Classification:

Reference:

Date:

AN19-045B

ITB19-029B

April 21, 2021

TELEMATICS (IVC) SERVICE INFORMATION
This bulletin has been amended. See AMENDMENT HISTORY on the last page.
Discard all previous versions of this bulletin.

APPLIED VEHICLES:

APPLIED SYSTEMS:

2020-2021 Q50 (V37)
2020-2021 Q60 (V37)
2020-2021 QX50 (J55)
2022 QX55 (J55X)
2020-2021 QX80 (Z62)
Vehicles equipped with factory Navigation system

NOTE:
 If the client experiences Wi-Fi hotspot related concerns only, DO NOT replace the TCU. Have the client
contact the AT&T Support line at 1 (888) 719-7242.


For QX55 vehicles only: If the client experiences other telematics related concerns, prior to any part
replacement, confirm that the vehicle is enrolled in Infiniti InTouch™ Services, and is subscribed to the
service(s) the client states is not functioning. See QX55 Vehicles - Verify Infiniti InTouch™ Services
Enrollment and Subscriptions (if needed) on page 17.



See ITB12-011 for models built before those listed above.

SERVICE INFORMATION
The Applied Vehicles are equipped with a wireless communication device called a Telematics Communication
Unit (TCU). The TCU communicates with the Infiniti Data Center to provide various security and convenience
services.
This bulletin contains important service procedures that must be performed properly in order to set-up and
maintain the telematics system for the Applied Vehicles.
 An Order of Completion table has been provided on the next page that lists the model and year-specific
steps required to successfully configure a TCU after it has been replaced.
 A check-off sheet has been provided on page 15 to print and check off steps as they are performed.
Please staple the completed check-off sheet to the repair order.

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.
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TABLE OF CONTENTS:


Required Actions by Model and Year ..……………………………………… page 2



TCU Replacement ………………………………………………………………. page 3



Check-Off Sheet …………………………………………………….…………. page 15



Manually Enter VIN Data (if needed)…………………………………………. page 18

REQUIRED ACTIONS

IMPORTANT: After TCU replacement (steps 1-14):


If all of the steps below are not completed, telematics services will not operate properly.



Follow all of the steps in this bulletin and use the check-off sheet provided at the end of this bulletin
(page 15).



If the TCU is replaced and the steps were not followed, the warranty claim will be denied.

ORDER OF COMPLETION

1st

2nd

3rd

Model

Configure TCU

Write VIN

Register Intelligent Keys

2020-2021 Q50
2020-2021 Q60
2020-2021 QX50
2022 QX55
2020-2021 QX80





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ITB19-029B

TCU REPLACEMENT
Each TCU is registered to a specific Vehicle Identification Number (VIN). TCUs cannot be
“swapped” between vehicles. Once a TCU is registered to a vehicle, the TCU cannot be used in another
vehicle.
IMPORTANT:


During this procedure, Intelligent Key Registration must be performed. You MUST have ALL client
keys collected.



The new/replacement TCU must come from Nissan North America parts supply.



TCU Configuration is required after replacement. Refer to step 15 on page 6.

Configuration must be done prior to performing Write VIN. If Write VIN is performed prior to
configuration, the TCU may not function properly and might need replacement. The warranty claim will be
denied if this is not followed correctly.


Write VIN must be performed after the new/replacement TCU is installed in the vehicle.

Perform the following before saving the VIN data and configuration to prevent damage to the TCU.


Connect the AC Adapter to the CONSULT PC.



Connect the CONSULT PC to the Internet via Wi-Fi or a network 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 or VI
during reprogramming, the reprogramming may be interrupted.



Turn OFF all vehicle electrical loads.



Turn ON the hazard warning lights.



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.

Save VIN Data from Original TCU
1.

Set the parking brake.

2.

Connect the C-III plus VI to the vehicle.

3.

Turn the ignition ON.

4.

Launch C-III plus on the CONSULT PC.

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ITB19-029B

5.

Select Diagnosis (One System).

Figure 1

6.

Select IVC.

Figure 2

IVC

7.

Select Work Support.

Figure 3
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ITB19-029B

IVC

8. Select SAVE VIN DATA.

9. Select Start.

Figure 4

10.

IVC

Select Start.
NOTE: If the VIN data cannot be
saved, skip to step 12 on page 6.
You will be instructed to manually
enter the VIN at step 26.

Figure 5

IVC

11.

Select End.

Figure 6
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ITB19-029B

Remove the Original TCU
12.

Remove the TCU from the vehicle.


Refer to the ESM for removal information: DRIVER INFORMATION & MULTIMEDIA > AUDIO
VISUAL & NAVIGATION SYSTEM > REMOVAL AND INSTALLATION > TCU

Install the New TCU
13.

Write down the part number listed on the
new / replacement TCU (Figure 7).


14.

The TCU part number will be needed
later in this bulletin.

Install the new / replacement TCU into the
vehicle.


Refer to the ESM for installation
information: DRIVER INFORMATION &
MULTIMEDIA > AUDIO VISUAL &
NAVIGATION SYSTEM > REMOVAL
AND INSTALLATION > TCU.

Figure 7

Configure the TCU
15.

Select Re/programming, Configuration.
NOTE: C-III plus screens for steps 16-18 are
not shown.

16.

Read the precautions on C-III plus screen and
then select Next.

17.

Select the model and model year.

18.

Select Select, and then select Confirm.

Figure 8

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ITB19-029B

19.

Select IVC.

Figure 9

20.

Select After ECU Replacement.

Figure 10

21.

Select Manual selection.

Figure 11

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ITB19-029B

22.

Select the applicable Type ID.
VEHICLE
2020-2021 Q50

SYSTEM
-

TYPE ID
28277-6HM0A

2020-2021 Q60

-

28277-5CR0A

2020-2021 QX50

-

28277-5NY0A

With Remote Engine Start

28277-5VG0A

Without Remote Engine Start

28277-5VG4A

-

28277-6JE0A

2022 QX55
2020-2021 QX80

NOTE: If C-III plus automatically selects the Type ID, there will be no options shown under Type ID (see
Figure 12). Skip to step 24.

23.

Select Next.

24.

Select OK.

Figure 12

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ITB19-029B

Write the VIN to the TCU

25.

Navigate to IVC Work support.


Refer to steps 1-7 on pages 3-4.

IVC

26. Select WRITE VIN (SAVED DATA).
NOTE: If VIN DATA could not be saved in
step 10, skip to Manually Enter VIN Data
(if needed) on page 18.