OK, found more information on what exactly, ASC does for the car. It appears the brakes may play a more active role when the car over-accelerates causing possible fish tailing. I don't believe this car has the kind of power to worry about fish tailing, but then I'm not a mercedes engineer, either.

https://www.mercedes-benz-bus.com/en_GB/models/tourismo-rhd/safety/safe-driving.html