I am not judging your knowledge of teh car, but please tell us: is the light on the dash on or off? If the light is on solid, that means that you have disabled stability control. If the light is off, stability control is enabled; the light will come on intermitently whenever teh system intervenes.
Now that the basics are out of teh way, here is the good stuff: simply pressing the DSC button once deactivates DSC (dynamic stability control), but leaves DTC (dynamic traction control) active. To deactivae DSC and DTC:
Pres teh DSC button as long as you need to until the indicator lamp and the brake warning lamp light up (both yellow), but no longer than 10 seconds.