I'm pretty disgusted with BL myself. I don't have Nav and I have MT so it's not that great anyway but I figured I could use it to track maintenance and whatnot.
At 2500 miles, I get a note on my screen that maintenance is required and I should hit the BL button. I hit the BL button and it goes through some automated setup and hangs up on me. I go to the website and the mileage is all wrong (which is weird- the app on my phone is spot on). So I shrug it off.
at 5k miles I get the note again so I hit the BL button. I get an automated message that I should... go to the website... wtf? So I go to the website which STILL says I'm at 1400 miles and have no service needed.
That being said, I can lock and unlock the car with my phone... so there's that.