Lexus bulletin L-SB-0034-23 REV2
What it saysSome 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… NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Oct 1, 2024, received Nov 8, 2024, about the electrical system — 1 document under this number: L-SB-0034-23 Rev2. It names 11 model years (2023–2025). 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 communicationSome 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 DCM firmware versions earlier than LG-N210jj3333-09, LG-N210nn1212-09, LG-N310kk4646-0I, LG-N310ll4A4A-0I, LG-N310mm8A8A-0I, LG-N310nnBLBM-0I, or LG-N310oo1B1B-0I may exhibit a condition in which remote services are inoperative. Some 2023 model year ES 250, ES 350, LS 500, LS 500h, and RZ 450e vehicles, 2023 – 2024 model year RX 350, RX 350h, RX 450h+, and RX 500h vehicles, 2024 model year GX 550, LC 500c, and UX 250h vehicles; and 2023 – 2025 model year ES 300h vehicles with DCM firmware versions earlier than LG-N210qq####-##, or LG-N310qq####-##, may exhibit a condition in which Apple Music® or Amazon Music streaming and/or remote services are inoperative. A DCM firmware update is now available.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| L-SB-0034-23 Rev2 | Service bulletin | Oct 1, 2024 | 11010325 |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| EL9085 | DCM Firmware Update | 0.3 hrs |
Read by machine from the document NHTSA serves (13 pages), read Sep 30, 2026. A part number is shown only where it matches Lexus’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 themA 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 11 model years this bulletin names have filed 190 complaints with NHTSA since 2015. 44 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 contact owns a 2023 Lexus ES 250. The contact stated that while driving approximately 40 MPH, the vehicle abruptly stalled. During the failure, the vehicle lost power brakes and power steering functionality, with the messages "High Power Consumption Temporarily Limited", "Braking Temporarily Disabled", and "Power Steering Temporarily…
2023 Lexus ES · Electrical System · filed with NHTSA Feb 17, 2026 · ODI 11718537
I was driving with traffic in a 35 mph zone on a moderately busy street. I got the alert to brake and did so immediately. I collided with the Jeep in front of me. The airbags did not deploy. The front hood of the car tented and a fire immediately broke out under the hood.
2025 Lexus ES · Electrical System · filed with NHTSA Mar 3, 2026 · ODI 11721821
On at least 7 occasions the driver was TRAPPED inside the vehicle. The car failed to start and the doors and windows locked. If the driver had not had a cell phone to make an emergency call he would have been locked inside until someone discovered the problem.
2023 Lexus RX · Electrical System · filed with NHTSA Dec 26, 2025 · ODI 11707085
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 group60 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 |
|---|---|---|---|
| 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… |
| 25LC03 | Service campaign | Aug 5, 2025 | A software update has been developed for certain 2023 model year RZ450e vehicles. It is designed to improve DC-charging performance, and enh… |
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-SB-0034-23 REV2 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-SB-0034-23 REV2 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-SB-0034-23 REV2 cover?
The manufacturer filed it against 11 model years: 2025 Lexus ES, 2024 Lexus ES, 2023 Lexus ES, 2024 Lexus GX, 2024 Lexus LC, 2023 Lexus LS and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.