I have a similar problem, on my 2007 Sedona EX that i have been diagnosing for the last 6 months. Everything works fine until i open and close the fuel door. Upon closing the fuel door i am able to only manually open and close the sliding door. When i attempt to automatically open/close the sliding door i get the 1 chime (beep). If i cycle the fuel door (open and close it) the automatic cycle will eventually start working fine again. The actuator seems to be working fine and i can manually unlatch without an issue.
So basically, i am trying to figure out where this fuel lid/door sensor or switch is that tells the door that the fuel door is open. If i can locate this switch i can troubleshoot it further. I searched for the schematic, exploded views on parts websites and at hyundai tech info dot com under entourage and it is very vague as to the location of it....I just can't figure out where this is located. Can anyone help me pinpoint where this is?