Driving a Lexus UX300h 2025. Making a right turn from an alley onto a driveway of a house in low speed. Then the car was malfunctioning and suddenly unintended accelerated, and the front end on the driver side hit the brick structure of garage. The car is equipped with Lexus Safety System + 3.0 with Pre-Collision System (PCS). However, the system did not give any warnings to the driver of an impending collision and the Crash Imminent Braking did not apply the brakes automatically to slow or stop the car avoiding the crash.
2025 Lexus UX 300h service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications, torque values, and reference data
- Electrical diagnostics with full wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
- Diagnostic trouble codes and troubleshooting flow
- Maintenance schedules and fluid capacities
Trims covered
- Base
- F Sport Design
- F Sport Handling
- Premium
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Maintenance & Lubrication
- Specifications
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Diagnostic Trouble Codes
- Technical Service Bulletins
- Wiring Diagrams
This is a new vehicle. It had been serviced according to the manufacturer’s recommendations at 5000 miles, around 3 weeks prior to the date of this incident. While driving on the freeway, I got an alert that the check engine light came on and there was a “malfunction in the electronic control of the engine, throttle, or automatic transmission has been detected”. Shortly after several more alerts popped up: “a malfunction in the hybrid system” and “a malfunction in the Drive Start Control System” were detected. While attempting to get to a safe location to pull over, the throttle no longer f
