Thanks Lucas - weird that the dealer is mentioning that to me then.

I had a look via the VW service scheduling website and for my car it says:

*Additional requirements* Renew toothed belt, tensioner and roller - every 7 years or 105,000km

Volkswagen recommends renewing your toothed belt, tensioner and roller every 7 years or 105,000km for this model. If you are due for this service, please select it from the "Individual services" section.

Could these be the components that the dealer was meant to be referring to?

Thanks!