# Service bulletin L\-SB\-0021\-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: 11014220
- Published by NHTSA: 2025\-02\-12
- Manufacturer's number: L\-SB\-0021\-23 Rev2
- Manufacturer's date: 2025\-01\-30
- Campaign id or software version: L\-SB\-0021\-23 Rev2
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Some 2022 – 2025 model year Lexus vehicles may require the download and installation of vehicle specific software or configuration software when the Electronic Control Unit \(ECU\) is replaced. GTS\+ software has been modified to indicate when configuration software is required. A new Configure column has been added to the GTS\+ Health Check Results screen to show when configuration software is available for a specific ECU.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11014220-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11014220-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2024 to 2025 LEXUS GX
- 2025 LEXUS LS HYBRID
- 2022 to 2024 LEXUS LX
- 2025 LEXUS LX HYBRID
- 2022 to 2025 LEXUS NX
- 2022 to 2025 LEXUS NX HYBRID
- 2023 to 2025 LEXUS RX
- 2023 to 2025 LEXUS RX HYBRID
- 2023 to 2025 LEXUS RZ
- 2024 to 2025 LEXUS TX
- 2024 to 2025 LEXUS TX HYBRID

## Recalls for the same vehicles and component

- [26V341000](/recalls/nhtsa/26V341000.md), 2026-05-27: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [25V595000](/recalls/nhtsa/25V595000.md), 2025-09-11: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [23LD04](/bulletins/11036119.md), 2026-08-12, Service bulletin: ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR 23LD04 GPS Antenna May Not Receive Power CERTAIN 2024 Model Year NX250, NX350, NX350H, and NX450H\+
- [23LD04](/bulletins/11036118.md), 2026-08-12, Service campaign: ELECTRICAL SYSTEM. The subject vehicles are equipped with a GPS antenna wire harness that will not allow the GPS to operate when the vehicle is off as intended. As a result, the vehicle location cannot be identified through stolen vehicle location services when the vehicle is off.
- [25LD01](/bulletins/11026311.md), 2025-12-05, Service campaign: ELECTRICAL SYSTEM. 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](/bulletins/11024076.md), 2025-10-08, Service bulletin: ELECTRICAL SYSTEM. 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](/bulletins/11022963.md), 2025-09-09, Service bulletin: ELECTRICAL SYSTEM. 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](/bulletins/11022947.md), 2025-09-09, Service bulletin: ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR SOFTWARE UPDATE 25LC03 EV CHARGING PERFORMANCE \+ DISPLAY SOFTWARE UPDATE CERTAIN 2023 RZ450e
- [L\-SB\-0030\-25](/bulletins/11021725.md), 2025-08-08, Service bulletin: ELECTRICAL SYSTEM. Some 2024 model year NX 350 vehicles equipped with a T24A\-FTS engine may exhibit a MIL ON condition with Diagnostic Trouble Code \(DTC\) P042000 \(Catalyst System Efficiency Below Threshold Bank 1\) present. The Engine Control Module \(ECM\) \(SAE term: Powertrain Control Module/PCM\) logic has been modified to reduce the possibility of this condition.
- [24LC04](/bulletins/11021722.md), 2025-08-08, Service bulletin: ENGINE; ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 24LC04 REPROGRAMMING FOR ENGINE ELECTRONIC CONTROL UNIT CERTAIN 2022, 2023 and 2024 LX600 VEHICLES
- [24LC04](/bulletins/11021721.md), 2025-08-08, Service campaign: ELECTRICAL SYSTEM; ENGINE. Lexus provided certain specifications for horsepower when the LX600 was introduced into the market. It was recently discovered that these vehicles may have a horsepower rating lower than those specifications.
- [L\-SB\-0009\-24 Rev1](/bulletins/11020669.md), 2025-07-10, Service bulletin: ELECTRICAL SYSTEM. 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

JSON: [/v1/bulletins/11014220](/v1/bulletins/11014220)

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