Yes this happens to be me once in a while as well. I've found if you just turn the car off, lock it, wait 30 seconds then unlock and turn it back on, it works fine.Reboot. ;-) Turn off the ignition, go have a cup of coffee and come back after 10-15 minutes, restart the engine. Does audio work? If it does, something didn't "initialize" properly - happens occasionally with these cars. Allowing all modules to shut off and then restarting usually solves it.