1. Remove the window winder or door locking control assembly. This is usually held in place by a single screw or clip, and can be removed by gently prising it off.
2. Remove the screws holding the door panel in place. There are usually three screws, located around the perimeter of the panel.
3. Gently pry the door panel off the door. Start by inserting a flat-head screwdriver or trim removal tool into the seam between the panel and the door, and then work your way around the perimeter of the panel until it pops off.
4. Disconnect the electrical connectors. There may be one or two electrical connectors attached to the door panel, such as for the window switch or door speaker. Disconnect these connectors before completely removing the panel.
5. Remove the door panel. Once the electrical connectors are disconnected, you can carefully remove the door panel from the door.
To reinstall the door panel, simply follow these steps in reverse order.