Renault Master Air Suspension Problems

Key Takeaways

  • Regularly inspect your Renault Master’s air suspension system for signs of wear and tear to prevent potential problems.
  • When troubleshooting the air suspension compressor, check for leaks, worn-out components, and electrical issues to ensure proper functionality.
  • Address rear suspension issues in ex-ambulance Renault Master vehicles promptly to maintain stability and safety on the road.
  • Keep an ear out for unusual noises in the suspension and steering system, as they could indicate underlying issues that need to be resolved.
  • Consider the pros and cons of air suspension versus spring suspension when choosing or maintaining your Renault Master campervan for optimal performance.
  • Prioritize timely maintenance and repairs for the air suspension unit to avoid costly breakdowns and ensure a smooth driving experience.

Understanding the Renault Master Air Suspension System

Benefits of the Renault Master Air Suspension System

The Renault Master air suspension system offers several advantages. Firstly, it provides a smoother and more comfortable ride for passengers and drivers. This is especially beneficial when driving over uneven or bumpy roads, as the air suspension absorbs shocks effectively. The system automatically adjusts to varying loads, ensuring that the vehicle maintains an optimal height regardless of its cargo. For example, when carrying heavy items in the rear of the vehicle, the air suspension compensates by raising the back end to maintain stability.

Moreover, this automatic adjustment also enhances stability and handling while driving. The air suspension systems work to keep the vehicle level and well-balanced at all times. It prevents excessive swaying during cornering or sudden movements on rough terrain. This not only improves comfort but also contributes to overall safety on the road.

Challenges with Renault Master Air Suspension

Despite its benefits, there are some common problems associated with Renault Master air suspension systems, such as potential leaks in the air springs or issues with electronic components controlling the system’s operation. These can lead to uneven ride heights or even complete failure of certain aspects of the system.

Due to its complex nature compared to traditional coil spring suspensions, repairing faults within an air suspension system can be more costly and time-consuming.

Common Problems with Renault Master Air Suspension

Air Leaks

Air leaks are a common problem in the Renault Master air suspension system. These leaks can occur in the air springs, air lines, or fittings, leading to a loss of air pressure and causing the vehicle to sag or ride unevenly. When there’s an air leak, the compressor has to work harder to maintain the correct pressure, which can lead to premature wear and tear on the components.

The presence of an air leak can often be identified by a visibly lower ride height on one side of the vehicle compared to the other. If you hear hissing noises coming from under your car when it’s parked or during operation, this could indicate an air leak in the suspension system.

Faulty Compressor

Another problem that frequently arises with Renault Master’s air suspension is a faulty compressor. The compressor is responsible for pumping and maintaining pressurized air within the system. A malfunctioning compressor may fail to adequately inflate or maintain proper pressure in the suspension components, resulting in reduced ride comfort and compromised handling.

A failing compressor might trigger warning lights on your dashboard indicating issues with “suspension” or “air suspension.” If you notice that your vehicle takes longer than usual to lift itself when starting up or exhibits excessive bouncing over bumps, it could be due to a faulty compressor needing attention.

Troubleshooting the Air Suspension Compressor in Renault Master

Electrical Connections

When troubleshooting Renault Master air suspension problems, start by checking for loose or damaged electrical connections. Faulty connections can disrupt the power supply to the compressor motor, affecting its performance. Look for any frayed wires or disconnected plugs that may be impeding the flow of electricity.

Inspecting the compressor’s intake and exhaust valves is crucial. Any signs of damage or blockage could lead to air pressure irregularities within the system, causing issues with the air suspension. Debris or particles obstructing these valves can hinder the smooth operation of the pump, leading to potential malfunctions.

Relay and Fuse

Ensure that both the relay and fuse associated with the air suspension compressor are functioning properly during troubleshooting. A faulty relay can prevent power from reaching the compressor motor, while a blown fuse can disrupt its operation entirely. These components play a vital role in regulating power distribution to maintain optimal performance.

Addressing Renault Master Ex Ambulance Rear Suspension Issues

Common Causes of Suspension Issues

Ex-ambulance Renault Masters often face rear suspension problems due to the heavy loads they carry and frequent use. The repeated strain from transporting patients and medical equipment can lead to wear and tear on the rear suspension components. This can result in a compromised ride quality, increased body roll, or even sagging at the back of the vehicle.

