2025 Lexus IS 300 Service and Repair Manual

2025 Lexus IS 300 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

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