TECHNICAL INSTRUCTIONS
FOR
SPECIAL SERVICE CAMPAIGN 22LC03
SOFTWARE UPDATE FOR A GEAR SHIFT CONTROL MODULE
CERTAIN 2022 NX 350 AND NX 250 VHEICLES

The repair quality of covered vehicles is extremely important to Lexus. All dealership technicians performing
this repair are required to successfully complete the most current version of the E-Learning course “Safety
Recall and Service Campaign Essentials”. To ensure that all vehicles have the repair performed correctly;
technicians performing this recall repair are required to currently have completed all of the following courses:
L623 – Lexus Electrical Circuit Diagnosis
Always check which technicians can perform the repair by logging on to https://www.lctpreports.com. It is the
dealership’s responsibility to select technicians with the above certification level or greater to perform this
repair. Carefully review your resources, the technician skill level, and ability before assigning technicians to this
repair. It is important to consider technician days off and vacation schedules to ensure there are properly trained
technicians available to perform this repair at all times.

I.

OPERATION FLOW CHART

The flow chart is for reference only. DO NOT use it in place of the full technical instructions. Follow ALL
steps as outlined in the full technical instructions to confirm the campaign is completed correctly.

Verify Vehicle Eligibility
1. Check the VIN range.
2. Check the TIS Vehicle Inquiry
System.

Not Covered

No further action required.

Covered

Perform Health Check and Verify
ECU Calibration. Is there an update?
Old Calibration

Reflash the Shift Actuator ECU with
the NEW software and attach an
Authorized Modification Label

New Calibration

Campaign completed, return the
vehicle to the customer

II. IDENTIFICATION OF AFFECTED VEHICLES
1.

CHECK VEHICLE FOR CAMPAIGN ELIGIBILITY
a) Compare the vehicles VIN to the VIN listed on the Repair Order to ensure they match.
b) Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Campaign, and that it has not
already been completed.
NOTICE:
TMNA warranty will not reimburse dealers for repairs completed on vehicles that are not affected or
were previously completed, even by another dealer.

III. PREPARATION
A. TOOLS, SUPPLIES & EQUIPMENT
•
•
•
•
•

Standard Hand Tools
L-SB-0001-18
L-SB-0036-22
DCA-8000 Battery Diagnostic Station
Techstream 2.0 / Techstream Lite / ADVi

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IV. SEAFETY PRECAUTIONS
CRITICAL INFORMATION - READ THOROUGHLY

An ECU could be damaged if an error occurs in the communication while reprogramming the ECU. Confirm all work is
performed as described in these instructions.

1.

STABILIZE THE POWER TO THE PERSONAL COMPUTER
a)

Be sure to connect the personal computer to an external AC
power supply.

NOTE:
The ECU could be damaged if the battery voltage of the personal
computer drops while reprogramming.
b)

Turn off the screen saver and power saving mode of the personal
computer so that power to the personal computer is stable.

NOTE:
If the screen saver or power saving mode launches while
reprogramming, the communication may be disconnected,
resulting in the damage of the ECU.

c)

DO NOT block the ventilation opening for the cooling fan of the
personal computer.

NOTE:
If the ventilation opening for the cooling fan is blocked, the
personal computer may be heated excessively, causing the
operation of the personal computer to stop.
Due to the stop of operation, the communication for
reprogramming signals could be stopped, resulting in damage of
the ECU.

V. SHIFT ACTUATOR ECU CALIBRATION ID VERIFICATION
1.

CHECK FOR DTC’S
a) Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes.
NOTE:
This Campaign covers only the software update to the Shift
Actuator ECU, as detailed in these instructions. It does not cover
the diagnosis or replacement of any other systems on the vehicle.

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2.

CHECK CURRENT CALIBRATION
a) Locate the Update column for the Gear Shift Control Module “B” system in the Stored Data tab for this
vehicle.
b) Determine the status of an available update; indicated by a YES or NO.
HINT:
If the CID’s indicate ‘Yes’, proceed with the update procedure.

Yes

Is there an update available for
the Gear Shift Control Module “B”
System?

No

Campaign complete. Return the
vehicle to the guest.

Proceed to section VI. Vehicle
preparation on page 3.

◄ CRITICAL MESSAGE ►
It is critical that L-SB-0001-18 and L-SB-0036-22 in addition to the Technical Instructions for this Special Service
Campaign are followed. This TSB outlines all steps necessary to prevent reprogramming failure.

VI. VEHICLE PREPERATION
1.
•
•
•

VEHICLE PREPERATION
a) Confirm the following conditions:
Vehicle in the IG position (engine off).
Transaxle in Park.
Parking brake engaged.

