Lexus bulletin L-SB-0028-26
What it saysSome 2018 – 2023 model year LC 500, and LC 500h, 2021 – 2023 model year LC 500c, 2018 – 2023 model year LS 500, and LS 500h, 2015 model year RX 450h, and 2018 – 2022 model year RX 450h vehicles may exhibit a condition… NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Sep 30, 2026, received Oct 8, 2026, about the service brakes. It names 17 model years (2018–2023). 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 2018 – 2023 model year LC 500, and LC 500h, 2021 – 2023 model year LC 500c, 2018 – 2023 model year LS 500, and LS 500h, 2015 model year RX 450h, and 2018 – 2022 model year RX 450h vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes (DTCs) C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal brake fluid leak inside the brake actuator.
Trouble codes it names: C1252 C1253 C1256 C1391
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| L-SB-0028-26 | Service bulletin | Sep 30, 2026 | 11038392 |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 44050-48320 | Actuator Assy, Brake w/Fluid | — | eBay Motors → |
| 04008-26448 | Actuator Assy, Brake w/Fluid | — | eBay Motors → |
| 47070-48020 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 04008-51148 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 47070-48080 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 04002-07348 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 44050-11010 | Actuator Assy, Brake w/Fluid | — | eBay Motors → |
| 04005-18142 | Actuator Assy, Brake w/Fluid | — | eBay Motors → |
| 47070-50070 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 04009-57350 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 47070-11030 | Pump Kit, Brake Booster w/Accumulator | — | eBay Motors → |
| 04009-57111 | Actuator Assy, Brake w/Fluid & | — | eBay Motors → |
Read by machine from the document NHTSA serves (7 pages), read Oct 9, 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 17 model years this bulletin names have filed 325 complaints with NHTSA since 2015. 34 of them name Service Brakes — 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's father owns a 2019 Lexus Ls500. While reversing at low speeds, the brake pedal traveled to the floorboard when it was depressed. The contact mentioned that the failure occurred twice while reversing. As a result, the vehicle crashed into a telephone utility box. The air bags did not deploy. A police report was not filed.
2019 Lexus LS · Service Brakes · filed with NHTSA Oct 3, 2019 · ODI 11265937
The contact owns a 2018 Lexus LS500. The contact stated that while depressing the brake pedal, there was an abnormally loud knocking under the vehicle near the suspension. The contact took the vehicle to the dealer however, the mechanic was unable to identify the cause of the failure. The vehicle had not been repaired.
2018 Lexus LS · Service Brakes · filed with NHTSA Feb 25, 2022 · ODI 11454114
1. At on , I was pulling into my gym's parking lot, when I stepped on the break to park my car, instead of stopping, the car accelerates rapidly and crashed through the other side of the sidewalk where there were light pole and cement walls, throwing me forward and backward with seat belt on, I was in total shock! 2.
2018 Lexus RX · Service Brakes · filed with NHTSA Oct 23, 2024 · ODI 11621427
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 service brakes
Source: same model, same component group11 other manufacturer communications filed against these Lexus models under the same component group (service brakes), newest first. The eight newest are listed; the rest are on the Lexus list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| L-SB-0053-25 REV2 | Service bulletin | Jul 1, 2026 | Some 2022 – 2026 model year LX 600, 2024 – 2026 model year GX 550, and 2025 – 2026 model year LX 700h vehicles may exhibit a condition where… |
| L-SB-0053-25 | Service bulletin | Feb 21, 2026 | Some 2024 – 2026 model year GX 550, 2022 – 2026 model year LX 600, and 2025 – 2026 model year LX 700h vehicles may exhibit a condition where… |
| L-SB-0013-20 OBSOLETE | Service bulletin | Jan 22, 2026 | OBSOLETE NOTICE January 22, 2026: This bulletin is now obsolete. Please see L-SB-0003-26. |
| L-SB-0003-26 | Service bulletin | Jan 21, 2026 | Certain 2018 – 2026 model year LC 500 and 2018 – 2025 LC 500h vehicles are equipped with high-friction brake pads specifically designed for… |
| L-SB-0036-24 OBSOLETE | Service bulletin | Nov 21, 2025 | OBSOLETE NOTICE November 21, 2025: This bulletin is now obsolete. Please see L-SB-0053-25 |
| L-SB-0036-24 REV1 | Service bulletin | Feb 10, 2025 | Some 2024 – 2025 model year GX 550 and 2022 – 2025 model year LX 600 vehicles may exhibit a condition where the front brakes produce a squea… |
| 24LE03 | Warranty extension | Jan 30, 2025 | Although the Brake Booster and Brake Booster Pump Assembly are covered by Lexus’s New Vehicle Limited Warranty for 4 years or 50,000 miles… |
| L-SB-0008-25 | Service bulletin | Jan 29, 2025 | Some 2016 – 2018 model year GS 450h, 2013 – 2016 model year LS 600h, and 2018 – 2021 model year NX 300h vehicles may exhibit a condition in… |
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-0028-26 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-0028-26 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-0028-26 cover?
The manufacturer filed it against 17 model years: 2023 Lexus LC, 2022 Lexus LC, 2021 Lexus LC, 2020 Lexus LC, 2019 Lexus LC, 2018 Lexus LC and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.