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Power Steering Assist Fault Service Required (Meaning, Causes & Fixes)

Understanding the Steering Assist Fault Service RequiredWhen the “Steering Assist Fault Service Required” message appears, it suggests that there is a malfunction or fault in the vehicle’s steering system that requires attention from a qualified service technician. This warning is crucial as it signifies a potential compromise in the vehicle’s steering performance and stability. Ignoring this warning could lead to unsafe driving conditions and compromise the overall handling of the vehicle.


The Ford F-150 and MustangFor the Ford F-150 and Mustang models, encountering a “Steering Assist Fault Service Required” message can be attributed to several factors. One common cause is a faulty steering angle sensor or torque sensor. These sensors play a crucial role in determining the driver’s intended steering inputs and translating them into appropriate assistance from the power steering system. In some cases, software glitches or electrical issues may also trigger this warning.
The Ford Escape and RangerIn the Ford Escape and Ranger models, the “Steering Assist Fault Service Required” message may indicate an issue with the electronic power-assisted steering (EPAS) system. Common causes include a faulty power steering control module, a damaged wiring harness, or a malfunctioning torque sensor. These components are vital for accurate and responsive steering assistance, and any fault in them can trigger a warning message.
The Lincoln MKZ and FusionOwners of the Lincoln MKZ and Fusion may also come across the “Steering Assist Fault Service Required” message. Similar to other models, this warning can be a result of issues with the EPAS system. Faulty sensors, damaged wiring, or software glitches can all contribute to the appearance of this warning. It is crucial to address this promptly to maintain optimal steering performance and ensure safe driving.
Resolving the Steering Assist Fault Service RequiredIf you encounter the “Steering Assist Fault Service Required” message in your Ford vehicle, it is recommended to follow these steps:“Safety First: Reduce your speed and exercise caution while driving. A compromised steering system requires extra care to maintain control over the vehicle.“Restart the Vehicle: In some cases, a temporary glitch in the system may trigger the warning message. Try turning off the engine, waiting for a few minutes, and then restarting the vehicle to see if the warning disappears.“Check Power Steering Fluid: Ensure that the power steering fluid level is within the recommended range. Low fluid levels can affect the steering system’s performance and trigger warning messages. If the fluid is low, top it up as per the manufacturer’s instructions.“Seek Professional Assistance:”If the warning message persists or reappears, it is essential to have the vehicle inspected by a qualified service technician. They will use diagnostic tools and expertise to identify the specific cause of the issue and perform the necessary repairs.

Steps to Address Power Steering Assist Fault

It is important to address the “Power Steering Assist Fault” message promptly. Continuing to drive with a faulty power steering system can lead to difficulties in steering the vehicle, especially at lower speeds or when parking. Reduced steering assistance can make the vehicle more challenging to control, increasing the risk of accidents.

When encountering the “Power Steering Assist Fault” message, it is recommended to take the following steps:

  1. 1) Ensure Safety: Reduce your speed and exercise caution while driving. It may be more challenging to maneuver the vehicle without the assistance of the power steering system.
  2. 2) Check Power Steering Fluid: Verify the power steering fluid level and top it up if necessary. Low fluid levels can contribute to power steering issues.
  3. 3) Restart the Vehicle: In some cases, a temporary glitch in the power steering system may trigger the fault message. Turning off the engine, waiting for a few minutes, and then restarting the vehicle might resolve the issue temporarily. However, it is still important to have the vehicle inspected by a professional.
  4. 4) Seek Professional Assistance: It is advisable to have the vehicle examined by a qualified service technician. They have the expertise and diagnostic tools to identify the specific cause of the power steering fault and perform the necessary repairs or replacements.
Power Steering Assist Fault Service required (Meaning, Causes & Fixes)

What does the Power Steering Assist Fault Message mean?

