Air suspension system is an advanced automotive suspension system, its core role is to significantly improve the vehicle's driving quality and driving experience, more and more vehicles are beginning to use. The air suspension system is a complex system composed of various components in charge of different functions, and some failures will inevitably occur in use, so how do we know that the air suspension system has failed and how to check and repair it? The following content will discuss the failure of the air suspension system and how to cope.

Common causes of air suspension system failure

Common causes of vehicle air suspension system failure mainly include the following:

Air compressor failure: The air compressor is responsible for providing compressed air to the air suspension system and is the core component of the air suspension system. If the air compressor fails, the system may not work properly.

Leakage of connecting pipes: Leakage of connecting pipes in the air suspension system may cause the system to fail to work properly. This may be caused by poor sealing of the valve body and air suspension interface in the line.

Air spring leakage: The air spring is the core component of the air suspension system, and if it leaks, it may seriously affect the performance of the system. The cause of the leak may be a cracked rubber coil piston or a poor seal with the shock absorber.

Distribution valve body leaks: Distribution valve body leaks can cause the air suspension system to fail to adjust body height properly. This may be caused by a weak seal inside the gas pipe interface or valve body.

Skin aging: Over time, the skin of the air suspension system may lose elasticity due to aging and need to be replaced. In general, the service life of the skin is 3-5 years.

Movement oil leakage: If the movement of the air suspension system leaks oil, it may cause the system to not work properly. The movement is the core part of the air suspension shock absorption, and if an oil leak occurs, the repair value may be small.

Various sensor failures: Air suspension systems rely on a variety of sensors to monitor body height and vehicle status. If the sensor fails, the system may not adjust properly.

Pneumatic shock absorber damage: Pneumatic shock absorber damage may lead to unstable vehicle driving, affecting the ride comfort.

Failure of the control unit or system power circuit: Failure of the control unit or system power circuit of the air suspension system may also cause the system to fail to function properly.

Common faults and solutions of air suspension system

Air suspension system is a complex automotive suspension system, which regulates the suspension height and hardness of the vehicle by controlling the inflation and venting of the air spring to provide better comfort and passability. However, the air suspension system can also fail, affecting the performance and safety of the vehicle. Here are some common air suspension system failures and their solutions:

Air leakage problems: Air leakage is one of the most common problems in air suspension systems. When the system leaks, the suspension height of the vehicle will not be maintained, which will cause instability or excessive turbulence when the vehicle is driving.

1. For this problem, we can first check whether there is obvious damage or crack at the connection between the air bag and the air pipe. If so, replace the damaged parts in time.

2. Apply soapy water to the connection of the gas pipe and observe whether bubbles emerge to determine the location of air leakage. Once you find the leak, you can try to repair or replace the damaged part.

3. Regularly check and maintain the air suspension system to ensure that all seals and connections are in good condition to reduce the risk of air leakage.

Suspension height instability: Suspension height instability can be caused by air pressure regulator failure, sensor failure, or electrical problems. When the suspension height is unstable, the vehicle may be unbalanced before and after, and the suspension height is too high or too low.

1. We can check whether the air pressure regulating valve works normally. If the regulator is damaged, replace the damaged regulator.

2. Check whether the sensor of the suspension system is properly connected to ensure normal data transmission. Repair or replace faulty sensors if necessary.

3. Check the vehicle electrical system to ensure that the power supply and signal transmission of the air suspension system are normal. If electrical problems are found, they should be repaired in time.

4.Check whether the air suspension compressor is damaged. If the air suspension compressor is damaged, it cannot provide the necessary air pressure, resulting in the suspension system not working properly

Suspension noise problems: The suspension system may make noise during use, which may be caused by air spring wear, loose suspension components, or hydraulic valve failure. Suspension noise not only affects the driving experience, it can also signal a potential problem.

1. Check whether the air spring is worn or broken. If yes, replace the damaged air spring in time. Check the fastening of the suspension parts. Adjust or tighten them if they are loose.

2. Check whether the hydraulic valve is working properly, and replace the hydraulic valve if necessary.

3.Check whether the air suspension compressor is damaged, and the damage will also make noise

Little or no air in the bag: Little or no air in the bag may be caused by no air or low pressure of air suspension special reservoir, air line blockage or discount, horizontal height valve connection rod off or horizontal height valve damage. 1. The solution is to check the air source of the air suspension to ensure that the air pressure is sufficient.

