NHTSA ID Number: 11003623
Manufacturer Communication Number: T-SB-0027-24
TSB/Document Date: 2024-07-06
Summary
Some 2023 model year RAV4 Prime vehicles with Data Communication Module (DCM) firmware version earlier than LG-N210hh1V1V-09 may exhibit a condition in which the remote climate system is inoperative after the vehicle is off for three hours or more.
T-SB-0027-24
April 11, 2024
Remote Climate System Inoperative
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market USA
Applicability
YEAR(S)
MODEL(S)
2023
RAV4 Prime
ADDITIONAL INFORMATION
Introduction
Some 2023 model year RAV4 Prime vehicles with Data Communication Module (DCM) firmware
version earlier than LG-N210hh1V1V-09 may exhibit a condition in which the remote climate
system is inoperative after the vehicle is off for three hours or more.
A DCM firmware update is now available to address this condition. Follow the DCM Firmware
Update Procedure in this bulletin to update the firmware.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2408
DCM Firmware Update
0.3
86741-760##*
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 Toyota
Basic Warranty. This warranty is in effect for
36 months or 36,000 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.
© 2024 Toyota Motor Sales, USA
Page 1 of 11
T-SB-0027-24
April 11, 2024
Page 2 of 11
Remote Climate System Inoperative
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.
• GTS+ software version 2024.01.002.02 or later is required.
• Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787 or by visiting TIS – Diagnostics – Tools & Equipment – Techstream Order Portal.
• 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 or by visiting
Home – Service Resources – Toyota Special Service Tools (SSTs).
© 2024 Toyota Motor Sales, USA
T-SB-0027-24
April 11, 2024
Page 3 of 11
Remote Climate System Inoperative
DCM Firmware Update Procedure
1. Move the vehicle to an area with reliable and stable DCM 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 GTS+, perform a Health Check and clear ALL DTCs.
Figure 1.
© 2024 Toyota Motor Sales, USA
T-SB-0027-24
April 11, 2024
Page 4 of 11
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
3. Verify the current firmware version by expanding (+) the Telematics menu.
Figure 2.
Table 1. Firmware Version Information
PREVIOUS
CURRENT
LG-N210cc4J4J-09
LG-N210dd8A8A-09
LG-N210ee9999-09
LG-N210hh1V1V-09
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. Verify the SOS LED indicator status.
Has the SOS LED indicator been on solid green for more than five seconds?
YES — Continue to step 5.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2024 Toyota Motor Sales, USA
T-SB-0027-24
April 11, 2024
Page 5 of 11
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
5. Perform the DCM firmware update utility.
Go to System Select – Telematics – Utility – DCM Firmware Update – Next Arrow
as shown in Figures 3 and 4.
Figure 3.
Figure 4.
© 2024 Toyota Motor Sales, USA
T-SB-0027-24
April 11, 2024
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
6. Click Next when the DCM Firmware
Update screen appears.
Figure 5.
7. Select Start the firmware update and click
Next when the item selection
screen appears.
Figure 6.
© 2024 Toyota Motor Sales, USA
Page 6 of 11
T-SB-0027-24
April 11, 2024
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
8. Click Next when the Current Firmware Part
Number screen appears.
Figure 7.
NOTE
If the screen in Figure 7 does NOT appear
and an error message displays, begin the
Firmware Update Procedure again from
step 4. A battery reset MUST be performed.
Use the battery diagnostic tool to maintain
battery voltage.
NOTE
The battery diagnostic tool MUST be
used in Power Supply Mode to maintain
battery voltage at 13.5 V 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.
9. The firmware update will now begin. Do
NOT turn the vehicle OFF during this time.
Figure 8.
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.
© 2024 Toyota Motor Sales, USA
Page 7 of 11
T-SB-0027-24
April 11, 2024
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
10. The three conditions below will indicate
that the firmware update process
is complete:
The green LED will stay ON.
The DCM Firmware Update is
complete message will appear
on Techstream.
The service mode message will appear
on the display screen.
11. Select Check that the firmware update has
been completed and click Next.
Figure 9.
Figure 10.
© 2024 Toyota Motor Sales, USA
Page 8 of 11
T-SB-0027-24
April 11, 2024
Page 9 of 11
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
12. Verify the New Software Part Number
version matches or is greater than the
table below.
Figure 11.
Table 2. Current Firmware Version
FIRMWARE
VERSION
HIGH
CURRENT FIRMWARE VERSION
LG-N210hh1V1V-09
13. Using GTS+, perform a Health Check and clear ALL DTCs that may have occurred during
the update process.
© 2024 Toyota Motor Sales, USA
T-SB-0027-24
April 11, 2024
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
14. For customers with the Unable to Activate
Remote message, perform steps 14 – 16 in
the Toyota app.
Figure 12.
15. Click the down arrow next to the vehicle
name or nickname.
Figure 13.
© 2024 Toyota Motor Sales, USA
Page 10 of 11
T-SB-0027-24
April 11, 2024
Page 11 of 11
Remote Climate System Inoperative
DCM Firmware Update Procedure (continued)
16. Click Remove.
Figure 14.
17. Click Add Vehicle to perform
the enrollment again.
Figure 15.
18. Confirm the Unable to Activate Remote message does NOT appear.
If the Unable to Activate Remote message appears, continue diagnosis using the
applicable Repair Manual.
© 2024 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0027-24
Replacement Service Bulletin Number:
MFR Communication Date: 2024-04-11
MFR Internal Campaign ID/Software Version: T-SB-0027-24
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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