I bought an '08 Honda Civic LX (110k miles). After a few days of flawless driving, I noticed a couple wires NOT connected that were coming from the hood opener-sensor thing. I plugged them together and noticed no difference in the car until I let the car sit for about 6 hours. That's when the trouble started.
I tried starting the car. The engine had trouble cranking and then would stop. I pulled the key out and tried a couple more times. Finally, the engine started.
The next day, I had to do the same thing to get the car to start.
Now, 2 days later, the car won't even crank. No ticking, no cranking, nothing. When I turn the car to "On", everything works (stereo, lights, headlights, dashboard lights- everything). You would notice no difference until you tried starting the car.
The battery date is 10/14 so it's coming up on 2 years old. I haven't tried cleaning the battery connections yet. Just looking at them, I cannot notice any problems or visual corrosion.
I'm thinking that because I plugged those wires from the hood-sensor-thing together, it's a bad sensor which drew current from the battery while the car was off. If this was the case then jumping the car would probably fix it, but nope, not my lucky day. Jumping the car didn't help at all.
Before I start checking fuses and connections, I would like any insight people have on what the problem could be.