Power Steering Went Out Then Came Back: A Complete Guide to Diagnose and Fix It

Power Steering Went Out Then Came Back: A Complete Guide explains why power steering can fail intermittently and how to find lasting solutions. Intermittent power steering is often due to fluid leaks, low fluid levels, faulty electric motors, or pump issues that temporarily disrupt assist before recovering. You will understand the differences between hydraulic and electric systems, how to spot warning signs early, and practical steps to troubleshoot and fix the problem safely.

This guide is for drivers experiencing power steering cutouts who want clear, step-by-step advice about immediate safety, common causes, maintenance tips, and when professional help is necessary. Knowing these details helps you avoid costly repairs and keeps your steering responsive and reliable.

Why Does Power Steering Go Out Then Come Back On?

Power steering going out and then coming back on usually points to an intermittent electrical or fluid pressure issue. In hydraulic systems, the steering pump depends on maintaining enough fluid pressure to assist your turns. Fluid levels dropping due to leaks or air trapped in the system can cause pressure to fluctuate. This causes loss of assist that feels like the steering wheel suddenly getting heavy, then easing up again when pressure builds back. Low fluid often comes from cracks or damage in hoses or seals, meaning a slow leak that may not be obvious at first.

Another hydraulic cause is a worn steering pump or a slipping or broken belt that drives the pump. A pump struggling to maintain pressure can cause the assist to cut in and out, especially under load when you turn the wheel. This results in a whine or groan noise along with the changing steering feel. Repair costs for these issues vary but replacing a pump or belt can range from $200 to $600 depending on your vehicle and labor rates.

Electric power steering systems fail differently because they rely on an electric motor and sensors instead of fluid pressure. Electrical problems like a failing motor, sensor glitches, or bad connectors can cause assist to drop out randomly. When the system loses electrical supply or the control module detects a fault, the steering can suddenly become very stiff. Then, once the connection resets or the module recalibrates, the assist might come back on. Often, a steering warning light or message shows on the dashboard to indicate an electronic power steering fault.

The feel when power steering fails intermittently is typically a sharp change in steering effort. You might notice the wheel suddenly stiffening during a turn or while driving straight, followed by the assist returning after a few seconds or as you move the wheel. This sudden change can be dangerous because it affects your control without much warning, so slowing down and safely pulling over is recommended if it happens while driving.

In vehicles with hydraulic systems, checking the fluid level when parked is a good first step. Low fluid levels might be temporarily fixed by topping off, but the assist will decline as the leak worsens. Air trapped in the system requires bleeding the steering lines to remove. Electrical problems often involve scanning for fault codes and testing components during diagnostics. Since electric power steering systems involve sensors, modules, and wiring, identifying the exact cause can be more complex.

Addressing intermittent power steering failure quickly prevents further damage and maintains safe steering. Leaks in hydraulic lines or worn pumps demand repair or replacement. Electrical faults require thorough testing with specialized tools. Costs depend on the cause but expect several hundred dollars for pump or motor repairs. Consistent steering performance means maintaining the fluid system for hydraulics or monitoring electronic warnings for equipped vehicles.

How Hydraulic and Electric Power Steering Systems Differ

Hydraulic and electric power steering systems work differently and experience distinct types of failures. Hydraulic systems use fluid pressure to assist steering, while electric systems rely on an electric motor and sensors. Each system’s failure pattern, causes, and repair needs vary significantly.

Hydraulic Power Steering Components and Functions

Hydraulic power steering depends on a power steering pump driven by the engine’s belt to circulate fluid under pressure. This fluid moves through hoses and the steering rack to reduce steering effort. Key components include the pump, reservoir, high-pressure and return hoses, and the steering rack. The fluid acts as hydraulic muscle, helping the wheels turn with less force from the driver.

The pump pushes the fluid through the system, supplying pressure to the steering rack and pinion setup. The hoses must withstand pressure and temperature changes, carrying fluid to and from the pump and steering gear. Fluid is critical for lubrication and smooth operation, so leaks or low fluid levels can quickly cause failure symptoms like heavy steering or noise. Regular fluid maintenance helps maintain system function.

Electric Power Steering Components and Functions

Electric power steering (EPS) replaces the hydraulic pump and fluid with an electric motor, sensors, and a control module. The system detects the driver’s steering input and assists by applying torque via the motor. It eliminates the need for hydraulic fluid, hoses, and a belt-driven pump. This reduces maintenance needs associated with fluid leaks and belt wear.

Electric steering motors vary by vehicle and may be located on the steering column or directly on the steering rack. Sensors monitor steering angle and speed to provide responsive assistance. The control unit manages power delivery, adapting to driving conditions. EPS systems require electrical wiring and components that can fail, causing intermittent or complete loss of power assist.

