Overview
Just like your MKS’s silky ride when everything works properly, this guide floats you through every aspect of Lincoln’s air suspension system—from identifying early warning signs to weighing repair options against conversion kits. The article provides practical DIY diagnostic techniques, maintenance strategies to extend system life, and cost-saving alternatives that can prevent the $2,000-$4,000 shock of complete system replacement, all while helping owners make informed decisions based on their vehicle’s age and personal budget constraints.
Table of Contents
- Understanding Lincoln MKS Air Suspension
- Common Air Suspension Problems
- Warning Signs of Failing Air Suspension
- Preventive Maintenance Tips
- DIY Diagnostics
- Repair Options
- Cost-Saving Strategies
- Conversion Kits
- When to Seek Professional Help
- Conclusion
- Frequently Asked Questions
Understanding Lincoln MKS Air Suspension
The Lincoln MKS air suspension system is a marvel of automotive engineering that provides that cloud-like ride quality many luxury car owners cherish. As someone who’s been elbow-deep in these systems for over 15 years, I can tell you they’re impressive when working properly – but they can also be a source of significant expense when things go wrong.
At its core, the Lincoln MKS air suspension replaces traditional steel springs with air springs or bags. These components work alongside specialized struts, compressors, sensors, and control modules to automatically adjust ride height and comfort based on driving conditions. It’s this complexity that gives the MKS its signature smooth ride.
The system constantly monitors and adjusts itself. When you’re cruising down the highway, it might lower the vehicle slightly for better aerodynamics. Loading up the trunk for a road trip? The rear will automatically level itself. This sophisticated technology makes for an exceptional driving experience, but it introduces multiple potential failure points that conventional suspension systems simply don’t have.
Most Lincoln MKS models built between 2009 and 2016 came equipped with this air suspension system. While the engineering is impressive, as these vehicles age, owners frequently encounter issues that can lead to costly repairs. However, with the right knowledge, many of these expenses can be reduced or even avoided altogether.
Common Air Suspension Problems
The Lincoln MKS air suspension system, while sophisticated, has several common failure points that I’ve seen repeatedly in my shop. Understanding these vulnerabilities can help you address problems before they escalate into major repairs.
Air springs (or bags) are often the first components to fail. These rubber components naturally degrade over time due to road debris, extreme temperatures, and normal aging. When they develop even tiny pinhole leaks, the system can’t maintain proper pressure. Replacing these bags individually can cost between $200-$500 each, not including labor.
The air compressor is another frequent culprit. This workhorse runs whenever the system needs adjustment, and they simply wear out over time. When running excessively to compensate for leaky bags, they often fail prematurely. A replacement compressor typically runs $300-$800 plus installation.
Height sensors and the control module can also develop issues. These electronic components are sensitive to moisture and vibration, leading to erratic operation or complete system failure. Sensors might cost $100-$200 each, while a new control module could set you back $500-$1,000.
Air lines and fittings are less expensive components but equally problematic. These small plastic tubes and connectors can crack or become brittle, especially in cold climates. While the parts are relatively inexpensive, accessing them for replacement can make the repair labor-intensive.
The dryer assembly, which prevents moisture from damaging the system, frequently fails on higher-mileage vehicles. This typically costs $100-$200 to replace but can save thousands in prevented damage if replaced during routine maintenance.
Additionally, technical service bulletins have been issued for several model years addressing specific air suspension issues, suggesting these problems are widespread enough to warrant manufacturer attention.
Warning Signs of Failing Air Suspension
Catching air suspension issues early can save you substantial money and headaches. From my experience working on countless Lincoln MKS vehicles, several telltale signs indicate your system is beginning to fail.
The most obvious symptom is an uneven stance. If your MKS appears to be sagging or leaning to one side – especially after sitting overnight – that’s a clear indication that one or more air springs are losing pressure. You might notice one corner or the entire rear end sitting noticeably lower than normal.
Listen for your compressor running excessively. A healthy system only needs occasional air pump operation, but a failing system will have the compressor working overtime trying to maintain pressure. If you hear it running for extended periods or cycling on and off frequently, that’s a red flag.
Dashboard warning lights are another clear indicator. Your Lincoln may display a “Suspension Fault” message or illuminated suspension warning light. Don’t ignore these alerts – they’re your vehicle’s way of telling you something’s wrong before the problem worsens.
