2003 Lexus LX470 Service & Repair Manual Software

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🏷️ Basic Information Identification Make: Lexus Model: LX470 Year: 2003 Codes Model Code: UZJ100 👋 Introduction Market Position Segment: Full-size Luxury SUV Description: The Lexus LX470 is a premium, body-on-frame SUV known for its robust construction, off-road capability, and luxurious amenities. It is based on the reliable Toyota Land Cruiser platform. Competitive Analysis Competitors: Cadillac Escalade, Lincoln Navigator, Mercedes-Benz ML-Class, BMW X5, Range Rover Key Features Defining Characteristics: Standard V8 engine, sophisticated AHC suspension, full-time 4WD, high-quality interior materials, legendary Toyota reliability and durability. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, HVAC, Electrical, Fuel, Exhaust, Body, Interior, Safety Systems, Diagnostics, Maintenance Page Count Estimated Pages: 2500+ Manual Type Type: Official Factory Service Manual (Software) Language Language: English Format Format: Software (likely PDF or proprietary viewer) 📖 Manual Coverage Systems Covered Engine Mechanical: 2UZ-FE V8 (4.7L) - Engine assembly, cylinder heads, block, pistons, crankshaft, camshafts, timing system, lubrication system, cooling system, engine management Engine Performance: Ignition system, fuel injection system (EFI), emissions control (EVAP, catalytic converter), turbocharger/supercharger (N/A for 2003 LX470), performance tuning Transmission Drivetrain: A750F 5-speed automatic transmission, transfer case, front differential, rear differential, axles, driveshafts, constant velocity (CV) joints Suspension Steering: Hydraulic Adjustable Height Control (AHC) system, independent front suspension (double wishbone), solid rear axle with trailing arms, Panhard rod, shock absorbers, springs, anti-roll bars, power steering system, steering column Brakes: Front vented discs, rear solid discs, Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA), parking brake Electrical Chassis: 12V battery system, charging system (alternator), starting system (starter motor), lighting system (headlights, taillights, interior lights), wipers, horns, power windows, power locks, mirrors, seats Electrical Powertrain: Engine Control Module (ECM), Transmission Control Module (TCM), sensor inputs/outputs, diagnostic trouble codes (DTCs) HVAC: Automatic climate control, A/C system, heating system, ventilation, cabin air filter replacement Body Exterior: Body panels, doors, hood, tailgate, bumpers, glass, mirrors, exterior trim, roof rack Body Interior: Dashboard, seats, upholstery, carpets, door panels, center console, trim components, airbags Procedures Included Maintenance Routine: Oil and filter changes, fluid level checks and top-offs, tire rotation and pressure checks, air filter replacement, cabin air filter replacement, spark plug replacement, brake pad inspection, battery terminal cleaning Troubleshooting: Diagnostic charts, symptom-based troubleshooting, wiring diagrams for electrical issues, specific component diagnosis Repair Component Level: Engine overhaul procedures, transmission removal and installation, suspension component replacement, brake caliper and rotor replacement, steering rack replacement, AHC system servicing, electrical component replacement (alternator, starter, sensors) Diagnostics: OBD-II diagnostics, ECM/TCM data stream interpretation, sensor testing, actuator testing, specific diagnostic procedures for AHC and ABS systems Calibration Adjustment: AHC system height calibration, wheel alignment procedures, diagnostic tool calibration requirements Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Detailed diagnostic procedures and schematics. Suitable for professional technicians and advanced DIYers. 📊 Manual Specifications File Format File Type: Software (likely .exe installer or self-contained application/PDF viewer) Print Quality Printability: Printable pages (if PDF or similar format) Binding Type Binding: N/A (Software) Paper Type Paper Type: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated V8 Engine Code: 2UZ-FE Displacement: 4.7 Liters (4664 cc) Bore X Stroke: 94.0 mm x 84.0 mm Compression Ratio: 9.6:1 Valve Train: DOHC, 32 Valves (4 valves per cylinder) Performance Horsepower: 235 hp @ 4800 rpm Torque: 315 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Fuel Tank Capacity: 25.0 Gallons (95 Liters) 🔧 Transmission Standard Transmission Type: 5-Speed Electronically Controlled Automatic Overdrive Transmission Model: A750F Features Drivetrain: Full-Time Four-Wheel Drive (4WD) with Torsen Limited-Slip Center Differential Transfer Case: 2-Speed with Locking Center Differential 📐 Dimensions Exterior Wheelbase: 112.2 inches (2850 mm) Overall Length: 194.5 inches (4940 mm) Overall Width: 76.4 inches (1940 mm) Overall Height: 70.5 inches (1790 mm) (without roof rack) Ground Clearance: 9.8 inches (249 mm) (normal setting) Interior Passenger Volume: 107.7 cubic feet (3050 Liters) Cargo Cargo Volume Behind 3Rd Row: 15.5 cubic feet (439 Liters) Cargo Volume Behind 2Nd Row: 40.0 cubic feet (1133 Liters) Weights Curb Weight: 4930 - 5015 lbs (2236 - 2275 kg) (depending on options) Gross Vehicle Weight Rating Gvwr: 6600 lbs (2994 kg) Towing Capacity: 6500 lbs (2950 kg) Wheels Tires Standard Wheel Size: 17 x 8.0 inches Standard Tire Size: P275/60R17 Bolt Pattern: 5 x 150 mm 🛡️ Safety Features Ratings NHTSA Rollover Resistance Score: 4 out of 5 stars Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Standard Traction Control System (TRAC) Stability Control: Standard Vehicle Stability Control (VSC) Ebc: Standard Electronic Brake-force Distribution (EBD) Brake Assist: Standard Brake Assist (BA) Passive Features Airbags Front: Driver and front passenger airbags Airbags Side: Optional front side-impact airbags, optional side curtain airbags (availability varies by package) Seatbelts: 3-point seatbelts for all seating positions, pretensioners and force...

