Ride-height and suspension diagnosis
Air suspension faults can result from leaking air springs, lines, valve blocks, compressors, height sensors or electrical controls. A vehicle sagging after parking may have an air leak; a vehicle unable to rise may have a compressor or control problem. Measure individual corner heights before and after parking, review pressure and sensor data, and leak-test the correct circuits. AIRMATIC and Active Body Control are not interchangeable systems and require different procedures.
Repair decisions and verification
Confirm ride-height calibration, compressor duty cycle and stable vehicle height after an extended parked period.
Equipped E-Class models may sit low overnight, display a suspension message or ride unevenly. Not every E-Class has air suspension.
How the problem should be evaluated
Confirm equipment, measure ride-height changes, inspect air springs and lines for leakage, review compressor performance and read chassis faults.
Why the model and engine matter: Mechanical springs, rear self-leveling and full air-suspension configurations require different checks.
If you are experiencing this issue, contact Mich’s Foreign Cars in Hickory, NC at 828-324-6012. Provide the model, year, engine, warning text and when the symptoms occur so our service team can discuss an appropriate diagnostic visit.