Hi,

I'm Filip, currently I drive 2018 Octavia RS 2.0 TDI with CUNA engine.

It is my first VAG, so I hope that I will find good answers here.

Best regards

Hi, welcome.

The 'Owner's Manual' is a good place to learn from too, if you read it and refer to it you can sometimes know more about your car than many other long term owners and the model and it can help prevent unnecessary hassle and costs particularly to Dealerships, garages, mechanics and auto-electricians. There a free VWŠkoda website with the manuals. - https://www.skoda-auto.com/apps/manuals/Models

Also of course is the 'Skoda Octavia Mk3 (2013 - 2020)' forum. - https://www.briskoda.net/forums/forum/235-skoda-octavia-mk3-2013-2020/

My main advice is to keep the 12v battery in a a reasonably good state of charge by driving the car enough and far enough and/or occasional (as required) preventative charging with an appropriate battery charger maintainer following the instructions for the charger maintainer and what's in the car's 'Owner's manual'. Even if the headlights seem bright enough and the engine starts easily (that's about the last thing to fail) the battery could be too in charge for the computer systems that will then throw up all sorts of unexpected issues, warning and unseen error codes, loads of threads and posts all over this site and elsewhere about this on all stop/start VW models.

Good luck.