ok I mean that the 4wd control is on auto, now i feel that my car always run in 4wd mood, because when i run high speeds and start to stop the vehicle, i hear and feel a click in the front axle before the vehicle is fully stopped,as the t-case is giving power to he front axle and it disengage it while braking, this is happening alot , i have 98 explorer, I hope any one can understand me and sorry for my poor english