TSB 24LC03 — Lexus Service campaign
24LC03 is a service campaign on file with NHTSA for the Lexus RX, 2023–2024 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. The Engine Control Computer software has a programing error which can cause the exhaust variable valve timing (VVT) locking pin to temporarily get stuck. When this happens, an engine malfunction indicator lamp (MIL) can appear on the dashboard as well as diagnostic trouble code…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. 24LC03 is filed as a service campaign, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years 24LC03 names
Every document filed under 24LC03
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| 24LC03 | September 19, 2024 | Service campaign |
| 24LC03 | September 18, 2024 | Service campaign |
| 24LC03 | September 18, 2024 | Service campaign |
What 24LC03 covers
Engine, Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 24LC03?
24LC03 is a service campaign filed with NHTSA by Lexus, covering the Lexus RX across the 2023–2024 model years. NHTSA's summary reads: The Engine Control Computer software has a programing error which can cause the exhaust variable valve timing (VVT) locking pin to temporarily get stuck. When this happens, an engine malfunction indicator lamp (MIL) can appear on the dashboard as well as diagnostic trouble code…
Which vehicles does 24LC03 cover?
NHTSA's file names Lexus RX (2023–2024). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 24LC03 a recall, and is the repair free?
24LC03 is filed as a service campaign, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of 24LC03?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 24LC03, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 24LC03. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.