Engine wont start

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Make sure the battery has a full charge. Battery connections all good. Then check your charging system. Don't use the alternator to charge a dead battery. Just my opinion.

Try a different key then scan for codes it may be a security issue so check that with scanner.

The 60% battery is the problem. At that level it is too weak to start you car. Also, check for corrosion at the battery terminals (especially the positive cable), make sure they are clean and tight (making good contact).
If you have corrosion, and the 60% battery power, that's enough to keep it from cranking.

60 percent? It's dead. I don't know of any tester that measures in percentages but you need to recharge the battery at a slow rate for an hour.

The best way you can test the battery yourself is with an inexpensive digital voltmeter. A fully-charged battery will measure 12.6 volts. A good but discharged battery will measure close to 12.2 volts. At 11 volts or less a cell is shorted and the battery must be replaced. That only tells you the state of charge, not how long it can deliver current before it goes dead. That amount of time decreases as the battery ages due to the lead flaking off the plates.

Use a socket to see if the engine will turn over by hand. If not, remove the spark plugs and see if it is hydrolocked on coolant. This engine has a known problem with the plastic intake manifold deteriorating and leaking coolant into the vacuum chamber under it.

Pressure check coolant system for intake/head gasket leak.

Usually an ignition module. They will run OK until hot, then will run again when cool, then fail when hot.

They can be tested at most autoparts stores for free.