Common Failures for Each System Type

Hydraulic systems usually fail due to fluid leaks from worn hoses, damaged seals, or a failing reservoir. A worn or damaged pump can lose pressure, and low or contaminated fluid can lead to noisy or stiff steering. The steering rack itself can be damaged if leaks or pump issues persist, driving up repair costs. Problems often cause intermittent power assist loss as fluid pressure fluctuates.

Electric power steering failures involve electrical faults such as wiring issues, sensor malfunctions, or motor wear. Faulty control units can cause the assistance to cut out and return intermittently. Unlike hydraulic leaks, these electrical issues often trigger warning lights and error codes. EPS repairs focus on diagnosing and replacing the electric motor, sensors, or wiring instead of fluid system parts.

Check for fluid leaks first if your steering assistance goes out then comes back; hydraulic leaks often cause pressure drops that create intermittent failures.

Repair Implications for Hydraulic vs Electric Systems

Replacing a hydraulic power steering pump can cost between $668 and $941, with hoses ranging from $100 to $800 depending on pressure ratings. Repairing or replacing the steering rack runs from $710 to over $2,400. Fluid flushes cost around $170 to $205 at shops, or $10 to $50 for DIY. Leak repairs often involve draining old fluid and installing new hoses or seals, which can become labor-intensive and costly if delayed.

Electric steering motor repairs typically cost between $300 and $800, including parts and labor. Electrical diagnostics are required to pinpoint wiring or sensor faults. Replacing an electric motor tends to be less expensive than hydraulic pump or rack replacement but might involve recalibration or programming. Some vehicles have hybrid systems combining hydraulic and electric components, complicating diagnostics and repair.

Driving with intermittent power steering issues, especially in hydraulic systems, risks damaging the pump and rack, escalating costs. Electric system failures can sometimes reset after a power cycle, but recurring faults usually mean an underlying electrical problem. Proper diagnosis distinguishes whether fluid, mechanical, or electrical problems cause the steering loss, guiding repair choices effectively.

Immediate Safety and Troubleshooting Steps When Power Steering Cuts Out

Your top priority is safety when your power steering cuts out while driving. Slow down gradually, pull over when possible, and inspect the system carefully. Temporary fixes might help you reach a repair shop, but driving without power steering requires extra caution.

Pull over Safely and Stay Calm

Loss of power steering can make your vehicle harder to control. Avoid sudden turns or sharp maneuvers to prevent accidents. Use your turn signals and activate hazard lights if you need to slow down or stop on the road.

Look for a safe spot to pull over, such as a wide shoulder or a parking lot. Don’t try to fight the steering if you’re in heavy traffic, gradually ease your way off. Keeping calm helps you maintain control during this stressful event.

Check Fluid Levels and Look for Leaks

For cars with hydraulic power steering, low fluid often causes intermittent failure. Locate the power steering fluid reservoir under the hood following your owner’s manual or the label on the reservoir. Check the fluid level using the dipstick or marks on the reservoir.

Inspect the fluid’s color and smell: fresh power steering fluid typically looks bright red and has a faint odor. Dark, dirty, or burnt-smelling fluid suggests contamination or age. Also, look under the car for reddish-brown oily puddles, staining, or wet spots, which indicate leaks.

1. Open the hood and locate the power steering fluid reservoir.
2. Wipe the dipstick clean, then reinsert and remove it to check the fluid level.
3. Compare the fluid level to the max/min markings on the reservoir.
4. Observe the fluid color and smell for signs of contamination.
5. Look around hoses and connections for dampness or leaks.
6. Check underneath the front of your car for any fluid spots on the ground.

Finding low fluid means topping it up might restore assist temporarily, but potential leaks or contamination need attention. Electric power steering systems don’t have a fluid reservoir; instead, watch for warning lights or diagnostic messages.

Attempt a Power Steering System Reset

Some vehicles allow you to reset the power steering system after a fault, which can resolve temporary issues especially with electric power steering (EPS). Reset options vary by make and model but often involve turning the ignition on and off or disconnecting the battery briefly.

1. Turn your ignition to the “On” position without starting the engine.
2. Wait 10 to 20 seconds, then turn the ignition off.
3. Start the engine and turn the steering wheel fully left and right a few times slowly.
4. Your manual may recommend disconnecting the negative battery terminal for 10 to 15 minutes to perform an electronic reset.
5. Verify if the power steering warning light has gone off and if steering assist returns.

Not all resets will fix the underlying problem. A warning light that stays on or ongoing symptoms means you should schedule a professional inspection immediately.

