NHTSA ID Number: 10253232
Manufacturer Communication Number: L-TT-0328-23 Rev
TSB/Document Date: 2024-04-15
Summary
TT: Some 2023MY RX500h may require a transaxle and transmission control module (TCU) replacement for low-speed vibration from Transaxle and/or DTC for P084000/P084087.
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TSB/Document ID: L-TT-0328-23 Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2024-03-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION
MFR Component System:
MFR Component Subsystem:
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Tech Tip L-TT-0328-23
March 12, 2024
Subject
Market
Vibration from Transmission at Slow Speeds (Under
8mph) and/or DTC P084000/P084087 is present
USA
Service Category
Section
Drivetrain
Automatic Transmission/Transaxle
Applicability
2023MY RX500h
APPLICABLE VEHICLES
2023
RX500H
CONDITION
Some 2023MY RX500h may require a transaxle and transmission control module (TCU) replacement
for low-speed vibration from Transaxle and/or DTC for P084000/P084087.
RECOMMENDATIONS
HINT: If the Transaxle is replaced, take a photo of the Transmission Compensation Code Label before
installation it will be used in later steps.
NOTE: Use the Most Current GTS+ software version V2023.04.003.02 or higher.
Confirm part number of TCM (TCU) currently installed or to be installed.
If TCM PN 89530-48501:
Perform ECU Configuration, refer to Repair Manual Doc ID: RM1000000023QUU (SETUP:
WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION; 2023 2024 MY RX350 RX350H RX450H+ RX500H [10/2022 - ???????] ). the steps as outlined as
many times as necessary to configure all ECUs.
Refer to Doc ID: RM1000000023QUT(SETUP: WHEN REPLACING OR
REMOVING/INSTALLING PARTS: WORK PROCEDURE; 2023 MY RX350 RX350H RX450H+
RX500H [10/2022 - 08/2023] ); “Work Procedure Necessary When Replacing Parts”, for
“Transaxle assembly with motor”. Perform these 7 steps in order as listed below using GTS+
and following on screen instructions:
1.
2.
3.
4.
5.
6.
7.
A/T Compensation Code Reset (Doc ID: RM1000000027WRA)
A/T Code Registration (Arbitrary Code) (Doc ID: RM1000000027WR9)
Front Resolver Correction Value Writing (Doc ID: RM1000000027BU6)
Reset Memory (Doc ID: RM1000000027WRA)
K0/WSC Learning Value Reset (Doc ID: RM1000000027WRA)
WSC Deterioration Estimate Reset (Doc ID: RM1000000027WRA)
Road Test (Doc ID: RM1000000027WRA)
Expires on
Ver. 5.0 01/01/2023 L
03/12/2024
Rev4
© 2023, Lexus
, a Division of Toyota Motor Sales, USA
Page 1 of 2
Tech Tip L-TT-0328-23
March 12, 2024
Subject
Market
Vibration from Transmission at Slow Speeds (Under
8mph) and/or DTC P084000/P084087 is present
USA
Applicability
2023MY RX500h
RECOMMENDATIONS
If TCM PN 89530-48500:
Refer to Repair Manual Doc ID: RM1000000023QUU; “ECU Configuration”. Perform steps as
outlined as many times as necessary to configure all ECUs.
Refer to Doc ID: RM1000000027WRA; “Initialization Perform Road Test to Allow TCM to Lean”.
WARNING – If the incorrect RM steps are performed, (except Road Test) this can lead to DTCs
that will not clear or harsh engagement into D/R range until additional steps are performed. If
ECU Configuration is not performed, this can lead to No Ready ON condition. If this occurs,
please create a TAS case and contact your FTS.
LINK REFERENCES
1.
2.
3.
4.
5.
SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION;
2023 - 2024 MY RX350 RX350H RX450H+ RX500H [10/2022 - ???????]
SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE;
2023 MY RX350 RX350H RX450H+ RX500H [10/2022 - 08/2023]
PC60 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID TRANSAXLE SYSTEM:
INITIALIZATION; 2023 - 2024 MY RX500H [10/2022 - ???????]
PC60 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID TRANSAXLE SYSTEM:
REGISTRATION; 2023 - 2024 MY RX500H [10/2022 - ???????]
HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for 1MotorHEV Model): UTILITY; 2023 - 2024 MY RX500H [10/2022 - ???????]
Expires on
Ver. 5.0 01/01/2023 L
03/12/2024
Rev4
© 2023, Lexus, a Division of Toyota Motor Sales, USA
Page 2 of 2
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