To address these issues, owners of ex-ambulance Renault Masters should consider upgrading to heavy-duty rear springs. These specially designed springs are built to withstand heavier loads and provide better support for vehicles that have been utilized as ambulances. By installing heavy-duty rear springs, owners can effectively mitigate the impact of constant heavy loads on their vehicle’s suspension system.

Importance of Regular Maintenance

Regular maintenance and inspections play a crucial role in preventing rear suspension issues in ex-ambulance Renault Masters. Periodic checks by experienced mechanics can help identify any signs of wear or damage to the suspension components early on, allowing for timely repairs or replacements. Maintaining proper air pressure in the tires is essential for preserving the integrity of the suspension system.

Resolving Noise in Renault Master Suspension and Steering

Identifying the Issue

One common complaint is the presence of noise in the suspension and steering. This issue can often be attributed to worn-out bearing points such as bushings or ball joints. These components are crucial for maintaining a smooth and quiet ride, but over time, they can deteriorate, leading to unwanted noises while driving. Loose or damaged parts like sway bar links can also contribute to the knocking sounds experienced by Renault Master owners.

One way to identify the source of these noises is by thoroughly inspecting the various components of the suspension and steering system. By checking for any signs of wear, damage, or looseness in these areas, you can pinpoint which specific part might be causing the problem. Furthermore, seeking professional advice from a mechanic who has experience with Renault Master vehicles can provide valuable insights into diagnosing and resolving these issues effectively.

Lubrication as a Solution

Proper lubrication plays a significant role in reducing noise associated with steering and suspension systems. Applying grease or lubricant to key components such as bushings and ball joints helps minimize friction and dampen vibrations that could lead to annoying sounds while driving. Regular maintenance involving thorough inspection and lubrication of these parts can significantly contribute to a quieter driving experience for Renault Master owners.

Fixing the Renault Master Air Suspension Unit

Inspect Air Lines

When fixing Renault Master air suspension problems, it’s crucial to start by inspecting all air lines for leaks or damage. Look for any visible wear, cracks, or holes along the length of the air lines in the vehicle’s suspension system. If any issues are detected, they should be promptly addressed to prevent further complications.

Replacing Worn-out Parts
Consider replacing worn-out air springs or shock absorbers to restore the functionality of the air suspension unit in your Renault Master. Over time, these components can deteriorate and lead to a decline in performance. By swapping them out with new parts, you can ensure that your vehicle’s air suspension operates optimally.

Calibration and Adjustment

Proper calibration and adjustment of the air suspension system are essential after addressing any issues with your Renault Master’s air suspension unit. This step is critical as it ensures that all components work together harmoniously to provide a smooth and stable ride quality. Seek professional assistance if needed to accurately calibrate and adjust the system for optimal performance.

Comparison of Air vs Spring Suspension in Renault Master Campervans

Comfort and Adjustability

The air suspension in Renault Master campervans provides a more comfortable ride compared to the stock springs. The air suspension system allows for adjustable pressure, which means that drivers can tailor the ride quality based on their preferences or specific road conditions. For instance, when driving on rough terrain, increasing the air pressure can enhance stability and comfort.

On the other hand, the stock springs in Renault Master campervans are generally more affordable than air suspension systems. While they may not offer the same level of adjustability as air suspension, some drivers appreciate their simplicity and reliability. Maintenance of spring suspensions is also typically easier and less costly compared to air suspensions.

Personal Preferences and Needs

When choosing between air and spring suspension for Renault Master campervans, it ultimately boils down to personal preferences and specific needs. If a driver prioritises a smooth and customisable ride experience with enhanced comfort levels, then an air suspension might be the ideal choice. Conversely, if cost-effectiveness and ease of maintenance are key considerations, sticking with conventional stock springs could be preferable.


You’ve now gained a comprehensive understanding of the Renault Master air suspension system, common problems, troubleshooting techniques, and solutions. Whether it’s addressing rear suspension issues in ex-ambulance models or resolving noise and steering concerns, you’re well-equipped to tackle these challenges head-on. The comparison between air and spring suspension in Renault Master campervans has also provided valuable insights for making informed decisions.

Now it’s time to roll up your sleeves and put this knowledge into action. Don’t let air suspension problems hold you back from enjoying the smooth ride and stability you deserve. Take charge of your Renault Master’s air suspension system using the tips and techniques you’ve learned, and get ready to hit the road with confidence.