Liftgate buttons only work when engine is running
Recently purchased a 2015 QX60. We are having an issue with the power lift gate. It seems to only open/close when the engine is running, or for a few minutes after it is turned off. This is consistent with all 3 methods of operation (remote button, door button, front dash button). We've tried toggling the power switch off and on. Is there a vehicle setting that was changed, or some sort of bigger problem?