When shifting (turning knob) on my 2006 4Runner it takes almost 2 minutes for the light on dash to stop flashing & the truck to actually engage into 4WD. Is this normal??? Once its in 4WD its great but the lag time is not acceptable to me & at times going from dry to snow covered areas I need it alot sooner than the time mine takes...Only has 9000 miles on truck & this is my first winter so I am new to this experience...Thanks in advance!