Assuming it's an electric window, it's likely the window switch or window motor. You can search via internet on how to remove the door panel on your model. Most recent door panels are similar in the way they are attached so you can look at some online and compare them to yours in the way they are attached. It's usually pop-in clips and a few screws. Careful not to break the clips while pulling them out. A flat putty knife works well for this to GENTLY pry the panel up as close to the clip as possible.
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Assuming it's an electric window, it's likely the window switch or window motor. You can search via internet on how to remove the door panel on your model. Most recent door panels are similar in the way they are attached so you can look at some online and compare them to yours in the way they are attached. It's usually pop-in clips and a few screws. Careful not to break the clips while pulling them out. A flat putty knife works well for this to GENTLY pry the panel up as close to the clip as possible.