CD Head Unit with Parking Sensor Input?

I am looking to replace my OEM Head Unit in my VW Polo 6R. However, I have parking sensors and on the OEM unit a small picture of a car (OPS) appears when reversing. Bars indicate how close you are to objects when reversing.





I spoke to Sony about a replacement HU and they said that currently they have no source unit capable of handling parking distance control input(s). They also advised that I would most probably lose the audible parking signal when changing from OEM to after market unit.





Any ideas?





Do such units exist that are compatible with the VW OPS system?





Thanks|||It's a Polo, you don't really need parking sensors on a car that size unless your driving is beyond bad.