I was in a parking lot and activated Autopilot while the car was next to a stationary pillar near a parking space. Immediately after activation, the vehicle failed to detect the pillar and drove directly into it. The impact happened so quickly that there was no practical opportunity for human intervention to avoid the collision. There may or may not have been a warning, but even if a warning was displayed, it occurred too late to allow the driver to react before the impact. The system did not provide effective parking collision warning or apply automatic emergency braking. This incident caused damage to the driver-side door and mirror. My safety and the safety of others were at risk because the system failed to prevent a collision with a fixed obstacle. No inspection has yet been performed by Tesla service.