The Power Steering Assist Fault message typically indicates a problem with the power steering system in a vehicle. Power steering is a system that helps drivers steer their vehicles more easily by applying additional force to the steering mechanism. The power steering assist uses hydraulic or electric systems to provide this additional assistance.


  • Power Steering Pump Failure: The power steering pump is responsible for generating hydraulic pressure to assist with steering. If the pump fails or malfunctions, it can lead to a power steering assist fault.
  • Electrical Issues: In vehicles with electric power steering systems, electrical problems can occur. This can be due to a faulty control module, sensor, or wiring issue, disrupting the power supply to the power steering system and triggering the fault message.
  • Steering Angle Sensor Failure: The steering angle sensor determines the position of the steering wheel and helps the power steering system provide the appropriate assistance. If the sensor malfunctions or becomes damaged, it can lead to the power steering assist fault message.
  • Faulty Power Steering Control Module: The power steering control module is responsible for controlling various aspects of the power steering system. If the module experiences a failure or glitch, it can trigger the fault message.
  • Low Power Steering Fluid: Insufficient power steering fluid levels can affect the operation of the power steering system. If the fluid level is low, it can result in reduced power steering assist and trigger the fault message.

What should I do if I encounter the Power Steering Assist Fault message?

  1. Ensure Safety: Reduce your speed and exercise caution while driving. It may be more challenging to maneuver the vehicle without the assistance of the power steering system.
  2. Check Power Steering Fluid: Verify the power steering fluid level and top it up if necessary. Low fluid levels can contribute to power steering issues.
  3. Restart the Vehicle: In some cases, a temporary glitch in the power steering system may trigger the fault message. Turning off the engine, waiting for a few minutes, and then restarting the vehicle might resolve the issue temporarily. However, it is still important to have the vehicle inspected by a professional.
  4. Seek Professional Assistance: It is advisable to have the vehicle examined by a qualified service technician. They have the expertise and diagnostic tools to identify the specific cause of the power steering fault and perform the necessary repairs or replacements.

What are the common causes of a Power Steering Assist Fault?

  1. Power Steering Pump Failure: The power steering pump is responsible for generating hydraulic pressure to assist with steering. Over time, the pump can wear out, develop leaks, or experience internal failures, leading to a power steering assist fault. Insufficient pressure or loss of hydraulic fluid can hinder the power steering system’s proper functioning.
  2. Electrical Problems: Vehicles equipped with electric power steering systems rely on electrical components such as control modules, sensors, and wiring. Electrical issues, such as a malfunctioning control module or a faulty sensor, can disrupt the power supply to the power steering system, triggering the fault message.
  3. Steering Angle Sensor Malfunction: The steering angle sensor detects the position of the steering wheel and provides crucial information to the power steering system. If the sensor malfunctions or becomes damaged, it can result in inaccurate readings or a complete failure to detect steering inputs, leading to a power steering assist fault.
  4. Faulty Power Steering Control Module: The power steering control module is responsible for regulating and controlling the power steering system. A malfunctioning or damaged control module can send incorrect signals or fail to communicate properly with other components, causing a power steering assist fault.
  5. Low Power Steering Fluid: The power steering system relies on an adequate amount of fluid to function smoothly. If the power steering fluid level is low due to leaks or neglecting regular maintenance, it can affect the system’s performance and trigger the fault message. Insufficient fluid can result in reduced power steering assistance and increased effort required to steer the vehicle.
  6. Faulty Power Steering Belt or Pulley: In vehicles with belt-driven power steering systems, a damaged or worn-out power steering belt or pulley can cause issues. If the belt slips or breaks, it can disrupt the power transfer from the engine to the power steering pump, leading to a power steering assist fault.
  7. Mechanical Component Failures: Various mechanical components within the power steering system, such as valves, hoses, or seals, can experience wear and tear over time. If these components fail or become damaged, they can affect the system’s performance and trigger the fault message.
  8. Software or Firmware Glitches: Some modern vehicles have complex electronic systems that control the power steering functionality. Software or firmware glitches within the vehicle’s computer system can cause temporary faults in the power steering system, leading to the fault message. In such cases, a software update or reprogramming may be required to resolve the issue.

