Bad starter? Bad starter selinoid?
The starter is bad. Try hit it with a hammer(don't hit it too hard to break the starter) a couple of times, the starter will almost always work and the engine will start. If working you have found the problem.
Looking for a Used Endeavor in your area?
CarGurus has 13 nationwide Endeavor listings starting at $4,995.
Search Mitsubishi Endeavor Questions
Mitsubishi Endeavor Experts