Hi. I've had my 06 tC for 2 months now. I bought the Scion security system and had it installed at the dealership where I bought the car. When I went to take the car home, the turn signals, the passenger and driver's side windows, the lights on the dash board and the heating system did not work. I immediately too the car back to the dealer and they fixed it. No problems for a month until one night I go to get in my car and the same thing has happened again. This time, they put a high amp fuse in(went from 5 amp to 10 amp). On my way home from the dealership, the same thing happened-same options not working again. I took the car back and they rewired the entire circuit to spread it out so that the fuses would stop blowing. I have had the car back for less than a week and I am having the same exact problem. I read another post on yahoo about someone having the same kind of problem after the alarm was installed. Does anyone know if the 06's have electrical problems? I really would like to know what is going on with my car...