So I just bought this 08 civic LX (110k miles). After a few days of flawless driving, we noticed a couple wires NOT connected that were coming from the hood opener-sensor thing. Plugged them together and noticed no difference in the car until I let the car sit for about 6 hours then thats when the trouble started. Tried starting the car and the engine had trouble cranking then would stop. Pulled the key out and tried a couple more times and finally the engine started. The next day I had to do the same thing to get the car to start and now 2 days later the car wont even crank. No ticking, no cranking- nothing. Battery date is 10/14 so its coming up on 2 years old. 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.
I havent gotten to it yet but I havent tried cleaning the battery connections. Just looking at them I cannot notice any problems or visual corrosion. Im thinking that because I plugged those wires from the hood-sensor-thing, its a bad sensor and 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 didnt help at all and before I start checking fuses and connections I would like any insight people have on what the problem could be.