The power lift gate door opened on its own when my husband opened one of the side sliding doors. The rear door then collided with the shopping cart that was parked behind the car and continued to open, lifting the grocery cart with our 45lb son and all of our groceries up off the ground. My husband lunged to catch our son and our 2 year old daughter fell, landing head first on the asphalt. She is currently in the emergency room. The door is meant to STOP opening if it bumps another object or feels resistance. It is also not meant to open on its own. I found several videos of this exact issue (the power lift gate opening on its own when the sliding door is opened). However, the resulting injury has caused alarm and I no longer feel safe driving this vehicle. We have video footage of the incident from the grocery storeâs security cameras.