Ok my security light comes on too often now, at first it just started coming on but it was rare but now it comes on really often and not allowing me to turn the car most of the time or while im driving, what could it be, i read that it could be the ignition switch, how much does come out to be? how hard is it to replace, would i need a new key?

 

Try a spare key or a new key first. The pellet may be bad or the contacts worn out. Also try to spray contact cleaner, from Radio Shack, into the key hole & work the key in & out a few times. Do not use other cleaners as they may make things worse.