Hey Tommy...... Where did you find that info? I was stuck in the mud and switched to A4WD, the rear wheels were spinning like crazy and the front never would engage! I put it in 4 hi and no problem. I still don't think that the light is supposed to flash in A4WD, every other mode comes on and stays on, so it just wouldn't make any sense why that mode would flash. Just thought you might find this interesting!