Drive Carefully or Call for Help

Driving without power steering requires more physical effort and increases steering stiffness, especially at low speeds and during tight turns. Keep your speed low, avoid sudden steering inputs, and use wider turns.

Seeing the power steering warning light near home lets you cautiously continue driving, but monitor your vehicle closely. Pull over and stop driving as soon as you feel unsafe. Being far from home or noticing worsening symptoms calls for calling roadside assistance or arranging a tow to a nearby mechanic.

Do not ignore warning lights or intermittent power steering problems. Driving under compromised steering conditions increases accident risk and can damage your vehicle’s steering components further. Professional diagnostics and repairs cost between $150 to $500 typically but are essential to your safety.

How to Identify and Check Common Power Steering Problems at Home

To identify common power steering problems at home, start by checking the fluid level and condition, inspecting belts and hoses, looking for leaks, and listening for unusual noises. These simple steps help catch issues early before they cause intermittent failure or complete loss of power steering assist. Performing these checks safely and systematically can save costly repairs.

Checking Power Steering Fluid Level and Quality

Locate the power steering fluid reservoir under the hood if your vehicle has a hydraulic system. Check the fluid level when the engine is cold or just after it has warmed up, refer to the markings on the reservoir or dipstick. Avoid opening the reservoir cap on a hot engine to prevent burns.

The condition of the fluid also matters. Healthy power steering fluid is clear red or amber in color. Air contamination is indicated when the fluid appears foamy or milky, usually resulting from a failing hose or loose fitting. Dark brown or black fluid suggests overheating or debris inside, requiring a flush and replacement. Here is a quick checklist to assess fluid condition:

• Clear red/amber: Normal, no action needed.
• Low and dropping: Indicates leak; find and repair ASAP to avoid pump damage.
• Foamy/milky: Air in system; check hoses and fittings for damage or looseness.
• Dark brown/black: Fluid degraded; flush system and replace fluid.
• Unusual smell: Burning fluid signals overheating or pump strain.

Regularly monitoring the fluid level and quality helps prevent pump wear or failure and the resulting intermittent power steering loss.

Inspecting Power Steering Belts and Pulleys

A slipping or worn belt can cause power steering assist to fail intermittently. This is common if the belt is cracked, glazed, or loose. Check for belt tension by pressing down on it, there should be about half an inch of give. Also, inspect for fraying, cracks, or shiny patches that indicate slipping.

Listen carefully at startup and when turning the wheel; a high-pitched squealing noise that changes with steering often points to the power steering pump belt. Finding a belt problem means replacement usually costs between $20 and $50 for the part and may take 30 minutes to an hour based on your vehicle.

Looking for Fluid Leaks and Hose Damage

Leaks are a common cause of power steering fluid loss and associated system failures. Check under your vehicle for puddles or wet spots that have a reddish or amber tint. Also, inspect hoses and connections around the pump, reservoir, and steering rack.

Look for cracked, brittle, or swollen hoses, which indicate wear and imminent failure. Leaks from loose or damaged fittings should be tightened or replaced promptly. Early detection prevents running the pump dry, which can cause permanent damage.

A safety tip: use a clean rag to wipe suspect areas clean, then watch for fresh fluid after running the engine and turning the wheel. This will help you pinpoint the source before replacing parts.

Listening for Warning Noises Around Steering Components

Unusual sounds often alert you to power steering problems before total failure occurs. Whining or squealing noises during steering efforts can indicate low fluid, pump wear, or belt slipping. Notice if the noise changes when turning the wheel; a pump issue is likely if it does.

Also, vibration or rough feeling when steering at low speeds may warn of a failing pump or belt issues. Pay attention to squeals on startup especially if they vanish or transform when steering; this pattern often involves the power steering pump rather than just the belt.

Early recognition of these sounds allows you to check fluid and belts promptly, avoiding more expensive repairs. Persistent noises with normal fluid and belt conditions suggest a professional diagnostic is needed to test the pump or electronic components.

Common Causes Behind Intermittent Power Steering Failure

Intermittent power steering failure often stems from a few key mechanical, fluid-related, electrical, or sensor issues. One of the most common fluid-related problems is a power steering fluid leak. These leaks usually happen when the rubber hoses and seals in the hydraulic system wear out or crack. When you notice red or brown puddles under your car, it’s a strong sign there might be a leak. Fluid loss can drop below 25% of what’s needed, which typically causes the power steering to struggle, especially at low speeds like when parking or turning in tight spots. A low groaning noise often accompanies this issue, indicating the fluid replacement is overdue.

