Power Liftgate Interface
WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. 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 CAN from the PCM for the PRNDL position and from the Instrument Cluster (IC) (gateway) for vehicle speed. These inputs have network DTCs. If any vehicle speed or transmission rangeTransmission Range (TR) switch DTCs are retrieved and the power liftgate is not operating, repair these DTCs first.