Was running fine, went in store cam back and it wouldn't start. I checked fuel pressure and it's good. Tried starter fluid and it started. What could be the problem?

Warning lights. Check gauge, check battery, break system and check engine are all on. Lights and radio all work. It was rattling before it died

My radio isn't getting power

Temperature not reading right temperature for the outside

Will not do anything turn key on no dash lights anti theft light not blinking. Battery voltage is at 12.5 volts. Door chime not working with key in IGN with door open.