Mechanical causes can involve worn or damaged components like the power steering pump. The pump might fail to maintain proper pressure intermittently, resulting in brief episodes of lost assist. This is more visible at low speeds or during cold weather because the fluid thickens and pumps have to work harder to pressurize the system. Cold temperatures also cause rubber parts to stiffen, making leaks more likely and fluid flow less efficient.

In electric power steering systems, which don’t use fluid, problems arise mainly from electrical and sensor faults. Sensors that monitor steering angle, motor torque, or wheel speed send data to the control unit to provide the right amount of assist. Loose or corroded electrical connectors can cut power to the assist motor or give false signals. Such failures cause the system to shut down intermittently. Control modules themselves can also have glitches or software issues, causing temporary loss of assist and then recovery once the system resets or the connection re-establishes.

Low-speed steering failures are noted more often because power steering requires the greatest assist when maneuvering at slow speeds or from a stop. A failing pump or fluid issue impacts this phase more noticeably. Electric systems struggle if the battery voltage drops or sensors send incorrect data. Cold weather compounds this by increasing electrical resistance and slowing down mechanical parts, making it harder for the steering assist to activate smoothly.

To detect fluid leaks, inspect the power steering reservoir and the area underneath your vehicle regularly. Use a clean white cloth to check for oily, reddish, or brown stains on the ground. A pressure test at a mechanic shop can locate hard-to-find leaks in the system. For sensors and connectors, carefully check wiring harnesses near the steering column for damage or loose pins. Professional diagnostic tools can read sensor outputs and alert you to electrical faults that affect power steering performance.

Repeated power steering failures at low speed or during cold starts suggest leaking fluid or electrical connector issues, address these quickly to avoid heavier steering and unsafe driving conditions.

Maintenance Practices to Prevent Power Steering Problems

To keep your power steering system working smoothly and avoid sudden failures, regular maintenance is essential. One of the most important tasks is checking and replacing the power steering fluid. For hydraulic systems, manufacturers usually recommend flushing and replacing the fluid every 30,000 to 60,000 miles. Fresh fluid maintains the proper pressure and lubricates the pump and other components, preventing wear and tear. You can check the fluid level by running the engine for a few minutes to warm it up, then measuring the fluid on the dipstick or reservoir markings. When the fluid looks discolored, like pale gray or brownish, or you find reddish or brown puddles under the car, these are signs of contaminated or leaking fluid that need immediate attention.

Belt inspection also helps prevent power steering problems. The drive belt powers the steering pump, so worn or slipping belts can cause intermittent loss of steering assistance. Inspect your belts visually every 15,000 miles or during oil changes. Look for cracks, glazing, or looseness, and replace them if they show signs of wear. Properly tensioned belts keep the pump running efficiently and reduce strain on the steering system.

Occasional flushing of the entire power steering system clears out old fluid, debris, and air that may have entered the lines. System flushing can cost between $80 and $150 at a repair shop, depending on your vehicle. This procedure extends the life of the pump and steering components. It typically involves draining the old fluid, cleaning the reservoir and lines, and refilling with new fluid that meets your car manufacturer’s specifications.

Seasonal care can affect your power steering’s health, especially in colder climates. Low temperatures can thicken the power steering fluid, making it harder for the pump to circulate it and causing stiffer steering in winter. Before cold weather hits, check your fluid and belt condition, and consider a fluid change if it’s nearing the replacement mileage. In hot climates, heat can degrade fluid quality faster, so stay on top of the recommended maintenance intervals.

Following your vehicle’s maintenance schedule is important for power steering reliability. Notice any whining noises, steering difficulties, or fluid leaks? Have a professional technician check it as soon as possible. Certified mechanics have the tools and knowledge to diagnose issues that might not be obvious during a quick inspection and can prevent more costly repairs by addressing problems early. Keeping up with fluid changes, belt inspections, system flushes, and seasonal checks reduces the chance of your power steering going out unexpectedly and ensures safer, smoother driving.

Typical Repair Costs and When to Call a Professional Mechanic

Typical repairs to fix power steering issues vary significantly in cost depending on the exact component at fault. Small problems like leaks in the power steering fluid system can be inexpensive to fix, usually costing between $100 and $250 to replace fluid and repair hoses. More serious repairs, such as replacing the power steering pump or steering rack, can range from $300 to $1,000 or more depending on the make and model of your vehicle and labor rates in your area.

