I stop MAZDA MODEL CX-50 2023 Service Manual

▼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
brake pedal are required.
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. 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 off.
CAUTION
When leaving the vehicle, make sure
the push button start is off.
When Driving
Start/Stop Engine
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NOTE
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 off, 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 6-29.
A message is indicated in the display
of the instrument cluster.
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-26.
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.
Cylinder Deactivation*
▼ Cylinder Deactivation
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.
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
4-10*Some models.
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i-stop*
▼i-stop
The i-stop function automatically stops
the engine when the vehicle is stopped
at a
traffic light or stuck in
traffic, and
then restarts the engine automatically
to resume driving. The system provides
improved fuel economy, reduced
exhaust gas emissions, and eliminates
idling noise while the engine is
stopped.
Engine idle stopping and restarting
NOTE
After parking the vehicle, make sure
that the ignition is switched OFF.
There is the possibility of the vehicle
moving if the vehicle is parked while
i-stop is operating.
The i-stop indicator light (green)
turns on under the following
conditions:
When engine idling is stopped.
The i-stop indicator light (green)
turns off when the engine is
restarted.
(AUTOHOLD operation turned off)
1. Stop the vehicle by depressing the
brake pedal and then the clutch
pedal.
2. While depressing the clutch pedal, shift the shift lever to the neutral
position. Engine idling stops after
the clutch pedal is released.
3. The engine restarts automatically when the clutch pedal is depressed.
(When the vehicle is stopped by the
AUTOHOLD function)
1. Bring the vehicle to a complete stop by depressing the brake pedal first
and then the clutch pedal.
2. While depressing the clutch pedal, shift the shift lever to neutral. After
releasing your foot from the clutch
pedal, engine idling stops and
continues to be stopped even if the
brake pedal is released.
3. The engine restarts automatically when the clutch pedal is depressed.
Engine idle stopping and restarting
while vehicle is stopped
(AUTOHOLD operation turned off and
When not using Mazda Radar Cruise
Control with Stop & Go function
(MRCC with Stop & Go function)/
Tra ffi c Ja m A s s i s t ( TJ A ) )
1. Engine idling stops when the brake pedal is depressed while the vehicle
is driven (except for driving in the R
or M position second gear fixed
mode) and the vehicle is stopped.
2. The engine restarts automatically when the brake pedal is released
with the selector lever in the D or
M position (not in second gear
fixed mode).
3. If the selector lever is in the N or P position, the engine does not
restart when the brake pedal is
released. The engine restarts when
the brake pedal is depressed again
or the selector lever is shifted to the
D, M (not in second gear fixed
mode) or the R position. (For the
purposes of safety, always keep the
brake pedal depressed when
shifting the selector lever while
engine idling is stopped.)
When Driving
Start/Stop Engine
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(When the vehicle is stopped by the
MRCC with Stop & Go function/TJA
stop hold control)
1. When the vehicle is stopped by theMRCC with Stop & Go function/
TJA, engine idling stops and
continues to be stopped without
depressing the brake pedal.
2. When the accelerator pedal is depressed or the RES switch is
operated, while the vehicle is
stopped by the MRCC with Stop &
Go function/TJA, the engine will
automatically restart if the selector
lever is in the D/M position (not in
second gear fixed mode).
(When the vehicle is stopped by the
AUTOHOLD function)
1. When the brake pedal is depressed while the vehicle is being driven
and the vehicle comes to a stop,
the i-stop function will operate and
continue to operate even if the
brake is released (except when
driving in the R or M position
second gear fixed mode).
2. The engine restarts automatically when the accelerator pedal is
depressed with the selector lever in
the D/M position (not in second
gear fixed mode).
3. If the selector lever is in the N or P position, the engine does not
restart when the brake pedal is
released. The engine restarts when
the brake pedal is depressed again
or the selector lever is shifted to the
D, M (not in second gear fixed
mode) or the R position. (For the
purposes of safety, always keep the
brake pedal depressed when
shifting the selector lever while
engine idling is stopped.)(When using MRCC with Stop & Go
function/TJA)
1. Engine idling stops when thevehicle has decelerated to about 20
km/h (12 mph) or slower while in
headway control using the MRCC
with Stop & Go function/TJA.
2. If it is necessary to accelerate while in headway control using the MRCC
with Stop & Go function/TJA, the
engine restarts automatically.
Operation conditions
Under the following conditions, engine
idling stops and the i-stop indicator
light (green) turns on.
The engine has been started and the
vehicle is driven for a certain period.
The engine is started with the hood
closed.
All doors, liftgate, and hood are
closed.
The driver's seat belt is unfastened
and the driver's door is opened.
