Lexus RX 1999-2003 Fuel System Specifications
Explore detailed fuel specifications for the 1999-2003 Lexus RX, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance, performance, and compliance.
Overview Specifications
This document provides detailed fuel specifications for the 1999-2003 Lexus RX models. It includes information on fuel types, efficiency, tank capacity, and related technical details. Use this guide to understand the fuel requirements and performance metrics of your vehicle. The document is organized into sections for easy navigation, with quick reference tables for key specifications.
How to Use
Use the search function to quickly locate specific fuel-related terms or specifications. Enter keywords like 'fuel type' or 'mileage' to find relevant sections.
Navigate through the document using the section titles and subsections. Each section is organized by topic, with detailed points listed under relevant subsections.
Key Specifications
Fuel Type
Unleaded (87+ octane)
Fuel Tank Capacity
17.2 gallons
City Mileage
18 MPG
Highway Mileage
24 MPG
Combined Mileage
20 MPG
Available Specifications
Fuel Type and Requirements
This section covers the recommended fuel types for the 1999-2003 Lexus RX models, including octane ratings and any special requirements for optimal performance.
Fuel Type and Requirements
This section covers the recommended fuel types for the 1999-2003 Lexus RX models, including octane ratings and any special requirements for optimal performance.
Recommended Fuel Type
- Use unleaded gasoline with an octane rating of 87 or higher.
- Premium fuel (91 octane or higher) is recommended for optimal performance.
- Avoid using diesel or ethanol blends above 10%.
- Using lower octane fuel may result in reduced engine performance.
Fuel Additives
- Lexus recommends against using fuel additives unless specified.
- Additives may affect emissions systems and engine performance.
- Use only Lexus-approved additives if necessary.
- Regular maintenance is preferred over additives for fuel system care.
Fuel Efficiency and Mileage
This section provides details on the fuel efficiency and mileage of the 1999-2003 Lexus RX models, including city, highway, and combined MPG ratings.
Fuel Efficiency and Mileage
This section provides details on the fuel efficiency and mileage of the 1999-2003 Lexus RX models, including city, highway, and combined MPG ratings.
City Mileage
- Average city mileage: 18 MPG.
- Mileage may vary based on driving conditions and habits.
- Stop-and-go traffic can reduce city mileage.
- Regular maintenance improves city mileage efficiency.
Highway Mileage
- Average highway mileage: 24 MPG.
- Consistent speeds improve highway mileage.
- Aerodynamics play a key role in highway efficiency.
- Proper tire inflation enhances highway MPG.
Combined Mileage
- Average combined mileage: 20 MPG.
- Combined mileage reflects a mix of city and highway driving.
- Eco-driving techniques can improve combined MPG.
- Regular tune-ups maintain optimal combined mileage.
Fuel Tank and Capacity
This section outlines the fuel tank specifications for the 1999-2003 Lexus RX models, including capacity, materials, and refueling tips.
Fuel Tank and Capacity
This section outlines the fuel tank specifications for the 1999-2003 Lexus RX models, including capacity, materials, and refueling tips.
Fuel Tank Capacity
- Fuel tank capacity: 17.2 gallons.
- Reserve fuel capacity: approximately 2 gallons.
- Fuel gauge accuracy may vary under certain conditions.
- Refuel before the tank is completely empty to avoid fuel pump damage.
Refueling Tips
- Always use the correct fuel grade for your vehicle.
- Avoid overfilling the tank to prevent spillage.
- Ensure the fuel cap is securely tightened after refueling.
- Check for fuel leaks during refueling.
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- Internal Combustion Engine
- Platform
- Front-engine, Front-wheel drive / All-wheel drive
- Material
- Petroleum-based
- Location
- Fuel tank located under rear seats
Dimensions
- Fuel Tank Capacity
- 17.2 gallons (65.1 liters)
- Fuel Line Diameter
- 0.375 inches (9.525 mm)
- Fuel Pump Pressure
- 44 psi (3.03 bar)
- Fuel Filter Size
- 2.5 inches x 2 inches (63.5 mm x 50.8 mm)
- Fuel injector Flow Rate
- 210 cc/min
- Fuel Rail Length
- 18.5 inches (470 mm)
- Fuel Tank Weight When Full
- 103.2 lbs (46.8 kg)
Materials
- Fuel Tank
- High-density polyethylene
- Fuel Lines
- Nitrile rubber with steel braiding
- Fuel Pump
- Stainless steel and plastic composite
- Fuel injectors
- Aluminum alloy with stainless steel nozzles
Features
- Fuel Delivery
-
- Sequential multi-port fuel injection
- Electronic fuel pressure regulation
- Returnless fuel system
- Fuel Efficiency
-
- Optimized combustion chamber design
- Variable valve timing
- Electronic throttle control
- Emissions Control
-
- Catalytic converter
- Evaporative emissions system
- Oxygen sensors
- Safety
-
- Fuel cut-off inertia switch
- Rollover valve in fuel tank
- Fuel tank impact protection
- Monitoring
-
- On-board diagnostics (OBD-II)
- Fuel level sensor
- Fuel pressure sensor
Safety Features
- Fuel Tank
-
- Impact-resistant construction
- Flame arrestor in filler neck
- Pressure relief valve
- Fuel Lines
-
- Fire-resistant materials
- Leak detection system
- Emergency Features
-
- Automatic fuel pump shutoff in crash
- Manual fuel pump cutoff switch
Comfort Features
- Refueling
-
- Easy-access fuel filler door
