A Mechanic's Guide to the 2016-2021 Ford Expedition Steering Rack Assembly
Your Expedition has one of two different steering systems—knowing which one is the key to a successful repair.
- Verify your Expedition's year (2016-2017 vs. 2018-2021) before ordering, as the EPAS steering racks are not interchangeable.
- A 'Power Steering Assist Fault' warning is a serious issue that requires immediate diagnosis, as a sudden loss of steering assist can occur.
- A new aftermarket rack is often a more reliable choice than a remanufactured unit due to widespread quality issues with rebuilt parts.
- After replacement, a professional wheel alignment and electronic steering calibration with a scan tool are mandatory for safety and proper function.
A Critical Difference: 2016-2017 vs. 2018-2021 Models
Before you shop for a part, you must know that the 2016-2021 year range covers two different generations of the Expedition with different steering systems. The 2016-2017 models are the end of the third generation, 🎬 Watch: Step-by-step replacement guide for 2007-2017 models. while the 2018-2021 models are the fourth generation. Although both use an Electronic Power Assisted Steering (EPAS) system, the parts are different and are not interchangeable. Always confirm the part fitment for your specific year.
Common Symptoms of a Failing Steering Rack
When the EPAS rack in your Expedition starts to fail, the signs are usually electronic, not hydraulic. You will likely see a warning message before you notice a physical problem like a fluid leak.
- "Power Steering Assist Fault" Message: This is the most common sign of a problem. The warning will appear on your dashboard, indicating the EPAS system has detected a fault. This can be caused by a bad sensor, a problem with the electric motor, or even low battery voltage.
- Sudden Heavy Steering: The steering may suddenly become very difficult to turn, especially at low speeds or when parking. This happens when the electric motor stops providing assistance. Restarting the truck might temporarily fix it, but it's a clear sign of failure.
- Steering Wheel Shakes or Oscillates: In some cases, the steering wheel may shake or move on its own. This is a serious safety risk and can be related to faulty replacement parts.
- Grinding or Clicking Noises: A mechanical grinding or clicking sound when you turn the wheel can point to a problem with the gears inside the electric motor or the rack itself.
- Wandering or Loose Steering: If you feel a disconnect between the steering wheel and the road, or the truck wanders in its lane, the internal components of the rack could be worn.
Known Issues, TSBs, and Recalls
For the 2016-2017 models, Ford issued Technical Service Bulletin (TSB) #SSM 46474 for vehicles where the power steering control module (PSCM) would not communicate, sometimes due to a simple blown fuse. For the 2018-2021 models, a more significant issue is Equipment Recall 24S45. This recall is for certain replacement EPAS steering gears sold by dealers that were built with a defect, which could cause the steering wheel to oscillate. This highlights the importance of getting a quality replacement part.
Choosing Your Aftermarket Part: New vs. Remanufactured
When your steering rack fails, you have a few replacement options. New OEM racks from Ford are very expensive, and for older models, they may be discontinued. This leads most owners to the aftermarket.
Remanufactured Racks: A remanufactured (or rebuilt) rack is an old OEM unit that has been taken apart, cleaned, and fitted with new seals and wearable parts. This applies to both OEM Motorcraft and many aftermarket brands. However, quality can be inconsistent. Forum users report that even remanufactured Motorcraft racks can fail prematurely. The quality of the original core and the rebuilding process are critical, and sometimes they fall short.
New Aftermarket Racks: A new aftermarket rack is built from 100% new components. You are not getting a repaired part with a history. This often provides better long-term reliability. Given the electronic complexity of the EPAS system, starting with all-new components can be a significant advantage.
- Atlantic Automotive Enterprise (AAE): AAE is known for producing both new and remanufactured steering components. Their new units are made with OE-quality components and are fully tested in the USA. For a complex part like an EPAS rack, choosing a new AAE unit can be a safer bet than a remanufactured alternative.
- BBB Industries: This brand primarily offers remanufactured parts. Owner reviews and forum discussions for their remanufactured racks are often negative, with frequent complaints about leaks and premature failure on other vehicle models. While they offer a warranty, doing the job twice is a major headache.
Cost of Replacing a Ford Expedition Steering Rack
| Part Type | Estimated Cost |
|---|---|
| New OEM | $1,100 - $2,000+ |
| New Aftermarket | $723 - $784 |
| Remanufactured (Aftermarket or OEM) | $350 - $650 |
| Used (Salvage Yard) | $200 - $400 |
| Shop Labor | $300 - $500 |
Frequently Asked Questions
What is the main difference between the 2017 and 2018 Expedition steering rack?
They are from two different vehicle generations. While both use an electric power steering (EPAS) system, the rack assembly, mounting points, and electronic controls are completely different. You cannot use a 2018 rack on a 2017 model, or vice-versa.
Can I still drive my Expedition if the power steering fails?
You can, but it is not safe. The steering will become extremely heavy and difficult to manage, especially at low speeds. Since the failure can be intermittent, you should not trust the system until it is repaired.
Do I need a wheel alignment after replacing the steering rack?
Yes, an alignment is absolutely required. Replacing the steering rack disconnects the steering system from the wheels. A four-wheel alignment is necessary to ensure the vehicle drives straight and does not wear out your tires.
What is EPAS calibration?
After the new rack is installed, a mechanic must use a compatible scan tool to calibrate the new Power Steering Control Module. This procedure resets the steering angle sensor and ensures the electronic system works correctly with the rest of the vehicle. This is not an optional step.
🎬 Watch: How to adjust and calibrate Ford electronic steering settings.Helpful Videos
Technical Specifications
The primary difference is the system generation: 2016-2017 models use a third-generation EPAS system, while 2018-2021 models use a fourth-generation EPAS system with a fully integrated Power Steering Control Module (PSCM). The parts are not cross-compatible.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Ford Expedition:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- A Critical Difference: 2016-2017 vs. 2018-2021 Models
- Common Symptoms of a Failing Steering Rack
- Known Issues, TSBs, and Recalls
- Choosing Your Aftermarket Part: New vs. Remanufactured
- Cost of Replacing a Ford Expedition Steering Rack
- Frequently Asked Questions
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