How to reset air suspension on a Range Rover – fault reset

In the precarious position of needing to know how to reset the air suspension on a Range Rover? Yep, been there and done it!

Resetting the suspension fault on a Range Rover is a vital maintenance task that ensures performance and comfort while driving.

A suspension fault can lead to a rough ride, reduced handling, and potential long-term damage if not addressed promptly.

Read on for a step-by-step guide on how to reset the air suspension on a Range Rover and the symptoms, common causes, costs, and potential alternative issues to consider.

What models are affected?

• Land Rover Defender
• Range Rover Discovery
• Range Rover Evoque
• Range Rover Sport
• Range Rover Velar
• Range Rover Vogue

Signs and symptoms of when you need to reset the air suspension

• Harsh or bumpy ride
• Uneven or sagging suspension
• Abnormal noises coming from the suspension system
• Warning message on the instrument cluster (e.g., “Air Suspension Fault”)
• Leaks in the air suspension system
• Faulty height level sensors
• Electrical issues such as a blown fuse
• Compressor failure
• Accumulation of dirt and debris in the system

List of possible OBD codes

When your Range Rover’s air suspension system malfunctions, it may trigger specific OBD codes.

These codes can help narrow down the issue and guide you toward a solution.

Here are some of the common OBD codes related to air suspension faults in Range Rovers:

• C1A20: Pressure Increases Slowly When Filling Reservoir
• C1A21: Pressure Increases Slowly When System Is Closing
• C1A22: Pressure Increases Too Slowly When System Is Closing
• C1A23: Pressure Increases Too Slowly When Filling Reservoir
• C1A24: Pressure Decreases Too Slowly When System Is Opening
• C1A25: Pressure Decreases Too Slowly When System Is Opening

Buying guide: Best Land Rover OBD2 scanner tools

What can cause low air suspension?

• Leaks in the air suspension system
• Faulty height level sensors
• Compressor failure
• Accumulation of dirt and debris in the system

Cost of resetting and repairing air suspension

The cost of resetting and repairing air suspension on a Range Rover can vary greatly depending on the cause of the issue and the location in which the repair is being made.

Factors that can affect the cost include the Range Rover’s age and model, the damage’s extent, and the cost of labor at the repair facility.

Resetting the air suspension on a Range Rover can typically cost anywhere from $100 to $300, depending on the cause of the issue and the location of the repair.

However, if the air suspension needs to be repaired, the cost can range from $500 to $1,500.

It is always best to get a detailed quote and a proper diagnosis from a certified Range Rover mechanic to get an accurate estimate of the cost of repairing or resetting the air suspension.

Cost of resetting the air suspension yourself

The cost of resetting the air suspension will depend on the tools and parts you need to purchase.

Some tools and parts you may need include a diagnostic scanner, air compressor, and air suspension compressor relay.

These tools and parts can range from a few hundred dollars to a few thousand dollars, depending on the make and model of your Range Rover and the tools and parts you choose to purchase.

You will need to factor in the cost of any necessary repairs to the air suspension system, such as replacing a faulty air compressor or air suspension compressor relay.

Overall, the cost of resetting the air suspension yourself can vary greatly and may be more cost-effective than taking your Range Rover to a garage or dealership.

Cost of resetting the air suspension at a dealership/garage

The cost of resetting the air suspension at a garage or dealership can vary depending on the specific issue and the make and model of your Range Rover.

On average, the cost can range from $500 to $1,500, but it can be higher if there are additional repairs or replacement parts needed.

It is important to note that cost also depends on the location of the garage/dealership, and some might charge more than others.

It is recommended to get a quote from multiple garages or dealerships before making a decision.

It is also important to consider the expertise and reputation of the garage/dealership before choosing to have the work done there.

Alternative problems if resetting the air suspension does not work

If resetting the air suspension on your Range Rover does not work, there could be several other possible causes.

1. Leaks in the air suspension system

Over time, the air suspension system on your Range Rover can develop leaks which can cause the system to lose pressure and not function properly.

This can be caused by damage to the airbags, leaks in the hoses or connections, or even damage to the compressor.

2. Faulty compressor

The compressor is responsible for pumping air into the airbags in the suspension system.

If the compressor is not working properly, it can cause the air suspension to lose pressure and not function correctly.

A failing compressor, clogs, or damage to the compressor can cause this.

3. Faulty air suspension control module

The air suspension control module is responsible for controlling the air suspension system.

If this module is faulty, it can cause the air suspension to malfunction.

This can be caused by damage to the module, corrosion, or a software malfunction.

4. Wiring issues

A complex network of wires controls the air suspension system on your Range Rover.

If these wires become damaged or corroded, it can cause the air suspension to malfunction.

This can be caused by exposure to the elements, age, or damage to the wires.

5. Failed PCM or BCM

The powertrain control module (PCM) or body control module (BCM) is responsible for controlling various systems in your Range Rover, including the air suspension system.

If these modules are faulty, it can cause the air suspension to malfunction.

This can be caused by damage to the module, corrosion, or a software malfunction.

It is important to note that these are just some possible causes for a malfunctioning air suspension system on your Range Rover.

A proper diagnosis by a professional mechanic is needed to identify the specific cause and repair the issue.

Summary

Knowing how to reset the air suspension on a Range Rover can be a simple task that can be done by yourself or at a dealership or garage.

Common causes of needing to reset the air suspension include leaks in the system, worn-out compressor or valve block, or malfunctioning ride height sensors.

The cost of resetting the air suspension can vary, potentially being the most cost-effective option.

However, if resetting the air suspension does not solve the issue, other potential causes could include a faulty air suspension relay, a problem with the Range Rover’s computer, or issues with the airlines or hoses.

Diagnosing and addressing any issues with the air suspension system is important to ensure a smooth and safe ride.

Last updated and verified on 6th September 2023