2020 Jeep Wrangler Service and Repair Manual

2020 Jeep Wrangler 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 and reference data (where provided)
• Electrical diagnostics with wiring diagrams
• Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

• Unlimited Rubicon Sport Utility 4-Door
• Unlimited North Edition Sport Utility 4-Door
• Unlimited Willys Sport Utility 2-Door
• Unlimited Rubicon Deluxe Sport Utility 4-Door
• Unlimited Freedom Sport Utility 4-Door
• Unlimited Recon Sport Utility 2-Door
• Sport S Sport Utility 2-Door
• Unlimited Sport S Sport Utility 4-Door
• Unlimited Sport Sport Utility 4-Door
• Unlimited Sport Altitude Sport Utility 4-Door
• Unlimited Recon Sport Utility 4-Door
• Rubicon Sport Utility 2-Door
• Unlimited Sahara Sport Utility 4-Door
• Unlimited Sahara Altitude Sport Utility 4-Door
• Sport Sport Utility 2-Door
• Unlimited Black and Tan Sport Utility 2-Door
• Unlimited Willys Sport Utility 4-Door
• Unlimited Rubicon Xtreme Sport Utility 4-Door
• Rubicon Deluxe Sport Utility 2-Door
• Unlimited Freedom Sport Utility 2-Door
• Unlimited Black and Tan Sport Utility 4-Door

Engines covered

• 3.0L 2987CC 182Cu. In. V6 DIESEL DOHC Turbocharged
• 2.0L 1997CC 122Cu. In. l4 GAS DOHC Turbocharged
• 3.6L 3604CC 220Cu. In. V6 GAS DOHC Naturally Aspirated
• 2.0L 1997CC 122Cu. In. l4 MILD HYBRID EV-GAS (MHEV) DOHC Turbocharged
• --
• 3.6L 3604CC 220Cu. In. V6 MILD HYBRID EV-GAS (MHEV) DOHC Naturally Aspirated

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
• Hybrid & Electric Vehicle Systems
• Steering
• Suspension
• Transmission, Clutch, & Transfer Case
• Wiring Diagrams