QUALITY ACTION
CAMPAIGN BULLETIN
Display Control Unit (DCU) Software Update
Retailer Inventory
Reference: PC677
Date: January 17, 2019
Attention: Retailer Principal, Sales, Parts and Service Managers
Affected Models/Years:

Affected
Population:

Retailer
Inventory:

SERVICE COMM
Activation date:

Stop Sale
In Effect

NA

5,044*

January 17, 2019

NO

MY2019 QX50 (J55)

*~ 10% of affected units are currently in transit
***** Retailer Announcement *****
INFINITI is conducting a quality action to update the Display Control Unit (DCU) software on 5,044
specific 2019 INFINITI QX50 vehicles in new vehicle inventory. The current software may allow the
DCU system to slow down or freeze when a call is initiated using voice recognition while the phone
menu was displayed on the upper screen.
Affected vehicles are not subject to stop sale and are either currently in retailer inventory or assigned and
in transit to the retailer. INFINITI requests retailers to remedy all affected inventory vehicles prior to sale
to ensure client satisfaction.
***** What Retailers Should Do *****
PLEASE FOLLOW THE ATTACHED REPAIR INSTRUCTIONS:
1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service
History – Open Campaigns I.D. PC677
 Refer to IPSB 15-286 for additional information
 Please continue to check newly arriving inventory for campaign applicability.
2. Use the attached procedure to update the Display Control Unit (DCU) software.
3. The service department should submit the applicable warranty claim for the action performed so it
can be closed on Service Comm and release the vehicle.
***** Retailer Responsibility *****
It is the retailer’s responsibility to check Service Comm or DBS National Service History – Open
Campaign using the appropriate campaign I.D. for the quality action on each affected vehicle currently in
new vehicle inventory. INFINITI requests retailers to perform this remedy on new vehicles in inventory
prior to sale to ensure client satisfaction.

PC677 | Original Document

PC677 – 2019 QX50 DISPLAY CONTROL
UNIT (DCU) SOFTWARE UPDATE
REQUIRED SPECIAL TOOL




One of special tool USB drive J-52727 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 (1-800-662-2001).

Figure 1
SERVICE PROCEDURE
Check the DCU P/N
IMPORTANT: Before starting, make sure:


1.
2.
3.
4.

ASIST is connected to the Internet.
ASIST on the CONSULT PC has been synchronized (updated) to the current date.

Connect the CONSULT PC and plus VI to the vehicle.
Start C-III plus.
Turn ON the ignition.
Wait for the plus VI to be recognized / connected.
 The serial number will display when the plus VI is recognized / connected.

5. Select Diagnosis (One System).

Step
5

Step
4

Figure 2
1/12

6. Select MULTI AV.

Step
6

Figure 3

2/12

7. Select the ECU Identification tab.
8. When the screen in Figure 4 displays, confirm this bulletin applies as follows:
a. Write down the ECU PART NUMBER on the repair order.
NOTE: This is the current DCU part number (P/N).

Step
7
Step
87

XXXXX

Figure 4

b. Compare the P/N you wrote down to the P/Ns in the CURRENT DCU PART NUMBER column in
Table A below.


If there is a match, this bulletin applies. Go to the next page, Update Display Control Unit.



If there is not a match, this bulletin does not apply. Refer to ASIST for further diagnosis.

Table A
MODEL
2019 QX50

CURRENT DCU PART NUMBER: 283875NA0A, 5NA0B, 5NA0C
5NA2A, 5NA2B, 5NA2C
5ZA0A, 5ZA0B

3/12

Update Display Control Unit
IMPORTANT: Before starting, make sure:


ASIST is connected to the Internet.



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

9. Insert special tool USB drive J-52727 to an ASIST Station.
NOTE: Special tool USB drive J-52727 is the only one approved for use with this procedure.
10. Open ASIST.

