If your 2010 Ford Fusion suddenly displays a “Service Power Steering Now” message or the steering wheel becomes stiff, you’re not alone. This guide breaks down how to diagnose and fix the electric power steering (EPS) issues step-by-step. Whether you’re a DIY enthusiast or just want to understand what’s going on before heading to a mechanic, this post covers it all.
Understanding Electric Power Steering (EPS) in the 2010 Ford Fusion
Unlike older vehicles with hydraulic systems, the 2010 Ford Fusion uses an electric motor to provide steering assistance. This system is controlled by the Power Steering Control Module (PSCM), which relies on various sensors and electrical inputs to operate properly.
When something goes wrong—like low voltage, corroded cables, or a failed sensor—the PSCM may disable steering assist entirely, often without warning. That’s why understanding the basics can help you take the right first steps to diagnose the problem.
Common Symptoms of EPS Failure
- “Service Power Steering Now” warning on the dash
- No power assist—steering becomes very stiff
- Power steering works intermittently
- Steering wheel vibrates or pulls
Any of these signs indicate your EPS system has detected a fault. Let’s explore how to fix it.
1. Perform a Quick Reset (Clearing Fault Codes)
To fix 2010 Ford Fusion electric power steering issues, start by clearing any stored error codes in the Power Steering Control Module (PSCM). This is often the fastest fix if the issue is temporary.
How to Reset:
- Use an OBD-II scanner capable of reading Ford PSCM codes.
- Turn the ignition to ON (engine off), connect the scanner, and read EPS codes.
- Clear the codes and restart the car to see if steering assist is restored.
Note: If the warning reappears after clearing, it likely points to a persistent issue that needs further investigation.
2. Check the Battery and Voltage Supply
EPS systems are voltage-sensitive. If your battery is weak or there’s poor ground, the PSCM may shut off the power steering to protect itself.
Steps to Inspect:
- Check battery voltage (should be at least 12.4V with the car off, 13.8-14.5V running).
- Clean any corrosion from battery terminals.
- Inspect battery cables for wear or damage. Replace if needed.
Some Fusion owners fixed their EPS by simply replacing a worn-out battery or corroded ground cable. It’s a simple step with big impact.
3. Inspect and Replace Fuses
Blown or corroded fuses can cause power loss to the steering module. Check the following:
Important Fuses:
| Fuse Number | Amperage | Function |
|---|---|---|
| F1 | 50A | EPS Motor Power |
| F2 | 50A | Main EPS Control |
Pull these fuses and inspect for burn marks or corrosion. Replace with identical rating if damaged.
4. Check Steering Angle and Torque Sensors
These sensors provide crucial input to the EPS system. If they fail or misreport data, the PSCM can shut down the motor.
Diagnostic Tips:
- Use a scanner to check live data from the steering angle sensor.
- If values are erratic or zero, replace the sensor.
- Recalibrate the sensor after replacement using a scan tool.
Steering angle sensor faults are more common than people think and often go overlooked.
5. Inspect the Power Steering Control Module (PSCM)
The PSCM is the “brain” of your electric steering system. It can fail internally or lose connection to other modules.
Signs of a Failing PSCM:
- EPS error won’t clear with scanner
- No communication with EPS module
- Loss of power assist even after fuse and battery checks
If you suspect PSCM failure, you’ll need a replacement and reprogramming via Ford IDS software—typically a job for a qualified technician or dealer.
6. Replace the Steering Rack (Only If Necessary)
If the above steps don’t resolve the issue, the electric steering rack itself might be faulty. This is a last-resort fix, as it’s expensive and labor-intensive.
Signs the Rack Needs Replacement:
- Clicking or grinding noises during steering
- Persistent EPS warnings despite sensor and PSCM replacement
- Visible damage to motor housing
After replacing the rack, you must reprogram the PSCM to match the new hardware.
7. Recall and Warranty Considerations
Ford issued recalls for some 2011-2012 Fusion models with steering assist problems, but the 2010 model year was not officially included. Still, many owners reported free or discounted repairs under extended warranty or after appealing to Ford directly.
Steps You Can Take:
- Contact a Ford dealership to ask if your VIN qualifies for goodwill repair.
- File a complaint with the NHTSA if denied—multiple complaints help trigger broader action.
DIY vs. Professional Repair: What to Consider
If you’re mechanically inclined and have access to an OBD-II scanner, you can tackle most of these fixes yourself. However, software-related repairs (like PSCM programming) usually require dealership-grade tools.
Estimated Costs:
- Battery and cables: $100–$200
- Fuses or sensors: $20–$150
- PSCM replacement: $600–$1,000 with labor
- Complete steering rack: $1,200–$2,000
Tips to Prevent EPS Issues in the Future
- Keep your battery in top condition
- Inspect terminals for corrosion every 6 months
- Avoid water intrusion into the engine bay
- Scan for codes regularly if issues reappear
Conclusion
Fixing electric power steering on a 2010 Ford Fusion might seem daunting, but with a step-by-step approach, it’s entirely manageable. Start with the basics—battery, fuses, and sensor diagnostics—before jumping into costly repairs like a rack replacement. Many owners resolve the issue with just a cable fix or code reset.
If you’re still facing trouble, don’t hesitate to consult a qualified technician or your local Ford dealership. And if your car isn’t under warranty, fighting for goodwill coverage may still be worth the effort.
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