SA-069-22

BULLETIN NOTES
APPLICABLE MODEL(S)/VINS:
2022 MX-30
DESCRIPTION
This Service Information provides information on the AUXILIARY CHARGING SYSTEM for lead-acid battery and the
POWER SAVING MODE for e-SKYACTIV.
When the battery consumption exceeds a certain level while the main power is switched OFF, the lead-acid battery is
charged using the high voltage battery to prevent the lead-acid battery from discharging. The auxiliary charging is
activated when the accumulated time reaches 25 minutes. If the auxiliary charging is not finished, the system
accumulates the time count until 30 minutes, then activates the power saving mode. When the vehicle system is going
into the power saving mode, a warning message is indicated in the instrument cluster with a warning sound. An
accumilatiion of 5 minutes of driving or READY ON status deactivates the POWER SAVING MODE. For 2022 MX-30
with VINS higher than JM1DR**B***100474 (produced after October 19, 2021), there is a NEW POWER SAVING MODE
that needs 90 minutes of accumulated time to activate the mode
SYSTEM OUTLINE:
1. Auxiliary Charging System
When the accumulated time of the following situations exceeds 25 minutes, the lead-acid battery is charged using the
high voltage battery to prevent it from discharging. The time duration of the following situations will be added to the
accumulated time. A NEW POWER SAVING MODE function has been implemented as running change [for 2022 MX-30
with VINS higher than JM1DR**B***100474 (produced after October 19, 2021)] instead of the POWER SAVING MODE
shown below.
• After the power switch is switched OFF, until the vehicle electrical system goes into sleep mode.
• While the vehicle electrical system is awake by a customer’s operation while the power switch is OFF.
When the auxiliary charging is finished (10 minutes), the accumulated time is reset but the accumulated
time is not counted during the auxiliary charging.
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NOTE:
• The accumulated time is reset when the lead-acid battery is charged by other functions or operations for 45
minutes.
Normal charging
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Quick charging of high voltage battery
Climate control timer
Operation of the battery heater
When the state of charge (SOC) of the high voltage battery is 24% or lower, the auxiliary charging system is not
activated. When the SOC of the high voltage battery drops to 24% or lower during the auxiliary charging, the
charging will stop at that point.
Examples of customer operations that awake the vehicle electrical system while the power is switched OFF:
opening the doors
opening the liftgate
depressing the brake pedal
pressing the power switch
The transition time is also added to the accumulated time when the power switch is turned to ON (READY OFF) or
ACC by pressing the power switch from the OFF status.
The accumulated time is reset when the system goes into the power saving mode, then accumulated time
continues to be counted.
The battery terminal is disconnected.
The room fuse is removed.
The auxiliary charging is finished.
5 minutes passed after the power switch is switched on (READY ON).
The following is a table of peculiar notations for BEV.
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○
○
•
•
○
○
○
○
•
•
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○
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○
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e-SKYACTIV
SKYACTIV-G
Main power switched ON (READY ON)
Engine running
Main power switched ON (READY OFF)
Ignition switch ON
Main power switched OFF
Ignition switch OFF
2. Activation of POWER SAVING MODE
When the accumulated time exceeds 30 minutes, the vehicle electrical system goes into the power saving mode to
reduce the battery consumption. The time duration of the following situations will be added to the accumulated time:
• After the power switch is switched off, until the vehicle electrical system goes into sleep mode.
• While the vehicle electrical system is awake by a customer’s operation during the power switch is off.
• NEW POWER SAVING MODE needs 90 minutes of accumulated time to activate the mode.
NOTE:
• The auxiliary charging is activated when the accumulated time reaches 25 minutes. If the auxiliary charging is not
finished, the system accumulates the time count until 30 minutes, then activates the power saving mode.
• When the power switch is switched ON or ACC by pressing the power switch, the system transition time is also
accumulated.
• The accumulated time will be added before the system transitions to the power saving mode unless the
accumulated time is reset.
• The accumulated time is reset when the battery terminal is disconnected or the room fuse is removed.
3. Warning message
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Under the following conditions, the warning message is indicated in the instrument cluster with the warning sound when
the vehicle system is going into the power saving mode or after the system went into power saving mode and is waking
up by owner operation.
• Accumulated ti
me reaches 30
min (POWER S
AVING MODE)
or 90 min (NEW
POWER SAVIN
G MODE).
• The following o
perations are pe
rformed during t
he power savin
g mode
Opening
the liftgat
e
Depressi
ng the br
ake peda
l
Pressing
the powe
r switch
Operatio
ns that w
ake-up th
e networ
k
○
+
○
○
○
NOTE:
• The images above are examples of the warning message, actual message may vary.
• During in the power saving mode, opening the door will not result in the warning message because it will not wake
up the system.
• When the power switch is switched on (READY ON) while the warning message is displayed, the message will be
cleared.
4. Deactivation of POWER SAVING MODES
Deactivation of POWER SAVING MODE
Continuous 5 minutes of driving or READY ON status deactivates the power saving mode. If READY ON status proceeds
for shorter than 5 minutes, the power saving mode remains until continuous 5 minutes of READY ON status is achieved
in following drive cycles.
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Activation and deactivation of the power saving mode depends only on the accumulated time described in "2 Activation
of POWER SAVING MODE” and 5 minutes of continuous READY ON status. The lead-acid battery recharging does not
deactivate the power saving mode. To force the deactivation, disconnect the battery terminal or remove the room fuse.
Deactivation of NEW POWER SAVING MODE
Continuous 3 seconds of driving or READY ON status deactivates the new power saving mode. If READY ON status
proceeds for shorter than 3 seconds, the new power saving mode remains until continuous 3 seconds of READY ON
status is achieved in following drive cycles.
Activation and deactivation of the new power saving mode depends only on the accumulated time (Activation of POWER
SAVING MODE) and 3 seconds of continuous READY ON status. The lead-acid battery recharging does not deactivate
the new power saving mode. To force the deactivation, disconnect the battery terminal or remove the room fuse.
5. Affected functions by POWER SAVING MODE
The power saving mode restricts the following functions while the power switch is OFF:
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Welcome display in the multi-information display when opening the doors.
Door-ajar, liftgate-ajar and trunk lid-ajar warning indication lights in the multi-information display.
Keyless Walk Away Auto-Lock.
Following features of the Connect Service if equipped.
Vehicle status alert
Remote engine start, remote door lock/unlock, remote hazard light on/off
Vehicle finder (vehicle location mapping function is available.)
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