Save the VIN DATA using C-III plus (page 7).

3.

Remove the original TCU from the vehicle (page 9).

4.

Deactivate (unregister) the original TCU by calling INFINITI CONNECTION™ Call Center
(page 17).

5.

Activate (register) the replacement TCU by calling INFINITI CONNECTION™ Call Center
(page 17).

6.

Install the replacement TCU in the vehicle (page 18).

7.

Turn ON the replacement TCU using C-III plus (page 18).

8.

Write the VIN DATA using C-III plus (page 18).

1/20

SERVICE PROCEDURE

Turn OFF the TCU
1. Connect the C-III plus VI to the vehicle.
2. Set the parking brake.
3. Turn the Ignition ON, but do not start the vehicle.
4. Launch C-III plus on the CONSULT PC.
5. Select Diagnosis (One System).

Step
5

Figure 1

2/20

6. Select TELEMATICS on page 2 of the “All systems” list.

Step
6

Figure 2

7. Select Work support.

Step
7

Figure 3

3/20

8. Select TCU ACTIVATE SETTING.
9. Select Start.

Step
8

Step
9

Figure 4

10. Select Start.

Step
10

Figure 5

4/20

11. Select Off to turn OFF the TCU.
12. Select End.

Step
11

Step
12

Figure 6

13. Select Start.

Step
13

Figure 7

5/20

14. Select Start.

Step
14

Figure 8

15. Confirm “Off” is displayed in the Current status field.

Step
15

Figure 9

6/20

Save VIN Data
1. Select SAVE VIN DATA.
2. Select Start.

Step
1

Step
2

Figure 10

3. Select Start.

Step
3

Figure 11

7/20

4. Select End.

Step
4

Figure 12

8/20

Remove the TCU from the Vehicle.

1. Remove both the left and right center console side
finishers.
NOTE: Driver side shown In Figure 13 and 14.
Passenger side similar.

Center console
side finisher

Figure 13

2. Confirm that the metal clips for the left and right center console side finisher are in place.


If the clips were detached, remove them from the center console and reattach to the center console
side finishers.

Metal clips

Figure 14

9/20

3. With the Parking brake set, place the shift selector
into “neutral” (N).

Shift knob

4. Remove the shift knob as follows:
Console lid
assembly

Figure 15

Retaining clip

a. Pull the shift boot collar down (Figure 16).
b. Remove the retaining clip (Figure 16).
c. Replace the retaining clip back onto shift knob.
Shift boot
collar

Figure 16

10/20

5. Remove the console upper finisher as follows:

Console upper
finisher

a. Raise the console lid assembly (partially
shown in Figure 15).
NOTE: Figure 17 is shown with the console lid
assembly raised.

Figure 17

Console upper
finisher
b. Lift the console upper finisher at the rear to
start to unclip it from the center console
assembly.
c. Work forward to detach each clip and remove
the console upper finisher.

Figure 18
6. Remove the two screws (Figure 19) that retain the console finisher assembly (Figure 20) that are to the left and
the right of the seat heater buttons, under the audio controls.

Figure 19
11/20

Console finisher
assembly

7. Remove the console finisher assembly from center
console assembly as follows:
a. Lift the rear of the console finisher assembly
gently with equal pressure, as shown in Figure
20, to detach all clips.
b. Lift the console finisher assembly off of the
shift selector.

Figure 20
c. Disconnect all harnesses attached to the console finisher assembly (Figure 21).
d. Disconnect the harness from the console finisher assembly to shift selector assembly (Figure 21).

Disconnect harnesses

Shift selector assembly

Figure 21

12/20

Step 7d

8. Remove the instrument finisher C (Figure 23) and instrument finisher D (Figure 22):
a. Gently detach the bottom of each instrument finisher (“Pull here to start” in Figure 22 and 23) by pulling
toward the rear of the vehicle.


Only pull far enough to unclip from the instrument panel.

b. Open a gap between the instrument finisher and the instrument panel so that enough space is present to
allow a finger to be inserted into the gap just below the vents (Figure 22).
c. Remove both instrument finishers one at a time.

Instrument
finisher D

Instrument
finisher C

Pull here to start

Pull here to start
Figure 22

Figure 23

9. Remove the integral switch (Figure 24) as follows:
a. Remove the two screws at the bottom of the integral switch (Figure 24).

