Classification:

Reference:

EL22-017A

Date:

NTB23-003A

April 19, 2024

12 VOLT BATTERY CHARGING LOGIC SERVICE INFORMATION
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:

2023 ARIYA (FE0)

SERVICE INFORMATION
12 volt Lead Acid Battery (12 volt LAB) charging logic and best practices to ensure
12 volt condition is maintained.
The ARIYA has many advanced electronic systems that are heavily dependent on the 12
volt LAB. Under certain conditions, the 12 volt LAB may or may not receive charging by the
High Voltage battery (HV battery), through the DC/DC converter. Not understanding these
conditions can lead to a discharged 12 volt LAB.
The ARIYA has several key functions to ensure that the 12 volt LAB is properly tended, and
kept at a high State of Charge (SOC). Table 1 on page 2 shows multiple scenarios where
the DC/DC converter is providing a charge. Some of these key functions must be
understood in order to ensure the vehicle is able to maintain the 12 volt LAB.
The Extra Feeding function is an event where the DC/DC converter charges the 12 volt
LAB for 10 minutes. This event occurs every 24 hours, regardless of the 12 volt LAB’s
SOC, from the last ignition cycle and is intended to maintain the vehicle 12 volt LAB during
storage.
The Rescue Charging function is an event where the DC/DC converter will output a current
load, continuously for 2 hours, in order to recover the 12 volt LAB. During vehicle sleep, the
IPDM will wake up every 4 hours to check the 12 volt LAB’s voltage, and then go back to
sleep. If during one of these technical wake ups, the IPDM detects that the 12 volt LAB has
fallen below 11.2 volts it will initiate “Rescue Charging”.

Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are
properly trained individuals who have the equipment, tools, safety instruction, and know-how to do a job
properly and safely. NOTE: If you believe that a described condition may apply to a particular vehicle, DO
NOT assume that it does. See your Nissan dealer to determine if this applies to your vehicle.
1/4

IMPORTANT:
During PDI: Ensure that the vehicle is in Ready Mode. Because of how the DC/DC
convertor operates, it is important to keep the vehicle in Ready Mode, so that while
completing the PDI the 12 volt LAB does not discharge and cause the vehicle to become
inoperable.
Vehicle Lot Storage: Ensure that when vehicles are being stored, the HV Battery
percentage is kept at a minimum of 30%. This ensures that the Extra Feeding function will
occur and retain positive 12 volt LAB’s SOC.
Showroom Storage: Ensure the hood is kept closed while the vehicle is being displayed
on the showroom floor. As noted in Table 1 on pages 2-3, when the hood switch is in the
open position the DC/DC converter will not charge the 12 volt LAB.

Table 1
Key
position

Vehicle
status

Ready

Ready

IGN ON

IGN ON

HV battery
SOC

Vehicle condition

-

-

A/C ON

-

A/C OFF

-

Auto
ACC
(before
ready)

-

-

Auto
ACC
(after
ready)

-

OFF
Over 15%

Under 15%

2/4

Hood/Back door
condition
Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open
Not related
Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open
-

DC/DC
converter
LAB charge
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF

NTB23-003A

Table 1 continued
Key
position

Vehicle
status

Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open
Hood close
Hood open
Back door close
Back door open

DC/DC
converter
LAB charge
ON
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON

Hood close

ON

Hood open

OFF

Back door close

ON

Back door open

ON

Over 0%

Hood close
Hood open
Back door close
Back door open

ON
OFF
ON
ON

-

-

OFF

HV battery
SOC

Vehicle condition

During OTA
(except HV components)

Over 15%

During OTA (HV components)

Under 15%
-

During HV battery charging

-

Over 15%

During remote A/C

Under 15%
OFF

OFF
Extra Feeding
(LHD: 10min /
24h
RHD: 7 / 24h

Rescue Charging

Vehicles
built on or
before
June 12,
2023

Over 15%

Vehicles
built on or
after June
13, 2023

Over 0%

Vehicles
built on or
before
June 12,
2023
Vehicles
built on or
after June
13, 2023

Technical wake up
(every 4h)

3/4

Over 12%

Hood/Back door
condition

NTB23-003A

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
January 5, 2023

NTB23-003

April 19, 2024

NTB23-003A

DESCRIPTION
Original bulletin published
Table 1 revised

4/4

NTB23-003A