Service bulletin LSB000924
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10252264 |
| Published by NHTSA | 2024-04-01 |
| Manufacturer's number | LSB000924 |
| Manufacturer's date | 2024-02-21 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
TSB: Some 2021 ? 2024 model year ES 250 and 2022 ? 2024 model year NX 250 vehicles with A25A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between 14°F ? 41°F: ?P030027 ? Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold ?P030000 ? Random/Multiple Cylinder Misfire Detected ?P030100 ? Cylinder 1 Misfire Detected ?P030200 ? Cylinder 2 Misfire Detected ?P030300 ? Cylinder 3 Misfire Detected ?P030400 ? Cylinder 4 Misfire Detected Follow the Repair Procedure in this bulletin to address these conditions.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
Trouble codes named
P0300, P0301, P0302, P0303, P0304
| LEXUS ES | 2021, 2022, 2023, 2024 |
|---|---|
| LEXUS NX | 2022, 2023, 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| L-SB-0021-25 | 2026-04-08. Service bulletin. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete. |
|---|---|
| L-SB-0021-25 | 2026-03-07. Service bulletin. OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete. |
| L-SB-0052-25 | 2025-12-05. Service bulletin. Some 2022 – 2025 model year NX 450h+ and 2024 – 2025 RX 450h+ vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P019064 (Fuel Rail Pressure Sensor “A” Signal Plausibility Failure) present. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to address this condition. |
| 24LE02 | 2025-09-09. Service campaign. The specific condition covered by this program is for a small engine coolant leak that can occur from the flow shut-off valve that can allow coolant to drip on other parts of the vehicle. This can cause "Engine Maintenance Required" to be displayed on the instrument cluster or cause the A/C not to function normally. Although the flow shut-off valve is covered by Lexus’ New Vehicle Limited Warranty for 48 months or 50,000 miles (whichever comes first), we at Lexus care about the guests’ ownership experience. Lexus is providing coverage for repairs related to Flow Shut-off Valve Coolant Leak |
| L-SB-0051-24 Rev2 | 2025-07-10. Service bulletin. Some 2021 model year ES 250 and 2019 – 2021 model year ES 300h and UX 200 vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit a condition in which an “Engine Maintenance Required” message is displayed in the Multi-Information Display (MID). Additionally, the vehicle will exhibit DTC(s) P268111 (Engine Coolant Bypass Valve Circuit Short to Ground) and/or P268115 (Engine Coolant Bypass Valve Circuit Short to Battery or Open). |
| 24LE02 | 2025-04-08. Warranty extension. Although the flow shut-off valve is covered by Lexus’ New Vehicle Limited Warranty for 48 months or 50,000 miles (whichever comes first), we at Lexus care about the guests’ ownership experience. Lexus is providing coverage for repairs related to Flow Shut-off Valve Coolant Leak |
| 24LE02 | 2025-03-11. Warranty extension. Although the flow shut-off valve is covered by Lexus’ New Vehicle Limited Warranty for 48 months or 50,000 miles (whichever comes first), we at Lexus care about the guests’ ownership experience. Lexus is providing coverage for repairs related to Flow Shut-off Valve Coolant Leak |
| L-SB-0051-24 Rev1 | 2025-02-12. Service bulletin. Some 2021 ES 250 and 2019 – 2021 ES 300h and UX 200 model year vehicles equipped with an A25A-FKS, A25A-FXS, or M20A-FKS engine may exhibit a condition in which an “ EngineMaintenance Required” message is displayed in the Multi-Information Display (MID). Additionally, the vehicle will exhibit DTC(s) P268111 (Engine Coolant Bypass Valve Circuit Short to Ground) and/or P268115 (Engine Coolant Bypass Valve Circuit Short to Battery or Open). |
| 24LE02 | 2025-01-09. Warranty extension. CUSTOMER SUPPORT PROGRAM 24LE01 Certain 2019 -2021 Model Year ES300H Certain 2021 Model Year ES250 Certain 2019 -2020 Model Year UX200 Coverage for Flow Shut-off Valve Coolant Leak |
| 24LE02 | 2025-01-09. Warranty extension. Although the flow shut-off valve is covered by Lexus’ New Vehicle Limited Warranty for 48 months or 50,000 miles (whichever comes first), we at Lexus care about the owners’ ownership experience. Lexus is providing coverage for repairs related to Flow Shut-off Valve Coolant Leak |