The 2004 Toyota Highlander represents a significant entry into the mid-size crossover SUV market, renowned for its blend of reliability, practicality, and a comfortable ride. Built on a robust platform, this model offers a family-oriented interior and the versatility of available All-Wheel Drive, making it a strong contender against competitors like the Honda CR-V and Ford Escape. Powered by a 3.3L V6 engine producing 230 horsepower, it delivers capable performance for daily driving and various family needs. Toyota's established reputation for quality manufacturing further solidifies the Highlander's appeal as a durable and dependable vehicle. This comprehensive factory service manual provides detailed guidance for the maintenance and repair of the 2004 Toyota Highlander. Covering all vehicle systems, including powertrain, drivetrain, chassis, and electrical components, this manual offers factory-level detail for every procedure. Owners and technicians will find in-depth information on routine maintenance, diagnostic troubleshooting, and complete component overhaul, supported by technical specifications, wiring diagrams, and torque values. The goal is to empower users with the knowledge necessary to ensure the optimal performance, longevity, and safety of their Highlander. 🏷️ Basic Information Identification Make: Toyota Model: Highlander Year: 2004 Codes Chassis Code: XU20 👋 Introduction Market Position Vehicle Segment: Mid-size Crossover SUV (CUV) Competitive Analysis Key Competitors: Honda CR-V, Ford Escape, Nissan Murano, Subaru Outback, Mazda CX-7 Key Features Vehicle Appeal: Reliability, practicality, comfortable ride, available AWD, family-oriented interior 📋 Manual Details Coverage Areas Manual Coverage Scope: Comprehensive service and repair for all systems of the 2004 Toyota Highlander Page Count Estimated Page Count: Approximately 2500-3000 pages (typical for comprehensive factory service manuals) Manual Type Manual Classification: Official Factory Service Manual / Workshop Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain Systems: Engine, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System Drivetrain Systems: Transmission (Automatic), Drivetrain, Axles, Transfer Case (AWD models) Chassis Systems: Suspension (Front and Rear), Steering System, Brake System (ABS, EBD), Wheels and Tires Electrical Systems: Power Distribution, Ignition, Starting, Charging, Lighting, Instrumentation, Audio System, HVAC Controls, SRS Airbag System, Body Electrical, Wiper/Washer System Body And Interior: Body Panels, Doors, Windows, Interior Trim, Seats, Restraints Procedures Included Routine Maintenance: Oil and filter changes, fluid checks and top-offs, tire rotation, spark plug replacement, air filter replacement, cabin air filter replacement Diagnostic Procedures: Troubleshooting charts, DTC (Diagnostic Trouble Code) lookup and interpretation, symptom-based diagnostics Repair And Rebuild: Engine disassembly and reassembly, transmission servicing and overhaul, brake caliper and rotor replacement, suspension component replacement, electrical component repair/replacement Technical Specifications: Torque specifications, clearances, alignment data, diagnostic parameters, wiring diagrams Technical Depth Depth Of Information: Factory-level detail covering everything from basic maintenance to complete component overhaul and advanced diagnostics 📊 Manual Specifications File Format File Type: Searchable PDF Print Quality Printability: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: 1MZ-FE Engine Type: 3.3L V6, DOHC, 24-valve, 30-degree V-angle Performance Horsepower: 230 hp @ 5600 rpm (SAE Net) Torque: 242 lb-ft @ 3600 rpm (SAE Net) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with Sequential Port Injection Recommended Fuel: 87 Octane Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 5-speed Electronically Controlled Automatic Overdrive Optional Optional Transmission: N/A (Only Automatic available for 2004 model year) Features Transmission Control: ECT (Electronic Control Throttle) Mode, Sequential Shift 📐 Dimensions Exterior Length: 187.6 inches Width: 71.0 inches Height: 66.5 inches Wheelbase: 106.5 inches Interior Passenger Volume: Approx. 100.4 cu. ft. Cargo Cargo Volume Behind 3Rd Row: N/A (3rd row not available in 2004 model) Cargo Volume Behind 2Nd Row: Approx. 39.7 cu. ft. Weights Curb Weight FWD: Approx. 3,880 lbs Curb Weight AWD: Approx. 4,000 lbs 🛡️ Safety Features Ratings NHTSA Front Crash Test Driver: 5 Stars NHTSA Front Crash Test Passenger: 5 Stars NHTSA Side Impact Front Seat: 5 Stars NHTSA Side Impact Rear Seat: 5 Stars IIHS Front Offset Crash Rating: Good Active Features ABS: Standard Anti-lock Braking System (ABS) Ebd: Standard Electronic Brake-force Distribution (EBD) Traction Control: Available Traction Control (TRAC) Stability Control: Available Vehicle Stability Control (VSC) Passive Features Airbags: Driver and Front Passenger Airbags, Available Front Side-Impact Airbags and Roll-Sensing Side Curtain Airbags Seat Belts: Three-point seatbelts with pretensioners and force limiters for front occupants 💡 Technology Features Infotainment Audio System: AM/FM/CD Player with 6 speakers, Optional JBL Premium Audio System with subwoofer, Optional in-dash 6-disc CD changer Navigation: Optional DVD-based Navigation System Driver Assistance Cruise Control: Standard Electronic Cruise Control Connectivity Power Windows Locks Mirrors: Standard 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles or 6 months (whichever comes first), or 10,000 miles/12 months with synthetic oil and compatible filter Engine Air Filter Replacement: Every 30,000 miles or 24 months Cabin Air Filter Replacement: Every 15,000 miles or 12 months Spark Plug Replacement: Every 100,000 miles (Iridium-tipped...