Introduction
This manual set provides essential information for the operation, maintenance, and safety of your 2021 Acura RDX. It is designed to help you understand your vehicle's features and ensure its proper care and longevity. Please read all documents thoroughly to familiarize yourself with your vehicle.

Figure 1: The complete 2021 Acura RDX Owner's Manual Set, featuring a protective case and various informational booklets.
Owner's Guide for Quick Reference
The Owner's Guide provides an overview of your vehicle's primary functions and controls. It is intended for quick consultation on common operations.
Instruments & Controls
Familiarize yourself with the dashboard layout, indicator lights, and control buttons. Refer to the detailed sections for specific functions.
- Dashboard Indicators: Understand the meaning of warning and indicator lights.
- Steering Wheel Controls: Operate audio, cruise control, and other integrated functions.
- Center Console: Access infotainment, climate control, and drive mode selectors.
Driving Information
This section covers essential driving procedures and tips for optimal performance and safety.
- Starting and Stopping the Engine: Proper procedures for ignition and shutdown.
- Transmission Operation: Understanding the automatic transmission modes.
- Parking Brake: Correct engagement and disengagement.
Driver & Passenger Safety
Safety is paramount. This section details features and practices to ensure the well-being of all occupants.
- Seat Belts: Proper use and adjustment for all seating positions.
- Airbag System: Location, function, and safety precautions related to airbags.
- Child Safety Seats: Guidelines for installation and use of child restraint systems.
- Advanced Driver-Assistance Systems (ADAS): Information on features like collision mitigation braking, lane keeping assist, and adaptive cruise control.
Maintenance Journal
The Maintenance Journal is crucial for tracking your vehicle's service history and adhering to recommended maintenance schedules. Regular maintenance ensures your RDX operates reliably and efficiently.
Recommended Service Procedures
- Oil Changes: Frequency and type of oil recommended.
- Tire Rotation: Schedule and importance for even wear.
- Fluid Levels: Checking and refilling engine oil, coolant, brake fluid, and washer fluid.
- Brake System Inspection: Regular checks for pad wear and fluid condition.
- Filter Replacement: Air filter, cabin filter, and fuel filter schedules.
Checking & Replacing Fuses
Locate the fuse boxes and understand how to inspect and replace blown fuses. Always use fuses of the correct amperage.
Tire Pressure and Fluid Levels
Maintaining correct tire pressure is vital for safety, fuel efficiency, and tire longevity. Regularly check all fluid levels as specified in the manual.
Specifications
This section provides technical details and capabilities of the 2021 Acura RDX.
| Category | Detail |
|---|---|
| Engine Type | 2.0L VTEC Turbo 4-Cylinder |
| Transmission | 10-Speed Automatic |
| Fuel Tank Capacity | 17.1 US gallons (approx.) |
| Tire Pressure (Recommended) | Refer to vehicle's tire placard |
| Weight | Approximately 1.2 pounds (for the manual set) |
Note: Vehicle specifications may vary by trim level and region. Always consult your vehicle's specific documentation for precise figures.
Warranty Information
The Warranty Information booklet outlines the terms and conditions of your vehicle's warranty coverage. It is important to understand what is covered and for how long.
- New Vehicle Limited Warranty: Coverage details for components and systems.
- Powertrain Limited Warranty: Specific coverage for engine, transmission, and drivetrain.
- Corrosion Limited Warranty: Protection against body panel rust-through.
- Roadside Assistance: Information on available services during the warranty period.
Retain this document with your vehicle records for future reference and potential claims.
Consumer Information
This booklet contains additional important information for consumers, including legal notices, environmental considerations, and other relevant disclosures.
- Emissions Control Warranty: Details on components related to emissions.
- Tire Warranty: Information provided by the tire manufacturer.
- Important Notices: Various legal and safety advisories.
Troubleshooting
This section provides guidance for common issues you might encounter with your 2021 Acura RDX. For complex problems, consult a certified Acura service technician.
Common Issues and Solutions
- Warning Lights: What to do when an indicator light illuminates.
- Engine Starting Problems: Checks for battery, fuel, and ignition.
- Tire-Related Issues: Low pressure, punctures, and spare tire usage.
- Electrical Malfunctions: Basic checks for fuses and connections.
Support
For further assistance, please refer to the contact information provided in your official Acura documentation or visit the official Acura website.
- Official Acura Website: www.acura.com
- Authorized Acura Dealership: Locate your nearest service center for professional support.





