Hey guys. I hope you can help me. I have been searching for an answer all over but I can't find anything pertaining to the 2nd gens. I have a 2005 Expedition and my ABS light will come on every so often. I was thinking that it may be an ABS sensor. But every time I get ready to take it to a place to have the light read, it's gone. My question is will a bad ABS sensor cause the truck to sense a wheel slip and cause the 4HI light to flash in AWD mode? Sorry if this has been answered. I searched and couldn't find anything. Maybe I haven't been using the right search words but any information would be greatly appreciated.