What are the steps to fix a Power Steering Assist Fault?

  1. Check Power Steering Fluid: Start by checking the power steering fluid level. If it is low, top it up with the manufacturer-recommended fluid. Be sure to use the correct type of fluid specified in the owner’s manual.
  2. Inspect for Leaks: Inspect the power steering system for any signs of leaks, such as wet spots or puddles under the vehicle. If a leak is detected, locate the source and repair it accordingly. Common areas of leaks include hoses, connections, and the power steering pump.
  3. Inspect Power Steering Belt and Pulley: If your vehicle has a belt-driven power steering system, check the condition of the power steering belt and pulley. Look for signs of wear, cracks, or looseness. Replace the belt if necessary, and ensure the pulley is properly aligned and functioning.
  4. Reset Fault Codes: In some cases, a power steering assist fault may be triggered by a temporary software glitch. To reset the fault codes, disconnect the battery for a few minutes and then reconnect it. This action can clear any stored error codes and restore normal operation. However, keep in mind that this is a temporary solution, and if the fault message reappears, further investigation is needed.
  5. Perform Electrical System Checks: If the fault is related to electrical issues, inspect the power steering control module, sensors, and wiring connections. Ensure all connections are secure, and check for any damaged or frayed wires. If necessary, replace faulty components or repair damaged wiring.
  6. Diagnose Steering Angle Sensor: If the steering angle sensor is suspected to be the cause of the fault, it may require recalibration or replacement. A professional mechanic with specialized diagnostic equipment can diagnose and address any issues with the sensor.
  7. Inspect Power Steering Pump: If the power steering pump is suspected to be the culprit, it may need to be replaced. A worn-out or faulty pump can result in a power steering assist fault. A qualified mechanic can inspect the pump and determine if it needs repair or replacement.
  8. Software Updates: If the fault is attributed to software or firmware glitches, the vehicle manufacturer may have released updates to address such issues. Visit an authorized dealership or service center to inquire about any available software updates or reprogramming that can resolve the fault.

How much does it cost to fix a Power Steering Assist Fault?

The cost to fix a power steering assist fault can vary depending on several factors, including the cause of the fault, the extent of the repairs needed, and the location and labor rates of the service provider. Here are some cost considerations to keep in mind:

  1. Diagnostic Fee: If you take your vehicle to a professional mechanic or dealership, they may charge a diagnostic fee to identify the specific cause of the power steering assist fault. Diagnostic fees can range from $50 to $150 or more, depending on the location and the complexity of the issue.
  2. Parts: The cost of parts will depend on what needs to be replaced or repaired. Common components that may require replacement include power steering pumps, hoses, belts, sensors, and control modules. The prices of these parts can vary significantly based on the make and model of your vehicle, as well as whether you choose original equipment manufacturer (OEM) parts or aftermarket alternatives. On average, you can expect to spend anywhere from $100 to $500 or more on parts, depending on the specific repairs needed.
  3. Labor: The labor cost can vary depending on the hourly rate charged by the service provider and the complexity of the repair. Labor rates typically range from $50 to $150 per hour, but they can be higher at dealerships or specialized repair shops. The amount of time required to fix a power steering assist fault will depend on the specific repairs needed. It could range from a couple of hours for minor repairs to several hours or more for complex issues.
  4. Additional Costs: In some cases, additional costs may be involved, such as fluid flushes, alignment adjustments, or software updates. These costs will depend on the specific requirements of your vehicle and the recommendations of the service provider.

Overall, the total cost to fix a power steering assist fault can range from a few hundred dollars to over a thousand dollars, depending on the factors mentioned above. It’s important to consult with a professional mechanic or dealership to get an accurate estimate for your specific situation. Additionally, if your vehicle is under warranty, some or all of the repair costs may be covered, depending on the warranty terms and conditions.