- Capless fuel filler system
- Fuel level indicator with low fuel warning
- Driving
-
- Smooth fuel delivery
- Quiet fuel pump operation
- Stable fuel pressure
- Maintenance
-
- Easy-access fuel filter
- Serviceable fuel injectors
- Diagnostic port for fuel system
Accessories
- Fuel Additives
-
- Fuel system cleaner
- Octane booster
- Fuel stabilizer
- Fuel Caps
-
- Locking fuel cap
- Vented fuel cap
- Replacement OEM fuel cap
- Fuel Tools
-
- Fuel pressure tester
- Fuel line disconnect tool
- Fuel injector cleaner kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Replace fuel filter
- Inspect fuel lines for leaks
- Clean fuel injectors
- Check fuel pump pressure
- Inspect fuel tank for damage
- Maintenance Notes
- Use only unleaded gasoline with octane rating of 87 or higher
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Fuel pump and fuel injectors
- Powertrain
- Miles: 70,000Years: 6Coverage: Fuel delivery system components
- Emissions
- Miles: 80,000Years: 8Coverage: Fuel system emissions components
- Corrosion
- Miles: UnlimitedYears: 6Coverage: Fuel tank corrosion perforation
Production Details
- Manufacturer
- Toyota Motor Corporation
- Manufacturing Process
-
- Injection molding for fuel tank
- Precision machining for fuel injectors
- Automated assembly for fuel pump
- Quality Control
- Pressure Testing: All fuel system componentsLeak Testing: Fuel tank and linesPerformance Testing: Fuel injectors and pump
- Sustainability Practices
-
- Recycled materials in fuel tank
- Low-emission manufacturing
- Waste reduction in production
- Production Metrics
- Annual Production: 150,000 unitsDefect Rate: 0.01%Energy Efficiency: 95%
Service Information for fuel Service
Maintenance and service requirements specific to the fuel system
- Inspect fuel lines and connections
- Replace fuel filter
- Check fuel pump operation
- Test fuel pressure
- Inspect fuel tank for damage
Use only OEM or equivalent replacement parts
- Clean fuel injectors
- Inspect fuel rail for leaks
- Check fuel level sensor accuracy
- Test evaporative emissions system
- Inspect fuel filler neck and cap
Perform fuel system cleaning if necessary
- Replace fuel pump if necessary
- Inspect and replace fuel lines if needed
- Check fuel pressure regulator
- Test fuel injector flow rates
- Inspect and clean fuel tank
Consider replacing all fuel system components if significant wear is detected
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 1999-2003 Lexus RX?
What type of fuel is recommended for the 1999-2003 Lexus RX?
The 1999-2003 Lexus RX models are designed to run on premium unleaded gasoline with an octane rating of 91 or higher. Using lower-octane fuel may result in reduced performance and fuel efficiency. Always refer to the owner's manual for specific fuel recommendations and avoid using fuels with additives that are not approved by Lexus.
Q2 What is the recommended maintenance schedule for the fuel system?
What is the recommended maintenance schedule for the fuel system?
The fuel system for the 1999-2003 Lexus RX requires regular maintenance to ensure optimal performance. Replace the fuel filter every 30,000 miles and inspect the fuel injectors and fuel pump during routine service. Additionally, use fuel system cleaners every 15,000 miles to prevent carbon buildup. Always follow the maintenance schedule outlined in the owner's manual.
Q3 How do I replace the fuel filter on a 1999-2003 Lexus RX?
How do I replace the fuel filter on a 1999-2003 Lexus RX?
To replace the fuel filter, first, relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, typically under the vehicle near the fuel tank. Disconnect the fuel lines and mounting bolts, then install the new filter, ensuring proper alignment. Reconnect the fuel lines and test for leaks before restarting the engine.
Q4 What should I do if my Lexus RX is experiencing poor fuel economy?
What should I do if my Lexus RX is experiencing poor fuel economy?
Poor fuel economy in the 1999-2003 Lexus RX can result from several issues, including clogged fuel injectors, a dirty air filter, or improper tire pressure. Start by checking and replacing the air filter, ensuring tires are inflated to the recommended pressure, and using a fuel system cleaner. If issues persist, inspect the oxygen sensors and fuel injectors for proper operation.
Q5 How can I optimize the fuel efficiency of my 1999-2003 Lexus RX?
How can I optimize the fuel efficiency of my 1999-2003 Lexus RX?
To optimize fuel efficiency, maintain proper tire pressure, use premium unleaded fuel, and avoid aggressive driving. Regularly replace the air filter and spark plugs, and ensure the fuel system is clean. Additionally, reduce vehicle weight by removing unnecessary items and use cruise control on highways to maintain a consistent speed.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1999-2003 Lexus RX Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the 1999-2003 Lexus RX models.
Technical Service Bulletin: Fuel System Updates
Coming SoonDetails updates and fixes related to the fuel system for the 1999-2003 Lexus RX, including common issues and solutions.
Lexus RX Parts and Accessories Catalog
Coming SoonCatalog listing genuine parts and accessories for the 1999-2003 Lexus RX, including fuel system components.
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Technical Information
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