I was also advised that if it does not transpire to be a warranty claim then... the charge would be applied!
Mine was £60 though and as the claims were valid it was not charged.
Mine was also in the original 3 years, not on VAG extended by one year so.
I will be doing the same for another couple of bits in the short term.
Usual shrinkage of the under bonnet heat shield, AC not working, squeaking R/H front strut and another go at my drivers thigh support disintegrating, so far!