NHTSA ID Number: 11020653
Manufacturer Communication Number: L-SB-0033-24
TSB/Document Date: 2025-07-10
Summary
Some 2023 – 2024 model year RX 350, RX 350h, RX 500h, and 2024 model year TX 350 and TX 500h vehicles may exhibit a rotational clicking noise from one or both front drive shaft assemblies when accelerating while making turns. This condition may occur without a grease leak present on the front drive shaft assemblies. An updated front drive shaft assembly is available to resolve this condition.
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TSB/Document ID: L-SB-0033-24
Replacement Service Bulletin Number:
MFR Communication Date: 2025-06-06
MFR Internal Campaign ID/Software Version: L-SB-0033-24
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
L-SB-0033-24
Rev1
September 25, 2024
Rotational Clicking Noise From Front Drive Shaft
Assembly on Acceleration
Service
Category
Drivetrain
Section
Drive Shaft/Propeller Shaft
Market USA and
Mexico
Applicability
YEAR(S)
MODEL(S)
2023 - 2024
RX350, RX350H, RX500H
2024
TX350, TX500H
ADDITIONAL INFORMATION
REVISION NOTICE
June 06, 2025 Rev1:
The Applicability has been updated to include 2023 – 2024 model year RX 500h, and
2024 model year TX 500h vehicles.
The Introduction, Production Change Information, Parts information, Required Tools &
Equipment, and Repair Procedure sections have been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2023 – 2024 model year RX 350, RX 350h, RX 500h, and 2024 model year TX 350 and
TX 500h vehicles may exhibit a rotational clicking noise from one or both front drive shaft
assemblies when accelerating while making turns. This condition may occur without a grease leak
present on the front drive shaft assemblies. An updated front drive shaft assembly is available to
resolve this condition. Follow the Repair Procedure in this bulletin to address this condition.
© 2025 Lexus
, a division of Toyota Motor Sales, USA
Page 1 of 6
L-SB-0033-24
Rev1
September 25, 2024
Page 2 of 6
Rotational Clicking Noise From Front Drive Shaft Assembly on Acceleration
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
2WD
2T2BAMBA#RC036793
RX 350
2T2BAMCA#RC069181
TMMC
RX 350h
AWD
RX 500h
2T2BBMCA#RC044789
2T2BCMEA#RC018395
2WD
5TDAAAA6#RS008033
TX 350
TMMI
5TDAAAB6#RS011419
AWD
TX 500h
5TDABAB6#RS004385
Warranty Information
For USA Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
TC2408
R & R the Front Drive Shaft Assembly (One Side)
1.8
91
50
Combo A
Opposite Side
0.3
43420-0E###*
43410-0E###*
*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 Powertrain Warranty. This warranty is in effect for
72 months or 70,000 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
L-SB-0033-24
Rev1
September 25, 2024
Page 3 of 6
Rotational Clicking Noise From Front Drive Shaft Assembly on Acceleration
Warranty Information (continued)
For Mexico Market
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
TC2408
R & R the Front Drive Shaft Assembly (One Side)
1.8
91
50
Combo A
Opposite Side
0.3
43420-0E###*
43410-0E###*
*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
MODEL(S)
DRIVETRAIN
PART NUMBER
PART NAME
QTY
43420-0E280
Shaft Assy, Fr Drive, LH*
1
43410-0E460
Shaft Assy, Fr Drive, RH*
1
43420-0E280
Shaft Assy, Fr Drive, LH*
1
43410-0E450
Shaft Assy, Fr Drive, RH*
1
43420-0E280
Shaft Assy, Fr Drive, LH*
1
43410-0E460
Shaft Assy, Fr Drive, RH*
1
43420-0E290
Shaft Assy, Fr Drive, LH*
1
43410-0E470
Shaft Assy, Fr Drive, RH*
1
43420-0E340
Shaft Assy, Fr Drive, LH*
1
43410-0E520
Shaft Assy, Fr Drive, RH*
1
43420-0E340
Shaft Assy, Fr Drive, LH*
1
43410-0E530
Shaft Assy, Fr Drive, RH*
1
43420-0E350
Shaft Assy, Fr Drive, LH*
1
43410-0E550
Shaft Assy, Fr Drive, RH*
1
90080-17238
Lock Nut (for Fr Axle Shaft)**
–
2WD
RX 350
RX 350h
AWD
RX 500h
2WD
TX 350
AWD
TX 500h
ALL
*Order the part(s) corresponding to the affected side and vehicle by searching in the Electronic Parts Catalog using the
VIN filter.
