toyota link is a free service for the first 3 years and since the presara hasn`t been around long enough, they havn`t set an annual fee yet. there are 2 buttons , one is a distress mode and the other is simply like a direct phone link to a service centre. they can track your position via satelite technology, this is very handy when your car is stolen, they ring your mobile if the vehicle is broken into then notify the police , track the vehicle till police are on scene and then immobilize the engine. how cool is that. that is what sleep mode is for. you contact toyota link via your link button , lock your car when you`ve finished driving for the night . any entry into the car during the night is detected by toyota link and you get a phone call to check that everythings a ok. how smooth is the ride and handles quite well for a prestige car eh