Lexus bulletin LSB001523
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 Aug 28, 2023, received Oct 16, 2023, about the fuel/propulsion system. It names 7 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.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LSB001523 | Service bulletin | Aug 28, 2023 | 10244125 | 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 6 model years this bulletin names have filed 127 complaints with NHTSA since 2015.
Automatic braking system failed after I experiencd a sudden acceleration Lexus inspected the vehicle an printed out all sorts of data which they are supposed to explain to me in45 days not prior warnig signs
2024 Lexus NX · Fuel/Propulsion System · filed with NHTSA Jul 20, 2025 · ODI 11674851
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 fuel/propulsion system
Source: same model, same component group1 other manufacturer communication filed against these Lexus models under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26LF01 | Emissions | Sep 10, 2026 | Under certain conditions, debris can accumulate inside the fuel cap causing potential fuel vapor leaks that can cause increased evaporative… |
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 LSB001523 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 LSB001523 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 LSB001523 cover?
The manufacturer filed it against 7 model years: 2024 Lexus ES, 2024 Lexus LC, 2024 Lexus NX, 2024 Lexus RX, 2024 Lexus RZ, 2024 Lexus UX and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.