When the immobiliser set itself on my 200 coupe I couldn't start my car. Couldn't figure out if it was the Rover alarm or the after market one. Turned out to be the alarm fuse had blown so just replaced it. You can however start the car with a simple hot wire by using a short length of wire but I'm not sure the internet is the place to be stating exactly how this is done. It would help someone in trouble but would be a potential step by step guide on how to steal a car for any would be theives.