I've been looking into getting an SLK, and have been to many dealerships. I get a different story about the tele aid system each time I stop by the dealership. Does it act as a theft deterrent similar to lojack? Has anyone had a situation where tele aid has found their stolen car? Do I need a system like lojack. People have told me the security feature built into the Tele Aid system only works if there is cell service or will not work if the antenna on the back is removed. Any ideas, thoughts or expericence with the Tele Aid system?