Hi, i am new to this so please bear with me,i have an audi a4 tdi 1996 it did not have a remote locking key fob when i bought it however the key always seemed stiff when locking and people i have spoken to say it should have a remote locking system so i purchesed a fob from ebay for an a4,my question is do i have to take it to my local audi dealer to have it programmed or can i diy it i would be gratful for any help