The hood is opened.The air conditioner is not operating
with the airflow mode in the
position.The temperature setting dial of the
air conditioner is in a position other
than maximum heating or maximum
cooling (A/C ON) position.
(Automatic climate control system)
The vehicle's interior temperature
and the set temperature for the air
conditioner are nearly the same.
The i-stop warning light (amber) is
not turned on/flashing.
The keyless entry & push button start
system functions are normal.
The brake vacuum is sufficiently high.The battery is in good condition.
When Driving
Start/Stop Engine
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While vehicle is stopped
The selector lever is in the D or M
position (not in second gear fixed
mode).
The automatic transmission fluid
has warmed up sufficiently.
The automatic transmission fluid
temperature is not abnormally
high.
The steering wheel is almost in the
straight-ahead position (idling may
not stop even with the steering
wheel in the straight-ahead
position if force is applied to the
steering wheel. Release the force
applied to the steering wheel to
stop engine idling).
The vehicle is stopped by
depressing the brake pedal.
The vehicle is not on a steep slope.The vehicle is not stopped
suddenly.
While driving
The selector lever is in the D or M
position (not in second gear fixed
mode).
While drivingThe vehicle is driven at a vehicle
speed of about 40 km/h (25 mph)
or faster after engine idling stops
while driving.
The vehicle is not driven in sport
mode.
The automatic transmission fluid
has warmed up sufficiently.
The automatic transmission fluid
temperature is not abnormally
high.
The steering wheel is almost in the
straight-ahead position (idling may
not stop even with the steering
wheel in the straight-ahead
position if force is applied to the
steering wheel. Release the force
applied to the steering wheel to
stop engine idling).
The vehicle is stopped by
depressing the brake pedal.
The vehicle is not driven on a
slope.
The vehicle is not stopped
suddenly.
NOTE
Under the following conditions, a
period of time is required to stop
engine idling
The battery power is depleted for
some reason such as the vehicle has
not been driven for a long period.
The ambient temperature is high or
low.
After the battery terminals are
disconnected for some reason such
as for battery replacement.
Engine-stop period is short or time
until next engine idle stop is long
The ambient temperature is high or
low.
The battery power is depleted.Power consumption by the vehicle's
electrical parts is high.
Engine restarts automatically while
engine idling is stopped
Under the following conditions, the
engine restarts automatically.
The i-stop OFF switch is pressed until
the beep sounds.
The air conditioner is operated with
the airflow mode in the
position.The temperature setting dial of the
air conditioner is in the maximum
heating or maximum cooling (A/C
ON) position.
When Driving
Start/Stop Engine
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(Automatic climate control system)
The cabin temperature is largelydifferent from the set temperature of
the air conditioner.
The brakes are released slightly on a
slope and the vehicle begins to
move.
Two minutes have elapsed since the
idling was stopped.
The battery power is depleted.The hood is opened.The driver's seat belt is unfastened
and the driver's door is opened.
Engine idling is stopped while the
vehicle is stopped
The accelerator pedal is depressed
with the selector lever in the D or
M (not in second gear fixed mode)
position.
The selector lever is shifted to the R
position.
The selector lever is shifted from N
or P position to D or M (not in
second gear fixed mode) position.
The steering wheel is operated
with the selector lever in the D or
M (not in second gear fixed mode)
position.
The selector lever is in the M
position and the second gear fixed
mode is selected.
With the selector lever in the P or
N position, or the D/M range, the
driver's seat belt is unfastened, the
driver's door is opened, or the
hood is opened.
The steering wheel is operated.Engine idling is stopped while
driving
The selector lever is in a position
other than the D position.
The accelerator pedal is depressed.Sport mode is selected.The steering wheel is operated.
The shift lever is shifted to the R
position.
Selector lever is operated while
engine idling is stopped
If the selector lever is shifted from D or
M (not in second gear fixed mode)
position to N or P position while
engine idling is stopped, the engine
does not restart even when the brake
pedal is released. The engine will
restart if the brake pedal is depressed
again or the selector lever is shifted to
the D, M (not in second gear fixed
mode), or R position. (For the
purposes of safety, always keep the
brake pedal depressed when shifting
the selector lever.)
If the selector lever is shifted from the
D or M (not in second gear fixed
mode) to the N or P position, and the
driver's seat belt is unfastened or the
driver's door is opened, the engine
restarts.
Battery terminals have been
disconnected
Engine idling may not stop right after
the battery terminals have been
disconnected. In addition, if the
battery is replaced, the i-stop functions
must be verified. Consult an
Authorized Mazda Dealer.
When Driving
Start/Stop Engine
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▼i-stop OFF Switch
When pressing the switch, the i-stop
function stops and the i-stop OFF
switch indicator light turns on. If the
switch is pressed again, the i-stop
function becomes operational and the
i-stop OFF switch indicator light turns
off.
