I own a 2013 veloster. I have always left fob in purse, tossed purse in trunk, when I closed trunk the doors unlocked. Could start car with keys in purse in trunk. 6 months ago, I put purse w keys in trunk, closed trunk, doors did NOT unlock and trunk did lock so I was locked out. I KNOW, dont throw keys in car, but it's a hard habit to break after 8.5 yrs! So I ask WHY suddenly now I can close trunk and be locked out?? To to Hyundai, they couldnt find the problem and charged me $100. Batteries in fobs changed twice. I feel it must be a sensor? Any ideas?????