Assuming you have a recent model of the ML63 AMG, that would mean you actually DON'T HAVE ABC. You do have hydraulics in your suspension, it's called ACTIVE CURVE SYSTEM, but they aren't hydraulic struts, they're actually a simpler system (good thing) that you have a hydraulic pump on your anti-roll bars. What does ACTIVE CURVE SYSTEM do? When your car turns, there's a body roll motion, this body roll motion is stopped by the anti-roll bar, a bar of metal that is on each axle. Your car basically has a motor that twists this bar of metal in the opposite direction when it naturally twists during a curve.
You've got AIRMATIC struts and ADAPTIVE DAMPING SYSTEM (PLUS); the AIRMATIC struts are struts filled with air. The ADAPTIVE DAMPING SYSTEM (PLUS) is where there are multiple air chambers within the strut to give you firmer and softer settings for the suspension.
You've got one super-impressive vehicle. I wanted an ML63 AMG or GL63 AMG after i drove a GL63 AMG company car for a little while. Very impressive car, slightly smallish brakes for a car of the GL63 AMG size.