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2017 Navigator Air Suspension Sagging & Compressor Noise

0

Mike T. · rep 0 · May 25, 4:33 AM · 1 replies · solved · Question

Vehicle: 2017 Lincoln Navigator L Reserve

I own a 2017 Lincoln Navigator L Reserve, and I've started noticing some issues with the air suspension system. Lately, the rear of the vehicle seems to sag significantly overnight or after being parked for a few hours. When I start it up, I can hear the air compressor running for a long time, trying to level the vehicle.

The ride quality also feels a bit off, sometimes harsher than usual. I'm worried about the cost of repairs for air suspension components. Is this a common problem for this generation of Navigator?

What are the typical culprits for this kind of issue, and what should I expect in terms of parts and labor?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:33 AM

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Air suspension issues, particularly sagging and an overworked compressor, are common concerns for luxury SUVs like your 2017 Lincoln Navigator. Here's a breakdown:

Common Causes:

  1. Leaking Air Springs (Air Bags): Over time, the rubber components of the air springs can dry rot, crack, or develop small holes, leading to air leaks. This is the most common cause of sagging, especially overnight.
  2. Air Compressor Failure: If the air springs are leaking, the compressor has to work harder and longer to maintain ride height. This excessive workload can cause the compressor to wear out prematurely, leading to it running constantly or failing entirely. A noisy compressor is often a sign of it struggling.
  3. Air Line Leaks: The plastic air lines connecting the compressor to the air springs and other components can develop cracks or loose connections, causing air to escape.
  4. Height Sensor Malfunction: While less common for sagging, a faulty height sensor could send incorrect signals to the suspension control module, leading to improper leveling.

When to See a Shop:

  • Immediately: Continuing to drive with a leaking air suspension and an overworked compressor can lead to complete compressor failure, which is a more expensive repair. It can also affect handling and tire wear.
  • A qualified technician can diagnose the exact point of failure using specialized tools and leak detection methods. They can check for OBD codes related to the suspension system (e.g., C0562 for suspension control, C0570 for air suspension compressor).
  • Repair costs can vary significantly depending on the component. Air spring replacement can range from $500-$1000+ per corner, while a new air compressor can be $800-$1500+ including labor. It's advisable to get a professional inspection to avoid unnecessary part replacements.
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