2013-2019 Ford Flex AWD Strut Guide: Noises, Replacement & Part Numbers

Symptoms of a Failing Ford Flex Strut

When the front struts on a 2013-2019 Ford Flex begin to fail, you'll likely notice several distinct signs. Recognizing these symptoms early can help you address the problem before it leads to more significant issues or unsafe driving conditions.

Common Noises and Vibrations

• Clunking or Knocking Over Bumps: This is the most frequently reported symptom. A sharp "clunk" or dull "knock" from the front end when driving over bumps, potholes, or uneven pavement often points to a worn strut or a failing strut mount.
• Groaning or Squeaking When Turning: If you hear a groaning, creaking, or binding noise when turning the steering wheel at low speeds, such as in a parking lot, it often indicates a bad strut mount bearing. This bearing allows the strut to pivot as you steer.
🎬 See this guide on identifying a failing strut mount
• Excessive Vibration: A failing strut loses its ability to dampen road imperfections, which can translate into more vibration felt in the cabin and through the steering wheel.

Changes in Handling and Performance

• Bouncy or Floating Ride: One of the clearest signs of a bad strut is a ride that feels overly bouncy, like a trampoline. After hitting a bump, the vehicle may continue to bounce up and down instead of settling immediately.
• Nose-Diving During Braking: When you apply the brakes firmly, you may notice the front end of the Flex dipping forward excessively. This happens because the worn struts can no longer properly support the vehicle's weight as it shifts forward.
• Unstable or Wandering Steering: A feeling that the vehicle is less stable, sways during lane changes, or pulls to one side can be caused by failing struts affecting the suspension geometry.
• Uneven Tire Wear: Worn struts can cause the tires to bounce excessively, leading to a specific type of uneven wear called "cupping" or "scalloping." Running your hand over the tire tread may reveal high and low spots.

Visual Signs

• Fluid Leaks: The strut body is filled with hydraulic fluid. If the seals fail, this fluid can leak out, leaving an oily or wet residue on the strut housing. A leaking strut has lost its damping ability and must be replaced.
🎬 Watch: How to diagnose a bad strut on your car

Buying a Used Suspension Strut for a 2013-2019 Ford Flex

Purchasing a used OEM strut can be a cost-effective way to restore your vehicle's ride quality without the high price of new dealer parts or the potential quality issues of some aftermarket brands. Here’s what to look for.

Critical Compatibility Checks

Physical Inspection Checklist

When inspecting a used strut assembly, look for the following:

• No Leaks: The strut body should be dry and free of any oily residue. Any sign of a fluid leak means the strut is bad.
• Piston Rod Condition: The shiny chrome rod extending from the top of the strut should be smooth and free of rust, pitting, or damage. Nicks or corrosion on the rod can tear the seal and cause leaks.
• Good Damping: If possible, try to compress the strut by hand (this is easier if it's a bare strut, not a full assembly). It should move smoothly and offer firm resistance in both directions. It should not feel bouncy or get stuck.
• Strut Mount Condition: Inspect the rubber on the top strut mount. It should be intact, without large cracks or signs of separation. A collapsed or torn mount will cause clunking noises.
• Coil Spring Integrity: Check the coil spring for any cracks, breaks, or severe corrosion that could weaken it.

Mileage and Condition

Mileage is a key factor, as struts are wear items. A strut from a vehicle with 50,000-75,000 miles is a reasonable choice, but condition is just as important. A lower-mileage part from a vehicle driven on rough, pothole-filled roads may have more wear than a higher-mileage part from a smooth-highway car. Always prioritize physical condition over mileage alone.

Known Issues, TSBs, and Recalls

While there are no specific recalls for the front struts themselves, there is a significant suspension-related recall for this generation of Ford Flex.

• NHTSA Recall 20V072000 (Ford Recall #20S04): This recall was issued for 2013-2018 Ford Flex and Lincoln MKT vehicles. It addresses rear suspension toe links that may fracture, causing a sudden change in vehicle handling and increasing the risk of a crash. While this is a rear suspension issue, it highlights the stresses placed on the vehicle's suspension components. When inspecting or repairing the front suspension, it is wise to have the status of this rear suspension recall checked and addressed if it hasn't been already.

No Technical Service Bulletins (TSBs) directly related to front strut failure were found during research.

Replacement Information

DIY vs. Professional Installation

Replacing the front struts on a Ford Flex is considered an advanced DIY job. It requires a good set of tools, including large sockets, a breaker bar, and a torque wrench. If you are not replacing the entire strut assembly (a "quick-strut"), you will also need a spring compressor, which is a specialty tool that can be very dangerous if used improperly. Due to the complexity and safety risks, many owners opt for professional installation. An alignment is mandatory after replacing the struts to prevent uneven tire wear and handling problems.

Related Parts to Replace

When replacing struts, it's highly recommended to replace them in pairs (both front struts at the same time) to ensure even handling and stability. It is also a good time to consider replacing these related components:

• Strut Mounts & Bearings: If you are not buying a complete "quick-strut" assembly, replacing the strut mount and bearing is critical. A worn bearing can cause steering noise and stiffness.
• Sway Bar End Links: These links connect the sway bar to the strut. They are a common source of clunking noises and are inexpensive to replace at the same time.
• Strut Bellows (Dust Boot) and Bump Stop: These protect the strut rod and cushion impacts. They are often included with new struts but should be verified.

Key Torque Specs

Using a torque wrench is crucial for suspension work. While specs can vary slightly by year and specific model, these are commonly cited values. Always verify with a service manual for your specific vehicle.

Cost of Replacing a Ford Flex Strut

The cost can vary significantly based on the parts used (bare strut vs. full assembly) and labor rates. The following is an estimated breakdown for replacing one front strut.

Frequently Asked Questions