TECHNICAL INSTRUCTIONS
FOR
22LC01
DATA COMMUNICATION MODULE (DCM) REPROGRAMMING
CERTAIN
2021 MODEL YEAR IS300, IS350, LC500, LC500h, LC500C, LS500,
LS500h, NX300, NX300h, RC300, RC350, RC F
CERTAIN
2021-2022 RX350, RX350L, RX450h, RX450hL
CERTAIN
2022 GX460
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 Lexus. 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:
• L623 – Lexus 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

NOTE:
If the displayed software part number (Calibration ID) does not
need to be reprogrammed, click “Exit”.

7

If the error message below is displayed after attempting to start the firmware
update, refer to the Appendix B, RESTORING A WAIVED TELEMATICS
ACCOUNT, starting on page 15. Otherwise proceed to the next step.

8

h)

Green and Red indicators turn on and then the reprogramming of
the Software Part Number (Calibration ID) starts.

DO NOT operate the vehicle or GTS while
the green and red indicators are illuminated.
NOTE:
It takes approximately 5 minutes for reprogramming.
i)

Wait until the red indicator turns off.

NOTE:
The green indicator will remain illuminated if the Safety Connect
subscription is active, otherwise both indicators will turn off.

j)

Confirm that the red indicator is turned off for more than 30
seconds.
Since the indicator may repeatedly turn on
and off, make sure that the red indicator is
turned off for more than 30 seconds and then
proceed to the next step.

NOTE:
The green indicator will remain illuminated if the Safety Connect
subscription is active, otherwise both indicators will turn off.
k)

Click “Exit”.

9

2.

CONFIRM CALIBRATION ID
a) Launch the left-side display, select “Telematics” and click the rightarrow.

b)

Click “Utility”.

c)

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

d)

Click “Next”.

10

e)

Select “Check that firmware update has been completed” and click
“Next”.

f)

Confirm that the displayed software part number (Calibration ID)
has been changed to the new one, then click “Next”.

New Software Part
Number
FDC40.48.11
FDC40.58.11

g)

Turn the IG ON, then OFF, then ON, then click “Exit”.

11

IX. COMPLETE REPAIR
1.
2.

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.

3.

a)
b)

CHECK OPERATION OF SAFETY CONNECT
Turn the IG ON.
To confirm that the Safety Connect services are available, check
that the green indicator is illuminated and the red indicator is not
illuminated after approximately 2 seconds from the IG ON.
If the illumination condition is other than the
above, a system error may have occurred.
Check the correspondence by referring to the
navigation system manual.

NOTE:
 Green and red indicators turn on for approximately 2 seconds
after the IG ON.
 If the contract of Safety Connect services has expired, the green
and red indicators will turn off.
c)

Turn the IG OFF.

12

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 radio button for the applicable campaigns completed during this service
event.
Select the Report button.

f)

Confirm Customer Health Check Report information is correct.

g)
h)

Print Customer Health Check Report from TIS.
Sign and provide to the customer.
13

−
−

◄ VERIFY REPAIR QUALITY ►

Confirm the system Calibration has been updated successfully.
Confirm there are no DTC’s after the Calibration update.

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

14

B. RESTORING A WAIVED TELEMATICS ACCOUNT
If the customer has opted out of (waived) Connected Services, you will be unable to perform the software
update until the services are restored. Follow the steps below to restore DCM connectivity.
1. CHECK TELEMATICS EXPIRATION DATE
a) Navigate to https://one.tis.toyota.com/serviceLane/.
b) Enter the VIN in Vehicle One-View and click Search.
c) Scroll down to the Telematics tab and check the expiration date of TELEMATICS PRODUCTS.

Not Expired

Proceed to step 2. TELEMATICS
TRIAL CUSTOMER SELFACTIVATION.

Check the TELEMATICS
PRODUCTS expiration date.

Expired

Proceed to step 3. EXPIRED
ACCOUNT TEMPORARY
ACTIVATION.

15

2. TELEMATICS TRIAL CUSTOMER SELF-ACTIVATION
If the telematics trial period is still active, request the customer to perform the steps below to restore
the Connected Services. After Connected Services have been restored, turn the IG ON, then OFF,
then ON again and then return to section VII. UPDATE CALIBRATION above to re-try the firmware
update. If the customer does not wish to enable the Connected Services trial, return the vehicle to the
customer and leave the campaign open.
Connected Services Trial Restoration Procedure:
a) Sign in to the Lexus app.

App Version 1

App Version 2

b) Tap “My Garage” or your vehicle’s
model name and year.

App Version 1

App Version 2

16

c) Tap “Manage Subscription” or
“Subscriptions.”

App Version 1

App Version 2

d) Tap “Enable All Trials.”

App Versions 1 and 2

17

e) Tap “Continue.”

App Versions 1 and 2

f)

Tap "Accept" the Connected
Services Master Data consent.
NOTE: Acceptance is required
for DCM software update.

App Versions 1 and 2

18

g) Tap "Accept" or "Decline" for
Service Connect Communication
consent.
NOTE: Acceptance is NOT
required for DCM software
update.

App Versions 1 and 2

h) To proceed with activating your
available trials, tap "Confirm and
Continue."

App Versions 1 and 2

19

i)

Trial Services have now been
activated.

App Versions 1 and 2

20

3.

EXPIRED ACCOUNT TEMPORARY ACTIVATION
1. Confirm the guest’s subscription status and verify that the account is either not active or in a “waived” status.
2. Enter the VIN into the Dealer Portal, check the customer consent check box, and click the “Temporary DCM
Activation” button (Figure 1). The service will be active for 72 hours.
3. Once active, the DCM firmware OTA update may be installed.
4. After the 72 hours has elapsed, the vehicle will be put back into whatever status it was previously.

Figure.1 Dealer Portal Temporary DCM Activation button

1. L-SB-0036-21 – Rev2: ‘20-’22 Applicable Lexus Models: DCM Reset and Firmware Update
(LG)
2. Telematics Diagnostics Guide (TDG-23)

21