A:Answer1) a fob comes with it
2) i don't remember the exact number but the fob remote start is far. Phone is 10m
3) technically yes if they know what they are doing
A:AnswerI wouldn't see why not but i would say call your local best buy that installs them and talk to the service team. They should be able to tell you in a second.
A:AnswerAs long as that output was connected during installation, the app can do it. However, not all shops include trunk release in their basic installation package. Sounds like your shop did not include that connection in their basic install.