Pay attention to ride quality changes. If your once-smooth MKS suddenly feels bouncy, harsh, or bottoms out over bumps, your air suspension isn’t maintaining proper pressure. This degradation in comfort often happens gradually, so you may not notice until it’s quite pronounced.
Unusual noises during suspension movement should raise concerns. Knocking, popping, or hissing sounds when driving over bumps or entering driveways can indicate failing components. Hissing, in particular, often means you have an active air leak.
The compressor itself might make abnormal sounds. If you hear grinding, squealing, or labored operation from the compressor, it’s likely nearing failure. This usually means it’s working harder than designed to compensate for leaks elsewhere in the system.
According to a J.D. Power reliability study, suspension issues account for a significant percentage of Lincoln MKS repair complaints after the 60,000-mile mark. Being vigilant about these symptoms can help you address problems before complete system failure occurs.
Preventive Maintenance Tips
Preventive care is your best defense against costly Lincoln MKS air suspension repairs. I’ve helped many owners extend their system’s lifespan with these straightforward maintenance practices.
First, keep your vehicle clean – especially the undercarriage. Road salt and debris can accelerate wear on air springs and lines. A thorough undercarriage wash several times yearly (particularly after winter driving) can significantly extend component life.
Inspect visible air suspension components regularly. Look for signs of cracking, corrosion, or damage to the air springs, which are typically visible when looking at the wheel wells. Even small cracks or abrasions can eventually lead to leaks.
Monitor your system’s performance using these simple checks:
- Park on level ground and check if your MKS sits evenly at all four corners
- Listen for the compressor when starting your vehicle – excessive running indicates potential leaks
- Pay attention to how quickly your suspension levels after loading/unloading passengers or cargo
Consider having the system’s drying element replaced during regular maintenance intervals – typically every 50,000 miles. This inexpensive component prevents moisture from causing internal corrosion and costs far less than replacing moisture-damaged components.
Address minor issues promptly. If you notice slight sagging or hear the compressor running more frequently, investigate immediately. Early intervention often means repairing one component rather than replacing the entire system.
Avoid overloading your vehicle beyond manufacturer specifications. Excessive weight strains the compressor and air springs, accelerating wear. The Lincoln MKS was designed for comfort, not as a heavy hauler.
Consider performing a module programming update if recommended by your mechanic. Sometimes, software tweaks can optimize system performance and reduce wear on physical components.
Maintain proper tire inflation. While seemingly unrelated, improper tire pressure forces the suspension system to compensate unnecessarily, increasing wear on components. Follow the recommended pressures listed on your driver’s door jamb sticker.
DIY Diagnostics
Before rushing to a repair shop, there are several diagnostic steps you can perform yourself to pinpoint Lincoln MKS air suspension issues. These checks can help you understand what’s happening and potentially save hundreds in diagnostic fees.
The soap bubble test is my go-to first step for finding leaks. Mix a solution of dish soap and water, then apply it with a spray bottle or sponge to suspected leak areas – typically around air springs, connections, and lines. Air escaping will create visible bubbles, helping you locate the exact source of leaks.
To test your compressor’s function, start with your vehicle turned off. Listen carefully when you first start the engine – you should hear the compressor briefly activate to pressurize the system. If it runs continuously or doesn’t run at all, you’ve identified a potential issue.
Checking ride height is straightforward with these steps:
- Measure from the center of each wheel to the wheel arch above it
- Compare measurements side-to-side (left front to right front, left rear to right rear)
- Differences greater than half an inch indicate a suspension imbalance
- Check measurements again after the vehicle sits overnight to see if height is maintained
For electronic testing, an OBD-II scanner can be invaluable. Basic models start around $30 and can retrieve error codes specific to the suspension system. Look for codes beginning with “C” followed by four digits, which typically relate to suspension issues. Professional-grade scanners like those from Autel or Launch provide even more detailed information but cost considerably more.
Test each corner individually by pushing down firmly on the vehicle body above each wheel, then releasing. A properly functioning air suspension will quickly return to its normal position. If one corner rebounds more slowly or remains depressed, that area likely has a leak or failing component.
Listen for air leaks at night or in a quiet garage when background noise is minimal. Sometimes, you can hear the subtle hiss of escaping air that would be inaudible during the day.
Repair Options
When your Lincoln MKS air suspension needs attention, you have several repair paths to consider. I’ve guided countless owners through these options, helping them make choices based on their budget and how long they plan to keep their vehicle.
