Lexus bulletin L-TT-0341-25
What it saysTo assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Apr 2, 2025, received May 15, 2025, about the electrical system — 2 documents under this number. It names 46 model years (2018–2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTo 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.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| L-TT-0341-25 | Service bulletin | Apr 2, 2025 | 11019329 | |
| L-TT-0341-25 | Service bulletin | Apr 2, 2025 | 11018326 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themand 6 more on this site: 2021 Lexus RX, 2020 Lexus RX, 2022 Lexus UX, 2021 Lexus UX, 2020 Lexus UX, 2019 Lexus UX.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 46 model years this bulletin names have filed 518 complaints with NHTSA since 2015. 35 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The car started giving warnings as follows in the middle of the highway on , at 3 hours away from Chicago In order 1- Hybrid Malfunction, 2- Changing from 4 wheel to 2 wheel 3- Emergency Stop Vehicle And the car was full of the smell of burning I immediately turned off the car and called Lexus Roadside and towed off the vehicle to the…
2020 Lexus RX · Electrical System · filed with NHTSA Mar 29, 2024 · ODI 11580180
The contact owns a 2019 Lexus UX200. The contact stated while attempting to start the vehicle, the battery was drained. The contact stated that after jump starting the vehicle, while driving, the battery was not recharging. The needed another jump start after being turned off. The contact stated no warning light was illuminated.
2019 Lexus UX · Electrical System · filed with NHTSA Feb 7, 2023 · ODI 11506018
I purchased the 2022 Lexus RX 350 used a couple of months ago. While driving down the highway the instrument panel went blank. I was terrified. I continued to drive not knowing what speed I was driving. The instrument panel went panel came back minutes later. Another incident occurred when the car was parked in my driveway.
2022 Lexus RX · Electrical System · filed with NHTSA Jan 29, 2026 · ODI 11714267
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the electrical system
Source: same model, same component group69 other manufacturer communications filed against these Lexus models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Lexus list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 23LD04 | Service campaign | Jul 2, 2026 | DP: 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 inte… |
| L-SB-0011-26 | Service bulletin | May 7, 2026 | A 12V auxiliary battery with increased capacity has been released as an optional replacement. |
| L-SB-0057-22 OBSOLETE | Service bulletin | Feb 2, 2026 | OBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L-SB-0004-26. |
| L-SB-0004-26 | Service bulletin | Jan 23, 2026 | Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool (SST) USB flash d… |
| 25LD01 | Service campaign | Nov 13, 2025 | 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, wat… |
| 23LE05 | Service campaign | Sep 26, 2025 | Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Lexus New Vehicle Limited Warranty for 4 years or 50,00… |
| L-SB-0039-25 | Service bulletin | Sep 9, 2025 | 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 50… |
| L-TT-0326-23 REV2 | Service bulletin | Aug 19, 2025 | Some customers may experience operational difficulties with some telematics features which they cannot resolve on their own. These resources… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Lexus, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Lexus L-TT-0341-25 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the L-TT-0341-25 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Toyota warranty extension on file lists the ones Toyota has filed.
Which vehicles does L-TT-0341-25 cover?
The manufacturer filed it against 46 model years: 2022 Lexus ES, 2021 Lexus ES, 2020 Lexus ES, 2019 Lexus ES, 2023 Lexus GX, 2022 Lexus GX and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.