Re: turn off text message notification
Get yourself an iPhone. The only thing mine does with UConect is stream music via bluetooth or plug into USB and allow for hands free calling. I don't get alerts when I get a text message except from my phone. I say this tongue in cheek of course.
You might want to look at the settings on UConnect once the phone is connected I would think there's a way to turn off the MAP protocol. If not, you could delete your device from UConnect and blow away the Uconnect connection on your phone then add it again, this time do not accept the MAP request.