I have a 2007 3 Hatch. The radio, interior lights, alarm (remote) will not work. It says I have low pressue in my tires and the seat belt light is always on. I have tested all the relays and fuses and all looks good. Any idea on why I can get this to work?

A few months ago I unplugged the panel under the passenger side dash and let it sit for a few minutes and then it worked after plugging it back in... Now its just nothing... Pretty aggravating. HELP!

 

look at the connectors on that panel you unplugged... it's the passenger junction box (PJB) and i've seen a few people here with corrosion issues on it & its connectors. That could cause any number of electrical faults.