Don't despair. I had the same problem, trying hard to recall what I did to fix it. Don't have the car any more, but I think there was another set of menu options - something like holding the band or some other button down whilst powering on - and I had to tell it to be Europe not USA and then the RDS could be enabled in the normal way. I think the 'steps' when tuning on the AM band are different on the US setting as well, so maybe see if they are looking strange - that would confirm that you have somehow de-europed it. I must admit it is all a bit hazy now but keep trying. It did work in the end. The manual might have something on regional settings for the radio.