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2018 MKX Power Liftgate Acting Up - Not Opening Fully

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Melissa G. · rep 0 · May 22, 6:12 AM · 1 replies · solved · Question

Vehicle: 2018 Lincoln MKX Reserve

Hey everyone,

I'm having a frustrating issue with the power liftgate on my 2018 Lincoln MKX Reserve. For the past few weeks, it's been really inconsistent. Sometimes it opens fine, but other times it only opens halfway or stops completely and then beeps. It's becoming a real hassle, especially when I have my hands full.

I've tried resetting it by disconnecting the battery for a bit, but that didn't seem to help. I also checked for any obstructions, but the area seems clear. Is this a common problem with these MKX models?

Any ideas on what might be causing this? Could it be a sensor, the motor, or something else entirely? I'm trying to avoid an expensive trip to the dealership if it's something I can troubleshoot myself or a known issue with a simple fix.

Thanks for any advice!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 6:12 AM

0

ClearTheCode admin answer:

The intermittent operation of your 2018 Lincoln MKX Reserve's power liftgate is a relatively common concern that can stem from several issues. Here's a breakdown of potential causes and troubleshooting steps:

  1. Inspect for Obstructions and Lubrication:

    • Cause: Even minor debris or lack of lubrication can impede the liftgate's movement.
    • Action: Thoroughly inspect the liftgate tracks and hinges for any foreign objects, dirt, or corrosion. Clean the tracks and apply a silicone-based lubricant to the hinges and struts. Test the liftgate several times after lubrication.

  2. Check Liftgate Struts:

    • Cause: Worn or weak gas struts can struggle to support the liftgate's weight, leading to incomplete opening or difficulty holding position.
    • Action: Manually try to lift and lower the liftgate. If it feels heavy or doesn't stay open on its own, the struts may need replacement. This is a common wear item.

  3. Power Liftgate Motor/Module Issues:

    • Cause: The electric motor or its control module can malfunction, leading to inconsistent operation.
    • Action: While less common for intermittent issues, a failing motor or module can cause these symptoms. A diagnostic scan tool (even a basic OBD-II scanner that can read BCM codes) might reveal specific trouble codes related to the liftgate module (e.g., B1A00 series codes for motor faults or sensor issues).

  4. Sensor Calibration/Malfunction:

    • Cause: The liftgate uses sensors (like pinch protection sensors or position sensors) to detect obstructions and its current position. If these are dirty, misaligned, or faulty, they can trigger false stops.
    • Action: Ensure the rubber seals around the liftgate are clean and free of damage. Sometimes, a recalibration procedure (often requiring a dealership tool) can resolve sensor-related issues.

When to See a Shop: If after checking for obstructions, lubricating components, and inspecting the struts, the problem persists, it's advisable to visit a qualified technician. They can perform a deeper diagnostic scan using specialized tools to pinpoint exact fault codes from the Body Control Module (BCM) or the dedicated liftgate module. This will help determine if the issue is with the motor, control module, wiring, or a specific sensor that requires replacement or recalibration. Ignoring the issue can lead to further damage or complete liftgate failure.

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