A total of 4,374 Lexus LX600 models from the 2025 and 2026 model years are affected. Even flagship luxury SUVs are not immune to mechanical complications.
Lexus has alerted owners of certain new LX600 models to a potential safety risk that could increase the likelihood of a crash and, in rare circumstances, pose a fire hazard. The source of concern is the 10-speed automatic transmission installed in the brand’s top-tier SUV.
A recall notice filed with the National Highway Traffic Safety Administration (NHTSA) indicates that one of the transmission’s shift-control solenoids may fail. If a malfunction occurs, communication between the transmission control unit (ECU) and the engine ECU may be disrupted. Due to a flaw in the control software logic, the system may also fail to prevent an over-revving condition in specific gears.
In addition to the risk of transmission damage, the defect could cause a sudden loss of propulsion while the vehicle is in motion, elevating crash risk. Should the transmission housing sustain damage, fluid leakage may occur, which could increase the possibility of a fire.
Lexus confirmed that 4,374 units of the 2025–2026 LX600 equipped with the Aisin-supplied 10-speed automatic transmission are included in the recall. The affected SUVs were produced between November 22, 2024, and December 8, 2025.
Toyota Motor Corporation first detected a potential issue related to the transmission ECU’s control logic in October, prompting a deeper technical review.
Engineers analyzed remote vehicle data from impacted models in Japan before broadening the investigation to additional markets in January. Data from vehicles that had experienced linear solenoid failures was also examined.
“The additional data identified vehicles with linear solenoid failures and showed that certain subsequent customer usage patterns could potentially lead to an over-revving condition that would not be suppressed because of the software issue,” Toyota stated in its NHTSA filing.
The automaker said it cannot currently determine what percentage of vehicles may contain the defect. It also reported that it has not received any field reports or warranty claims connected to the issue.
Owners of affected LX600 models in the United States will receive recall notifications in April and will be instructed to bring their vehicles to authorized Lexus service centers. Dealers will update the transmission ECU software free of charge, a measure intended to correct the underlying control logic problem.
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