That's one where the Erwin manuals come in use to double check what the service counter is saying against what the manufacturer says. £7-50 per hour to access. Without looking not sure how much they have on the Altea, you have to pay up and look. Details of accessing here:
To answer a lot of the technical questions of the Ateca
the full workshop manuals are available by an hourly or daily rate for download as PDF files. You can browse but can't download if you don't pay. https://erwin.seat.com/erwin/showHome.do 7 Euro's + VAT gives you the ability to download in...
That information would be in the maintenance PDF. Erwin is the official documentation branch of VAG used by dealers, independent workshops and DIY enthusiasts.
You download the PDFs in one swoop. May take a couple of hours. Equivalent of Haynes manuals but much more detailed. That's another source.