PHEV models have a Sub Battery for backup power to
several systems when losing their electric supply from the
main battery. The Backup Power Supply Battery (BPS)
1. PCM
is located under the passenger-side foot support.
2. BPS Unit
Inspection at regularly scheduled maintenance intervals and
3. Sub Battery
additional charging is NOT necessary. If the Warning light/
DTC (P143B:00) is found based on the voltage down from the
BPS, replace the Sub Battery following the procedures in
the Workshop Manual.

PHEV Refueling Procedure
1. Press the Fuel lid opener switch on the cluster panel

2. "Prepairing for refueling" is displayed on the instrument
cluster.
3. Wait for instrument cluster to display "Ready to Refuel".
This will take 1~10 seconds.
4. Fuel Filler Lid unlocks after "Ready to Refuel" is displayed.
PHEV Instrument Cluster Battery Range
Battery range shows 1mi even enough Battery State of
Charge (SOC) is high.

NOTE: If the customer leaves the vehicle with the fuel lid
door open for 10-20 min, the on-board fuel tank vapor
recovery system will re-seal itself. Then when the customer
tries to refuel the vehicle, the pump dispenser may click off
due to pressure in the fuel tank.
To reset the system:
1. Install the fuel cap and close the fuel lid.
2. Turn the vehicle on with the START pushbutton and
when the READY indicator turns ON, turn the
vehicle off.
3. Press the fuel lid opener button and start the
process over again.
Under low temperature environment, the engine output
characteristics decrease significantly due to the
characteristics of Lithium-ion Battery (LiB). Therefore, even
though the SOC remains enough, when the motor output is
lower than the threshold of battery output (*), the drive
mode is switched from EV mode to HEV mode, and the
maximum driving distance display shows 1 mile (1 km) as
the minimum driving distance.
*: The threshold of battery output is 55 kW.

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This is caused by low ambient temperature and low battery
temperature. This is normal operation.
Always make sure to use an attachment of 85 mm height
when using the lift.

PHEV interfere with flat lift
The high voltage battery is laid out under the floor, so the
undercover is greatly extended downward. Therefore, when
trying to use a flat lift, there is a risk of deformation or
breakage at the undercover due to interference with the plate
of the lift.

Lift Positions

PHEV 355V and M Hybrid Boost Electric Fan Service
Caution
The Electric Fan in Engine compartment may operate during
Hood Open even at READY OFF based on some
system requirements of e-SKYACTIV (PHEV & M Hybrid
Boost). Therefore, prior to any services by opening the Hood,

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• Always make sure NOT to Charge (PHEV).
• Always make sure to set TCU (Telematics
Communication Unit) into communication restriction
mode.
• Always make sure to cancel Climate Control Timer
only for PHEV.
to avoid any unexpected Operation of Electric Fan for safety
in the service.

Engine Coolant Drain Location

A. Drain Plug for High Temperature (Engine Cooling)
B. Drain Plug for Low Temperature (EV System Cooling)
PHEV 355V HVAC Compressor Oil
PHEV 355V electric A/C compressor requires Polyolester
(POE) oil (part number KRY9-61-K39 -9U) due to the
electrical insulation performance. Polyalkyleneglycol (PAG)
oil (such as E1Y0-61-K39) cannot be used in an electric A/C
compressor.
Always make sure to use only Mazda Genuine POE oil
(KRY9-61-K39 -9U) for the electric A/C compressor. Using
any POE Oil other than Mazda Genuine POE oil may cause
electric leakage, deteriorated A/C performance, or damages
to A/C components.
NOTE:

CAUTION: A properly adjusted amount of fluorescent
agent (dye) is used during vehicle production.
• NEVER add fluorescent agent (dye) into the
refrigerant system, otherwise the electrical insulation
performance may deteriorate.

• NEVER use A/C refrigerant gas containing A/C
compressor oil and fluorescent agent (dye).

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• ETA for orderability of POE oil (KRY9-61-K39 -9U) late
April 2023.
• A properly adjusted amount of fluorescent agents is
used during vehicle production. Never add fluorescent
agent into the refrigerant system, otherwise the
insulation performance may deteriorate. Never use A/
C refrigerant gas containing A/C compressor oil and
fluorescent agent, or A/C compressor oil with
fluorescent agent.

