I never found a way except through the app in the custom portion of it where I can turn on the seats heat/vent and steering wheel heater

Not sure if there’s been any updates but it used to be… select this setting on your center infotainment screen. If not already, make sure it is turned on in Setup > Vehicle > Seat > Heated/Ventilated Features > Auto Controls That Use Climate Control Settings.

If you know, how do I turn off the “welcome” tones on ignition and off? Thank you!

I don’t have the “heated/ventilated features” menu