•
•
•

Turn off all electrical accessories (i.e. climate control, audio
system, etc.)
Headlight switch in the DRL OFF position.
Windshield wiper switch in the OFF position.

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2.

CONNECT THE 12V BATTERY TO THE DCA-8000
a) Connect the DCA-8000 to the 12V battery.
b) Select the Power Supply Mode from the Main Menu of the DCA-8000.
A power supply MUST be used during reprogramming. ECU damage will occur if the battery
voltage is not properly maintained during this re-flash procedure.

NOTICE:
A power supply must be connected directly to the 12V battery terminals and NOT the remote jump
posts under the hood (if equipped).

3.
•
•
•

VERIFY TECHSTREAM SETUP
a) Verify that the Techstream meets the following conditions:

The latest version of software is loaded.
The Techstream battery is fully charged.
The DLCIII cable is in good condition.

If not, connect the Techstream to a 120V source.

The Techstream’s battery voltage must also be maintained during the re-flash procedure. If
necessary, plug the Techstream into a 120v outlet during this procedure.
NOTICE:
If the Techstream communication with the vehicle fails during the re-flash procedure, the Shift Actuator
ECU will be damaged.
b)

This vehicle has additional security measures requiring a signature from the server when performing
ECU reprogramming.

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VII. UPDATE CALIBRATION
1.

CONFIRM THE CALIBRATION ID FOR THE GEAR SHIFT CONTROL MODULE “B” SYSTEM
a) Confirm the current calibration ID in the Gear Shift Control Module “B” System.

Current CID

The calibration IDs to re-flash in this campaign are as shown in the table below.

System
Gear Shift Control Module “B”

Gear Shift Control Module “B” System Calibrations
Current Calibration ID
New Calibration ID
Main: 894FF7801100
Installation File
Sub: 894FG7801100
Main: 894FF7801300
Main: 894FF7801200
Sub: 894FG7801300
Sub: 894FG7801200

2.

REFLASH THE CONTROL COMPUTER
a) Click yes on the health check results screen, or follow the links on the table above the begin the reflash
process.
NOTICE:
Reflash failure should be extremely rare and can be avoided by following all instructions and
reprogramming best practices.

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VIII.

COMPLETE REPAIR
1.
2.

3.
•
•

DISCONNECT THE DCA-8000
PERFORM VERIFICATION HEALTH CHECK
a) Using a Techstream, perform a Health Check.
b) Clear DTC’s that may have set during the re-flash procedure.
c) Re-run the Health Check to confirm that no DTC’s reappear.
THIS VERIFICATION HEALTH CHECK IS
NECESSARY to update the results and CID’s
to the National database.

CONFIRM CID UPDATE
a) On the Stored Data tab, confirm the following for the Gear Shift Actuator Module “B” System:

The Calibration number has the “New CID” number.
The Update column says “No”.

New CID’s MUST be
displayed

Update must say
“no”

Confirm the CID's has been updated successfully to the NEW CID's by someone other than the
individual who performed the repair. Refer to page 5.

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4.

PRINT CUSTOMER HEALTH CHECK REPORT
a) From the Stored Data tab, select the Customer Health Check Report button (TIS will launch when button
is pressed).

b)
c)
d)
e)

Log in to TIS.
Input Vehicle Mileage and Repair Order number.
Check the “Performed” campaign button for the applicable campaigns.
Select the Report button.

f)
g)
h)

Confirm Customer Health Check Report information is correct.
Print Customer Health Check Report from TIS.
Sign and provide to the customer.

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IX. ATTACH THE AUTHORIZED VEHICLE MODIFICATION LABEL
a. Fill out the label.
b. Affix the label to the under-side of the hood.

1
2
3
4
5

-

Repair ECU P/N
Calibration ID
Dealer Code
Date Completed
Campaign Code (22LC03)

◄ VERIFY REPAIR QUALITY ►
Confirm the DCA-8000 is set up properly prior to beginning the reprogramming.
Confirm the reflash completes successfully.
Confirm there are no DTCs after the Calibration update.
If you have any questions regarding this update, please contact your area representative.

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X. APPENDIX
A. CAMPAIGN DESIGNATION DECODER

Examples:
19TA01 = Launched in 2019, Toyota, Safety Recall Remedy Phase, 1st Safety Recall Launched in 2019
20TC02 = Launched in 2020, Special Service Campaign, 2nd Special Service Campaign Launched in 2020
21TE05 = Launched in 2021, Customer Support Program, 5th Customer Support Program Launched in 2021

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