What does the AAS fault warning in Mercedes-Benz mean?
2 Answers
Mercedes-Benz reporting an AAS fault indicates an issue with the air suspension system. Meaning of AAS: AAS stands for Adjustable Air Suspension control system. When the AAS warning appears on the vehicle, it refers to the Adjustable Air Suspension control system. It is recommended to first read the fault codes and then inspect the vehicle's suspension system for specific causes. Possible reasons for AAS fault warning: When parking, after releasing the brake pedal, the Starting Assist System (AAS) can maintain the braking effect for up to 1.5 seconds to prevent the vehicle from rolling back on slopes. There are two possible reasons triggering the AAS warning light on the instrument panel: Distance Control System malfunction; or auxiliary battery failure.
When the Mercedes reports an AAS fault, I feel completely tense because AAS refers to a problem with the Adaptive Air Suspension system. This light came on in my car, causing unstable vehicle height and making the ride as bumpy as horseback riding. Common causes include sensor false alarms or airbag leaks, possibly due to aging seals or dirt blockages. If not addressed promptly, the suspension may sag, damaging tires or the chassis. I was terrified and immediately drove to the repair shop, where the technician diagnosed a faulty air pressure pump, costing thousands to fix. For daily prevention, I recommend avoiding rough roads and washing the car while avoiding the suspension area. When the fault light comes on, act immediately—don’t delay, safety first.
