I had traveled to Philadelphia and back and not had any issues with the cruise control going up and down on the hills of 81 and 476. Then I took the car to NJ and I had some issues with it going down the hill (less than the 6% grade). The car would down shift just I got to the bottom and it would send the RPMs to at least 5 and I quickly took the cruise off. It did this at least 4 times before I decided not have the car in cruise fear of burning the motor up. I took the car in to the Hyundai dealership and was told that is normal. That is not normal. I have driven other manufactures cars (Volvo, Lincoln, Ford, Chevy, Toyota, Buick, VW, and GMC) and my wife's car is a Tucson and NONE of them have down shifted that badly (almost like being in 2nd gear).

Observed problem shortly after buying new Santa Fe. When cruise control is engaged and vehicle downshifts to maintain speed, either to decrease speed going downhill or increase speed going uphill, it will take forever(if it ever does)to return back to the gear it was in before the downshift. Usually I will cancel cruise to get it to up-shift back to the original gear, which may be 500-1000 RPM's above where it was before the downshift. Service manager at dealer said this was normal and her Santa Fe did the same thing.

Every automatic I've owned before with cruise has downshifted smoothly and returned to previous gear(usually one gear away) very smoothly. The Santa Fe downshifts 1- 3 gears, takes forever to go back to original gear and does none of this smoothly.

Would love to hear from other Santa Fe owners with 6 speed Shifttronic and cruise.