The remote that comes with the TV has a menu button, Then you need to scroll down to the audio menu and then to the EQ. Vizio doesn't have a remote code that will take you directly to the EQ menu.
If you got a remote that would allow you to create a macro that will combine each individual button push into one button that would work.
https/support.myharmony.com/en-us/creating-button-sequences
https
/www.amazon.com/Universal-Control-MX-450-Programmable-Editing/dp/B001HKLA60.
http
/www.myuremote.com/website/how-to-call-apps-urls-and-macros-within-myuremote/
https
/www.irdroid.com/2013/12/irdroid-macro-remote/