Segment:
        
        
            Mid-size Crossover SUV
        
     
    
        
            Target Audience:
        
        
            Families seeking a versatile, reliable, and comfortable vehicle with available AWD capability.
        
     
    
    
        
            Key Competitors:
        
        
            Honda CR-V, Ford Edge, Chevrolet Equinox, Nissan Murano
        
     
    
    
        
            Vehicle Strengths:
        
        
            Renowned Toyota reliability, comfortable ride, spacious interior, optional third-row seating, available AWD, good fuel economy for its class.
        
     
    
        
            Manual Value Proposition:
        
        
            Provides comprehensive, factory-accurate repair data to maintain and repair the 2006 Highlander effectively, saving time and money compared to dealership service.
        
     
 
    
    
    
        
            Engine:
        
        
            3.3L V6 (3MZ-FE), 2.4L 4-Cyl (2AZ-FE) - Note: 2006 predominantly features the V6.
        
     
    
        
            Transmission:
        
        
            5-Speed Automatic (U151E)
        
     
    
        
            Drivetrain:
        
        
            Front-Wheel Drive (FWD), All-Wheel Drive (AWD)
        
     
    
        
            Brakes:
        
        
            Front Ventilated Discs, Rear Solid Discs, ABS, EBD, Brake Assist
        
     
    
        
            Suspension:
        
        
            Front MacPherson Struts, Rear Independent Multi-link
        
     
    
        
            Steering:
        
        
            Power-assisted Rack and Pinion
        
     
    
        
            Electrical:
        
        
            ECU, sensors, actuators, lighting, body control modules, charging system, starting system
        
     
    
        
            HVAC:
        
        
            Air conditioning, heating, ventilation systems
        
     
    
        
            Body:
        
        
            Exterior panels, doors, interior trim, glass, chassis
        
     
    
        
            Diagnostics:
        
        
            OBD-II diagnostics, DTC (Diagnostic Trouble Code) interpretation, system troubleshooting flowcharts
        
     
    
    
        
            Maintenance:
        
        
            Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection/replacement
        
     
    
        
            Repair:
        
        
            Engine mechanical repair, transmission overhaul, brake system repair, suspension component replacement, electrical component diagnosis and replacement
        
     
    
        
            Troubleshooting:
        
        
            Step-by-step diagnostic procedures for common and uncommon issues
        
     
    
        
            Component Replacement:
        
        
            Detailed instructions for removing and installing all major components
        
     
    
        
            Specifications:
        
        
            Torque specifications, clearances, fluid capacities, electrical schematics
        
     
    
    
        
            Depth:
        
        
            Full factory-level repair and diagnostic information, suitable for professional technicians and advanced DIYers
        
     
 
    
    
    
    
        
            Configuration:
        
        
            3.3L V6, 24-valve, DOHC, VVT-i
        
     
    
    
        
            Horsepower:
        
        
            215 hp @ 5600 rpm
        
     
    
        
            Torque:
        
        
            222 lb-ft @ 3600 rpm
        
     
    
    
        
            Induction:
        
        
            Electronic Fuel Injection (EFI)
        
     
    
        
            Fuel Type:
        
        
            Unleaded Regular (87 Octane recommended)
        
     
    
    
        
            Coolant Type:
        
        
            Toyota Super Long Life Coolant (SLLC) - Pink
        
     
    
    
        
            Oil Type:
        
        
            API Certified SAE 5W-30 Synthetic Blend or Full Synthetic
        
     
    
        
            Oil Capacity:
        
        
            4.5 US quarts (4.3 liters) with filter change
        
     
 
    
    
    
        
            Type:
        
        
            5-Speed Automatic Transmission
        
     
    
    
    
        
            Drive Type:
        
        
            All-Wheel Drive (AWD) optional on most trims
        
     
    
    
        
            Transmission Fluid Type:
        
        
            Toyota Genuine ATF WS (World Standard)
        
     
    
        
            Transmission Fluid Capacity:
        
        
            Approximately 4.0 US quarts (3.8 liters) for a drain and fill
        
     
 
    
    
    
        
            Length:
        
        
            188.4 inches (4785 mm)
        
     
    
        
            Width:
        
        
            72.2 inches (1835 mm)
        
     
    
        
            Height:
        
        
            67.9 inches (1725 mm)
        
     
    
        
            Wheelbase:
        
        
            106.7 inches (2710 mm)
        
     
    
    
        
            Curb Weight:
        
        
            3,930 - 4,180 lbs (1782 - 1896 kg) depending on configuration
        
     
    
    
        
            Cargo Volume Behind 3Rd Row:
        
