How to Diagnose and Fix Suspension Problems in a 2018 Range Rover

Owning a 2018 Range Rover means enjoying luxury, comfort, and impressive off-road capability. But when the suspension starts acting up, that smooth ride can quickly turn into a frustrating and costly problem. Suspension issues in this model. Especially air suspension failures. Are fairly common, and catching them early can save both time and money. Let’s break down how to identify, diagnose, and fix these problems before they worsen.

A Range Rover with a suspension issue won’t always throw a warning light right away. Sometimes, the vehicle itself lets you know something’s wrong long before the dashboard does. Here are some of the most common indicators:

• Uneven Ride Height – If your Range Rover looks lopsided or lower on one side, the air suspension system may not be distributing pressure properly.
• Bumpy or Harsh Ride – This SUV should glide over rough terrain. If bumps feel rougher than usual, the air struts or shocks might be failing.
• Warning Messages on the Dash – Error messages like “Suspension Fault: Normal Height Only” or “Suspension Fault” indicate something isn’t right.
• Strange Noises from the Suspension – Hissing sounds can signal an air leak, while groaning or creaking noises might point to worn components.
• Vehicle Sags After Parking – If the car sits lower after being parked overnight, it could mean there’s a slow leak in the air suspension system.
• Delayed or No Response from the Suspension Controls – If raising or lowering the suspension takes longer than usual or doesn’t work at all, the compressor or related components might be struggling.

These symptoms shouldn’t be ignored. Left unchecked, a failing suspension can lead to bigger (and much more expensive) problems down the road.

Pinpointing the exact cause of a suspension issue requires some hands-on troubleshooting. Here’s how to get started:

Turn the engine off and listen closely. A faint hissing noise usually means air is escaping from the system. Pay particular attention to the air struts and bags near each wheel.

Park the vehicle on level ground, then take a step back and check if it looks uneven. If one corner sits lower, that’s a major clue.

The air suspension compressor is responsible for maintaining ride height. If you notice your Range Rover sitting low and the compressor runs constantly, it may be overworking due to a leak. If it doesn’t turn on at all, it could be faulty or the relay and fuse may need inspection.

A diagnostic tool like an OBD-II scanner can pull fault codes related to suspension issues. Codes like C1A20 (pressure increases too slowly) or C1A13 (pressure does not decrease when venting) can offer valuable insight.

If adjusting the ride height takes longer than usual or doesn’t work at all, the problem could be in the compressor, air lines, or control module. Compare response time to how the system functioned when it was in prime condition. Any lag usually signals trouble.

Once you’ve identified the issue, the next question is, should you fix it yourself or leave it to the professionals?

Some repairs are manageable if you’re comfortable working on cars. Basic fixes include:

• Replacing a Faulty Relay or Fuse – A burned-out suspension fuse or relay is an easy fix and costs under $50.
• Fixing Small Air Leaks – If the issue is a minor leak in an air hose, patch kits can sometimes do the trick.
• Swapping Out an Air Strut or Air Bag – While removing an air strut can be challenging, experienced DIYers with the right tools can replace one for a few hundred dollars instead of paying a shop over $1,000.

Some jobs require specialized tools and expertise. Situations where you’ll likely need a professional include:

• Compressor Failure – A new compressor can cost $500-$1,000, not including labor.
• Major Air Leaks – If an air line has multiple leaks or connectors are damaged, proper replacement can be tricky.
• Electrical or Compressor Control Issues – Diagnosing suspension electronics can be complex without specialized diagnostic tools.

To give a general idea of repair costs:

• DIY air strut replacement: $300-$600 per strut
• Professional air strut replacement: $1,000+ per strut
• DIY compressor replacement: $500-$1,000
• Professional compressor replacement: $1,500+
• Sensor replacement: $200-$500

While tackling simple fixes can save money, attempting complex repairs without proper tools or expertise can lead to more damage. If in doubt, consulting a trusted mechanic or Range Rover specialist is the safer bet.

Preventative maintenance goes a long way in avoiding costly suspension repairs. Here are some essential habits to extend the system’s lifespan:

• Regularly Inspect for Leaks – Small leaks can turn into bigger ones. Checking the system occasionally helps catch problems early.
• Limit Suspension Adjustments – Constantly adjusting ride height strains the compressor over time.
• Use the Suspension in “Access Mode” Carefully – Lowering the vehicle too frequently can contribute to premature airbag wear.
• Service the System When Required – If the compressor starts running longer than usual or the vehicle sags overnight, get it checked before a small problem escalates.

A well-maintained air suspension system keeps your Range Rover riding smoothly for years. Waiting until a major failure happens usually means a bigger repair bill, so spotting issues early is crucial.

Suspension problems in a 2018 Range Rover can go from annoying to expensive in a hurry. Catching the warning signs early makes all the difference, and knowing whether to DIY or call a pro can save both time and money. If you’ve been putting off a suspension repair, now’s the time to take action before it leaves you stranded. Or worse, with an even bigger repair bill.

If you’ve dealt with suspension issues on your Range Rover, share your experience in the comments. Your insights might help another owner tackle the same challenge!