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Description

🏷️ Basic Information

Identification

Make:

Lexus

Model:

LX470

Year:

Codes

Model Code:

UZJ100

👋 Introduction

Market Position

Segment:

Full-size Luxury SUV

Description:

The Lexus LX470 is a premium, body-on-frame SUV known for its robust construction, off-road capability, and luxurious amenities. It is based on the reliable Toyota Land Cruiser platform.

Competitive Analysis

Competitors:

Cadillac Escalade, Lincoln Navigator, Mercedes-Benz ML-Class, BMW X5, Range Rover

Key Features

Defining Characteristics:

Standard V8 engine, sophisticated AHC suspension, full-time 4WD, high-quality interior materials, legendary Toyota reliability and durability.

📋 Manual Details

Coverage Areas

Systems Covered:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, HVAC, Electrical, Fuel, Exhaust, Body, Interior, Safety Systems, Diagnostics, Maintenance

Page Count

Estimated Pages:

2500+

Manual Type

Type:

Official Factory Service Manual (Software)

Language

Language:

English

Format

Format:

Software (likely PDF or proprietary viewer)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

2UZ-FE V8 (4.7L) - Engine assembly, cylinder heads, block, pistons, crankshaft, camshafts, timing system, lubrication system, cooling system, engine management

Engine Performance:

Ignition system, fuel injection system (EFI), emissions control (EVAP, catalytic converter), turbocharger/supercharger (N/A for 2003 LX470), performance tuning

Transmission Drivetrain:

A750F 5-speed automatic transmission, transfer case, front differential, rear differential, axles, driveshafts, constant velocity (CV) joints

Suspension Steering:

Hydraulic Adjustable Height Control (AHC) system, independent front suspension (double wishbone), solid rear axle with trailing arms, Panhard rod, shock absorbers, springs, anti-roll bars, power steering system, steering column

Brakes:

Front vented discs, rear solid discs, Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA), parking brake

Electrical Chassis:

12V battery system, charging system (alternator), starting system (starter motor), lighting system (headlights, taillights, interior lights), wipers, horns, power windows, power locks, mirrors, seats

Electrical Powertrain:

