I work with a large car retailer here in Virginia, and I sold a gentleman a 2005 Cadillac STS recently. During the sale, we noticed that the factory remote start system was not working through the key faub. I read through the owner's manual, and even followed the prompts to turn on the remote start system through the personalization settings. When we tried again, we hit the lock button, then immediately pressed and held the remote start button until the parking lights blinked. According to the manual, at this point, the car should start. It does not. Does anyone have any additional advice. This gentleman would like to have his starter figured out by the summer. Thanks in advance!