Combines 2188 auger swing and engage

Does the "auger out" light come on in the "A" postIJIf it doesn't, it is probably a bad rear unloader limit switch(on the saddle).Test by connecting the 2 wires on the switch.It is wired this way to prevent the auger from engaging in the saddle by accident

As mentioned,try the limit switch. The same thing has happened to me a few times.