I have an 04 es and the way Honda designed them is that... to engauge the rear tires CAN NOT be turning much FASTER than the front, and to DISengauge you must be UNDER 5mph or it will not come out of 4x4. Honda does things for a reason not just to *iss us off. If you want it full time 4x4 just flip the switch to 4x4 and DONT TOUCH IT. Or you can sell the 03 and get a 00 or older those are full time 4x4 or even an older Rubicon those are full time 4x4 up untill the 04s or 05s