Unscrew the cover's four screws using a Torx tool, size T20 (1). They should not be loosened completely. (3 - 4 turns are sufficient.)
Slide the cover to one side.
Remove the cover.
Reinstall the cover in reverse order.
Lamp replacement - cover for main/dipped beam bulbs
Main/dipped beam bulbs are accessed by releasing the headlamp's larger cover.