Yes. The Acura TSX uses automatic transmission fluid (ATF) as its power steering fluid, not engine oil. The exact ATF specification depends on the model year, with older TSX models commonly using Dexron II/III and newer models often aligning with Honda ATF DW-1. Always confirm with the owner's manual or the reservoir cap for the precise specification.
Overview of the TSX power steering system
The TSX employs a hydraulic power steering system that relies on ATF to lubricate and operate the steering gear. Using the correct ATF is crucial for smooth steering, quiet operation, and long-term seal integrity. Incorrect fluid can cause stiffness, noise, leaks, or accelerated wear.
Fluid specification by model year
These guidelines reflect common practice across the TSX’s production span. Always verify for your exact vehicle, as dealer service notes or recalls can influence recommended fluids.
- 2004–2008 Acura TSX: Power steering uses automatic transmission fluid (ATF). Many owners and service guides reference Dexron II/III ATF as a typical specification, though some vehicles may have been serviced with Honda DW-1 in later years or by dealers.
- 2009–2014 Acura TSX: Honda ATF DW-1 is commonly recommended by dealers for this generation, though checking the reservoir cap or owner's manual is advised to confirm the exact spec for your car.
Having the correct ATF specification is essential; using the wrong fluid can lead to erratic steering feel or potential damage to the power steering components.
How to check and top up the power steering fluid
Maintaining the proper fluid level and using the correct type helps prevent steering problems and leaks. The steps below outline a safe, general approach; always defer to the manual for your vehicle’s exact procedure.
- Warm up the engine and turn the steering wheel from lock to lock a few times, then park and set the parking brake.
- Open the hood and locate the power steering fluid reservoir; remove the cap and clean the area to avoid contaminating the fluid.
- Check the fluid level against the marks on the reservoir (MIN and MAX). If low, top up with the recommended ATF type until it sits between MIN and MAX.
- Inspect the fluid’s color and odor. New ATF is typically red; dark, burnt-smelling fluid indicates replacement or a system issue.
- With the engine running, gently turn the wheel from side to side to circulate the fluid, then recheck the level and top up if necessary after a short drive. Look for leaks around the reservoir and hoses.
If you repeatedly find a low level, there may be a leak in the power steering hoses, rack, or seals. Have the system inspected by a qualified technician.
Common issues and maintenance reminders
Always use the specified ATF; mixing fluids can degrade seals and performance. Do not operate the vehicle with low PS fluid for extended periods, and address any whining, stiffness, or foaming promptly to prevent further damage.
Frequently asked questions
Is power steering fluid the same as engine oil in the TSX? No. They are separate systems; power steering fluid is ATF, not engine oil. How often should PS fluid be replaced? Follow the maintenance schedule in the owner’s manual or replace if the fluid appears dark or contaminated or if there are signs of a leak or steering trouble.
Summary: The Acura TSX uses ATF as its power steering fluid, with the exact specification depending on the model year (Dexron II/III for older models; Honda DW-1 for newer models). Always verify the correct fluid type from the owner's manual or reservoir cap, and maintain proper fluid levels to ensure smooth, safe steering.