No red master key with VW s cars always come [new] with 2 key fobs, i would go to a dealer & get a new key fob, if the other key is not with the sale then no problem as you can remove the access yourself using your other key, i am nearly sure yopu can program the keys to accept the car details yourself!! I could with both the MK4 & MK5 golfs we have owned.
Del
*Edit* my VW were 2002 [new] onwards