NHTSA ID Number: 10220180
Manufacturer Communication Number: LSB003621Rev2
TSB/Document Date: 2022-09-15
Summary
TSB: Some 2020 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?Diagnostic Trouble Code (DTC) B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus
App does not accept the activation code. ?Lexus App is inoperative. ?SOS call center does not receive the vehicle?s location in a timely manner. ?Lexus App shows an error 42 when trying to execute a command. ?Unable to remote start the vehicle with the key fob (if equipped). ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Destination Assist is inoperative. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles may exhibit one or more of the following conditions: ?DTC B15A804 is present in current or history. ?Red SOS LED stays on after bulb check. ?Lexus App is inoperative. ?Unable to subscribe to remote services. ?Unable to activate Wi-Fi. ?Depleted 12V vehicle battery when in IG-OFF. Some 2020 ? 2021 model year ES 350, ES 300h, UX 200, and UX 250h and 2021 model year ES 250 vehicles may exhibit one or more of the following conditions: ?Depleted 12V vehicle battery when in IG-OFF. ?Unable to reconnect out of network. A DCM reset and firmware update is now available to address these conditions. Follow the DCM Reset and Firmware Update Procedure in this bulletin to update the firmware.
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TSB/Document ID: LSB003621Rev2
Replacement Service Bulletin Number:
MFR Communication Date: 2022-06-06
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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L-SB-0036-21
Rev2
October 14, 2021
DCM Reset and Firmware Update (LG)
Service
Category
Audio/Visual/Telematics
Section
Cellular Communication
Market USA
Applicability
YEAR(S)
MODEL(S)
2021 - 2022
ES250
2020 - 2022
ES300H, ES350, UX200,
UX250H
ADDITIONAL INFORMATION
REVISION NOTICE
June 06, 2022 Rev2:
The Introduction and DCM Reset and Firmware Update Procedure sections have been updated.
April 11, 2022 Rev1:
The Applicability, Introduction, and DCM Reset and Firmware Update Procedure sections have
been updated.
Any previous printed versions of this bulletin should be discarded.
SUPERSESSION NOTICE
The information contained in this bulletin supersedes Service Bulletin No. L-SB-0036-20.
The Introduction and DCM Reset and Firmware Update Procedure sections have been modified.
Service Bulletin No. L-SB-0036-20 is obsolete and any printed versions should be discarded.
© 2022 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 11
L-SB-0036-21
Rev2
October 14, 2021
Page 2 of 11
DCM Reset and Firmware Update (LG)
Introduction
Some 2020 model year ES 350, ES 300h, UX 200, and UX 250h vehicles with firmware version
LG-N010dd7 or LG-N010ee9 or earlier may exhibit one or more of the following conditions:
Diagnostic Trouble Code (DTC) B15A804 is present in current or history.
Red SOS LED stays on after bulb check.
Lexus app does not accept the activation code.
Lexus app is inoperative.
SOS call center does not receive the vehicle’s location in a timely manner.
Lexus app shows an error 42 when trying to execute a command.
Unable to remote start the vehicle with the key fob (if equipped).
Unable to subscribe to remote services.
Unable to activate Wi-Fi.
Destination Assist is inoperative.
Some 2020 – 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles with firmware
version LG-N010ffB or earlier may exhibit one or more of the following conditions:
DTC B15A804 is present in current or history.
Red SOS LED stays on after bulb check.
Lexus App is inoperative.
Unable to subscribe to remote services.
Unable to activate Wi-Fi.
Depleted 12V vehicle battery when in IG-OFF.
Some 2020 – 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles and some
2021 model year ES 250 vehicles with firmware version LG-N010gg7 or earlier may exhibit the
following condition:
Depleted 12V vehicle battery when in IG-OFF.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
Page 3 of 11
DCM Reset and Firmware Update (LG)
Introduction (continued)
Some 2020 – 2021 model year ES 350, ES 300h, UX 200, and UX 250h vehicles and some
2021 model year ES 250 vehicles with firmware version LG-N010hh9 or earlier may exhibit the
following conditions:
Remote Engine Start inoperative (fob and app).
Remote Engine Start inoperative (app only).
B15CC49 backup battery malfunction.
Power Door Lock inoperative (app and fob).
Some 2020 – 2022 model year ES 350, ES 300h, UX 200, and UX 250h vehicles and some
2021 – 2022 model year ES 250 vehicles with firmware version LG-N010ii4 or LG-N010jj9 or
earlier may exhibit the following conditions:
Connected Services inoperative.
Safety Connect calls not completing intermittently.
DCM signal strength grayed OUT on head unit with strike-through.
Some 2020 – 2022 model year ES 350, ES 300h, UX 200, UX 250h vehicles and some
2021 – 2022 model year ES 250 vehicles with firmware version LG-N010kkA or earlier may
exhibit the following conditions:
Remote Services intermittently inoperative.
