Low Power Steering Fluid: Symptoms, Causes, Plus FAQ

Before power steering was introduced on production vehicles in the 1950s, drivers had to rely almost entirely on their muscles to turn the car’s front wheels back and forth. Fortunately, these days, all vehicles have power steering. The technology makes the steering wheel easier to turn by augmenting the force the driver exerts on the vehicle’s mechanical steering gear.

Most vehicles have either electric power steering (EPS) or hydraulic power steering. Hydraulic systems use pressurized fluid as the medium that acts on the steering gear to provide steering assistance.

Over time, leaks can develop in a hydraulic power steering system, leading to a low fluid level. When the fluid level becomes significantly low, you’ll likely notice one or more troublesome symptoms that you’ll want to address right away.

Signs of Low Power Steering Fluid

Do you think your car might be low on power steering fluid? If you notice one or more of the following symptoms, you might be right.

Low Level in the Reservoir

One of the most obvious signs of low power steering fluid is a low fluid level in the reservoir. You can easily check the fluid level yourself, as we’ll discuss later on.

Whining or Groaning Noise

If the power steering fluid level is significantly low, air will get sucked into the power steering pump, resulting in a whining or groaning noise that coincides with engine speed. You may also notice that the noise becomes louder when you turn the steering wheel back and forth.

Difficulty Turning the Steering Wheel

When air gets into the power steering system due to a low fluid level, you may notice that the steering wheel is more difficult to turn. Without a functional power steering system, you have to rely on your arm muscles to turn the car’s front wheels back and forth via the steering wheel.

How to Check Power Steering Fluid

If your car uses power steering fluid (those with electric power steering do not), it’s usually fairly easy to check the level and condition of the fluid. Although the steps for checking power steering fluid will vary by vehicle, generally, the process involves the following:

Note: Consult your owner’s manual to determine the exact procedure for checking the power steering fluid on your vehicle.

• Locate the power steering reservoir. Usually, the reservoir is mounted to (or located near) the power steering pump at the front of the engine.
• Make sure the engine is off.
• Note the power steering fluid level. On some reservoirs, you must remove the cap to access the fluid level dipstick. In other instances, the reservoir will have markings on the side to indicate the level.
• Add power steering fluid if the level is low. If the fluid is dark brown or has a burnt smell to it, you (or your mechanic) will want to perform a power steering fluid service.

You can watch these videos to get an idea on how to check your fluid levels:

Why is My Power Steering Fluid Low?

A low power steering fluid level indicates there’s a leak somewhere in the system. Common leak sources include:

• The power steering pump
• The steering gear
• The power steering lines
• The seals and o-rings within the system

How Long Should Power Steering Fluid Last?

Some vehicle manufactures recommend a periodic power steering fluid service while others do not. Regardless, it’s a good idea to replace your car’s power steering fluid occasionally.

Over time, the fluid can become contaminated, and its corrosion inhibitors can break down.
As a general rule of thumb, most experts recommend replacing power steering fluid every five years or 50,000 miles, whichever comes first.

Power Steering Fluid FAQ

Where to Get New Power Steering Fluid

Until you can top off your power steering fluid, you’re better off leaving your car in the garage. Because low levels of power steering fluid can damage your power steering system, you’re at greater risk of getting into an accident. Your power steering can suddenly fail, and you’re likely to lose control of your vehicle. For your own safety, it’s best to refill your power steering fluid as soon as possible. Luckily, getting power steering fluid is fast and easy with CarParts.com.

At CarParts.com, you’ll find a wide selection of high-quality power steering fluids, sourced from only the most trusted manufacturers in the industry. Not only is our website easy to navigate, our checkout is also convenient and secure. We’re 100% committed to giving you a worry-free shopping experience from start to finish. That’s why we also offer a 60-day returns policy, where you can return your order within 60 days of purchase just in case you aren’t completely satisfied with it.

Don’t wait until your power steering system completely fails before topping off your power steering fluid. Check out our catalog of high-quality power steering fluids at CarParts.com and shop today!