Go on some dirt try slide a little and feel the ESP do it's thing. Turn it off and then try slide it. Be careful though as you'll slide out real quick esp if you're used to the ESP and don't know it. It makes it real hard to lose control. Low speed on dirt best way to test it. My ss Has it and has worked wild in the wet at speed on Bitumen. 06 Adventra has it and works great on dirt, but long trips on loose gravel it can warp ya discs as the ESP and IBD is constantly grabbing the brakes and they heat up n then warp. If you're ESP button is stuck off then there's a Fault somewhere. But that can be low battery voltage or even an O2 Sensor. My SS comes up at times 'Trac off' stuck on the dash and it slams Gears all from Low voltage or an O2 sensor!
