2018-2024 Expedition & Navigator Tailgate Hinge: Diagnosing Noises and Alignment Issues

Symptoms of a Failing Tailgate Hinge

Problems with the liftgate hinges on the Ford Expedition and Lincoln Navigator typically develop gradually. While outright failure is uncommon, wear and tear can lead to noticeable issues. Pay attention to these specific symptoms.

1. Popping, Creaking, or Grinding Noises

This is the most common sign of a failing tailgate hinge. A distinct popping or creaking sound when you begin to open or close the liftgate often points to wear in the hinge's internal pivot pin or bushing. The noise may be more prominent in cold weather or after the vehicle has been sitting. A forum user with an Expedition noted that lubricating the hinges, latches, and support struts with silicone spray resolved their creaking noise, indicating the issue was dry or worn pivot points.

2. Liftgate is Misaligned or Hard to Close

If you notice the gap around the tailgate is uneven, or if one side sits higher than the other when closed, a worn hinge could be the cause. As the pivot point wears, it allows for excessive play, letting the heavy liftgate sag. This can make the gate difficult to close and latch properly. In severe cases, the edge of the liftgate may even make contact with the vehicle's body or taillight, chipping the paint.

3. Power Liftgate Struggles, Stops, or Reverses

A binding or worn hinge forces the power liftgate motor to work much harder to open and close the gate. The system's safety sensors may interpret this extra resistance as an obstruction, causing the liftgate to stop moving or reverse direction unexpectedly. While this can be a symptom of a failing hinge, it's important to note that it can also be caused by a software issue. Ford has issued Technical Service Bulletins (TSBs) for an inoperative power liftgate due to software in the Rear Gate Trunk Module (RGTM), so this possibility should be investigated before replacing hardware.

4. Visible Corrosion or Cracks

A visual inspection can reveal problems. Look for rust forming around the pivot point of the hinge. While surface rust is normal, deep or flaking rust can cause the hinge to bind. Also, inspect the hinge body and the mounting points on the liftgate and vehicle body for any signs of stress cracks, which can occur from impact or excessive force.

Known Issues, TSBs, and Recalls for 2018-2024 Expedition and Navigator

As of mid-2024, there are no specific safety recalls issued by the National Highway Traffic Safety Administration (NHTSA) for the tailgate hinges on the 2018-2024 Ford Expedition or Lincoln Navigator.

However, there are related service bulletins that owners should be aware of:

• TSB SSM 49914 (and subsequent updates): This bulletin addresses an inoperative power liftgate on various Ford and Lincoln models, including the 2018-2021 Expedition and Navigator. The cause is identified as a software issue within the Rear Gate Trunk Module (RGTM), not a mechanical failure of the hinges. The prescribed fix is to reprogram the module with the latest software. If your power liftgate is acting up, this is a key diagnostic step to take before assuming the hinges are bad.
• Previous Generation Hinge Damage (TSB 17-0049): While this TSB applies to older Ford Escape and Lincoln MKC models, it contains a relevant warning. It notes that repeatedly forcing a power liftgate closed manually can deform the hinge mounting area on the vehicle's body. This can lead to severe misalignment. Although the Expedition and Navigator have a more robust design, it's a good practice to always use the power buttons to close a power liftgate.

Buying a Used Tailgate Hinge: What to Inspect

A used OEM hinge is often a great value compared to a new part from the dealer, especially since aftermarket options for the main liftgate hinge are not readily available. Because these are simple, durable mechanical parts, a good used hinge can last the remaining life of the vehicle. Here’s what to check before you buy.

1. Check for Play in the Pivot

This is the most critical check. Hold the two halves of the hinge and try to wiggle them against each other. A good hinge should have almost zero play or looseness in its pivot. If you can feel a noticeable clunk or significant movement, the hinge is worn and will cause the liftgate to sag and rattle.

2. Inspect for Cracks and Stress Marks

Carefully examine the entire hinge, especially around the bolt holes and the central pivot area. Look for hairline cracks in the metal. A hinge from a vehicle involved in a rear-end collision may have hidden damage. Reject any hinge that shows signs of cracking or being bent out of shape.

3. Look for Deep Corrosion

Surface rust on a used part is normal and can be easily cleaned and painted. However, you should avoid hinges with deep, flaking rust, especially in the pivot joint. This type of corrosion can cause the hinge to bind, making it stiff and noisy, and will put a major strain on a power liftgate motor.

4. Verify the Part Number and Side

The left and right hinges are not interchangeable. Ensure you are buying the correct side for your needs, or preferably, a matched set. The part numbers are distinct for each side.

• Right (Passenger) Side: JL1Z-7842900-A
• Left (Driver) Side: JL1Z-7842901-A

An earlier part number, JL1B-7842900/1-AC, may also be found on used parts and is compatible.

Cost of Replacing Tailgate Hinges (2018-2024 Expedition & Navigator)

The cost can vary significantly depending on whether you use new or used parts and if you perform the labor yourself.

Replacement Difficulty: 2018-2024 Expedition & Navigator

• Difficulty: 4 out of 5
• Estimated Time: 2-3 hours
• DIY Feasible: Yes, for experienced mechanics.

Replacing the hinges is a challenging task primarily due to the weight of the liftgate and the need to remove interior trim panels to access the bolts. The basic steps are as follows:

1. Open the liftgate and have a helper assist in supporting its full weight. Use padded stands or a support bar from inside the cargo area.
2. Remove the upper D-pillar trim panels and partially lower the rear of the headliner to gain access to the nuts that secure the hinges to the body.
3. Disconnect any electrical harnesses and washer fluid lines that pass from the body to the liftgate near the hinges.
4. While the gate is supported, have a helper unbolt the hinges from the liftgate itself. Then, unbolt the hinges from the vehicle body.
5. Install the new hinges, leaving the bolts slightly loose for adjustment.
6. Carefully and slowly close the liftgate to check the alignment of the gaps around the sides and top. Adjust the gate's position as needed before fully tightening all bolts to factory torque specifications.
7. Reconnect all electrical and fluid lines and reinstall the interior trim.

Frequently Asked Questions (FAQ)

Technical Specifications and Part Numbers