It isn't the age of the radio that is the issue, it is your CAN Gateway module in the car.
If you can scan it with VCDS to provide the part number then that's the easiest way to tell.
I think if you have a 2006 car then you'll have the battery drain problem.
If you want a new module then there's a few on here that can replace/code it for you, Eddie-NL is the man to speak to about providing one should you need it.