# Service bulletin L\-TT\-0341\-25

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: 11018326
- Published by NHTSA: 2025\-05\-15
- Manufacturer's number: L\-TT\-0341\-25
- Manufacturer's date: 2025\-04\-02
- Campaign id or software version: L\-TT\-0341\-25
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018326-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11018326-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

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

## Other bulletins for the same vehicles and component

- [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.
- [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.
- [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
- [L\-SB\-0043\-23 Rev1](/bulletins/11020656.md), 2025-07-10, Service bulletin: ELECTRICAL SYSTEM. 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.
- [22LD03](/bulletins/11020649.md), 2025-07-10, Service bulletin: ELECTRICAL SYSTEM. 22LD03 Expired on May 31, 2025 TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN 22LD03 REPROGRAMMING FOR FORWARD RECOGNITION CAMERA CERTAIN 2022 MODEL YEAR LEXUS LS500
- [22LD03](/bulletins/11020647.md), 2025-07-10, Service campaign: ELECTRICAL SYSTEM. 22LD03 Expired on May 31, 2025 The subject vehicles are equipped with a Road Sign Assist \(RSA\) driver assistance feature. This feature uses the forward recognition camera to detect objects and provide information to the driver about specific road signs. Due to an incorrect software program, the RSA feature is unable to display road sign information.
- [L\-TT\-0341\-25](/bulletins/11019329.md), 2025-06-06, Service bulletin: ELECTRICAL SYSTEM. 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.
- [L\-TT\-0340\-25](/bulletins/11019328.md), 2025-06-06, Service bulletin: ELECTRICAL SYSTEM. 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.
- [L\-TT\-0340\-25](/bulletins/11018325.md), 2025-05-15, Service bulletin: ELECTRICAL SYSTEM. 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.

JSON: [/v1/bulletins/11018326](/v1/bulletins/11018326)

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