Not exactly sure what you mean by reflash of all electronics but its possibly just a coding issue.
Also a bit of a contradiction which confuses things as the RNS only has a single CD slot, not a 6 disk stacker.
If your Columbus unit has navigation, then this is an RNS510.
If you have a colour screen and 6 disk integrated, but no navigation, then this is an RCD500.
Either way if you just need to check the aux coding for the unit get hold of someone with VCDS and look it.
RCD will be
RNS510 coding is like this:
Bookmarks