I have a 2010 Sport and on the main center screen (not the tft screen) when I change the "text language" from the default "UK English" to "US" English, it works only until I turn off the vehicle. When I restart it, it reverts back to "UK English". All other settings (the tft screen, etc) stay just fine in my US preferences. The vehicles at the dealership all do the same thing. Any idea how to fix this?