Integral switch

Two screws

Figure 24
13/20

b. Pull the integral switch away from the
instrument panel at the bottom (Figure 25) and
then down to detach upper clip (Figure 25).

Figure 25

c. Disconnect the three harness connectors
(Figure 26) attached to the integral switch.

Figure 26

14/20

10. Remove the A/V & NAVI control unit assembly (Figure 27):
a. Remove the four screws that attach the A/V & NAVI control unit assembly to the instrument panel.

A/V & NAVI
control unit
assembly

Four screws

Figure 27

A/V & NAVI
control unit
assembly
b. Pull the A/V & NAVI control unit assembly
straight back to gain access to attached
harness connectors.
c. Disconnect all harness connectors from the
rear of the A/V & NAVI control unit assembly.

Figure 28

15/20

11. Remove four T20 screws and remove the TCU from the A/V & NAVI control unit assembly (Figure 29).

A/V & NAVI control unit assembly

T20 screws

TCU

Figure 29

TCU
Bracket

12. Remove the two brackets from the original TCU
and transfer to the new TCU (Figure 30).


Each bracket is attached by two T20 screws.



The brackets are left and right specific,
transfer one side at a time.



One side shown in Figure 30. The other side is
similar.

T20 screws
Figure 30

Proceed to “Deactivate the Old TCU and Activate the new TCU” on the next page.

16/20

Deactivate the Old TCU and then Activate the new TCU
IMPORTANT: Steps 1 and 2 below must be performed AFTER the original TCU is removed from the vehicle
and BEFORE the replacement TCU is installed.
1. Collect and have ready the following information:
 VIN.
 International Mobile Equipment Identity Number (IMEI) of the original TCU. This
number is located on the TCU.
 IMEI Number of the replacement TCU. This number is located on the TCU.
 Serial Number of the replacement TCU. This number is located on the TCU.

LABEL ON TCU

Figure 31
2. Call the INFINITI CONNECTION™ Call Center at 1-800-334-7858, press “1” and listen for additional applicable
INFINITI retailer prompts to replace a TCU. (Hours of operation are listed at the bottom of the page.)
NOTE: The phone number shown above is for TCU activation and deactivation ONLY. The Support Center
agent is unable to assist with matters unrelated to TCU activation and deactivation.
During this call:
 You will be asked for your name, dealership name, and all of the information collected in step 1.
 The Support Center agent will deactivate the original TCU and activate the replacement TCU.
IMPORTANT: Step 2 MUST be performed to activate the replacement TCU. If it is not performed the TCU will not
be able to communicate with the Infiniti Connection Global Data Center.
Infiniti Connection Call Center – Hours of Operation (Central Time Zone)
Monday – Friday: 7AM – 10PM

Saturday: 8AM – 5PM

Special Holiday Hours:
Closed Thanksgiving, Christmas, and New Years Day
Christmas Eve: 7AM – 7PM
New Years Eve: 7AM – 7PM
17/20

Install Replacement TCU


Perform steps 1-12 of Remove the TCU from the Vehicle procedure on page 9, in reverse order, to install.

Turn TCU ON


Perform steps 1-15 of Turn OFF the TCU procedure, starting on page 2, to turn the TCU ON and then
confirm the Current status field shows “On”.

Write VIN Data
1. Select WRITE VIN (SAVED DATA).
2. Select Start.

Step
1

Step
2

Figure 32

18/20

3. Select Start.

Step
3

Figure 33

4. Select End.

Figure 34

Step
4

IMPORTANT:
 Wait at least 2 minutes after the ignition is turned ON before checking for DTCs. If DTCs are checked prior
to this a U1000 may be stored.
 After writing VIN to new TCU, confirm SOS light on overhead console is illuminated solid.
19/20

PARTS INFORMATION
Description
Telematics Control Unit

PART NUMBER
283B0-3JA7A

Quantity
1

CLAIMS INFORMATION
Submit a Campaign (CM) line claim using the following claims coding:
CAMPAIGN (“CM”) ID
DESCRIPTION

OP CODE

FRT

PC451

Replace Telematics Control Unit
($299 Co-Pay)

PC4510

1.3 hrs.

PC452

Replace Telematics Control Unit
($149 Co-Pay)

PC4520

1.3 hrs.

PC454

Replace Telematics Control Unit
(Dealer Action Unit – No Co-Pay)

PC4540

1.3 hrs.

20/20