Power Liftgate Interface
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
Power liftgate open operation requires the vehicle to be in park and the vehicle speed to be less than 5 km/h (3 mph). The power liftgate receives information over the MS-CAN for the gear selector lever position, ignition position and for vehicle speed. These inputs have network DTCs. If any vehicle speed, ignition switch, or Transmission Range (TR) sensor DTCs are retrieved and the power liftgate is not operating, repair these DTCs first.