Question, for the seat heater, was it the driver or one of the others, and do you have the base seats or recaros?I would look for the following items before your V goes out of B2B warranty:
-Sunroof rattle-loose bolts
-Heated seat elements
-Unusual tire wear (suspension issues)
-Peeling carbon fiber interior trim
This is all I can think of right now with some of the issues that I can remember others have had with the V3. It is probably a good idea to check these items yourself before taking it to the dealer.