Why Is My Air Suspension Light On

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Why Is My Air Suspension Light On?


Having an air suspension system in your vehicle can provide a smoother and more comfortable ride. However, like any other component in your vehicle’s system, it can experience issues, resulting in the air suspension light turning on. When this light illuminates on your dashboard, it is essential to address the problem promptly to prevent further damage and maintain optimal driving conditions.

Common Causes of Air Suspension Light Illumination

1. Low Air Pressure: One of the primary reasons for the air suspension light coming on is low air pressure in the system. This occurs when there is a leak in the air suspension system or when the air compressor is not functioning correctly. Low air pressure can lead to a bumpy ride and poor handling.

2. Faulty Height Sensor: The height sensor is responsible for measuring the ride height of the vehicle and adjusting the air suspension system accordingly. If the sensor malfunctions or becomes misaligned, it may result in an incorrect reading, causing the air suspension light to turn on. This issue can affect the vehicle’s stability and ride comfort.

3. Failed Air Compressor: The air compressor is responsible for pumping air into the air suspension system to maintain the proper ride height. If the compressor fails, it may not supply enough air to the system, resulting in a drop in ride height and the illumination of the air suspension light.

4. Damaged Air Springs or Struts: The air springs or struts support the weight of the vehicle and absorb road shocks. Over time, these components can deteriorate or become damaged due to wear and tear or driving conditions. If the air springs or struts fail, it can cause the air suspension light to come on, indicating a need for repair or replacement.

Steps to Diagnose the Issue

When the air suspension light comes on, it is essential to take the following steps to diagnose and address the problem:

1. Check the Air Pressure

The first step is to check the air pressure in the system. Use a tire pressure gauge to measure the pressure in each air spring. Compare the readings to the manufacturer’s specifications. If the pressure is below the recommended level, it indicates a leak or compressor issue. In such cases, it is advisable to seek professional help for a thorough inspection and repair.

2. Inspect the Height Sensors

Inspect the height sensors for any visible damage or misalignment. Ensure that they are securely attached and free from any dirt or debris. If there are no visible issues, it might be necessary to recalibrate or replace the height sensors. It’s recommended to consult a certified mechanic for this task.

3. Test the Air Compressor

To test the air compressor, start the vehicle and observe if the compressor engages when the air suspension is activated. If you do not hear the compressor running, it may indicate a fault in the compressor or its electrical components. A professional evaluation is recommended to diagnose the problem accurately.

4. Inspect the Air Springs or Struts

Visually inspect the air springs or struts for any signs of damage, such as cracks, leaks, or sagging. If you notice any of these issues, it is crucial to have them inspected and replaced if necessary, as they can impact the overall performance and safety of your vehicle.

Preventive Measures

To minimize the chances of the air suspension light coming on, consider implementing the following preventive measures:

1. Regular Maintenance Checks

Perform regular maintenance checks on your air suspension system. This includes inspecting for leaks, checking the air pressure, and lubricating components as recommended by the manufacturer. By staying proactive, you can identify and address potential problems before they escalate.

2. Drive with Caution

Avoid driving over potholes, speed bumps, and rough terrains at high speeds. Excessive strain on the air suspension system can lead to premature wear and damage. Drive cautiously to minimize the risk of encountering issues.

3. Avoid Overloading

Do not exceed the maximum weight capacity recommended by the vehicle manufacturer. Overloading the vehicle can put excessive strain on the air suspension system, leading to potential damage and a higher risk of the air suspension light coming on.

4. Seek Professional Help

If you are unsure about any aspect of your vehicle’s air suspension system or if the air suspension light is on, it is advisable to seek professional help. Certified mechanics have the knowledge, experience, and specialized tools to diagnose and repair air suspension issues effectively.


The air suspension light coming on is a signal that there may be an issue with your vehicle’s air suspension system. It is crucial to address the problem promptly to ensure optimal driving conditions, safety, and comfort. By understanding the common causes and taking preventive measures, you can minimize the risk of encountering air suspension problems in the future.



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