        
            10.5 cu ft (297 liters)
        
     
    
        
            Cargo Volume Behind 2Nd Row:
        
        
            39.7 cu ft (1124 liters)
        
     
    
        
            Cargo Volume With All Seats Folded:
        
        
            78.9 cu ft (2234 liters)
        
     
 
    
    
    
        
            NHTSA Front Crash Test:
        
        
            5 Stars (Driver and Passenger)
        
     
    
        
            NHTSA Side Impact Crash Test:
        
        
            5 Stars (Front and Rear Passengers)
        
     
    
        
            IIHS Front Offset Crash Test:
        
        
            Good
        
     
    
        
            IIHS Side Impact Crash Test:
        
        
            Good
        
     
    
    
        
            ABS:
        
        
            Standard Anti-lock Braking System
        
     
    
        
            Ebd:
        
        
            Standard Electronic Brake-force Distribution
        
     
    
        
            Brake Assist:
        
        
            Standard Brake Assist (BA)
        
     
    
        
            Traction Control:
        
        
            Standard Traction Control (TRAC)
        
     
    
        
            Stability Control:
        
        
            Standard Vehicle Stability Control (VSC)
        
     
    
    
        
            Airbags:
        
        
            Front dual-stage airbags, front side-impact airbags, available side-curtain airbags (3-row models)
        
     
    
        
            Seatbelts:
        
        
            3-point front and rear seatbelts, pretensioners, force limiters
        
     
    
        
            Child Anchors:
        
        
            LATCH (Lower Anchors and Tethers for Children) system
        
     
 
    
    
    
        
            Audio System:
        
        
            Standard AM/FM/CD player with 6 speakers. Optional JBL premium audio system available on higher trims.
        
     
    
        
            Navigation:
        
        
            Optional factory-installed GPS navigation system.
        
     
    
    
        
            Cruise Control:
        
        
            Standard electronic cruise control.
        
     
    
    
        
            Auxiliary Input:
        
        
            Some models may feature an auxiliary audio input jack.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            5,000 miles (8,000 km) or 6 months, whichever comes first, under normal driving conditions. For severe conditions (frequent short trips, dusty roads, towing), shorten intervals.
        
     
    
        
            Engine Air Filter Replacement:
        
        
            Every 30,000 miles (48,000 km) or as needed based on inspection.
        
     
    
        
            Cabin Air Filter Replacement:
        
        
            Every 15,000 miles (24,000 km) or annually.
        
     
    
        
            Spark Plug Replacement:
        
        
            Iridium-tipped spark plugs typically last up to 100,000 miles (160,000 km). Consult manual for exact specifications and interval.
        
     
    
        
            Transmission Fluid Change:
        
        
            Recommended at 60,000 - 100,000 miles (96,000 - 160,000 km) for ATF WS, or more frequently under severe use. Consult specific service intervals in manual.
        
     
    
        
            Coolant Replacement:
        
        
            Toyota Super Long Life Coolant (SLLC) - First replacement at 100,000 miles (160,000 km), then every 50,000 miles (80,000 km) thereafter.
        
     
    
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 SAE J1703 or FMVSS No. 116
        
     
    
        
            Power Steering Fluid Type:
        
        
            Toyota Genuine Power Steering Fluid or equivalent (Dexron II/III compatible is often cited, but check manual for precise spec).
        
     
    
    
        
            Common Problems:
        
        
            Occasional reports of ABS actuator failure, mass airflow sensor issues, alternator failures, and minor interior rattles. The 3MZ-FE engine is generally robust.
        
     
    
        
            Maintenance Tips:
        
        
            Regularly check and replace the engine air filter and cabin air filter. Ensure coolant and transmission fluid are changed according to recommended intervals to prevent long-term issues.
        
     
 
    
    
    
        
            Brand Reputation:
        
        
            Toyota is globally recognized for its exceptional reliability, durability, and quality (often referred to as 'Toyota Quality').
        
     
    
    
        
            Generation Introduction:
        
        
            The second generation (XU20) Highlander was introduced for the 2001 model year, with significant updates and refinements leading into the 2006 model year. The 2006 model received a facelift and powertrain enhancements.
        
     
    
        
            Key Updates For 2006:
        
        
            Revised exterior styling (front and rear fascias, grille, headlights, taillights), upgraded interior materials and features, increased horsepower for the V6 engine, and introduction of standard VSC and TRAC across all models.
        
     
    
    
        
            Assembly Location:
        
        
            Toyota Motor Manufacturing, Kentucky, Inc. (Georgetown, Kentucky, USA)
        
     
    
        
            Production Period:
        
        
            2001-2007 (for the XU20 generation)