ArcticE

Hey I was going to change out my rear rotors and pads yesterday but when I got to taking off the rear rotor it was stuck on there really well. It looks like the parking brake is either seized to the rotor or needs to be released somehow? Since we have the manual mechanical parking brake in our G wagons, the brake pad replacement special menu is not applicable correct? When I select brake pad change it states parking brake inoperable. Any help to get these things off and changed it is greatly appreciated. 2014 G class