Lexus bulletin L-SB-0034-24
What it saysSome 2022 – 2024 model year NX 250 and NX 350 vehicles may exhibit a condition where the vehicle displays both a System Malfunction Visit Your Dealer warning message and a brake warning light without any associated… NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Sep 25, 2024, received Nov 6, 2024, about the service brakes. It names 3 model years (2022–2024). 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 communicationSome 2022 – 2024 model year NX 250 and NX 350 vehicles may exhibit a condition where the vehicle displays both a System Malfunction Visit Your Dealer warning message and a brake warning light without any associated Diagnostic Trouble Codes (DTCs).
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| L-SB-0034-24 | Service bulletin | Sep 25, 2024 | 11010097 |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 44610-F6020 | Booster Assy, Brake | 1 | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| BR2406 | R&R Brake Booster Assembly | 2.9 hrs |
Read by machine from the document NHTSA serves (4 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 3 model years this bulletin names have filed 97 complaints with NHTSA since 2015. 8 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 incident happened on August 27, 2025, at about 8:30 in the morning when I was trying to park the car in a parking lot. As I came to the parking space to park the car with my foot on the brake pedal, the car accelerated all of a sudden after it had stopped before I could shift the gear lever to “Park”. The car went over the curb.
2024 Lexus NX · Service Brakes · filed with NHTSA Nov 15, 2025 · ODI 11699601
I was traveling on I-35 in heavy stop & go traffic, in an area under heavy construction where no shoulder was accessible, when the 18-wheeler in front applied their brakes consistent with the flow of traffic. I applied the brakes, but nothing happened causing me to roll forward and hit the back of the 18-wheeler.
2023 Lexus NX · Service Brakes · filed with NHTSA Oct 10, 2026 · ODI 11770313
My car moved forward from the parking spot and hit a building while I was trying to stop
2022 Lexus NX · Service Brakes · filed with NHTSA Mar 27, 2026 · ODI 11727578
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 group4 other manufacturer communications filed against the Lexus NX under the same component group (service brakes), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| L-SB-0007-26 | Service bulletin | Apr 9, 2026 | Some 2022 – 2024 model year NX 350h and NX 450h+ vehicles may exhibit a knocking from one or both rear brakes due to delamination of the rea… |
| L-SB-0027-25 REV1 | Service bulletin | Aug 18, 2025 | Some 2022 – 2025 model year NX 250, NX 350, NX 350h, and NX 450h+ vehicles may exhibit an abnormal noise when engaging the electronic parkin… |
| 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-0034-24 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-0034-24 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-0034-24 cover?
The manufacturer filed it against 3 model years: 2024 Lexus NX, 2023 Lexus NX, 2022 Lexus NX. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.