Service bulletin L-TT-0327-23 Rev2
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11003571 |
| Published by NHTSA | 2024-07-06 |
| Manufacturer's number | L-TT-0327-23 Rev2 |
| Manufacturer's date | 2024-04-12 |
| Campaign id or software version | L-TT-0327-23 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
EV Battery ECU Shows Software Update Available "YES", After Health Check
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| LEXUS RZ | 2023 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| L-TT-0326-23 Rev2 | 2025-09-09. Service bulletin. Some customers may experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction with the Repair Manual, are for dealership personnel to assist those customers with user issues, user errors, and compatibility issues with other vehicle systems and external applications encountered while operating telematics features. |
|---|---|
| 25LC03 | 2025-09-09. Service bulletin. TECHNICAL INSTRUCTIONS FOR SOFTWARE UPDATE 25LC03 EV CHARGING PERFORMANCE + DISPLAY SOFTWARE UPDATE CERTAIN 2023 RZ450e |
| L-SB-0043-23 Rev1 | 2025-07-10. Service bulletin. The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant leaks. |
| 25LC03 | 2025-06-06. Service bulletin. TECHNICAL INSTRUCTIONS FOR SOFTWARE UPDATE 25LC03 EV CHARGING PERFORMANCE + DISPLAY SOFTWARE UPDATE CERTAIN 2023 RZ450e |
| 25LC03 | 2025-06-06. Service campaign. A software update has been developed for certain 2023 model year RZ450e vehicles. It is designed to improve DC-charging performance, and enhance visualization of the remaining range, current state of charge (SOC), and real-life energy consumption |
| 25LC03 | 2025-06-06. Service bulletin. TECHNICAL INSTRUCTIONS FOR SOFTWARE UPDATE 25LC03 EV CHARGING PERFORMANCE + DISPLAY SOFTWARE UPDATE CERTAIN 2023 RZ450e |
| 25LC03 | 2025-06-06. Service campaign. SOFTWARE UPDATE 25LC03 Certain 2023 Model Year RZ450e EV Charging Performance + Display Software Update Frequently Asked Questions |
| 25LC03 | 2025-06-06. Service campaign. A software update has been developed for certain 2023 model year RZ450e vehicles. It is designed to improve DC-charging performance, and enhance visualization of the remaining range, current state of charge (SOC), and real-life energy consumption. |
| L-TT-0340-25 | 2025-06-06. Service bulletin. To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE. |
| 25LC03 | 2025-05-15. Service bulletin. TECHNICAL INSTRUCTIONS FOR SOFTWARE UPDATE 25LC03 EV CHARGING PERFORMANCE + DISPLAY SOFTWARE UPDATE CERTAIN 2023 RZ450e |