**Order one lock nut per affected front drive shaft assembly.
© 2025 Lexus, a division of Toyota Motor Sales, USA
L-SB-0033-24
Rev1
September 25, 2024
Page 4 of 6
Rotational Clicking Noise From Front Drive Shaft Assembly on Acceleration
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
QTY
ChassisEAR™ (or equivalent)
ADE
JSPSM06606
(JS Products)
1
NOTE
A mechanic’s stethoscope or similar tool may be used in place of ChassisEAR™.
ChassisEAR™ may be ordered by visiting the Lexus Tools and Equipment Program website at
Home – Service Resources – Lexus Tools and Equipment Program or by calling
1-800-368-6787 (USA) or 01-55-50103041 (Mexico).
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVi*
Techstream Lite
PART NUMBER
QTY
TSADVUNIT
ADE
Techstream Lite (Green Cable)
TSLITEPDLR01
TSLP2DLR01
*Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
GTS+ software version 2025.01.005.02 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.
Repair Procedure
1. Confirm the condition.
Does the vehicle exhibit a rotational clicking noise when accelerating while making turns?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2025 Lexus, a division of Toyota Motor Sales, USA
1
L-SB-0033-24
Rev1
September 25, 2024
Page 5 of 6
Rotational Clicking Noise From Front Drive Shaft Assembly on Acceleration
Repair Procedure (continued)
2. Place the vehicle on a lift and install the
ChassisEAR™ (or equivalent) on the front
knuckle assembly, as shown in Figure 1, to
help isolate the source of the noise.
Figure 1.
1
1
ChassisEAR™ on the Front Knuckle Assembly
3. Test drive the vehicle.
Is one or both front drive shaft assemblies the source of the rotational clicking noise?
YES — Continue to step 4.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
4. Remove the affected front drive shaft assembly.
Refer to TIS, applicable model and model year Repair Manual:
2023 – 2024 RX 350 and RX 500h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for T24A-FTS) – Removal
2023 / 2024 RX 350h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for A25A-FXS) – Removal
2024 TX 350 and TX 500h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for T24A-FTS) – Removal
© 2025 Lexus, a division of Toyota Motor Sales, USA
L-SB-0033-24
Rev1
September 25, 2024
Page 6 of 6
Rotational Clicking Noise From Front Drive Shaft Assembly on Acceleration
Repair Procedure (continued)
5. Install the NEW front drive shaft assembly using the NEW lock nut.
Refer to TIS, applicable model and model year Repair Manual:
2023 – 2024 RX 350 and RX 500h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for T24A-FTS) – Installation
2023 / 2024 RX 350h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for A25A-FXS) – Installation
2024 TX 350 and TX 500h:
Drivetrain – Drive Shaft / Propeller Shaft –
Front Drive Shaft Assembly (for T24A-FTS) – Installation
6. Perform steps 4 and 5 for the other front drive shaft assembly if necessary.
7. Perform a grease distribution test drive by driving the vehicle continuously for 5 minutes
above 40 mph. If unable to perform this drive pattern, alternately drive the vehicle on a dyno
continuously for 5 minutes above 40 mph, if it is safe to do so.
NOTICE
Failure to perform the grease distribution test drive procedure may lead to joint damage and
false detection of the noise after replacement.
8. Confirm the condition is no longer present.
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