*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Power train
While driving my 2026 Lexus RX350h, the vehicle suddenly lost propulsion and would not respond to the accelerator. After coming to a stop, pressing the gas pedal did nothing. I had to shift to Park, press the brake, and press the Start button to get the vehicle moving again. A short time later, while making a right turn, the vehicle lost power again while still moving, forcing me to repeat the ParkâBrakeâStart sequence in the middle of the turn. This is a serious safety issue because the hybrid system appears to shut down unexpectedly, causing loss of propulsion in traffic. The vehicle was towed to the dealer, who stated the battery was âgood,â but no cause was identified. This…
Oct 21, 2026Exterior lighting
There is an extreme dark shadow or cutoff line on the driver-side headlight
Oct 7, 2026Structure › Body
The factory-installed front spindle grille and bumper assembly on this brand-new 2026 Lexus RX 350 suffered severe thermal material failure, resulting in extensive warping, bubbling, and physical melting under normal, predictable outdoor ambient daylight parking conditions. This thermal deformation poses an immediate safety hazard because the deformed exterior structure directly houses the vehicleâs critical front-facing Advanced Driver Assistance Systems (ADAS). This includes the pre-collision safety radar sensors, pedestrian detection cameras, and proximity sensors located right behind the front Lexus emblem and grille assembly. The physical distortion of the plastic mounting housing…
Sep 15, 2026Electrical system
Push brake to start. Displays car not ready low battery. Seat memory not retaining setting. Windshield wiper speed will not remove water fast enough
Sep 25, 2026Electrical system
(1)The original 12-V battery was replaced by the dealership on XXX (after 5-week and 120-mile usage) with a new one, model: 00544-MFH50, S/N [XXX], 540CCA and 100 RC. (2)Upon double-checking with the 2026 Lexus Ownerâs Manual for RX450H+, on Page 605, it clearly stated that when replacing the battery, its case size should be the same as the previous one (LN3) â¦â¦. with a performance rating of CCA of 603A or higher. (3)The dealership indicated the 00544-MFH50 was the right battery based on the VIN number per Lexus internal database. The database also showed another battery model: 28800-31572. (4)However, according to the battery information at [XXX], both 00544-MFH50 and 28800-31572 are…
Sep 11, 2026Service brakes
1. What component or system failed or malfunctioned and is it available for inspection upon request? Component/System: Brake-by-wire hydraulic fluid loop, master cylinder assembly, or stroke simulator system on a 2026 Lexus RX 350h (VIN: [XXX]; 2,450 miles). Cash-purchased new in XXX. Weak, unrestricted hydraulic pressure. The brake pedal depresses to within 1 inch of the floorboard, bottoming out against the physical mechanical extension rod limit. A Reserve Distance Measurement confirms the vehicle fails to meet the minimum Lexus safety standard of 86 mm (3.39 inches) of pedal reserve distance. 2. How was your safety or the safety of others put at risk? Safety Hazard: Operating at less…
Sep 13, 2026Electrical system
The 12-V battery of a brand-new Lexus RX450h+ died suddenly without any warning, only about 5 weeks into regular driving, with ~120 miles on the odometer. Lexus Roadside Assistance was called in to jump-start the battery, and the vehicle was driven directly to the dealership (about 5 miles away) for service. The dealership service checked the battery and indicated it âpassedâ all tests and is in "good" condition. However, the service technicians could not identify or suggest any reason for such a sudden death of virtually a brand-new battery (5-week new, 120-mile usage). The dealership indicated that there is nothing they can do for the battery because Lexus warranty protocol would not…
Sep 4, 2026Electrical system
2026 Lexus RX 350h Luxury AWD Hybrid. Component Affected: ELECTRICAL SYSTEM:12V BATTERY, DIGITAL/ELECTRONIC LOCKS I am experiencing a severe and persistent 12V parasitic battery drain on my 2026 Lexus RX 350h. The vehicle's auxiliary 12V battery drains completely to a dead state if left parked and unused for only two to three days. This is an ongoing manufacturing or software defect that prevents the auxiliary battery from maintaining an adequate charge, resulting in routine vehicle failure. Safety Risks and Incidents: This parasitic drain introduces several critical safety hazards: 1. Emergency Entrapment and Lockout Risk: Because this vehicle relies entirely on electronic door latches…
Aug 31, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
