Make sure all tire are pumped up the same pressure then reset it. You probably accidentally push the On/Off button for the stability system. Get my number from your mom! We can talk. I'll be back in CA in Nov 28. Push the Eco button so it will be ON and you can save more gas per mile.

Need oil change? Or did you just get one? Maybe a sensor just needed to be reset. Same for the tires as long as the pressure in all of them are good. I don't know a lot about vehicles either. Might be a good idea to get them checked out if you're still unsure:)