Mercedes AirMatic suspension problems
The Mercedes Benz AirMatic suspension offers ultra-smooth handling, a flexible ride height and self-leveling capabilities that normal suspension cannot. Using an electronically controlled airbag, AirMatic can adjust each air spring in as little as 50 milliseconds and will change based on road conditions and driving style.
AirMatic suspension offers big improvements over conventional systems, but the added complexity means more things can go wrong. In this article, we will go over the most common problems and symptoms that Mercedes owners experience with the AirMatic suspension.
How does AirMatic work?
The AirMatic suspension uses a system of air bags, sensors, hoses and an air compressor. The system uses a valve block to distribute air to the struts and a reservoir tank to reduce reliance on the air compressor. Level sensors transmit axle height to the AirMatic system, while acceleration sensors calculate vertical and horizontal acceleration.
Together, these components allow AirMatic to make on-the-fly adjustments to the suspension based on road conditions, vehicle speed and driving style.
Symptoms of AirMatic suspension problems
Failed or failing AirMatic systems can cause a number of problems. Your vehicle may lower to the ground or sink into a particular corner. You may also notice a change in the way your vehicle drives or hear new suspension noises.
Common problems with AirMatic suspension
There is compensation for all the suspension control that comes with AirMatic. The system has many more components than traditional suspension, which opens up more opportunities for parts to fail.
Air leaks
Most problems that arise with air suspension systems like AirMatic involve an air leak.
Air strut leaks
Over time, suspension airbags can wear out and begin to leak. Depending on the severity, the vehicle may have trouble keeping the bag full of air. This can cause one corner of the car to “sag” or sit noticeably lower than the other corners.
Leaks in the air hoses
Another common point of failure is the air hoses that run from the valve block to the air strut. A leaking air hose will produce symptoms similar to a leak in the air struts.
Valve block failure/leaking
The air distribution block can also leak and fail. When this happens, it will usually affect one corner of the vehicle.
Compressor failure
Usually the air compressor will fail due to a leak somewhere else in the system. The compressor can burn out trying to maintain pressure in a leaking system.
Driving height sensors
Ride height sensors can become damaged over time, causing incorrect readings.
Having problems with your Mercedes air suspension? Come to Alex’s Autohaus!
Alex’s Autohaus is Utah’s first independent European auto repair facility. Our qualified technicians have the tools, training and knowledge to service and repair European vehicles, including Mercedes Benz. If your car is sinking due to a failing air suspension component, give us a call or schedule an appointment online today and let us help you get your car running as it should!
