Finally gave it a try and see how it looks (when I brought my car there was no light on the buttons). I opened up the dash and plug in the spoiler ECU. Initially, it works. It even works when it hit the speed that it suppose to deploy. But when I stopped at the light, the warning lights goes on, and the button light started blinking...
I have checked the fuse, and that was fine. I have read bout how the spoiler could be stuck, so I've tried tugging on it while I got my brother to press the 'down' button. Still no go...
So... my final guess is maybe the motor itself? Does anyone know how to fix that or do I have to buy a new one? Where would I be able to find a motor for it?
Thanks!