I bought a used 04, and sometimes the car will not start...the only thing different is the key on the dash panel will flash really fast. I have been told that it has to do with the factory alarm system. It has left me stranded many times. I usually just have to sit and wait and mess with the locks, doors, etc. until it decides to start. Can someone please tell what causes this or how to fix it or better yet disarm the alarm!! I don have a key fob as it didn't come with one!!! This is really annoying to me!!!