Acura RDX: How to Change Power Steering Fluid
Changing the power steering fluid is important maintenance. Keep the power steering pump working properly by following these simple step-by-step instructions.
This article applies to the Acura RDX (2007-2012).
Power steering fluid is a neglected but necessary maintenance item that doesn't get much thought until something goes wrong. There is no reason to neglect the condition of your power steering fluid, which can cause issues or even the failure of your pump or rack, because flushing out your power steering fluid is easy. Removing the old fluid and replacing it with fresh is a simple task that mostly anyone can do with just a little time and basic tools. Keep reading and we'll walk you through the process.
Materials Needed
- Turkey baster or fluid transfer pump
- Length of 3/8" rubber hose
- Drain pan or bucket
- Rags or shop towels
- Power steering fluid (approximately 36 ounces)
- Jack and jack stands
- Flat head screwdriver
Step 1 – Drain the old power steering fluid
Pop the hood and remove the red cap from the power steering fluid reservoir. Use a turkey baster or fluid transfer pump to remove as much fluid from the reservoir as possible, placing the old fluid in a drain pan.
Place a rag or towel underneath the return line from the power steering fluid reservoir tank and loosen the clamp to remove the hose. Attach a length of hose to the return line and place it in your drain pan. Lift the front wheels, or put several sheets of cardboard under them to make turning the wheels easier. Start the car and turn the steering wheel from lock-to-lock until all the fluid is out and it stops dripping, then turn the car off. Avoid turning the wheel any more than needed after all the fluid is out to lessen the wear on the pump.
Figure 1. Typical Honda/Acura power steering reservoir. 
Figure 2. Typical Honda/Acura power steering line routing.
Step 2 – Fill the system with fresh fluid
Remove the length of hose and reattach the return line to the reservoir. Fill the reservoir with fresh power steering fluid until it reaches the top line. Start the car and run it until the fluid from the reservoir is sucked into the system, then top off the reservoir to the top line again. Turn the car back on and turn the wheel from lock-to-lock a few times. Repeat this process until you don't hear any noises coming from the pump and the fluid stays at the fill line. Once finished, replace the reservoir cap, lower the car, and take it for a test drive. Once you return, check your fluid level and verify that there aren't any leaks.
Pro Tip
Use only genuine Honda/Acura power steering fluid, or fluid that meets Honda/Acura standards, otherwise you may damage your pump or rack.
Featured Video: Acura RDX Power Steering Fluid Change
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