1. Indicator light
NOTE
If the engine is stopped with the i-stop
function stopped, the i-stop function
becomes operational again when the
engine is started the next time.
▼Vehicle Roll Prevention Function
Vehicles with the i-
stop function are
equipped with a vehicle roll prevention
function. This function prevents the
vehicle from rolling, such as when
releasing the brake pedal while on a
slope under the following conditions:
While engine idling is stopped
(prevents the vehicle from rolling
back)
When the engine restarts after
releasing the brake pedal (prevents
the vehicle's sudden movement due
to vehicle creep), sudden movement
of the vehicle is prevented by
controlling the brakes.
1. Release foot from brake pedal
2. Vehicle brake force maintained
3. Engine restarted
4. Acceleration
When Driving
Start/Stop Engine
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WARNING
Do not rely completely on the vehicle
roll prevention function.
The vehicle roll prevention function
is a supplementary function which
operates for a maximum of 2
seconds after releasing the brake
pedal and accelerating the vehicle
from an engine idling stop condition.
Over reliance on the system may
result in an unexpected accident if
the vehicle were to suddenly
accelerate. Before starting to drive
the vehicle, always confirm the safety
of the surroundings and operate the
selector lever, brake pedal, and
accelerator pedal appropriately.
Note that the vehicle may move
suddenly depending on the vehicle's
load or if it is towing something.
 Note that the vehicle may move
suddenly after the vehicle roll
prevention function is released while
the vehicle is under the following
conditions:
 The selector lever is in the N
position.
 If the selector lever is shifted to the
N position and the brake pedal is
released while the i-stop function
is operating, the brake force is
gradually released. To accelerate
the vehicle, release the brake pedal
after the engine restarts and shift
the selector lever to a position
other than the N position.
NOTE
When the vehicle is stopped on a
steep grade, the vehicle roll
prevention function does not
operate because engine idling is not
stopped.
The brake pedal response may
change, sound may occur from the
brakes, or the brake pedal could
vibrate from the operation of the
vehicle roll prevention function.
However, this does not indicate a
malfunction.
▼ i-stop Warning Light (Amber)/
i-stop Indicator Light (Green)
The i-stop system constantly monitors
the driver's operations, the vehicle's
interior and exterior environment, and
the operational status of the vehicle,
and uses the i-stop warning light
(amber) and i-stop indicator light
(green) to inform the driver of various
cautions and warnings.
NOTE
On vehicles equipped with the center
display, the i-stop operation status is
displayed in the fuel efficiency monitor
display.
Refer to the Fuel Efficiency Monitor
section in the Mazda Connect
Owner's Manual.
i-stop warning light (amber)
When the light is turned on
The light turns on when the ignition
is switched ON and turns off when
the engine is started.
If the i-stop warning light (amber)
remains on while the engine is
running , the battery performance
may have decreased. Have your
vehicle inspected by an Authorized
Mazda Dealer.
When Driving
Start/Stop Engine
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NOTE
A problem in the system may be
indicated under the following
conditions. Have your vehicle
inspected by an Authorized Mazda
Dealer.
The light does not turn on when the
ignition is switched ON.
The light continues to remain on
while the engine is running.
When the light is flashing
The light continues to flash if the
system has a malfunction. Have your
vehicle inspected by an Authorized
Mazda Dealer.
i-stop indicator light (green)
When the light is turned on
The light turns on while engine idling is
stopped and turns off when the engine
is restarted.
When Driving
Start/Stop Engine
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▼i-ACTIVSENSE Display*
Displays the system status.

Refer to Lane Departure Warning
System (LDWS) on page 4-98.
Refer to Blind Spot Monitoring
(BSM) on page 4-102.
Refer to Traffic Sign Recognition
System (TSR) on page 4-106.
Refer to Distance & Speed Alert
(DSA) on page 4-111.
Refer to Driver Attention Alert (DAA)
on page 4-113.
Refer to Mazda Rada
r Cruise Control
with Stop & Go function (MRCC
with Stop & Go function) on page
4-118.
Refer to Traffic Jam Assist (TJA) on
page 4-128.
Refer to Lane-keep Assist System
(LAS) on page 4-140.
Refer to Emergency Lane Keeping
(ELK) on page 4-141.
Refer to Smart Brake Support (SBS)
on page 4-148.
Refer to Cruise Control on page
4-199.
▼ Compass Display
The direction the vehicle is moving is
displayed in one of eight directions
while the vehicle is being driven.

Display
Direction
NN orth
SS outh
EE ast
WW est
NE Northeast
NW Northwest
SE Southeast
SW Southwest
When Driving
Instrument Cluster and Display
*Some models.4-27
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