Dealer service centers offer factory-authorized repairs using OEM (Original Equipment Manufacturer) parts. While this provides peace of mind with factory-trained technicians and parts identical to original specifications, it’s typically the most expensive route. Expect to pay $1,000-$3,000 for significant air suspension repairs at a dealership.
Independent repair shops can offer substantial savings over dealer prices. Many skilled mechanics have extensive experience with Lincoln air suspension systems and can provide quality repairs using either OEM or high-quality aftermarket parts. You might save 30-50% compared to dealer prices while still getting professional service.
Mobile mechanics represent a growing trend that can save you both time and money. These professionals come to your location and often have lower overhead costs than traditional shops. For simpler repairs like replacing a single air spring, this can be both convenient and economical.
Component-level repair is often possible rather than replacing entire assemblies. For example, rather than installing an entirely new compressor assembly ($800+), a skilled technician might be able to rebuild the existing unit for half the cost. This approach typically requires a specialist but can yield significant savings.
When considering repairs, always factor in the vehicle’s age and value. For older Lincoln MKS models worth less than $10,000, investing $2,500 in air suspension repairs might not make financial sense compared to alternative solutions like conversion kits, which we’ll discuss next.
Before making any repair decision, check if your vehicle might be covered under a recall notice or compliance campaign. While not common for suspension issues, it’s worth verifying with your VIN number on the NHTSA website.
Cost-Saving Strategies
Maintaining your Lincoln MKS air suspension doesn’t have to drain your bank account. I’ve helped many owners keep their luxury ride experience while minimizing expenses through these practical approaches.
Consider quality aftermarket components instead of OEM parts. Companies like Arnott and Strutmasters manufacture air suspension components specifically for the Lincoln MKS that can cost 40-60% less than dealer parts while offering comparable quality and often better warranties. In many cases, these aftermarket options incorporate improvements that address weaknesses in the original design.
Repair kits can save substantial money compared to complete assemblies. For example, rather than replacing an entire air strut ($600-800), you might be able to purchase just the air spring portion ($150-250) and reuse your existing strut body. This approach requires more labor but significantly reduces parts costs.
Don’t overlook rebuilt options. Remanufactured compressors and electronic components typically cost half what new ones do and usually carry warranties. Quality rebuilders thoroughly test components before selling them, often resulting in reliable parts at substantial savings.
Consider tackling simpler repairs yourself if you’re mechanically inclined. Replacing air springs or a dryer assembly can be done in a home garage with basic tools and can save hundreds in labor costs. Numerous detailed video tutorials on platforms like YouTube walk through these repairs step-by-step.
Use diagnostic trouble codes to your advantage. If your scanner identifies a specific sensor issue, you can replace just that component rather than letting a shop sell you unnecessary parts. Knowledge is power when it comes to avoiding overpayment.
Shop around for competitive quotes. I’ve seen pricing variations of over $1,000 for identical repairs between different shops in the same city. Don’t hesitate to get multiple estimates – and be specific about whether they’ll use OEM or aftermarket parts in their quote.
When multiple components are failing, consider timing for maximum efficiency. For instance, if your compressor is working but struggling, and you’re already replacing air springs, it might be economical to replace the compressor simultaneously to save on future labor costs.
Conversion Kits
For many Lincoln MKS owners, especially those with higher-mileage vehicles, conversion kits offer a pragmatic alternative to repeatedly fixing air suspension components. These kits replace the entire air system with conventional coil springs and struts, eliminating future air-related problems.
A quality conversion kit typically costs $600-$1,000 – significantly less than rebuilding the air system. Installation usually takes 2-4 hours of professional labor ($200-$400), making the total investment around $800-$1,400. Compared to the $2,000-$4,000 you might spend rebuilding the air system, the financial advantage is clear.
Beyond the immediate cost savings, you’ll eliminate ongoing air suspension maintenance and repairs. No more compressor replacements, air spring leaks, or control module issues. For many owners of older MKS models, this peace of mind is invaluable.
However, there are tradeoffs to consider. The ride quality, while still comfortable, won’t match the adaptive nature of the original air system. You’ll lose the automatic leveling feature when carrying heavy loads, and the vehicle will have a fixed ride height rather than adjusting for different driving conditions.
