I answered on the other thread. If you want to treat yourself to the official manuals details here aka Erwin:
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://seat.erwin-
store.com/erwin/showHome.do Circa 7 Euro's + VAT gives you the ability to...
www.seatcupra.net
You buy the air time and download as pdfs... You'll get the whole lot in about 2 hours of time. About £10 like having your own Haynes manual for the model.
On the basis that it's the
Ibiza and the Arona is the same. The 2018 Arona user manual has this:
View attachment 38639
The A.C. fuse is probably the yellow one or blue. The engine compartment ones are trouble if you randomly pull them.