1. Identify the blown fuse. There are several fuse boxes in the Renault Megane Dynamique, and the location of the specific fuse you need to replace may vary depending on the year and model of your vehicle.
2. Open the fuse box. Once you have located the fuse box, open it by pressing the release button or by simply pulling on the cover.
3. Remove the blown fuse. Use a fuse puller to remove the blown fuse from its socket. If you don't have a fuse puller, you can also use a pair of pliers to carefully grip and remove the fuse.
4. Install the new fuse. Insert the new fuse into the socket, making sure that it is properly seated. The amperage rating of the new fuse should be the same as the blown fuse.
5. Close the fuse box. Once you have installed the new fuse, close the fuse box by pressing the release button or by simply snapping the cover into place.