When selecting a conversion kit, quality matters tremendously. Premium options from companies like Arnott, Strutmasters, and Unity include carefully engineered springs matched to your Lincoln’s weight and handling characteristics. Cheaper generic kits often result in a bouncy, uncomfortable ride that doesn’t match your luxury vehicle’s character.
The installation process is straightforward for an experienced mechanic. Most kits include detailed instructions, and the work can typically be completed in a single day. Some owners with mechanical skills even tackle this as a weekend DIY project, though specialized tools like spring compressors are required.
One important consideration: conversion is essentially a one-way street. Once you’ve removed the air components, returning to the original air system would be prohibitively expensive. Make this decision knowing it permanently alters your vehicle’s suspension design.
When to Seek Professional Help
While I’ve provided many DIY approaches throughout this article, there are certain situations where professional assistance becomes necessary for Lincoln MKS air suspension issues. Recognizing these scenarios can save you from costly mistakes.
Seek professional help immediately if your vehicle is sitting extremely low or unevenly on its suspension. Driving in this condition can damage other components like fenders, exhaust systems, and undercarriage parts. Having your MKS towed to a qualified shop is often cheaper than fixing these secondary damages.
Electronic diagnostics beyond basic error codes generally require professional equipment. If your vehicle displays persistent suspension warnings that don’t correlate with obvious physical problems, you likely need a shop with advanced diagnostic capabilities to pinpoint the electronic issues.
Consider professional assistance when dealing with these specific scenarios:
- Multiple components failing simultaneously
- Intermittent problems that are difficult to reproduce
- Installation of complete conversion kits if you lack specialized tools
- Any air suspension work if your vehicle is still under warranty
When selecting a professional, look for specialists with specific Lincoln experience. Independent shops that regularly work on luxury vehicles often have the expertise needed without dealer prices. Ask about their experience specifically with the Lincoln MKS air suspension system, as it differs from other brands.
Request a detailed inspection before authorizing extensive repairs. A thorough evaluation should identify all failing components, allowing you to make an informed decision about repairs versus conversion options.
Finally, always get a written estimate before work begins. This should detail which components will be replaced, whether they’ll use OEM or aftermarket parts, labor costs, and any warranty coverage for the repairs.
Conclusion
The Lincoln MKS air suspension system represents both the luxury and potential maintenance challenges of advanced automotive engineering. While it provides that signature cloud-like ride quality Lincoln owners love, it also introduces complexities that can become costly as these vehicles age.
By understanding the warning signs of failing air suspension, implementing preventive maintenance practices, and knowing your repair options, you can make informed decisions that keep your Lincoln MKS riding comfortably without devastating your budget. Whether you choose to maintain the original air system, repair components as needed, or convert to conventional springs, this knowledge empowers you to protect your investment.
Remember that early intervention is key – addressing small issues before they cascade into system-wide failures can save thousands of dollars. Regular inspection, keeping the undercarriage clean, and listening for unusual suspension sounds can all help you catch problems in their infancy.
For many owners, a balanced approach works best: maintaining the air suspension through the middle years of vehicle ownership, then considering conversion options as the vehicle ages beyond 8-10 years. This strategy often provides the best combination of luxury experience and long-term economy.
Whatever path you choose for your Lincoln MKS air suspension, the most important factor is making decisions based on knowledge rather than emergency necessity. With proper care and informed choices, you can enjoy your luxury vehicle’s exceptional ride quality for many years to come – without the shock of unexpected repair bills.
Frequently Asked Questions
How long does Lincoln MKS air suspension typically last?
With proper maintenance, Lincoln MKS air suspension components typically last 80,000-100,000 miles. Environmental factors like climate and road conditions significantly impact longevity.
Can I drive with a failed air suspension?
Driving with failed air suspension is not recommended as it can damage other components and compromise safety. If necessary, drive slowly and only for short distances to a repair facility.
How much does it cost to replace the entire air suspension system?
Complete Lincoln MKS air suspension replacement costs between $2,000-$4,000 at a dealership. Independent shops may offer the same service for 30-50% less.
Will a conversion kit affect my vehicle’s value?
Conversion kits typically reduce resale value slightly on newer vehicles but have minimal impact on older models. For high-mileage vehicles, reliable conventional suspension might actually be more appealing to buyers.
Is it normal to hear the air compressor run occasionally?
Yes, hearing the air compressor run briefly when starting your vehicle or after significant temperature changes is normal. Frequent or extended operation indicates potential leaks.