Wat Does This Button Do?

[Gavin_LP]

I wish I had that button in my VL Executive

 

[warney]

its the nos button i think......my car one !!!!

 

[sando_3000]

The Button worked once now it doesnt do n e thing, and my drivers side window wont go down now, i've checked the relay n all the fuses n the wiring 2 the switches all seems 2 be in order, n e 1 experianced this problem? how did u rectify it?.
Cheers. Sando.