One of the reasons why the Mercedes S Class is superior to other vehicles is because of the air suspension system designed by the engineers. Mercedes S Class owners no longer have to worry about rough roads because the air suspension system in the vehicle helps cushion the impact of the road on the car.

A compressor in a Mercedes S Class car releases air into flexible bellows, which are normally constructed from a textile-reinforced kind of rubber. The air suspension system was designed to replace the use of coil spring system with the use of airbags made from rubber and polyurethane. The airbags are expanded to a certain pressure by a compressor making it behave like springs.

The purpose of the air suspensions system is the same as the other types of suspension. The system was designed to support the vehicle and prevent it from being negatively impacted by bumpy roadways and uneven terrain.

Components of the Air Suspension System

  • Air struts: Coupled with the air spring and a shock absorber, the air struts provide structural support for the suspension system. The shock absorbers help to dampen the spring’s motions.
  • Air springs: It functions as the coil spring and is a bladder made of rubber. Using the ability of air to compress and that of rubber to vibrate, the air spring raises or lowers the vehicle.
  • Air suspension solenoid valve blocks: The valve blocks distribute air from the air compressors to the air struts and/or air springs.
  • Air suspension compressors: They are electric air pumps that supply the compressed air into a reservoir or the flexible air bladders found in the air springs, struts, and air-assisted shocks.
  • Other components include the air suspension control module, height sensors, air reservoir, air plumbing line, and air spring bags (or bellows.)

Common Causes of the Air Suspension System Failure

Malfunctioning of any of the following components of the air suspensions system may lead to failure of the entire system.

  • Damage to the air spring: This is one of the most common causes of failure. The Air spring may become worn out over time due to the repeated compression/decompression cycles of the air spring. Also, weathering can cause cracks in the rubber bellows.
  • Malfunctioning air dryer: The work of this is to filter out moisture in the air from entering the sensitive components. If the dryer has a problem, the unwanted moisture would enter the metal parts and cause corrosion. This would eventually cause the air to leak or a fault in the electrical system.
  • Compressor failure: Wearing or failure of the compressor would prevent the airbags from staying inflated. This would cause further damage to the vehicle from bumpy rides. The airbag may wear out as the compressor tries to fill up the bag.
  • Holes in the air lines: Small air pipes connect the airbags to all other components of the air suspensions system. These Iines may come in contact with and rub other parts of the vehicle and cause a tear which will lead to a leak. The leak could be a sag at one corner or in the entire air suspension system if the leak occurs close to the reservoir.

The Benz Shop: Resolving Air Suspension Problems in Your Mercedes S Class

At The Benz Shop, Mercedes S Class Air Suspension Warning our expert mechanics have years of experience with Mercedes models. All our technicians graduated from the Universal Technical Institute (UTI) and have undergone extensive training in repairing Mercedes vehicles and luxury motor vehicles (LMV). We focus only on Mercedes, and as such, we are current with technologies and equipment for the brand.

We have our shop in Glendale, AZ from which we provide repair service to the residents of Tempe, Scottsdale, Chandler, and Paradise Valley. Call or visit our shop today to learn more about our services or to schedule your next appointment!

* Mercedes-Benz S-Class Car image credit goes to: bodrumsurf.

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