Wow, my head really hurts after trawling through the net to understand this system!
I've recently bought a 2005 GTI, which has an RNS 510 unit. I can't access the secret menu which gives the current SW and HW version.
Can someone please tell me the following;
1. Was an RNS 510 available for a 2005 GTI from factory as an option?
2. Was this unit fitted aftermarket by one of the previous owners?
3. Is there any way to determine the current HW / SW version without enabling this menu through VCDS?
4. Are there any tell tale functions that my unit may have, which will show which year or version it is?
Also, I was thinking that if this unit has been installed in my car and I presently don't suffer with battery drain, am I right in assuming that the canbus gateway has been replaced?
Thanks in earnest.