So you went to Infotainments Repair shop & they told you that ?
What happens when you press the NAV button?
Does the Map come up?
I don't know much about how the Infotainment System works, but i would guess that your Systems software is a version or more behind where it should be
your radio is basically a computer, the Air Card is a Daughter Board that is attached to the radios Motherboard by mostly soldered connections
check this out, before you change your Air Card inside of the radio
Check here to see if your Uconnect® system is due for a software update. Simply enter your vehicle identification number (VIN) to check for any updates.
www.driveuconnect.com
by the way, Infotainment.com has a repair service in Florida
not far from Orlando