Vehicle Segment:
        
        
            Mid-size Crossover SUV
        
     
    
        
            Target Audience:
        
        
            Families seeking a versatile, reliable, and comfortable SUV with the Toyota reputation for quality.
        
     
    
    
        
            Key Competitors:
        
        
            Honda CR-V, Ford Escape, Nissan Murano, Subaru Outback, Chevrolet Equinox.
        
     
    
    
        
            Unique Selling Points:
        
        
            Renowned Toyota reliability, comfortable ride, spacious interior, available all-wheel drive, smooth V6 engine.
        
     
    
        
            Manual Value Proposition:
        
        
            Provides comprehensive, accurate, and officially licensed repair information, empowering owners and technicians to perform maintenance and repairs effectively, saving on dealership service costs.
        
     
 
    
    
    
        
            Engine:
        
        
            Detailed coverage of 3.0L (1MZ-FE) V6 DOHC engine, including maintenance, diagnostics, overhaul procedures, and component testing.
        
     
    
        
            Engine Management:
        
        
            Exhaust Gas Recirculation (EGR), Ignition system, Fuel Injection system, Emissions control systems.
        
     
    
        
            Transmission:
        
        
            U151E 5-speed automatic transmission, including overhaul, diagnostics, shift control, torque converter, and fluid service.
        
     
    
        
            Drivetrain:
        
        
            Front-Wheel Drive (FWD) and Electronic On-Demand Four-Wheel Drive (4WD) systems, including differential, driveshafts, and CV joints.
        
     
    
        
            Suspension:
        
        
            Front MacPherson strut and rear independent multi-link suspension, including alignment specifications, component replacement, and diagnostics.
        
     
    
        
            Brakes:
        
        
            Front and rear disc brakes (Vented front, Solid rear), ABS (Anti-lock Braking System), EBD (Electronic Brakeforce Distribution), Brake assist, Parking brake system.
        
     
    
        
            Steering:
        
        
            Power assisted rack and pinion steering, steering column, and related components.
        
     
    
        
            Electrical System:
        
        
            12V battery, charging system (alternator), starting system, lighting system (headlights, taillights, interior), fuses, relays, and wiring diagrams.
        
     
    
        
            Body And Frame:
        
        
            Exterior panels, interior trim, doors, glass, body sealing, collision repair information.
        
     
    
        
            HVAC:
        
        
            Heating, Ventilation, and Air Conditioning (HVAC) system, refrigerant servicing, blower motor, and climate control operation.
        
     
    
        
            Restraint Systems:
        
        
            SRS (Supplemental Restraint System) - Airbags, seatbelt pretensioners, and related sensors. (Cautionary notes for SRS system work are critical).
        
     
    
        
            Diagnostics And Troubleshooting:
        
        
            Diagnostic trouble codes (DTCs), symptom-based troubleshooting, diagnostic tools and procedures, on-board diagnostics (OBD-II).
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil change, filter replacement (oil, air, cabin), fluid checks and top-offs, tire rotation, spark plug replacement.
        
     
    
        
            Component Replacement:
        
        
            Alternator, starter motor, water pump, thermostat, fuel pump, brake pads/rotors, suspension components, exhaust system.
        
     
    
        
            Troubleshooting Fault Finding:
        
        
            Systematic diagnosis of malfunctions using schematics, test procedures, and diagnostic equipment.
        
     
    
        
            Engine Rebuilding:
        
        
            Complete engine overhaul procedures, including cylinder head removal/installation, piston and connecting rod service, crankshaft service.
        
     
    
        
            Transmission Overhaul:
        
        
            Detailed steps for disassembly, inspection, repair, and reassembly of the automatic transmission.
        
     
    
        
            Electrical Diagnostics:
        
        
            Troubleshooting wiring issues, sensor testing, actuator testing, and module diagnostics.
        
     
    
        
            Alignment Procedures:
        
        
            Front and rear wheel alignment specifications and adjustment procedures.
        
     
    
        
            Climate Control Service:
        
        
            Refrigerant system evacuation and recharge, leak testing, component replacement within the HVAC system.
        
     
    
        
            Body Repair:
        
        
            Panel removal and installation, door adjustments, glass replacement, and basic collision repair techniques.
        
     
    
    
        
            Depth Of Coverage:
        
        
            Comprehensive factory-level repair and diagnostic information, suitable for professional technicians and advanced DIY enthusiasts.
        
     
    
        
            Diagnostic Tools:
        
        
            Detailed use of Toyota's diagnostic tools (e.g., Techstream) and generic OBD-II scanners for fault code retrieval and data analysis.
        
     
    
        
            Torque Specifications:
        
        
            Precise torque values for all critical fasteners throughout the vehicle.
        
