My 2007 Sorento sometimes has a problem starting. the battery is brand new. lights, radio, etc come on but car will not start. sometimes it takes 2-3 times other times it takes 5-6 tries before it starts. when i take it to the dealer of course it starts right away. there is no common thread in the starting problem. it happens in the morning and evenings, in hot weather and cold, rain or shine. dealer can find no problems with the car.