I have not started the car in a few weeks. Today I go to unlock it and the alarm horn starts beeping and the lights are flashing. I try the key in the door and the ignition and still cant get it to stop or get the engine to start. Had to disconnect the battery. This never happened before but I checked the battery and it was down to 12.2 volts from just sitting a while. Could this have caused the problem. I'm charging it now and will try again in the morning.