11. Select Specialty Tools, and then select Infotainment Software Updates.

Specialty Tools
Infotainment Software Updates

Figure 5

4/12

12. Select the check box next to the correct update software package below (also refer to Figure 6 below).
CAUTION: Failure to select the correct update software package may result in needing to replace the DCU.
NOTE: Replacement of an incorrectly updated DCU is not covered under warranty.
MODEL

DESCRIPTION

2019 QX50

IT5004

13. Select Continue, and then wait for the download to complete.

Version:

Check
box
Step
12

Step
13

Figure 6

5/12

14. Once the download is complete, select the USB drive for update software package transfer.


See example in Figure 7. The drive selection on your PC may be different.

15. Select Transfer, and then wait for the transfer to complete (see Figures 7 and 8).

Step
15

IT500X

Step
14

Figure 7

16. Select OK.
E:\ Copy Process Completed

Step
16
Figure 8

6/12

17. Once the transfer is complete, safely remove the USB drive from the ASIST Station.
a. From the PC toolbar, select the Safely Remove Hardware icon.


The icon is on the toolbar, or to be found after selecting the arrow.

b. Select the USB drive to be removed, and then remove the USB drive from the ASIST Station.
CAUTION: Failure to safely remove the USB drive may corrupt the update software.


If 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 9

18. Close all ASIST Infotainment Software Update screens.

19. Start the engine, and then wait 60 seconds for the system to load.
NOTE: The engine needs to idle for the duration of the update.

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20. Open the Settings Menu and then select
Bluetooth.


The settings menu is accessed by selecting
the settings app icon on the lower display.

Figure 10

21. Select Connect Device from the Bluetooth
Settings menu.
NOTE: If no connected devices are present,
Figure 17 will be displayed.

Figure 11

22. Is a device present in the Device List?


YES: Select a device and then proceed to
step 23.



NO: Proceed to step 25.
IMPORTANT: All paired devices must be
deleted before proceeding to step 25.

Example of two
devices present
Figure 12

23. Select Delete and confirm the screens in Figure
14 and then Figure 15 are displayed.

Figure 13

8/12

NOTE: The following screens will be displayed
while a paired device is being deleted.


The first screen will show “Deleting…”
followed by the device name.

Figure 14



The second screen will show information
regarding repairing the BT device.

Figure 15

24. Are any devices still present in the Device List?


YES: Select a device and then perform step
23 and 24 again.



NO: Proceed to step 25.
IMPORTANT: All paired devices must be
deleted before proceeding to step 25.

Example of one
device present
Figure 16

 Figure 17 will be displayed when all devices
have been deleted.
Example of no
devices present
Figure 17
9/12

25. Connect the USB drive with update software package into the vehicle’s USB media port.
CAUTION: Charging ports are marked in the vehicle with a “lightning bolt” symbol. Do not insert the USB
drive into a charging port. If used, the update software and/or USB drive may become damaged. Only
insert the USB drive in a USB media port.

USB media
port symbol
DO NOT USE
USB ports with a
“Lightning bolt!”

Figure 18
26. Wait approximately 10-30 seconds for the screen in Figure 19 to appear.

27. Select Yes to begin the software update.

Step 27

Figure 19

10/12

28. Wait for the update to complete.


Follow the on-screen instructions while waiting.

NOTE: The update lasts 10-70 minutes.

Figure 20

29. Once the update is complete, remove the USB drive, and then select Restart.

Step 29
Figure 21

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CAUTION: Steps 30-33 must be completed. If they are not completed, the update may become
corrupted.
30. Allow the reboot to complete (2-5 minutes after selecting Restart).
31. Once the reboot has completed, turn OFF the engine, and then wait three (3) minutes.
32. Start the engine and allow the vehicle to run for two (2) minutes.
33. Turn OFF the engine.

CLAIMS INFORMATION
Submit claim using the following claims coding:
Work Order Line Type: “CM” Campaign
Campaign: PC677
Claim Type:
PNC:
Symptom:
Diagnosis:
Description:
Perform DCU Software Update

CM
PC677
ZZ
99
Op Codes Flat Rate Time
PC6770

0.5 Hrs.

12/12

Parts Required
on claim

Expense Code
Required

No

N/A