True story!! I just got my new truck 2016 last month, well i go to get in it 2-weeks ago and the engine light is on and the traction control is on. So what did i do? I went right to the dealer to find out what the hell is wrong with my new truck, long story short, someone had loosened the gas cap causing those 2 lights to come on. I know it wasnt me because i always install my cap correctly, and also i was showing a 1/4 tank at that time. So the lights would gave came on along time ago if i had done it. Only thing i can think of is that someone tried to siphon gas from my tank? Wish i would of had a lockable cap, would have saved me 3hrs of my life going to the Toyota Dealer at 4:00 in the afternoon.