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Air Suspension Compressor – the Heart of the System
When examining an air suspension system, you’ll often find an ECU (Electronic Control Unit) – the system’s brain.
By the same logic, the compressor is the heart of the air suspension system.
Even though it doesn’t run continuously, the compressor is crucial for maintaining pressure, comfort, and safety.
If it fails to perform properly, the entire air suspension system will lose functionality — and may eventually shut down.
At Luftfjädring24.se, we supply original and premium compressors from Arnott, WABCO, AMK, and Continental.
All our compressors are designed for Nordic conditions — resistant to cold, humidity, and road salt — and include a warranty, Swedish technical support, and fast delivery.
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How an Air Suspension Compressor Works
An air suspension compressor provides pressurized air to the system. It consists of an electric motor that drives a piston via a connecting rod.
As the piston moves, it compresses the air, which is then sent through the valve block and air lines to the air springs or pressure reservoir.
The compressor is controlled by a relay, which the ECU activates or deactivates depending on the vehicle’s load and level requirements.
Most compressors also include a drying filter (desiccant) that removes moisture and dirt from the air before it enters the system.
The absorbed moisture evaporates thanks to the compressor’s heat and is then released into the atmosphere.
This component is usually maintenance-free, but in older systems, the filter may require periodic replacement.
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Temperature & Durability
A compressor is designed for short cycles of pressure build-up, not continuous operation.
If the temperature exceeds 100 °C (212 °F), permanent damage can occur — typically when the compressor is forced to run constantly because of air leaks in the system.
To prevent this, many vehicles feature an external pressure tank, which helps regulate system pressure and reduce compressor duty cycles.
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Product Quality – Why Choose OES & OEM Compressors
Although many compressors look identical from the outside, there are significant differences inside.
We offer both OEM compressors and high-precision premium units built to meet strict reliability and performance standards:
- The rotor and piston are perfectly balanced to prevent vibration and reduce wear on piston rings and bearings.
- The motor windings feature a heat-resistant coating that prevents internal short circuits.
- The cylinder walls are CNC-machined and heat-treated for maximum hardness and smoothness.
- Bearings and shafts have a tolerance of only 0.01 mm, ensuring perfect alignment, quiet operation, and a long service life.
The result: compressors with minimal friction, low noise, and outstanding performance — even under extreme temperature variations.
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Secondary Damage & Important Inspections
A failed compressor is almost always a consequence of another fault within the air suspension system.
Whenever you replace a compressor, inspect the entire system carefully:
- Ensure the seal between the spring and strut is airtight.
- Check that the valve block and fittings are not leaking.
- Inspect Voss connectors and air lines for cracks or wear.
- Look for holes or damage on the air springs, including on the folded section that may hide small leaks.
A simple way to detect leaks is by spraying soapy water on suspect areas — bubbles will indicate escaping air.
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Common Symptoms of a Failing Compressor
Several signs indicate that your compressor is nearing failure:
- The vehicle takes longer to raise or lower.
- The compressor runs almost continuously.
- The dashboard displays air suspension error codes or warning lights.
- A burning smell or discolored labels and melted fittings are visible on the compressor.
If the compressor has overheated or burned out, always replace the relay as well.
The relay is a wear component that can stick in the “on” position, causing the compressor to run continuously — damaging both the relay and the compressor over time.
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Summary – Why the Compressor Matters
| Component | Function | Key Information |
|---|---|---|
| ECU (Control Unit) | The system’s brain | Controls pressure, height, and compressor operation |
| Compressor | The system’s heart | Builds air pressure — essential for comfort and safety |
| Dryer filter | System protection | Removes moisture and debris — usually maintenance-free |
| Valve block | Air distribution | ECU-controlled to regulate each spring |
| Pressure tank | Reduces load | Stores air to minimize compressor run time |
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Buy Your Air Suspension Compressor at Luftfjädring24.se
We offer original and OEM compressors for:
Audi, BMW, Mercedes-Benz, Range Rover, Volvo, Tesla, VW, Porsche, Jaguar, and more.
- Fast delivery across Sweden & the Nordic region
- Warranty and secure payment via PayPal, Swish, or card
- Expert Swedish technical support for workshops and private customers
Explore the full range here:
Air Suspension Compressors – Luftfjädring24.se
