Welcome to Just Answer,
1.) Remove the cover on the pull handle and you will find 2 screws.
2.) Remove the triangle shaped piece behind the mirror by prying, it is attached with snap in clips.
3.)Remove the screw from the door handle
If you have any more questions, just ask, I can dig up a couple of diagrams if needed.
When you have all of the screws out, pull straight up on the door panel. If this does not work it is snapped in. I apologize I work on so many different Chrysler products I can not remember specifically on the Avenger if it is snapped in or not. If there is any doubt I lie under the door and pry the bottom out enough to shine a flashlighlight in there and see whats up. If they are snapped they will be tight as well as making a pretty disturbing sound when the pop loose.
I know this is vague, I have to work tomorrow I will look at the JS body I am working on and let you know for sure if that is not to late. I should be able to get a definite answer for you before noon central time tomorrow.
Pry out the bottom of the panel once you get a couple of snaps to pop loose it will get easier. It is snapped in.
after removing screws -- pry upwards- ihope this helps you , thanks tim
Carefully insert a screw driver wher I have the arrow. gently pry out from the door after you get a couple of clips to snap loose you can get your hand in there to pop all around the perimiter of the door. You will have a rod that connects the door handle to the latch. The panel is all one piece.