Radio not turning on
 

Just bought a second hand VW Polo at auction. I just bought a second hand. Volkswagen Polo 2012.VIN Number -> WVWZZZ6RZCU0. I would love to know what model it is exactly. Anyway the battery went dead I think, because the time is wrong. The main concern is that the radio does not power on. What is the procedure for unlocking the Radio? Or is there a more fundamental problem with the circuits? Is it dead? Any ideas how to check, what to look for? Alternatively what do you think of replacement units off Ebay? Do you have a recommended product?