You're out of luck. Your car doesn't have a transmission dip stick. Another ploy by auto makers to force you to go to a dealer.
According to your owners manual, If the trans isn't leaking then don't worry about having the oil checked at your dealer.
2016 Newmar Dutch Star 4369
Newmar Owners Club
USAF 1966-1969,- Law Enforcement 1969 - 2003, Retired since March 2003