TECHNICAL INSTRUCTIONS
FOR
22TC01
DATA COMMUNICATION MODULE (DCM) REPROGRAMMING
CERTAIN
2021 MODEL YEAR C-HR, RAV4 PRIME, TUNDRA
CERTAIN
2021-2022 4RUNNER, HIGHLANDER, HIGHLANDER HV,
PRIUS PRIME, SEQUOIA, TACOMA
CERTAIN
2022 PRIUS
Update
• 10-18-2023 – Updated Temporary DCM activation section
• 4-25-22 – TI updated to include information about waived telematics
accounts.
The repair quality of covered vehicles is extremely important to Toyota. All dealership technicians
performing this repair are required to successfully complete the most current version of the ELearning 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:
• T623 – Toyota Electrical Circuit Diagnosis
Always check which technicians can perform the repair by logging on to
https://www.uotdealerrepors.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
Verify Vehicle Eligibility
1. Check the VIN range.
2. Check the TIS Vehicle
Inquiry System.

No further action
required.

Not Covered

Covered

Perform Health Check and
Verify ECU Calibration
Old Calibration

Check Telematics Data List

In Shipping Mode

Not in Shipping Mode
New Calibration

Reflash the DCM with the NEW
software.

Activate DCM

Campaign completed, return the
vehicle to the customer.

II. IDENTIFICATION OF AFFECTED VEHICLES
1. Check the TIS Vehicle Inquiry System to confirm the VIN is involved in this Special Service Campaign and
that the campaign has not already been completed prior to dealer shipment or by another dealer.
NOTE:
•
TMNA warranty will not reimburse dealers for repairs conducted on vehicles that are not affected
or were completed by another dealer.

III. PREPARATION
A. TOOLS, SUPPLIES & EQUIPMENT

• Standard Hand Tools
• Techstream 2.0 / Techstream Lite / ADVi

• DCA-8000P Battery Diagnostic Tool

1

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 SIDE
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 the power to the hard disk is kept supplied.
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 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.

V. CALIBRATION ID VERIFICATION
1.

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

a)

2

2.

CHECK CURRENT CALIBRATION
a) Locate the Calibration column for the Telematics in the Stored Data tab for this vehicle.
b) Check the Calibration ID of the Telematics ECU (DCM).
Old Calibration
FDC40.48.10
FDC40.58.10

Proceed to section VI. SHIPPING
MODE VERIFICATION on p.4

Check the Calibration ID of the
Telematics ECU (DCM).

New Calibration
FDC40.48.11
FDC40.58.11

Campaign complete. Return the
vehicle to the customer.

3

VI. SHIPPING MODE VERIFICATION
1.

Not in Shipping
Mode

Proceed to section VI. VEHICLE
PREPARATION on p.4

a)

CHECK TELEMATICS DATA LIST
Select the “System Select” tab at the top left of the screen, select
“Telematics” and click the right-arrow.

b)

Select “Data List.”

c)

Check to see if the Telematics Activation Status value is
“Shipping.”

Check to see if the vehicle is in
Shipping Mode.

In Shipping Mode

Refer to Appendix B, RESTORING A
WAIVED TELEMATICS ACCOUNT,
starting on p.15

4

VII. VEHICLE PREPERATION
1.

a)

CHECK DCM RECEIVING LEVEL
Confirm that the DCM signal reception level shown in the upper right corner of the head unit display is not
out of range. If the display shows poor or no connectivity, move the vehicle to another safe location with
adequate signal reception.
NOTE:

•
•

2.

Refer to the image below for target signal reception.
Full signal is not required but you must have at least one bar.

VEHICLE PREPERATION
a) Confirm the following conditions (Example):
• Vehicle in the IG position (engine off).
• Turn off all electrical accessories (i.e. air conditioning system,
• Open the driver’s door window.
audio system, etc.)
• Transaxle in P range.
• Hedadlight switch in the DRL OFF position.(w/ DRL OFF position)
• Parking brake engaged.
• Windshield wiper switch in the OFF position.
NOTE:
The electric fan does not operate during reprogramming, so stopping fan operation is unnecessary.
b)

3.

a)
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.

CONNECT THE 12V BATTERY TO A POWER SUPPLY
Connect the DCA-8000 battery charger to the 12V battery.
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.

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

5

4.

VERIFY TECHSTREAM SETUP
a) Verify that the Techstream meets the following conditions:
• The latest version of software is loaded.
• The Techstream is connected to a 120V source.
• The DLCIII cable is in good condition.
The Techstream’s battery voltage must also be maintained during the re-flash procedure. Be
sure to plug the Techstream into a 120V outlet during this procedure.

VIII. UPDATE CALIBRATION
Red Indicator Not Illuminated

Not Illuminated

1.

REPROGRAM CALIBRATION ID
a) Confirm that the red indicator next to the SOS button is not
illuminated. If the red indicator remains illuminated for longer than
2 seconds after IG-ON, there is a problem with the system that
must be resolved before continuing.
NOTE:
This Campaign covers only the software update to the DCM,
as detailed in these instructions. It does not cover the
diagnosis or replacement of any other systems on the
vehicle.
b)

Select the “System Select” tab at the top left of the screen, select
“Telematics” and click the right-arrow.

c)

Click “Utility”.

d)

Select “DCM Firmware Update” and click the right-arrow.

6

e)

Click “Next”.

f)

Select “Start the firmware update” and click “Next”.

g)

Confirm that the displayed software part number (Calibration ID) is
the one to be reprogrammed, then click “Next”.

Software Part Number to
be reprogrammed
FDC40.48.10
FDC40.58.10

New Software Part
Number
FDC40.48.11
FDC40.58.11