Remote Services intermittently have a long delay.
A DCM reset and firmware update is now available to address these conditions. Follow the DCM
Reset and Firmware Update Procedure in this bulletin to update the firmware.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
Page 4 of 11
DCM Reset and Firmware Update (LG)
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL1935
DCM Reset and Firmware Update
0.8
86741-#####*
86740-#####*
87
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Lexus Basic Warranty. This warranty is in effect for
48 months or 50,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream ADVI*
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
Software version 17.00.020 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
Use Techstream or an approved J2534 interface to perform flash reprogramming updates.
Visit techinfo.toyota.com for more information regarding J2534 reprogramming.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool*
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
Page 5 of 11
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure
1. Move the vehicle to an area with good DCM (Data Communication Module) signal reception.
NOTE
Ensure the customer has an active account BEFORE beginning this process.
If the customer has waived telematics services, an account may need to be temporarily created
to perform this update.
2. Using Techstream, perform a Health
Check and clear ALL DTCs.
Figure 1.
A. Check the “Perform Health Check on
all ECUs” box.
B. Check the “Store only DTC
and FFD” box.
C. Click on Next.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
Page 6 of 11
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
3. Verify the current firmware version.
Refer to TIS – Body Electrical – Telematics – Data List:
Table 1: Current Firmware Version.
SOFTWARE VERSION HIGH
PREVIOUS
CURRENT
LG-N010dd7
LG-N010ee9
LG-N010ffB
LG-N010gg7
LG-N010hh9
LG-N010ii4
LG-N010jj9
LG-N010kkA
LG-N010ll3
Is the firmware version up to date?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 4.
4. Disconnect the battery to reset the DCM.
5. Reconnect the battery AFTER it has been disconnected for AT LEAST 30 minutes.
6. Cycle the ignition to the IG-ON position IMMEDIATELY.
7. Verify the SOS LED indicator status.
Has the SOS LED indicator been on solid green for more than five seconds?
YES — Continue to step 8.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
8. Perform the DCM firmware update utility.
Refer to TIS – Body Electrical –
Telematics – Utility.
Figure 2.
9. Click on Next when the DCM firmware
update screen appears.
Figure 3.
© 2022 Lexus, a division of Toyota Motor Sales, USA
Page 7 of 11
L-SB-0036-21
Rev2
October 14, 2021
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
10. Select “Start the firmware update” and click
on Next when the item selection
screen appears.
Figure 4.
11. Click on Next when the current software
part number screen appears.
Figure 5.
NOTE
If the screen in Figure 5 does NOT appear
and an error message displays, begin the
DCM Firmware Update Procedure again from
step 4. The battery reset MUST be
performed again.
Use the battery diagnostic tool to maintain
battery voltage.
NOTE
The battery diagnostic tool MUST be
usedin Power Supply Mode to maintain
battery voltage at 13.5V while flash
reprogramming the vehicle.
For details on how to use the battery
diagnostic station, refer to the
DCA-8000 Instruction Manual located at
TIS – Diagnostics – Tools & Equipment –
Battery Diagnostics.
© 2022 Lexus, a division of Toyota Motor Sales, USA
Page 8 of 11
L-SB-0036-21
Rev2
October 14, 2021
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
12. The firmware update will begin. Do NOT
turn the vehicle OFF during this time.
Figure 6.
NOTE
Do NOT press Exit until the update
process has completed.
During the update process the green and
red LEDs will both be ON and will reset
several times resulting in the LEDs being
temporarily OFF during the process. The
download process will take about
5 – 10 minutes.
13. The green LED will be ON when the
update process has completed. AFTER the
process has completed, wait for the radio
screen to display the service mode screen
BEFORE you click OK to exit.
Figure 7.
© 2022 Lexus, a division of Toyota Motor Sales, USA
Page 9 of 11
L-SB-0036-21
Rev2
October 14, 2021
Page 10 of 11
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
14. Verify the current firmware version.
Refer to TIS – Body Electrical – Telematics – Data List:
Table 2: Current Firmware Version
CURRENT FIRMWARE VERSION
SOFTWARE VERSION HIGH
LG-N010ll3
15. Using Techstream, perform a Health Check and clear ALL DTCs that may have occurred during
the update process.
16. In the customer’s Lexus app, perform steps
17 – 19 for customers with the “Unable to
Activate Remote” message.
Figure 8.
17. Click on the arrow by the vehicle
name/nickname.
Figure 9.
© 2022 Lexus, a division of Toyota Motor Sales, USA
L-SB-0036-21
Rev2
October 14, 2021
DCM Reset and Firmware Update (LG)
DCM Reset and Firmware Update Procedure (continued)
18. Click on Remove.
Figure 10.
19. Click on Add Vehicle to perform
the enrollment again.
Figure 11.
© 2022 Lexus, a division of Toyota Motor Sales, USA
Page 11 of 11
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