There is one button marked ESP where the normal TCS button is. It turns both on and off. I have have tried it on and off on the same corners, gears etc. Holds the car in position better. I want to know if it is still worth fitting a strut brace when you have ESP? I don't drive really hard myself (too old) but I like the better handling option. I got ESP as I had read it improves control on snow etc. and lets you get around where other FWDs might struggle 