[YuraB]

You can do it, but it is not going to be easy. You have to reprogram the FOB, you are going to have to find where to reprogram it, and you will probably run in to some other problems. After all that, you will probably wish that you just bought an alarm that can do the exact same stuff (no key engine start, car knows when your near and unlocks/lock doors/ignition disabled). Also, you will have programable buttons that with a good alarm installer, you can hook to pretty much anything, no matter how random and unnecessary it is. Some of the new alarms for cars are very cool looking too if looks are a priority for you.