Lexus bulletin L-SB-0015-23
What it saysTSB: Hybrid and battery electric vehicles are equipped with two types of batteries: ?Hybrid Vehicle (HV) battery ?Auxiliary (12V) battery If the hybrid vehicle or battery electric vehicle is placed into storage… NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Jan 3, 2024, received Apr 17, 2023, about the electrical system — 2 documents under this number. It names 9 model years (2024). 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 communicationTSB: Hybrid and battery electric vehicles are equipped with two types of batteries: ?Hybrid Vehicle (HV) battery ?Auxiliary (12V) battery If the hybrid vehicle or battery electric vehicle is placed into storage, the State-Of-Charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. Perform the following maintenance service for the HV battery and auxiliary battery.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| L-SB-0015-23 | Service bulletin | Jan 3, 2024 | 10251066 | not found |
| L-SB-0015-23 | Service bulletin | Mar 13, 2023 | 10234319 | not found |
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.
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Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2024 Lexus NON-Existant 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 8 model years this bulletin names have filed 176 complaints with NHTSA since 2015. 51 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 2024 Lexus NX 350. The contact stated that while his wife was driving approximately 40 MPH, the instrument cluster went blank. No warning lights were illuminated. The vehicle was taken to the local dealer, but no fault was found. The failure was self-corrected. The vehicle was not diagnosed or repaired.
2024 Lexus NX · Electrical System · filed with NHTSA Mar 31, 2026 · ODI 11728248
I am reporting a safety concern involving a 2024 Lexus RZ300e related to battery range performance and charging requirements in cold weather. In real-world winter conditions in Massachusetts, the vehicle experiences severe range loss, requiring excessive and repeated public charging to remain operable.
2024 Lexus RZ · Electrical System · filed with NHTSA Dec 27, 2025 · ODI 11707267
Vehicle Completely Locks itself. Not able to open doors. Even Not able to open with keyless remote fob. Not able to take Charging cable connection out of vehicle. It has happened twice. Lexus was made aware of this issue. I have been stranded twice. It is a safety issue and requesting NHTSA to recall
2024 Lexus RZ · Electrical System · filed with NHTSA Nov 7, 2025 · ODI 11698167
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 group70 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-SB-0015-23 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-0015-23 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-0015-23 cover?
The manufacturer filed it against 9 model years: 2024 Lexus ES, 2024 Lexus LC, 2024 Lexus LS, 2024 Lexus NX, 2024 Lexus RX, 2024 Lexus RZ and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.