connection seems to vary a lot. some times its almost instant and as soon as the car screen boots up car play shows. Other times it takes a while and I'm aleady driving (maybe 30 seconds to a minute) before carplay comes up. It seems like if I unlock the car open the door and wait a bit before starting (like if putting things into the car and what not) then it comes up as soon as the car is started. But this is not always the case.