🏷️ Basic Information

Make:

Toyota

Model:

Highlander

Year:

2006

Generation Code:

XU20 (Second Generation)

Chassis Code:

ACU20/25

👋 Introduction

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.

📋 Manual Details

Coverage Scope:

Comprehensive vehicle service, repair, and diagnostics

Estimated Page Count:

1500+

Type:

Official Factory Service Manual / Repair Manual Software

Language:

English

Format:

PDF Download

📖 Manual Coverage

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

📊 Manual Specifications

File Quality:

High-resolution, searchable PDF, printable pages

Print Capability:

Printable, allowing for easy reference in a workshop environment

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

3MZ-FE

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

🔧 Transmission

Type:

5-Speed Automatic Transmission

Transmission Code:

U151E

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

📐 Dimensions

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)

🛡️ Safety Features

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

💡 Technology Features

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.

🔧 Maintenance

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.

📚 Vehicle History

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)

🏆 Awards & Recognition

Type:

Edmunds.com Best Family Cars (often cited for Highlander models of this era)

Type 2:

Kelley Blue Book (KBB) 'Best Resale Value' awards for Toyota brand generally, contributing to Highlander's strong residual value.

Safety Awards:

Consistent 5-star NHTSA ratings and 'Good' IIHS ratings underscore its safety credentials.