Engine Control Module (ECM), Transmission Control Module (TCM), sensor inputs/outputs, diagnostic trouble codes (DTCs)

HVAC:

Automatic climate control, A/C system, heating system, ventilation, cabin air filter replacement

Body Exterior:

Body panels, doors, hood, tailgate, bumpers, glass, mirrors, exterior trim, roof rack

Body Interior:

Dashboard, seats, upholstery, carpets, door panels, center console, trim components, airbags

Procedures Included

Maintenance Routine:

Oil and filter changes, fluid level checks and top-offs, tire rotation and pressure checks, air filter replacement, cabin air filter replacement, spark plug replacement, brake pad inspection, battery terminal cleaning

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting, wiring diagrams for electrical issues, specific component diagnosis

Repair Component Level:

Engine overhaul procedures, transmission removal and installation, suspension component replacement, brake caliper and rotor replacement, steering rack replacement, AHC system servicing, electrical component replacement (alternator, starter, sensors)

Diagnostics:

OBD-II diagnostics, ECM/TCM data stream interpretation, sensor testing, actuator testing, specific diagnostic procedures for AHC and ABS systems

Calibration Adjustment:

AHC system height calibration, wheel alignment procedures, diagnostic tool calibration requirements

Technical Depth

Depth:

Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Detailed diagnostic procedures and schematics. Suitable for professional technicians and advanced DIYers.

📊 Manual Specifications

File Format

File Type:

Software (likely .exe installer or self-contained application/PDF viewer)

Print Quality

Printability:

Printable pages (if PDF or similar format)

Binding Type

Binding:

N/A (Software)

Paper Type

Paper Type:

N/A (Software)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Naturally Aspirated V8

Engine Code:

2UZ-FE

Displacement:

4.7 Liters (4664 cc)

Bore X Stroke:

94.0 mm x 84.0 mm

Compression Ratio:

9.6:1

Valve Train:

DOHC, 32 Valves (4 valves per cylinder)

Performance

Horsepower:

235 hp @ 4800 rpm

Torque:

315 lb-ft @ 3200 rpm

Fuel System

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Fuel Tank Capacity:

25.0 Gallons (95 Liters)

🔧 Transmission

Standard

Transmission Type:

5-Speed Electronically Controlled Automatic Overdrive

Transmission Model:

A750F

Features

Drivetrain:

Full-Time Four-Wheel Drive (4WD) with Torsen Limited-Slip Center Differential

Transfer Case:

2-Speed with Locking Center Differential

📐 Dimensions

Exterior

Wheelbase:

112.2 inches (2850 mm)

Overall Length:

194.5 inches (4940 mm)

Overall Width:

76.4 inches (1940 mm)

Overall Height:

70.5 inches (1790 mm) (without roof rack)

Ground Clearance:

9.8 inches (249 mm) (normal setting)

Interior

Passenger Volume:

107.7 cubic feet (3050 Liters)

Cargo

Cargo Volume Behind 3Rd Row:

15.5 cubic feet (439 Liters)

Cargo Volume Behind 2Nd Row:

40.0 cubic feet (1133 Liters)

Weights

Curb Weight:

4930 - 5015 lbs (2236 - 2275 kg) (depending on options)

Gross Vehicle Weight Rating Gvwr:

6600 lbs (2994 kg)

Towing Capacity:

6500 lbs (2950 kg)

Wheels Tires

Standard Wheel Size:

17 x 8.0 inches

Standard Tire Size:

P275/60R17

Bolt Pattern:

5 x 150 mm

🛡️ Safety Features

Ratings

NHTSA Rollover Resistance Score:

4 out of 5 stars

Active Features

Standard Anti-lock Braking System (ABS)

Traction Control:

Standard Traction Control System (TRAC)

Stability Control:

Standard Vehicle Stability Control (VSC)

Standard Electronic Brake-force Distribution (EBD)

Brake Assist:

Standard Brake Assist (BA)

Passive Features

Airbags Front:

Driver and front passenger airbags

Airbags Side:

Optional front side-impact airbags, optional side curtain airbags (availability varies by package)

Seatbelts:

3-point seatbelts for all seating positions, pretensioners and force limiters for front seats

Child Safety:

LATCH (Lower Anchors and Tether Anchors for Children) system, child safety rear door locks

💡 Technology Features

Infotainment

Audio System:

Premium JBL Synthesis audio system with AM/FM/CD changer, cassette player (optional), and 10-12 speakers. Touchscreen navigation system was optional.