Conclusion

The “Steering Assist Fault Service Required” message is a critical warning that should not be ignored. Whether you own an F-150, Mustang, Escape, Ranger, Lincoln MKZ, or Fusion, encountering this message indicates a potential issue with the vehicle’s steering system. Promptly addressing this warning by seeking professional assistance ensures your safety and helps maintain the optimal performance of the steering system. Remember, a properly functioning steering system is vital for safe and enjoyable driving experiences.


Frequently Asked Question

What does steering fault service mean?

The “steering fault service” message typically indicates an issue with the power steering system of a vehicle. It means that there is a fault or malfunction in the power steering system that requires attention and service. The power steering system helps to assist the driver in steering the vehicle by applying additional force to the steering mechanism. When a fault is detected, it is important to have the vehicle inspected and repaired to ensure proper functioning of the power steering system.


How to fix power-assisted steering?

Fixing power-assisted steering depends on the specific cause of the problem. Here are a few general steps to troubleshoot and fix power-assisted steering issues:

  1. Check the power steering fluid level: Insufficient power steering fluid can cause steering problems. Make sure the fluid level is adequate and top it up if necessary.
  2. Inspect the power steering belt: A worn or loose power steering belt can result in power steering failure. Examine the belt for signs of damage or slackness, and replace it if needed.
  3. Check for leaks: Leaking power steering fluid can indicate a problem with hoses, connections, or the power steering pump. Inspect the system for any visible leaks and repair or replace the affected components.
  4. Scan for error codes: Modern vehicles are equipped with onboard diagnostic systems that can detect power steering faults. Use a diagnostic scanner to retrieve error codes and pinpoint the specific issue.
  5. Consult a professional: If the above steps don’t resolve the problem, it’s advisable to seek assistance from a qualified mechanic or dealership. They can perform further diagnostics and recommend the appropriate repairs.

Remember, power assisted steering issues can vary, and the specific repair process may differ based on the make, model, and year of your vehicle. It’s best to consult the vehicle’s manual or seek professional guidance for accurate troubleshooting and repairs.


Can you still drive with a power steering assist fault?

While it is possible to drive a vehicle with a power steering assist fault, it is not recommended. When the power steering assist fails, steering the vehicle can become significantly more difficult, especially at lower speeds and when making tight turns. The absence of power assistance can place added strain on the driver, potentially leading to fatigue and reduced control of the vehicle. It’s important to address power steering assist faults promptly to ensure safe and comfortable driving. If you experience a power steering assist fault, it is advisable to have the vehicle inspected and repaired as soon as possible.


How much does it cost to fix a power steering assist fault?

The cost of fixing a power steering assist fault can vary depending on several factors, including the specific issue, the make and model of the vehicle, and the labor rates of the service provider. Generally, the cost can range from a few hundred dollars to over a thousand dollars. Diagnostic fees, parts, and labor are the primary cost components. It’s best to consult with a professional mechanic or dealership to get an accurate estimate for your specific situation.


What does steering assist fault service required mean?

The message “steering assist fault service required” typically indicates a problem or malfunction in the vehicle’s power steering system. It means that the power steering system has detected a fault and requires attention and service. When this message appears, it is important to have the vehicle inspected and repaired by a qualified mechanic or dealership to ensure the safe operation of the power steering system.


How to reset the power steering assist fault?

Resetting a power steering assist fault may vary depending on the make and model of the vehicle. In some cases, simply turning off the engine and restarting the vehicle can reset the fault and clear the message. However, it’s important to note that resetting the fault will not fix the underlying issue causing the fault. It is recommended to have the vehicle inspected and repaired to address the root cause of the power steering assist fault. If you’re unsure about the reset procedure for your specific vehicle, consult the owner’s manual or contact a professional mechanic or dealership for guidance.

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