TECHNICAL INSTRUCTIONS
FOR
LIMITED-SERVICE CAMPAIGN 22TD05
Software Update for “Car Finder” Feature
CERTAIN 2023 Model Year bZ4X

The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians
performing this recall 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 repair are required to currently have completed all of
the following courses:
-

Expert Technician (Hybrid)

It is the dealership’s responsibility to select technicians that have completed the above courses 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. Confirm vehicle VIN matches the RO.
2. Check for Campaign eligibility using TIS.

Not Covered

No further action required.

Covered

Perform Health Check and Verify ECU
Calibration
Old Calibration

Reflash the main body ECU with the
NEW software.

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 Limited Service 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 & EQUIPMENT
•
•
•

Standard Hand Tools
• DCA-8000 Battery Diagnostic Station
T-SB-0134-16
• T-SB-0107-20
Techstream ADVi / Techstream 2.0 / Techstream Lite

1

IV. BACKGROUND

The subject vehicles are equipped with a Body Control Module (BCM) which, among other tasks, controls the
operation of the vehicle’s exterior lighting. With a subscription to the Toyota One app, the headlamps can be turned
on remotely for approximately 60 seconds to help the owner locate their parked vehicle. Under certain conditions,
after this feature has been activated, the headlamps and tail lamps may turn off and/or remain off once the vehicle
has been turned on. In all cases, the headlamps and tail lamps can be illuminated manually using the headlamp
switch.

V. SAFETY 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 SIDE
a) Be sure to connect the personal computer to an external AC power
supply.
NOTICE:
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 the power to the hard disk is kept supplied.

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

2

c)

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

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

VI. MAIN BODY SYSTEM CALIBRATION ID VERIFICATION
1. CHECK FOR DTC’S
a) Using a Techstream, perform a Health Check to check for any
Diagnostic Trouble Codes.
NOTICE:
This Campaign covers only the software update to the Main Body
System, as detailed in these instructions. It does not cover the diagnosis
or replacement of any other systems on the vehicle.

2. CHECK CURRENT CALIBRATION
a) Locate the Update column for the Main Body 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

Proceed to section VII. Vehicle
preparation on p.4

Is there an update available for
the Main Body System?

No

Campaign complete. Return the
vehicle to the customer.

3

◄ CRITICAL MESSAGE ►
It is critical that T-SB-0134-16 and T-SB-0107-20 in addition to the Technical Instructions for this LSC are followed.
This TSB outlines all steps necessary to prevent reprogramming failure. Toyota will not provide reimbursement coverage
for reprogramming failures if this TSB is not followed. If you have a reprogramming failure that requires main body ECU
replacement and the Technical Instructions and TSB were followed correctly, please create a case with the Technical
Assistance Hotline documenting all information related to the failure. If sufficient reporting is received related to re-flash
failure, there will be consideration for reimbursement.

VII. VEHICLE PREPERATION

1. VEHICLE PREPARATION
a) Confirm the following conditions:
Hint: Press power button until “Power on” is displayed on the dash.

•
•
•

Vehicle in the IG position (READY
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. (w/ DRL OFF
position)
• Windshield wiper switch in the OFF position.
b) When the vehicle has no “OFF position” in the light control switch:
1) Turn the IG ON.
2) Set the light control switch to the AUTO position and make sure
that the exterior lights are turned on.
3) Light up the automatic light control sensor with work light to
keep the exterior lights turned off.
•

2. CONNECT THE 12V BATTERY TO A POWER SUPPLY
a) Connect the DCA-8000 or other type of a power supply (not a battery charger) to the 12 V battery.
b) Tap the Reflash icon from the Main Menu screen 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. If not, connect the Techstream to a 120 V source.
• The DLCIII cable is in good condition.
The Techstream’s battery voltage must also be maintained during the re-flash procedure. If
necessary, plug the Techstream into a 120 v outlet during this procedure.
NOTICE:
4

If the Techstream communication with the vehicle fails during the re-flash procedure, the parking assist ECU
will be damaged.

VIII.

UPDATE CALIBRATION
1. PERFORM VEHICLE HEALTH CHECK

2. CONFIRM THE ECU CALIBRATION ID
a) Confirm the current calibration ID in the Main Body System.

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

Model

System

bZ4X

Main Body

Main Body Calibrations
Main Body Calibration ID
Current Calibration ID
8922F4213004
8922F4214004
8922F4215004

New Calibration ID
8922F4213100
8922F4214100
8922F4215100

3.

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

5

4. LAUNCH CALIBRATION WIZARD
a) Select “Next”

5. SELECT A DEVICE TOOL
a) Select “Next”

6.

CONFIRM THAT "NEW CAL ID" IS CORRECT, AND
THEN CLICK ON “NEXT”. (FIG 1.)
Note: If the incorrect CAL ID file is selected it is not
possible to move onto the re calibration. See Fig 2. as
example of incorrect Cal ID selected.

Fig 1.

Fig 2.

7.

FOLLOW THE ON-SCREEN INSTRUCTIONS

6

8.

FOLLOW THE ON-SCREEN INSTRUCTIONS

Notice: DO NOT turn the IG ON with the brake pedal depressed.

9.

PERFORM SECURITY SIGNATURE TO THE SERVER
a. Follow the instructions on screen

Hint: The reprogramming will not begin without the security
signature

10. LOGIN TO TIS
a. Input TIS login credentials and select “Login”
Note: This step requires internet.

11. PERFORM SECURITY SIGNATURE TO THE SERVER
a. Input TIS login credentials and select “Login”

12. PERFORM SECURITY SIGNATURE TO THE SERVER
a. Select “Send”

13. COPY SIGNATURE FROM TIS
b. Select “Copy to Clipboard”

7

14. PASTE SIGNATURE INTO TECHSTREAM
b. Select “Next”

15. RECALIBRATION WILL NOW BEGIN

16. COMPLETE REPAIR
a. The following Screens will appear at the end of the reflash.

IX. COMPLETE REPAIR

8

1.

DISCONNECT THE DCA-8000

2. 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.

3.

COMPLETE ECU UPDATE AUTHENTICATION
a. Input TIS Credentials

HINT: Health check will complete once TIS credentials have been entered

4. COMPLETE HEALTH CHECK AND CONFIRM CID UPDATE
a. On the Stored Data tab, confirm the following for the Main Body System:
• The Calibration number has the “New CID” number.
• The Update column lists “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 p.5.

9

5. 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).

a)
b)
c)
d)

Log in to TIS.
Input Vehicle Mileage and Repair Order number.
Check the “Performed” campaign button for campaign 22TD05.
Select the Report button.

e)
f)
g)

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

10

−
−
−

◄ VERIFY REPAIR QUALITY ►
Confirm the BCM Calibration has been updated successfully to the NEW CID.
Confirm there are no DTC’s after the Calibration update.
If you have any questions regarding this Campaign, please contact your regional representative

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

11