I don't belive that any Rangers come with the "PANIC ASSIST BRAKING", but I've been wrong on more than one occation. I would suspect bearing grease has breached one or both front hubs and has gotten into the teeth of the ABS toner ring. When this occurs, the ABS sensor generates bad/false readings to the ABS module. When this occurs, it will cause the same symtoms that you have. The easiest way to check is to remove the ABS sensors from the front hubs and then turn the hub by hand while looking at the toner ring thru the hole that the ABS sensor goes into. If you see any grease in the teeth of the tomer ring, the seal has been breached and the hub will need to be replaced. It is normally more cost effective to replace both hubs if you have this problem as the new hubs come preloaded with new ABS sensors and the cost of just a new sensor is close to the cost of a hub. ABS sensors must be replaced in pairs as a new sensor sends a stronger signal than the older sensor and will also cause weak/false reading. I have seen this issue on the Rangers/Explores and Sport Tracs numberous times.
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Last edited by Use Common Sense; 03-18-2009 at 08:00 AM.