# Service bulletin L\-TT\-0326\-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: 11022963
- Published by NHTSA: 2025\-09\-09
- Manufacturer's number: L\-TT\-0326\-23 Rev2
- Manufacturer's date: 2025\-08\-19
- Campaign id or software version: L\-TT\-0326\-23 Rev2
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022963-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022963-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2019 to 2025 LEXUS ES
- 2019 to 2025 LEXUS ES HYBRID
- 2021 to 2025 LEXUS GX
- 2026 LEXUS GX
- 2021 to 2025 LEXUS IS
- 2018 to 2026 LEXUS LC
- 2018 to 2025 LEXUS LC HYBRID
- 2018 to 2026 LEXUS LS
- 2018 to 2025 LEXUS LS HYBRID
- 2022 to 2024 LEXUS LX
- 2025 to 2026 LEXUS LX HYBRID
- 2018 to 2026 LEXUS NX
- 2018 to 2026 LEXUS NX HYBRID
- 2018 to 2025 LEXUS RC
- 2020 to 2026 LEXUS RX
- 2020 to 2026 LEXUS RX HYBRID
- 2023 to 2026 LEXUS RZ
- 2024 to 2026 LEXUS TX
- 2024 to 2026 LEXUS TX HYBRID
- 2019 to 2022 LEXUS UX
- 2019 to 2026 LEXUS UX HYBRID

## Recalls for the same vehicles and component

- [26V393000](/recalls/nhtsa/26V393000.md), 2026-06-18: ELECTRICAL SYSTEM:PROPULSION SYSTEM
- [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.
- [L\-SB\-0057\-22 Rev2](/bulletins/11029870.md), 2026-03-07, Service bulletin: ELECTRICAL SYSTEM. OBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L\-SB\-0004\-26.
- [L\-SB\-0004\-26](/bulletins/11028717.md), 2026-02-11, Service bulletin: ELECTRICAL SYSTEM. Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool \(SST\) USB flash drive to update the map, points of interest, and system software.
- [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.
- [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.

JSON: [/v1/bulletins/11022963](/v1/bulletins/11022963)

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