Lexus bulletin LSB004323
What it saysTSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. NHTSA’s full summary ↓
Lexus filed this with NHTSA as a service bulletin dated Aug 21, 2023, received Oct 16, 2023. It names 85 model years (2016–2024). 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: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| LSB004323 | Service bulletin | Aug 21, 2023 | 10244114 | 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.
Model years it names
Source: as the manufacturer filed themand 43 more on this site: 2020 Lexus LS, 2019 Lexus LS, 2018 Lexus LS, 2016 Lexus LS, 2023 Lexus LX, 2022 Lexus LX, 2021 Lexus LX, 2020 Lexus LX, 2019 Lexus LX, 2018 Lexus LX, 2017 Lexus LX, 2016 Lexus LX, 2023 Lexus NX, 2022 Lexus NX, 2021 Lexus NX, 2020 Lexus NX, 2019 Lexus NX, 2018 Lexus NX, 2017 Lexus NX, 2016 Lexus NX, 2023 Lexus RC, 2022 Lexus RC, 2021 Lexus RC, 2020 Lexus RC, 2019 Lexus RC, 2018 Lexus RC, 2017 Lexus RC, 2016 Lexus RC, 2024 Lexus RX, 2023 Lexus RX, 2022 Lexus RX, 2021 Lexus RX, 2020 Lexus RX, 2019 Lexus RX, 2018 Lexus RX, 2017 Lexus RX, 2016 Lexus RX, 2023 Lexus RZ, 2023 Lexus UX, 2022 Lexus UX, 2021 Lexus UX, 2020 Lexus UX, 2019 Lexus UX.
Also filed against model years this site has no page for: 2018 Lexus CT Hybrid; 2017 Lexus LFA.
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 83 model years this bulletin names have filed 1,338 complaints with NHTSA since 2015.
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.
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 LSB004323 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 LSB004323 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 LSB004323 cover?
The manufacturer filed it against 85 model years: 2017 Lexus CT, 2016 Lexus CT, 2023 Lexus ES, 2022 Lexus ES, 2021 Lexus ES, 2020 Lexus ES and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.