Service bulletin L-SB-0034-23 Rev1
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 | 11006145 |
| Published by NHTSA | 2024-08-08 |
| Manufacturer's number | L-SB-0034-23 Rev1 |
| Manufacturer's date | 2024-07-08 |
| Campaign id or software version | L-SB-0034-23 Rev1 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
Some 2023 model year ES 250, ES 300h, ES 350, and UX 250h vehicles with DCM firmware version earlier than LG-N210ee9999-09 may exhibit a condition in which the vehicle customize settings menu is unavailable in the head unit after connecting to Techstream. Some 2023 model year ES 250, ES 350, LS 500, LS 500h, RX 350, RX 350h, RX 500h, and RZ 450e vehicles, and 2023 –2024 model year ES 300h and UX 250h vehicles with previous versions of DCM firmware (See Table 1 below) may exhibit a condition in which remote services are inoperative. A DCM firmware update is now available to address these conditions.
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 ES | 2023 |
|---|---|
| LEXUS ES HYBRID | 2023 to 2024 |
| LEXUS LS | 2023 |
| LEXUS LS HYBRID | 2023 |
| LEXUS RX | 2023 |
| LEXUS RX HYBRID | 2023 |
| LEXUS RZ | 2023 |
| LEXUS UX HYBRID | 2023 to 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 25LD01 | 2025-12-05. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Under Wire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start. |
|---|---|
| L-SB-0039-25 | 2025-10-08. Service bulletin. A new head unit software update is available for 2023 – 2024 model year ES 250, ES 300h, ES 350, LS 500h, and UX 250h; 2023 model year LS 500; 2024 model year GX 550, LC 500, LC 500c, and LC 500h vehicles equipped with Lexus Multimedia earlier than version 2170 (earlier than 2172 for GX 550). This software update includes the following improvements: •User Profile. •User interface. •Cloud navigation. •Intelligent assistant voice recognition. •Bug fixes. |
| 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-0009-24 Rev1 | 2025-07-10. Service bulletin. Some 2021 – 2024 model year ES 250 and 2022 – 2024 model year NX 250 vehicles with A25A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between 14°F – 41°F: •P030027 – Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold •P030000 – Random/Multiple Cylinder Misfire Detected •P030100 – Cylinder 1 Misfire Detected •P030200 – Cylinder 2 Misfire Detected •P030300 – Cylinder 3 Misfire Detected •P030400 – Cylinder 4 Misfire Detected |
| 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. |
| L-SB-0024-25 | 2025-06-06. Service bulletin. Some 2023 – 2025 model year RX 350, RX 350h, RX 500h, and 2024 – 2025 model year TX 350, TX 500h, and TX 550h+ vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the multi-information display (MID), or the driving assist information indicator is illuminated, along with one or more of the following Diagnostic Trouble Codes (DTCs) present: •C1AB413 – Outer Mirror Indicator (Module "B" Side) Circuit Open •C1AB513 – Outer Mirror Indicator (Module "A" Side) Circuit Open The BSM sensor software has been updated to reduce the possibility of these conditions. |
| 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 |