     
    
        
            Wiring Diagrams:
        
        
            Detailed electrical wiring schematics for all vehicle systems, aiding in troubleshooting electrical faults.
        
     
    
        
            Special Tools:
        
        
            Identification and usage of specialized tools required for specific repair procedures.
        
     
 
    
    
    
    
        
            Engine Type:
        
        
            3.0L V6 DOHC (Double Overhead Camshaft) 24-valve
        
     
    
    
        
            Horsepower:
        
        
            220 hp @ 5800 rpm (approximate, depending on specific market tuning)
        
     
    
        
            Torque:
        
        
            222 lb-ft @ 4400 rpm (approximate)
        
     
    
        
            Bore X Stroke:
        
        
            86.0 mm x 86.0 mm
        
     
    
    
    
        
            Fuel Delivery:
        
        
            Electronic Fuel Injection (EFI) with Sequential Port Injection.
        
     
    
        
            Fuel Type:
        
        
            Unleaded Gasoline (87 octane recommended)
        
     
    
    
        
            Coolant Capacity:
        
        
            Approximately 7.7 Quarts (7.3 Liters)
        
     
    
        
            Coolant Type:
        
        
            Toyota Super Long Life Coolant (SLLC) - Pink
        
     
    
    
        
            Oil Capacity:
        
        
            6.4 Quarts (6.1 Liters) with filter change
        
     
    
        
            Recommended Oil Viscosity:
        
        
            SAE 5W-30 (API Certified)
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 5,000 miles or 6 months, whichever comes first (using conventional oil). For synthetic oil, consult manual, typically extended to 10,000 miles/12 months.
        
     
    
        
            Air Filter Replacement:
        
        
            Every 30,000 miles or as needed based on inspection. The manual will detail inspection criteria.
        
     
    
        
            Cabin Air Filter Replacement:
        
        
            Every 15,000 miles or 12 months, or as needed.
        
     
    
        
            Spark Plug Replacement:
        
        
            Platinum-tipped spark plugs (e.g., Denso PK20TT) typically have a lifespan of 100,000 miles. Consult manual for specific part numbers and recommended intervals.
        
     
    
        
            Transmission Fluid Change:
        
        
            Every 60,000 miles is a common recommendation for severe driving conditions. Toyota often recommends 'lifetime' fluid, but regular changes are advisable for longevity. Refer to manual for specific recommendations.
        
     
    
        
            Coolant Replacement:
        
        
            First replacement at 100,000 miles, then every 50,000 miles thereafter (using Toyota SLLC).
        
     
    
    
        
            Engine Oil Spec:
        
        
            API SN, SM, SL, or equivalent; SAE 5W-30.
        
     
    
        
            Transmission Fluid Spec:
        
        
            Toyota ATF WS (World Standard).
        
     
    
        
            Brake Fluid Spec:
        
        
            DOT 3 or DOT 4.
        
     
    
        
            Power Steering Fluid Spec:
        
        
            Toyota Genuine Power Steering Fluid or equivalent DEXRON II/III ATF (check manual for exact specification).
        
     
    
    
        
            Common Wear Items:
        
        
            CV axles, brake wear, front suspension components (bushings, ball joints), exhaust system (rust).
        
     
    
        
            Engine Idling Issues:
        
        
            Occasional issues with throttle body or mass airflow sensor requiring cleaning or replacement.
        
     
    
        
            Transmission Shifting:
        
        
            While generally robust, occasional harsh shifting or delayed engagement can occur, often related to fluid condition or solenoid issues. The manual will detail diagnostic procedures.
        
     
    
        
            HVAC Blower Motor:
        
        
            Blower motor resistor failure can lead to non-functional fan speeds.
        
     
 
    
    
    
        
            Toyota Reputation:
        
        
            Toyota is renowned globally for its commitment to quality, durability, and reliability (QDR).
        
     
    
    
        
            First Generation Introduction:
        
        
            The first-generation Highlander (XU20) was introduced for the 2001 model year, built on the Camry platform.
        
     
    
        
            2004 Facelift:
        
        
            The 2004 model year received a mid-cycle refresh, improving styling, interior features, and powertrain refinement, setting the stage for the 2005 model.
        
     
    
        
            Powertrain Update For 2005:
        
        
            The 2005 model year saw the introduction of the more powerful 3.0L 1MZ-FE V6 engine and the new U151E 5-speed automatic transmission, a significant upgrade from the previous 4-speed automatic.
        
     
    
    
        
            Manufacturing Location:
        
        
            Highlander models for the North American market are primarily manufactured at Toyota Motor Manufacturing, Indiana (TMMI) in Princeton, Indiana.