Classification:

Reference:

Date:

EL19-059a

ITB19-042a

April 27, 2020

INFINITI; AV CONTROL UNIT REPLACEMENT PROCESS
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Please discard previous versions of this bulletin.

APPLIED VEHICLES:

2020 Q50 (V37)
2020 Q60 (V37)
2020 QX50 (J55)
2020 QX80 (Z62)

IF YOU CONFIRM
The AV control unit needs to be replaced on an APPLIED VEHICLE.
ACTION
IMPORTANT: The AV control unit for the Applied Vehicles is new, different from the previous model year, and
requires a new procedure when replacing. If the following steps are not followed completely, all features will not
work as intended.
1. Read and save the VIN
2. Read and save the configuration
3. Replace the AV control unit
4. Reprogram the AV control unit
5. Configure the AV control unit
6. Write the VIN to the AV control unit
IMPORTANT: Procedures 4-6 above must be performed in the order shown below.
ORDER OF COMPLETION
REPROGRAM
AV control unit

CONFIGURE
AV control unit

WRITE VIN
to AV control unit

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.
Infiniti 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 Infiniti retailer to determine if this
applies to your vehicle.

1/30

SERVICE PROCEDURE

Perform the following before starting the reprogramming procedure to prevent damage to the control unit:
 Connect the AC Adapter to the CONSULT PC.
 Connect the CONSULT PC to the internet (Wi-Fi or cable).
 Ensure ASIST on the CONSULT PC has been synchronized (updated) to the current date and all C-III
plus software updates (if any) have been installed.
 Turn OFF all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC during
reprogramming, the reprogramming may be interrupted.
 Turn OFF all vehicle electrical loads.
 Connect a battery maintainer or smart charger, set to reflash mode or a similar setting, to ensure the
battery voltage stays between 12.0 V and 15.5 V.

READ AND SAVE THE VIN
NOTE: If the VIN data cannot be saved, proceed to step 19 on page 9. You will be instructed to manually enter
the VIN later in the procedure.

1.

Select Diagnosis (One System).

Figure 1

2/30

ITB19-042a

2.

Select MULTI AV.

Figure 2

3.

Select Work support.

4.

Select SAVE VIN DATA.

5.

Select Start.

Figure 3

3/30

ITB19-042a

6.

Select Start.

Figure 4

7.

Wait for the Current status to show Completed, and then select End.

Figure 5

8.

Select Home.

4/30

ITB19-042a

READ AND SAVE THE CONFIGURATION

9.

Select Re/programming, Configuration.

Figure 6

NOTE: C-III plus screens for steps 10-13 are not shown.
10.

Read the on-screen Precaution and select Confirmed Instructions at the bottom of the screen.

11.

Select Next.

12.

Confirm the vehicle details are correct for the vehicle you are working on, and then select Confirm.

13.

Confirm the correct VIN, and then select Confirm.

5/30

ITB19-042a

14.

Select MULTI AV.

Figure 7

15.

Select Before ECU Replacement.

Figure 8

6/30

ITB19-042a

16.

Write down all Setting Values.
HINT: Use arrows to view all Setting Value screens.

Figure 9

17.

Select Save.

Figure 10

7/30

ITB19-042a

18.

Select End.

XXXXXXXXXX XXXXXX
XXXXXXXXXX

XXXXXXXXX
XXXXXXXXXXXXXXX

Figure 11

8/30

ITB19-042a

REPLACE THE AV CONTROL UNIT
19.

Replace the AV control unit.


Refer to the ESM, section DRIVER INFORMATION & MULTIMEDIA > AUDIO, VISUAL &
NAVIGATION SYSTEM > INFINITI INTOUCH > REMOVAL AND INSTALLATION > AV
CONTROL UNIT.

REPROGRAM THE AV CONTROL UNIT
20.

Select Re/Programming, Configuration.

Figure 12
NOTE: C-III plus screens for steps 21-25 are not shown.
21.

Select Confirmed instructions.

22.

Select Next.

23.

Select Confirm.

24.

Confirm the correct VIN is populated.

25.

Select Confirm.

9/30

ITB19-042a

26.

Select Other Operation.
NOTE: If the VIN could not be read/saved, proceed to step 27.

XXXXXXXXXXXXXXXX

XXXXXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX XXXXXX
XXXXXXXXXXXXX

Figure 13

27.

Select MULTI AV.

Figure 14

10/30

ITB19-042a

28.

Select After ECU Replacement from the Programming (Blank ECU) menu.

Figure 15

29.

Select Next.

Figure 16

11/30

ITB19-042a

30.

Select Manual selection.

Figure 17

31.

Use the arrows to scroll to the next page, and then select Next.

Figure 18

12/30

ITB19-042a

32.

Review Table A, below, and find the applicable ROM Data ID for the vehicle you are working on.
Table A
Model
2020 Q50
2020 Q60
2020 QX50
2020 QX80

System
BOSE

ROM Data ID
283C2 6HL5C

NON-BOSE

283C2 6HL5D

BOSE

283C2 5CR0B

NON-BOSE

283C2 5CR0A

BOSE

283C2 5NY1A

NON-BOSE

283C2 5NY0A

BOSE

283C2 6JF0B

NON-BOSE

283C2 6JF0A

33.

Use the arrows to scroll to locate and select the applicable ROM Data ID.

34.

Select Next.

Figure 19

13/30

ITB19-042a

35.

Confirm the information matches the vehicle you are working on, and then select Next.

XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX XXXXXX

Figure 20

36.

Follow the on-screen instructions, and then select Next.

Figure 21

14/30

ITB19-042a

37.

Confirm the battery voltage is within acceptable limits, and then select Start.

Figure 22

38.

Select your user group from the drop down menu.