Replacing an outer door panel requires which of the following procedures?

Replacing an outer door panel involves several specific steps, and one of the primary actions is the removal of the old panel. This step is crucial because it creates the space needed to install a new outer panel securely and properly. The removal process may involve unfastening screws, clips, or other hardware that holds the panel in place, allowing for a clean and precise installation of the new panel.

The other options pertain to different aspects of door functionality and maintenance but are not directly related to the process of replacing an outer door panel itself. For example, repairing the window regulator, while important for the overall functionality of the door, is separate from panel replacement. Similarly, the installation of a door sensor may be necessary if the new panel is equipped with this feature, but it doesn't directly relate to the essential steps in the panel replacement process. Adjusting the door hinges might be relevant if there are alignment issues after a panel replacement, but it is not a necessary step in the actual act of removing or replacing the outer panel. Thus, the key procedure in this context is indeed the removal of the old panel.