Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2004MUSTANG BASE, 2D COUPE, 3.9 6, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2396 (STEERING SYSTEM - HYDRAULIC POWER ASSIST STEERING (HPAS))GENERAL PROCEDURESPOWER STEERING SYSTEM FLUSHINGMATERIAL SPECIFICATIONS
2004 Ford Mustang Base, 2D Coupe, 3.9 6, Automatic
Material Specifications
2004 Ford Mustang Base, 2D Coupe, 3.9 6, AutomaticSECTION Material Specifications
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
MATERIAL SPECIFICATIONS TABLE
| Item | Specification |
|---|---|
| MERCON® V Automatic Transmission Fluid XT-5-QM (or XT-5-QMC) (US); CXT-5-LM12 (Canada) |
MERCON® V |
NOTE:
Do not mix fluid types. Any mixture or any unapproved fluid may lead to seal deterioration and leaks. A leak may ultimately cause loss of fluid, which may result in a loss of power steering assist.
- Remove the power steering fluid reservoir cap.
- Using a suitable suction device, remove the power steering fluid from the reservoir.
- Release the clamp and disconnect the return hose from the reservoir.
- Remove the clamp from the hose and allow the remaining fluid to drain out of the reservoir.
- Plug the power steering fluid reservoir inlet port.
- Attach an extension hose to the return hose.
- Place the open end of the extension hose into a suitable container.
- If equipped with Hydro-Boost®, apply the brake pedal 4 times.
- Fill the reservoir as needed with the specified fluid.
- Start the engine while simultaneously turning the steering wheel to lock and then immediately turn the ignition switch to the OFF position.
NOTE:
Do not reuse the power steering fluid that has been flushed from the power steering system.
NOTE:
Do not overfill the reservoir.
NOTE:
Do not allow the power steering pump to run completely dry of power steering fluid. Damage to the power steering pump may occur.
NOTE:
Avoid turning the steering wheel without the engine running as this may cause air to be pulled into the steering gear.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.