• NEVER use A/C compressor oil with fluorescent
agent (dye).
Model

Part Number

Description

PHEV

KRYP-61-K39 9U

POE Oil for
Electric
Compressor

H3T

0000-77-540E-20

PAG Oil

Engine Oil Level Measurement (Infotainment Center
Display)
1. Make sure the hood is closed.
2. Start the engine.
3. Select “Information” on the Home screen to display the
vehicle status monitor.
4. Select “Vehicle Status Monitor”.

5. Select “Engine Oil Level”.

6. Select “Measure Engine Oil Level”.

7. Select "Start Measurement"

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Measurement of the engine oil level begins. Do not depress
the accelerator pedal during the measurement.

8. Oil Level Result is displayed
• Normal
• Low
• High

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FR-8EAT (PHEV and M Hybrid Boost) Front Engine Rear
Drive-8 Electrical Automatic Transmission)
FR-8EAT (No torque Converter) Unit to be installed in this
model, which is including a Motor in cases of PHEV & M
Hybrid Boost models.
Always make sure to only use ATF-A7, which is marked on
the Filler Plug. If the new FR-8EAT or the motor drive unit
needs to be replaced, the transmission including the motor
drive will need to be replaced as an assembly. The Oil Pan is
made from Resin which needs to be cared for to avoid
breakage. Never set the transmission on the oil pan or ATF
cooler, Damage could occur. Use support blocks as shown in
WSM.

Also, always make sure to use a nozzle tube (about 8mm
less than 10mm inner diameter of Overflow tube) and the
service mode to fill ATF-A7 into FR-8EAT through the Filler
Plug with the correct volume.
1. Transmission Case
2. Motor Housing
3. Bearing Cover Component

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Transfer Case for All-Wheel Drive
Transfer Case (A) to be installed in the All-Wheel
Drive model.
Always make sure to use ATF-A7 (Not to use SG1), which is
marked on the case near the Filler Bolt (B), to improve fuel
economy.

Owner's Manual -> Driving -> i-stop
i-stop (M Hybrid Boost Inline 6 cylinder)
i-stop is a function that automatically stops and restarts the
engine to improve fuel economy, reduce exhaust emissions,
and idling noise.
Stopping the Operation of the i-stop Function
The i-stop function stops and the i-stop OFF switch indicator
light turns on.
NOTE When the i-stop function is stopped and the engine is
stopped, the i-stop function becomes operational again the
next time the engine is started.

Indicator Light
Green

The i-stop indicator light (green) notifies the driver that the
engine is stopped by i-stop control.
Amber Flashing

If the i-stop control inhibits i-stop operation, the i-stop
warning light (amber) flashes to inform the driver.
• DTC stored
Amber Solid

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.
• LN3 Battery for vehicles equipped with i-stop.
• Battery disconnect/reconnect - Perform the battery

If the i-stop control inhibits i-stop operation, the i-stop
warning light (amber) turns ON solid to inform the driver.
• Ignition switched ON (check of i-stop control system)
• Engine stalls due to driver's operation while engine
is stopped by i-stop control

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condition initial setting (i-stop setting). Go to MGSS
BATTERY CONDITION INITIALIZATION SETTING (istop SETTING)
12V Batttery Charging / Testing

• Communication error to PCM and instrument cluster

MGSS -> 01-007/23

i-ACTIVSENSE

Owner's Manual -> Driving -> i-ACTIVSENSE

i-ACTIVSENSE Indicators

1. Forward Sensing System Operation State

Owner's Manual -> Driving -> i-ACTIVSENSE
Status Symbol

• Distance & Speed Alert (DSA)
• Smart Brake Support (SBS) [forward sensing function]
• Smart Brake Support (SBS) [collision avoiding assist
system during turning]

2. Forward Side Sensing System Operation State
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• Front Cross Traffic Alert (FCTA) (if equipped)

3. Lateral Side Sensing System Operation State
• Lane Departure Warning System (LDWS)
• Lane-Keep Assist System (LAS)
• Emergency Lane Keeping [road keep assist] (ELK)

4. Rear Side Sensing System Operation State
•
•
•
•

Blind Spot Monitoring (BSM)
Rear Cross Traffic Alert (RCTA) System
Smart Brake Support [Rear Crossing] (SBS-RC)
Emergency Lane Keeping [blind spot assist]

5. Rear Sensing System Operation State
• Smart Brake Support (SBS) [rear side sensing
function] (if equipped)

Smart Brake Support (SBS)

