Mercedes-Benz W220 Airmatic warning and "visit workshop" message
W220 Airmatic "visit workshop" message, what causes it?
The message is common and only says that the system has detected some fault. The cause can be, for example, a bad connector or contact, an air leak or a sensor fault. Read the fault codes with a diagnostic tool before replacing parts.
Where should I start looking when the Airmatic message appears?
First check the condition of the battery, because low voltage can cause many fault messages at once. Then check the connectors and look for leaks in the air suspension valve unit and the air springs by applying soapy water and watching for bubbles.
W220 Airmatic shows "vehicle too low" or "stop", what should be checked?
The message means the car is too low and should not be driven. The cause can be the compressor, its relay, the air springs, the height sensors or the control unit. The plastic at the top of the air spring can also break at the air hose. A compressor fault can be suspected if the diagnostic tool shows too low a pressure between the compressor and the manifold. Air suspension is pressurised and affects driving safety, so leave opening the lines and replacing air springs to a workshop.