My wife's 2.7 Tucson 151,000 is having yet another issue. In the driving mode it will not upshift automatically? We can use the slap stick 1,2,3,4 and do it manually. Once in 4th if I let off of the gas pedal it downshifts automatically 3,2,1. It doesn't jerk (jerking= if I let off of the pedal quickly it feel like it never got out of 1st gear) if I start in 2nd gear and work my way up to 4th. I have just replaced the input & output sensors but to no avail. I am looking to go to Toyota & lease a car Pruis V Hybrid:frown::frown::frown: because then they will fix all of the problems? Can anyone help.