Audio alerts should be part of it too but that's as far as they will get. Some higher end car makers (Lexus i think?) vibrates the seat which is a great way to alert you.It looks like the parking sensors will show you a message when your rear gets too close to another car? It already shows a general warning, so I assume a proximity one will appear as well.
Do we know what's different with this model compared to something sold in Europe or North America?Features and specifications are subject to change depending on market and grade.