Classification:

Reference:

AN21-014

Date:

NTB21-053

June 18, 2021

2021 SENTRA; NO START DUE TO
BATTERY DISCHARGE THROUGH AUDIO UNIT
APPLIED VEHICLES:
APPLIED DATE:
APPLIED TRIM LEVEL:

2021 Sentra (B18)
Built between March 18, 2021 – June 2, 2021
SV and SR

IF YOU CONFIRM
The customer states that the engine would not crank, or cranked slowly and would not
start.

ACTION
1.

Test the vehicle's 12 volt battery using the Midtronics DSS-5000 and recharge, or
replace, the battery if necessary.

2.

Confirm the current audio head unit software is version 321.

3.

If the version is 321, update the audio head unit software to version 420.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you
will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it
contains information that is essential to successfully completing this repair.
Nissan 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.

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REQUIRED SPECIAL TOOL


One special tool, USB drive J-52727-1, has been shipped to each dealer (see Figure 1).



Do not use any other USB drive to perform the procedure in this bulletin.



Additional USB drives may be purchased from Tech•Mate: nissantechmate.com or
1-800-662-2001.

HINT: The update-software must be the only file on the drive.

Figure 1

Do not apply this software update to models outside of the APPLIED DATE
range. If applied outside of the APPLIED DATE range, the audio unit may be
damaged.


Damaged audio units, due to improperly following the following service procedure or
the software update being applied outside of the APPLIED DATE range, will not be
eligible for warranty claims.

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NTB21-053

SERVICE PROCEDURE

1.

Test the vehicle's 12 volt battery using the Midtronics DSS-5000.


Recharge, or replace, the battery if necessary.

Check Software Version

2.

Select Settings, located in the lower
right hand corner of the AV unit
display shown in Figure 2.

Figure 2

3.

Select Info.

Figure 3

4.

Select System Information.

Figure 4
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NTB21-053

5.

Select Version Information.

Figure 5

6.

Verify the Software Version is 321.


If the software version is 321,
proceed to step 7.



If the software version is not 321,
the service procedure is complete.

NOTE: Further diagnostic may be needed
that is not covered by this bulletin. Refer to
the appropriate section of the Electronic
Service Manual (ESM).

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Figure 6

NTB21-053

Download Software from Infotainment Downloader Tool

IMPORTANT: Before starting, make sure:

7.



The CONSULT PC is connected to the internet.



ASIST has been synchronized (updated) to the current date.

Insert special tool USB drive J-52727-1 into the CONSULT PC.


If the infotainment software has already been downloaded onto special tool USB
drive J-52727-1 from a prior service procedure, skip to step 16 on page 8.
HINT:
 Special tool USB drive J-52727-1 is the only USB drive approved for use
with this procedure.
 The update-software must be the only file on the USB drive.
 The update-software is estimated to take 10-15 minutes to download to the
USB drive.
 The update-software only needs to be downloaded once and can then be
used continuously on multiple Applied Vehicles.

8.

Open ASIST.

9.

Select Specialty Tools, and then select Infotainment Software Updates.

Specialty Tools
Infotainment Software Updates

Figure 7
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NTB21-053

10.

Select the check box next to infotainment update-software IVI0420 (Figure 8).

11.

Use the drop-down menu and select the location of the USB drive that was inserted in
step 7.

Version:

Check
box
D:\

USB drive
location

IVI0420

Infotainment
update-software

Drop-down
menu

Figure 8

12.

Select Download, and then wait for the download to complete.
HINT: The update-software is estimated to take 10-15 minutes to download to the
USB drive.

13.

Select OK when the message in Figure 9 is displayed.

Figure 9

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NTB21-053

14.

Once the transfer is complete, safely remove the USB drive from the CONSULT PC.
a.

From the PC toolbar, select the Safely Remove Hardware icon.
o The icon is on the toolbar, or can be found after selecting the arrow.

b.

Select the USB drive to be removed, and then remove the USB drive from the
CONSULT PC.
Follow the steps to safely remove the USB drive. If not followed, the
USB drive may corrupt the infotainment update-software.
o If you are not familiar with the process of safe USB drive removal, ask for
assistance at your dealer.

Safely Remove
Hardware icon

USB Drive (E:)

Arrow on toolbar

Figure 10

15.

Close all ASIST Infotainment Software Update screens.

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NTB21-053

Reprogram the Audio Unit

16.

Set the parking brake.

17.

Start the engine, and then wait 60 seconds for the system to load.
HINT: The engine needs to idle for the duration of the update to retain battery charge.

18.

Insert the USB drive with the
infotainment update-software into the
vehicle’s USB media port (Figure 11).


Do not remove the USB drive
during the update to the vehicle
until instructed to.

USB Media port

Figure 11

19.

Wait approximately 10-30 seconds for
the screen in Figure 12 to appear, and
then select OK.

Figure 12

20.

Review the software update
requirements, shown in Figure 13, and
then select Accept to start the
reprogramming.

Figure 13
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NTB21-053

21.

When the message shown in Figure
14 is displayed, remove the USB drive
from the USB port.
Do not remove the USB
drive until Figure 14 is displayed. If
removed prior to this screen being
displayed, the audio unit may be
damaged.

22.

Turn the ignition OFF.
Figure 14

23.

Open and close the driver door.

24.

Restart the engine.

25.

Allow the system to boot up
completely (approximately 30
seconds).


The Nissan logo will be displayed
during the reboot (Figure 15).

Figure 15
Confirm Software Version

26.

Select Settings, located in the lower
right hand corner of the AV unit
display shown in Figure 16.

Figure 16

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27.

Select Info.

Figure 17

28.

Select System Information.

Figure 18

29.

Select Version Information.

Figure 19

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30.

Verify the Software Version is now
420.


If the software version is NOT 420,
start this procedure over and verify
that the correct software shown in
step 10 on page 6 is downloaded.



If the software version is 420, the
reprogramming is complete.
Figure 20

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NTB21-053

CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
Use the appropriate OP Codes in the box below for Test & Charge Battery claims:
If test & charge battery and check audio unit software are required
DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Check Audio Unit Software
(No update required),
Test & Charge Battery (Battery OK)

(1)

RX0DAA

ZE

32

0.2

OR
If both test & charge battery and audio unit software update are required

(1)

DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Check Audio Unit Software,
Update Software,
Test & Charge Battery (Battery OK)

(1)

RX0EAA

ZE

32

0.4

Reference the electronic parts catalog and use the AV Control Assy (2591A-*****) as
the Primary Failed Part (PFP).

OR
Use the appropriate OP Codes in the box below for Replacement Battery claims:
If only a battery replacement is required
DESCRIPTION

PFP

Check Audio Unit Software
(No update required)

OP CODE

SYM

DIA

RX0AAA
(1)

Test & Charge Battery
Replace Battery

GB18AA

FRT
0.2

ZE

32

GB181A

(2)
(2)

OR
If a battery replacement and audio unit software update are required
DESCRIPTION
Check Audio Unit Software,
& Update Software
Test & Charge Battery

PFP

(2)

SYM

DIA

RX0BAA
(1)

Replace Battery
(1)

OP CODE

GB18AA
GB181A

FRT
0.3

ZE

32

(2)
(2)

Reference the electronic parts catalog and use the AV Control Assy (2591A-*****) as
the Primary Failed Part (PFP).
Reference the current Nissan Warranty Flat Rate Manual and use the indicated Flat
Rate Time (FRT).

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AMENDMENT HISTORY
PUBLISHED DATE REFERENCE
June 18, 2021

NTB21-053

DESCRIPTION
Original bulletin published

13/13

NTB21-053