendations for Shifting
Upshifting
For normal acceleration, Mazda
recommends these shift points:
(U.S.A. and Canada)
Gear
Vehicle speed
1 to 2 24 km/h (15 mph)
2 to 3 42 km/h (26 mph)
3 to 4 60 km/h (37 mph)
4 to 5 75 km/h (46 mph)
5 to 6 79 km/h (49 mph)
For cruising, Mazda recommends these
shift points:
(U.S.A. and Canada)
Gear Vehicle speed
1 to 2 13 km/h (8 mph)
2 to 3 29 km/h (18 mph)
3 to 4 49 km/h (30 mph)
4 to 5 63 km/h (39 mph)
5 to 6 70 km/h (43 mph)
Downshifting
When you must slow down in heavy
tra ffic or on a steep upgrade,
downshift before the engine starts to
overwork. This reduces the chance of
stalling and gives better acceleration
when you need more speed.
On a steep downgrade , downshifting
helps maintain safe speed and
prolongs brake life.
When Driving
Manual Transmission Operation
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Tra n s m i s s i o n R a n ge s
▼Transmission Ranges
The shift position indication in the
instrument cluster illuminates.
Refer to Shift Position Indication on
page 4-38.
Shift the selector lever to the P or N
position to start the engine.
P (Park)
P locks the transmission and prevents
the front wheels from rotating.
WARNING
Always set the selector lever to P
position and set the parking brake:
Only setting the selector lever to the P
position without using the parking
brake to hold the vehicle is dangerous.
If P fails to hold, the vehicle could
move and cause an accident.
CAUTION
 Shifting into P, N or R while the
vehicle is moving can damage your
transmission.
 Shifting into a driving gear or reverse
when the engine is running faster
than idle can damage the
transmission.
R (Reverse)
In position R, the vehicle moves only
backward. You must be at a complete
stop before shifting to or from R,
except under rare circumstances as
explained in Rocking the Vehicle (page
3-46).
N (Neutral)
In N, the wheels and transmission are
not locked. The vehicle will roll freely
even on the slightest incline unless the
parking brake or brakes are on.
WARNING
If the engine is running faster than
idle, do not shift from N or P into a
driving gear:
It's dangerous to shift from N or P into
a driving gear when the engine is
running faster than idle. If this is done,
the vehicle could move suddenly,
causing an accident or serious injury.
Do not shift into N when driving the
vehicle:
Shifting into N while driving is
dangerous. Engine braking cannot be
applied when decelerating which
could lead to an accident or serious
injury.
CAUTION
Do not shift into N when driving the
vehicle. Doing so can cause
transmission damage.
NOTE
Apply the parking brake or depress the
brake pedal before moving the selector
lever from N position to prevent the
vehicle from moving unexpectedly.
D (Drive)
D is the normal driving position. From
a stop, the transmission will
automatically shift through a 6-gear
sequence.
When Driving
Automatic Transmission
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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 lights turn o ff. When starting to drive the vehicle, the daytime
running lights turn on again.
*3 When the ignition is switched from 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 o ff function, and then they turn o ff.
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 lights O ff
On*7Off On*8Off Off
Taillights
Parking lights
License plate lights
Side-marker lights Off
OffOn
On
*9On*9On*6
*1 When the light switch is switched to OFF while the vehicle is stopped, the lights turn o ff. The light
switch returns automatically to the AUTO position and the headlights change to AUTO operation
when you start driving the vehicle.
*2 The level of brightness around the vehicle is of a su fficient level.*3 The level of brightness around the vehicle is of an insu fficient level.*4 The daytime running lights can be disabled usin g the personalization features (page 4-51). If the
daytime running lights are disabled, the headlights turn o ff directly after starting the engine. The
headlights turn on when you begin driving the vehicle.
*5 When the light switch is switched from the OFF, AUTO, or position to the position while
the vehicle is stopped, the headlights turn o ff. When starting to drive the vehicle, the headlights turn
on again.
*6 When the ignition is switched from ON to ACC or OFF, the headlights turn o ff if the auto headlight
o ff function has been canceled. If the auto headlight o ff function is enabled, the lights turn on for the
set period using the auto headlight o ff function, and then they turn o ff.
When Driving
Switches and Controls
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*7 When the light switch is switched to a different position from the AUTO position while the vehicle is
stopped, the daytime running lights turn o ff. When starting to drive the vehicle, the daytime running
lights turn on again.
*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 vehicle, the daytime running lights turn on again.
*9 When the ignition is switched from ON to ACC or OFF, the headlights remain on if the auto headlight off function has been canceled. If the auto headlight o ff function is enabled, the lights turn on for the
set period using the auto headlight o ff function, and then they turn o ff.
Auto-light control
When the headlight switch is in the AUTO position and the ignition is switched ON,
the light sensor senses the surrounding li ghtness or darkness and automatically turns
the headlights and other exterior lights on or off.
CAUTION
 Do not shade the light sensor by adhering a sticker 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 automatically. If you are
going to clean the windshield, be sure the wipers are turned o ff completely when
it is particularly tempting to leave the en gine running. This is particularly important
when clearing ice and snow.
When Driving
Switches and Controls
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