2. Check whether the pipe is blocked or discounted, and repair or replace the faulty component in time.

How to determine the failure of the air suspension system?

When the air suspension system fails, it often shows some obvious symptoms. The following will show you how to determine the method of air suspension failure, to help you find and solve potential problems in time:

1、check the air spring and shock absorber

Air spring and shock absorber are the core components of air suspension system. When the vehicle appears bumpy, jumping or abnormal sound during driving, it is likely that the air spring and shock absorber are faulty. At this time, you can observe the appearance of the air spring and shock absorber to see whether there are problems such as air leakage and cracks. If a problem is found, replace the damaged part immediately.

2、check the control unit and sensor

The control unit and sensor are the control center and sensing organs of the air suspension system. When these components fail, it may lead to suspension system adjustment failure or misjudgment. When checking the control unit, check whether the circuit board is burned or the wiring harness is in poor contact. In terms of sensors, it is necessary to check whether there are problems such as sensor failure and signal interference. If there is a problem, the control unit and sensor need to be repaired or replaced

3、check the pipeline and valve components

Pipeline and valve components are the key components to control gas flow in air suspension system. When these components fail, it may cause gas flow to be blocked or regulation to fail. When checking pipes, check whether the pipes have air leakage, blockage, or aging. In terms of valve components, it should be checked whether there are problems such as spool stuck and lax sealing. If there is a problem, repair or replace the pipe and valve components.

4、check the air suspension compressor

Air suspension compressor is the core component of suspension system, when the air compressor fails, it will not be able to provide the necessary air pressure, which will lead to the suspension system can not work normally, vehicle stability will be reduced and safety risks. You can check whether the air compressor is working normally. If it is damaged, please be sure to repair or replace it in time.

5、check the height sensor and level sensor

Altitude sensor and level sensor are the key components for monitoring vehicle attitude in air suspension system. When these components fail, it may lead to loss of control or miscalculation of the suspension system. When checking the height sensor, you can pay attention to problems such as signal interference and loose wiring harnesses. As for the horizontal sensor, it should be checked whether there are problems such as signal distortion and drift. If there is a problem, the height sensor and level sensor need to be repaired or replaced.

6、check the power supply and fuse

Power supply and fuse are the key components to maintain normal power supply in air suspension system. When these components fail, it may lead to control failure or miscalculation of the suspension system. When checking the power supply, check whether the power supply voltage is unstable and the power cable is in poor contact. In terms of fuses, it should be checked whether there are problems such as fuse blowout and poor contact. If there is a problem, the power supply and fuse need to be repaired or replaced.

Can I continue driving after an air suspension failure?

After the air suspension system fails, the vehicle can still drive a distance, but it is not recommended to drive for a long time.

Feasibility to continue driving: After the failure of the air suspension system, the vehicle can still drive, because the suspension system is not completely disabled, but can not automatically adjust the height of the body according to the road conditions. This means that the vehicle can travel a certain distance on a normal smooth road.

Potential risks: Although the vehicle can be driven, there are some potential risks. For example, tires may suffer from off-wear, uneven hub forces, and unbalanced suspension, which can cause damage to other components and even affect the life of other undamaged air suspension.

Maintenance recommendations: If the air suspension system fails, it is recommended that timely maintenance is necessary to ensure driving safety and the stability of suspension performance.

Service life: The service life of the air suspension is generally about five years, but if it is often parked and not used, the service life will be shortened accordingly. If the driving road conditions are poor, the service life of the suspension will also be greatly reduced.

In addition, if the vehicle is equipped with an air suspension system, regular inspections and maintenance are recommended to extend its service life. At the same time, choosing a reliable car brand and model, and knowing the maintenance history and maintenance record of the vehicle at the time of purchase are also important measures to ensure the long-term stable operation of the air suspension system.

Air suspension system inspection cycle

The inspection cycle of the air suspension system usually depends on factors such as vehicle usage, mileage, and road conditions.

Inspection and cleaning: It is recommended to inspect and clean the air suspension system every 12 months, including checking the control valve, air pipe and connection site for air leakage, and timely replacement of aging or damaged seals.

Adjusting height and stiffness: Depending on vehicle usage and road conditions, the height and stiffness of the air suspension system should be checked and adjusted to maintain its optimal performance.

Records and maintenance records: After each check or maintenance, record detailed check and maintenance information, including check time, parts to be replaced, and for later reference.