Service bulletins for the 2023 Lexus IS
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
57 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| LSB006023 | 2023-12-26. Service bulletin. ENGINE AND ENGINE COOLING. TSB: Some 2019 ? 2023 model year ES 350, 2018 ? 2023 model year IS 350, IS 300, RC 350, RC 300, 2016 ? 2022 model year RX 350, and 2016 ? 2020 model year GS 350 vehicles equipped with a 2GR-FKS engine may exhibit a knocking noise from the vacuum pump at idle. Follow the Repair Procedure in this bulletin to improve this condition. |
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| LSB004323 | 2023-10-16. Service bulletin. UNKNOWN OR OTHER. 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. |
| LTT032623 | 2023-10-16. Service bulletin. UNKNOWN OR OTHER; COMMUNICATION:MANUFACTURER TELEMATICS. TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction with the Repair Manual, are for dealership personnel to assist those customers with user issues, user errors, and compatibility issues with other vehicle systems and external applications encountered while operating telematics features. |
| L-SB-0037-23 | 2023-08-28. Service bulletin. WHEELS. TSB: Some 2021 ? 2024 model year Lexus vehicles use hub bolts in place of studs/nuts to fasten the wheels to the vehicle. If non-compatible wheels or hub bolts/nuts are installed, there is increased risk that the wheel(s) could come off resulting in a crash. This service bulletin outlines the physical differences and precautions that should be taken when servicing different wheel and wheel fastener types. |
| 23LJ01-2 | 2023-07-31. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. TI: TECHNICAL INSTRUCTIONS FOR 23LJ01 Second Key Delivery Program Multiple Models and Model Years |
| 23LJ01-1 | 2023-07-31. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. RL: The supply of Smart Keys available for Lexus vehicles has been temporarily limited to one (1) on select models since November 2022 due to global semiconductor shortages impacting certain microchips. Affected vehicles have been delivered with only one Smart Key and a second mechanical key. |
| 23LJ01 | 2023-07-31. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. DP: The subject vehicles were delivered with only one (1) Smart Key on select models since October 2022 due to a global semiconductor shortage impacting certain microchips. The affected vehicles were delivered with one (1) Smart Key and a second mechanical key. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.