NHTSA ID Number: 11016798
Manufacturer Communication Number: L-SB-0018-25
TSB/Document Date: 2025-04-08
Summary
Some 2023 – 2024 RX 500h and 2024 – 2025 TX 500h vehicles may exhibit a shudder sensation when the vehicle is at a complete stop, the State of Charge (SOC) of the HV Battery
is greater than 76%, and the transmission is in the Drive position with the brakes applied.
L-SB-0018-25
February 24, 2025
Shudder Sensation When Vehicle at Complete Stop
Service
Category
Drivetrain
Market USA and
Section
Mexico
Hybrid Transmission/Transaxle
Applicability
YEAR(S)
MODEL(S)
2023 - 2024
RX500H
2024 - 2025
TX500H
ADDITIONAL INFORMATION
Introduction
Some 2023 – 2024 RX 500h and 2024 – 2025 TX 500h vehicles may exhibit a shudder sensation
when the vehicle is at a complete stop, the State of Charge (SOC) of the HV Battery is greater
than 76%, and the transmission is in the Drive position with the brakes applied. Follow the Repair
Procedure in this bulletin to address this condition.
Warranty Information
USA Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2505
Reprogram the Hybrid Vehicle
Control Computer
1.1
89980-0E###*
9B
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 Hybrid Warranty. This warranty is in effect for
96 months or 100,000 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.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
Page 1 of 5
L-SB-0018-25
February 24, 2025
Page 2 of 5
Shudder Sensation When Vehicle at Complete Stop
Warranty Information (continued)
Mexico Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL2505
Reprogram the Hybrid Vehicle
Control Computer
1.1
89980-0E###*
9B
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 80,000 kilometers, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Parts Information
PART NUMBER
PART NAME
QTY
Computer Assy, Hybrid Vehicle Control
–
89980-0E310
89980-0E490
89980-0E580
89980-0E280
NOTE
The hybrid vehicle control computer assembly should NOT be replaced as part of the Repair Procedure.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
L-SB-0018-25
February 24, 2025
Page 3 of 5
Shudder Sensation When Vehicle at Complete Stop
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream ADVi*
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 2024.04.004.02 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787 (USA) or 01-55-50103041 (Mexico) 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.
Calibration Information
CALIBRATION ID
MODEL
MODEL YEAR
ENGINE
PREVIOUS
NEW
8A2520E03300
2023
8A2520E03500
RX 500h
8A2520E03400
2024
QTY
T24A-FTS
8A2520E09000
8A2520E09100
2024
8A2520E02100
8A2520E02200
2025
8A2520E12000
8A2520E12100
TX 500h
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
L-SB-0018-25
February 24, 2025
Page 4 of 5
Shudder Sensation When Vehicle at Complete Stop
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a shudder sensation when the vehicle is at a complete stop, the
SOC of the HV Battery is greater than 76%, and the transmission is in the Drive position with
the brakes applied?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Disconnect the cooling fans.
A. Disconnect the cooling fan
motor connector.
B. Rotate the lever while pushing the lock
and disconnect the cooling fan
motor connector.
Figure 1.
2
c
NOTICE
After disconnecting the cooling fan
motor connector, make sure that dirt,
water, or other foreign matter does
NOT contact the connecting parts of
the cooling fan motor connector.
1
c
1
Cooling Fan Motor Connector
2
Lock
3. Flash reprogram the hybrid vehicle control computer.
NOTE
The battery diagnostic tool MUST be used in 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.
Follow the procedures outlined in L-SB-0036-22, GTS+ ECU Flash Reprogramming With
Security Signature, and flash reprogram the hybrid vehicle control computer with the NEW
calibration file update.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
L-SB-0018-25
February 24, 2025
Page 5 of 5
Shudder Sensation When Vehicle at Complete Stop
Repair Procedure (continued)
4. Connect the cooling fans.
A. Connect the cooling fan
motor connector.
Figure 2.
B. Rotate the lever to lock it.
2
c
NOTICE
When connecting the cooling fan
motor connector, make sure that
the connecting parts of the cooling
fan motor connector are free of
dirt, water, or other foreign matter.
Be sure to securely connect the
cooling fan motor connector.
1
c
1
Cooling Fan Motor Connector
2
Lock
5. Using GTS+, clear ANY DTCs and test-drive the vehicle to confirm normal operation and the
condition is no longer present.
© 2025 Lexus, a division of Toyota Motor Sales, USA
Submitted to NHTSA on 03/07/2025
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TSB/Document ID: L-SB-0018-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-24
MFR Internal Campaign ID/Software Version: L-SB-0018-25
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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