Re: 2010 patriot wont start
So if it doesnīt crank, you first have to see if the starter relay clicks. Donīt know the patriot, but it should have a relay and fuse box under the hood, where normally the starter relay sits. You could swap the starter relay with for example the horn relay (they are normally the same), and try again. If the relay clicks when trying to start, then or the starter motor is bad, or the small wire to the starter solenoid makes bad contact or is loose, or a bad ground.
If the starter relay doesnīt click when trying to start, then the ignition switch could be the problem, the Park/Neutral safety switch or wiring.
But since you said that you could hear the starter motor trying to rotate, i would think that the starter motor is the problem.
With "the thermostat goes over half in 20 minutes", you mean that the temperature indication goes over half scale in 20 minutes? That is quite slow, because the engine should warm up quicker.