2021 Acura Rdx
Vehicle Specs & Maintenance Data
The 2021 Acura Rdx maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Acura Rdx.
For oil changes, the 2021 Acura Rdx takes 0W-20 Full Synthetic motor oil with a capacity of 3.7 quarts. Brake fluid type is DOT 3, the recommended coolant is Blue Type 2 Coolant (OAT), and transmission fluid is ATF DW-1. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Acura Rdx, torque the lug nuts to 80 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Acura Rdx have reported 5 common issues including "Fuel Pump Failure (Recall)", "High-Pitched Brake Squeal at Low Speed" and "Infotainment Touchpad Glitches and Freezing". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Acura Rdx uses 0W-20 Full Synthetic motor oil (3.7 qt capacity), requires lug nuts torqued to 80 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2021 Acura Rdx. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Acura Rdx.
Common problems reported by 2021 Acura Rdx owners, with recommended fixes and estimated repair costs.
Fuel Pump Failure (Recall)
The low-pressure fuel pump inside the fuel tank may fail, causing the engine to stall without warning while driving. This recall affects 2020-2022 Acura RDX models as part of a broad Honda/Acura recall campaign covering millions of vehicles.
Honda issued recall 23V-858 to replace the fuel pump module free of charge. Contact your Acura dealer with your VIN to verify eligibility and schedule the repair.
Est. Cost: Covered under recallHigh-Pitched Brake Squeal at Low Speed
A high-pitched squeal is heard from the front and/or rear brakes when lightly applied at speeds below 15 mph, such as during parking lot maneuvers or approaching a stop. The noise typically disappears once the brakes warm up after several applications.
Acura issued a TSB addressing brake noise on third-generation RDX models. The fix involves replacing the brake pads with an updated compound that reduces cold-weather squealing. In some cases, the rotors may need resurfacing to remove glazing.
Est. Cost: $200 - $600 per axleInfotainment Touchpad Glitches and Freezing
The True Touchpad interface infotainment system may become unresponsive, freeze during use, or register incorrect inputs. The system can take a long time to boot after starting the vehicle, and Apple CarPlay or Android Auto connections may drop frequently.
Acura released software updates to improve touchpad responsiveness and system stability. Visit the dealer for the latest infotainment firmware. Acura also offered an extended warranty on certain infotainment components. A hard reset (hold power button for 10 seconds) provides temporary relief.
Est. Cost: $0 for software update; $500 - $1,500 for unit replacementParking Sensor False Alerts in Rain
The front parking sensors embedded in the honeycomb grille pattern may produce false beeping alerts when driving slowly in rain, through puddles, or in car washes. Water droplets on the sensors trigger false proximity readings that annoy the driver.
There is no permanent fix from Acura at this time. Some owners disable the parking sensors temporarily via the dashboard button during rain. Keeping the sensor faces clean and free of debris can reduce false triggers. Aftermarket hydrophobic coatings on the sensor faces may help.
Est. Cost: $0 (work-around by disabling sensors)Check Engine Light with DTC P0087 (Fuel Rail Pressure Low)
The check engine light illuminates with DTC P0087 indicating fuel rail pressure is too low. The vehicle may experience reduced power, hesitation, or rough running. The issue can be related to the high-pressure fuel pump, fuel pressure regulator, or fuel filter.
Acura issued a TSB to diagnose and address fuel pressure concerns. The dealer will inspect the high-pressure fuel pump and fuel system components. The high-pressure fuel pump or its regulator may need replacement.
Est. Cost: $300 - $1,200