Ignoring power steering problems can increase the risk of permanent damage. For example, continuing to drive with low or no fluid can cause the power steering pump to overheat and fail, leading to costly replacement. Early warning signs like whining noises from the pump or difficulty steering should prompt an inspection to avoid further damage. The decision on when to call a professional mechanic should be guided by these criteria:

• Any persistent or recurring loss of power steering assistance
• Visible fluid leaks under the vehicle
• Unusual noises such as whining, squealing, or moaning while steering
• Increased steering effort or inconsistent steering feel

Below is a table outlining some common power steering repairs, their likely causes, and expected price ranges. These figures reflect typical costs without extra work or parts replacement and may vary by location and vehicle type.

Having your power steering inspected by a professional should happen as soon as symptoms appear. The mechanic will check the pump pulley, fluid levels, and hoses first, then diagnose more complex issues if needed. Early diagnosis reduces labor costs and prevents damage that leads to more expensive repairs. If you notice inconsistent steering or hear abnormal sounds when turning, schedule an inspection immediately to maintain safe vehicle control.

Power Steering Recalls and Vehicle Brand Specific Issues

Some brands face model-specific power steering issues beyond recalls. For example, certain Toyota and Honda models have been reported to experience intermittent power steering loss due to faults in wiring harnesses or sensors triggering the power steering warning light. In Ford vehicles using hydraulic systems, leaks in the power steering pump or hoses are common causes of assist loss. Identifying these brand-specific tendencies can guide your diagnostics when power steering fails then returns, especially if your vehicle is outside recall or warranty coverage. To handle any recall or suspected defect, first use your vehicle identification number (VIN) to check for active recalls online. If your vehicle qualifies, schedule a service appointment with an authorized dealer promptly. The dealer will inspect and, if necessary, replace the power steering components at no cost. Ask the auto shop exactly which parts they will address, how long the repair will take (usually a few hours), and whether you need alternative transportation during the service. For models with no recall, regular inspection of fluid levels, belts, and electrical connections remains essential to preventing intermittent failures. Always address a power steering warning light immediately, delaying can worsen the issue and lead to costly repairs beyond free recall fixes.

Step-by-Step Action Plan for Intermittent Power Steering Failure

Follow these steps to address power steering that cuts out and then returns, ensuring your safety and proper vehicle function.

1. Before driving: Check the power steering fluid level if your vehicle uses hydraulic steering. Top it off only if it’s low, and look for any fluid leaks under your car.
2. During your next drive: Pay close attention to when the power steering fails. Note if it happens during turns, after starting the engine, or at certain temperatures to help pinpoint the issue.
3. Day 1: Inspect the serpentine belt condition and tension for hydraulic systems. A worn or slipping belt can cause intermittent failures. Replace or tighten if needed and test steering response.
4. Day 2: For electric power steering, check your dashboard for warning lights related to the steering system. Clear any error codes with a diagnostic tool or have a mechanic scan for you.
5. Within the first week: Clean battery terminals and ensure a solid electrical connection. Weak battery power or poor connections can intermittently affect electric power steering.
6. Week 2: Test drive in safe conditions after maintenance. Confirm the steering remains consistent without sudden resistance or loss of assist.
7. After 2 weeks: If problems persist or you notice unusual noises, vibrations, or warning lights, schedule a professional inspection to prevent further damage or risk.

Frequently Asked Questions

Why Did My Power Steering Go Out and Then Come Back?

Your power steering might fail then return due to intermittent electrical or fluid pressure issues. These fluctuations can temporarily disrupt the system but may resolve briefly before the problem recurs, indicating a need for inspection.

How to Reset Power Steering Sensor?

Resetting the power steering sensor typically requires a professional scan tool to clear error codes; some cars might reset after turning the ignition off and on. Always consult your vehicle’s manual or a mechanic to avoid causing further issues.

Is a Car Still Drivable If the Power Steering Goes Out?

Yes, but steering becomes much harder, especially at low speeds, making it challenging and unsafe. Reduce speed and pull over safely as soon as possible to avoid accidents and damage.

What Is the Most Common Cause of Power Steering Failure?

The most frequent cause is fluid leaks in hydraulic systems or electrical issues like sensor failure in electric power steering. Both problems disrupt the power assist and require prompt repair to restore normal function.

Can a Dead Battery Affect Electric Power Steering?

Yes, a dead battery can cut power to the electronic steering system, causing it to fail temporarily until the battery is charged or replaced.

What Should I Do If the Power Steering Warning Light Comes On?

Pull over safely and get your car checked by a qualified mechanic as soon as possible, as this light indicates system malfunction that could lead to steering failure.

The Bottom Line

Your power steering cutting out then coming back signals an issue that needs prompt attention to stay safe on the road. Taking simple diagnostic steps like checking fluid levels, belts, and electrical connections can catch common problems early. Prioritize a professional check if symptoms continue or worsen, ensuring reliable steering performance every time you drive.