I have a dead battery and can’t unlock the door to open the hood.
I have a key fob but don’t know how to open it to get the emergency key out.
How do do that?
Try putting ( unlock 2016 Lincoln MKX ) in your search engine and you will find several videos showing you how to do that.
If you look at the back of your remote you will see a slide you push and the back if the remote will open and you will find the key.
There is a release button on the back cover;