Driver Assistance

Parking Sensors:

Rear parking assist sonar (optional).

Cruise Control:

Standard Adaptive Cruise Control (ACC) was available on some models.

Connectivity

Bluetooth:

Not typically integrated in factory systems for this model year. Aftermarket solutions are common.

Usb Ports:

Not available from factory. Aftermarket integration required.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Engine Air Filter:

Inspect every 15,000 miles (24,000 km), replace as needed. Replace every 30,000 miles (48,000 km) or as per manual recommendations.

Cabin Air Filter:

Replace every 15,000 miles (24,000 km) or annually.

Spark Plugs:

Replace every 100,000 miles (160,000 km) with OEM iridium-tipped plugs.

Transmission Fluid:

Inspect every 15,000 miles (24,000 km). Replace fluid and filter around 60,000 miles (96,000 km) or as per severe service schedule.

Coolant Replacement:

Replace every 30,000 miles (48,000 km) or 2 years.

Fluid Specifications

Engine Oil:

SAE 5W-30 API Service SG, SH, or SJ; ILSAC GF-2

Transmission Fluid:

Toyota ATF-WS (World Standard) or equivalent

Coolant:

Toyota Super Long Life Coolant (SLLC) or equivalent (50/50 mix with distilled water)

Power Steering Fluid:

Toyota Genuine Power Steering Fluid or equivalent Dexron III/Mercon ATF

Brake Fluid:

DOT 3 or DOT 4

Known Issues

Ahc Accumulator Failure:

The hydraulic accumulator in the AHC system can degrade over time, leading to a loss of ride height adjustment and potential leaks. Requires replacement of the accumulator and potentially other AHC components.

Rear Main Seal Leaks:

Some older 2UZ-FE engines may develop leaks from the rear main crankshaft seal. This is a labor-intensive repair requiring transmission removal.

ABS Actuator Failure:

The ABS actuator unit can sometimes fail, leading to ABS warning lights and loss of ABS functionality. Replacement is often required.

Ehaust Manifold Cracks:

Cracks in the exhaust manifolds can lead to exhaust leaks, ticking noises, and reduced performance. Replacement of the manifolds is the typical solution.

Timing Belt Replacement:

While the 2UZ-FE has a timing chain, it requires regular inspection. However, some earlier Toyota V8s (prior to this generation) used belts. For the 2UZ-FE, the timing chain is designed to last the life of the engine but may require tensioner/guide checks during major overhauls.

📚 Vehicle History

Brand Heritage

Lexus Founding:

Founded in 1989 by Toyota Motor Corporation with the goal of creating a luxury vehicle brand that would rival established European luxury marques.

Model Evolution

Lx Series Introduction:

The LX series debuted in 1996 as Lexus's first full-size luxury SUV, based on the venerable Toyota Land Cruiser (J80 series).

Lx470 Generation:

The second generation LX (J100 series) was introduced in 1998. The 2003 model year represents a significant facelift and powertrain update.

2003 Updates:

Key updates for 2003 included the introduction of the 5-speed automatic transmission (replacing the previous 4-speed), subtle exterior styling revisions, and interior enhancements. The engine remained the 4.7L V8.

Production

Manufacturing Location:

Japan (Tahara Plant, Aichi Prefecture)

🏆 Awards & Recognition

Recognitions

Reliability Reputation:

Consistently praised for its outstanding reliability and durability, often ranking highly in consumer satisfaction surveys from organizations like J.D. Power.

Off Road Capability:

Acknowledged for its exceptional off-road prowess, a direct benefit of its Land Cruiser underpinnings and AHC system.