I have searched and when I type in (4x4 not working or 4wd not working or even 4x4) it says cannot find so maybe by pc was the problem I dunno. Just about to purchase another prairie from my friend and his 4x4 quit working after we put a new cv joint in. It doesnt flash and you cant hear the actuator lock in. It just stays in 2wd, what is every possible problem. If you want make this a sticky unless it already is. Thanks.