Owner's Manual -> Driving -> Smart Brake Support (SBS)
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SBS is a system designed to avoid collisions and reduce
damage in the event of a collision by controlling the brakes.
Sensors and camera equipped on the vehicle detect objects,
and operate brake control if there is a possibility of your
vehicle colliding with the object.
One part of the SBS functions when you are driving forward
and the other part functions when you are driving in reverse.
Forward drive detection
Forward drive detection has the following 4 functions.
1. Forward detection function*
The forward detection function is designed to assist the driver
in avoiding collisions with objects (vehicles
ahead, pedestrians, bicycles, and motorcycles) at the front
and to reduce damage in the event of a collision.
If there is a possibility of your vehicle colliding with a target
object at the front, you are notified of possible danger by a
screen display and a
warning sound. Furthermore, if the possibility of a collision
increases,
brake control is performed to avoid collision and reduce
damage in the event of a collision.
In addition, when the driver depresses the brake pedal, the
brakes are applied firmly and quickly to assist.

2. Turn-Across Traffic*
The Turn-Across Traffic is designed to assist the driver in
avoiding a collision with a vehicle approaching in the opposite
direction when making a left turn at an intersection and to
reduce damage in the event of a collision.
If there is a possibility of your vehicle colliding with a vehicle
approaching in the opposite direction when you make a left
turn at an intersection, you are notified of possible danger by
a screen display and a warning sound.
Furthermore, if the possibility of a collision increases, brake
control is performed to avoid collision and reduce damage in
the event of a collision.

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3. Front Crossing*
Front Crossing is designed to assist the driver in avoiding a
collision at an intersection and reduce damage.
If there is a possibility of a collision with a vehicle at an
intersection, brake control is performed to avoid a collision or
to reduce damage in the event of a collision.

4. Intersection accident avoidance assist function*
Intersection accident avoidance assist function is designed to
avoid collisions with objects (pedestrians and bicycles) when
making a left or right turn at an intersection and to reduce
damage in the event of a collision.
If there is a possibility of your vehicle colliding with a target
object when you make a left or right turn at an intersection,
you are notified of possible danger by a screen display and a
warning sound. Furthermore, if the possibility of a collision
increases, brake control is performed to avoid collision and
reduce damage in the event of a collision.

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Reverse drive detection
Reverse drive detection has the following 2 functions.
1. Rearward detection function*
The rearward detection function is designed to assist the
driver in avoiding collisions with objects at the
rear (obstructions and pedestrians*) and to reduce damage in
the event of a collision.
If there is a possibility of your vehicle colliding with a target
object at the rear, you are notified of possible danger by a
screen display and a warning sound. Furthermore, if
the possibility of a collision increases, brake control is
performed to avoid collision and reduce damage in the event
of a collision.

2. Rear Crossing*
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The Rear Crossing is designed to avoid collision and reduce
damage in the event of a collision with a vehicle approaching
from the rear sides.
If there is a possibility of your vehicle colliding with a vehicle
approaching from the rear sides, you are notified of possible
danger by a screen display and a warning sound.
Furthermore, if the possibility of a collision increases, brake
control is performed to avoid collision and reduce damage in
the event of a collision.

Secondary Collision Reduction*
The Secondary Collision Reduction reduces secondary
damage by
decelerating the vehicle when it is damaged in a collision to
the extent that the airbags are deployed while driving.
If a collision occurs to the extent that the airbags are
deployed while driving, the hazard warning lights flash to
alert surrounding vehicles and the brakes are controlled to
reduce damage in the event of a collision with an
obstruction or other object.

Mazda Radar Cruise Control with Stop & Go Function
System (MRCC)
MRCC is a system that reduces load on the driver through
constant speed and headway control. The function performs
headway control to maintain the distance with a vehicle
ahead at a constant preset speed without you having to
depress the accelerator or brake pedal.

Owner's Manual -> Driving -> Secondary Collision
Reduction

Owner's Manual -> Driving -> Mazda Radar Cruise Control
(MRCC)

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Speed Limit Assist
It is possible to set the vehicle speed of the speed sign
recognized by the FSC and map information to the MRCC
with one touch (RES button).
Note: Navigation SD Card is required

User Customization
•
•
•
•
•
•

Manual (On)
Off
0 mph (same as speed limit sign)
3 mph offset
5 mph offset
10 mph offset

Cruising & Traffic Support (CTS)
The CTS is a system that reduces the load on the driver while
the vehicle is driven on expressways or highways. The CTS
has the following 2 functions.

Owner's Manual -> Driving -> Cruising & Traffic Support
(CTS)
Constant speed/Headway control function
The function performs headway control to maintain the
distance with a vehicle ahead at a constant preset speed
without you having to depress the accelerator or brake pedal.