TSB LSB004323 — Lexus Service bulletin
LSB004323 is a service bulletin on file with NHTSA for 2 Lexus models, 2013–2018 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. TSB: 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.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years LSB004323 names
Every document filed under LSB004323
| Document ID | Filed | Type |
|---|---|---|
| LSB004323 | August 21, 2023 | Service bulletin |
Questions buyers ask
What is TSB LSB004323?
LSB004323 is a service bulletin filed with NHTSA by Lexus, covering 2 Lexus models across the 2013–2018 model years. NHTSA's summary reads: TSB: 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.
Which vehicles does LSB004323 cover?
NHTSA's file names Lexus ES (2013–2018); Lexus RX (2013–2015). 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 LSB004323 a recall, and is the repair free?
No. LSB004323 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of LSB004323?
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 LSB004323, 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 LSB004323. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.