2006 Pathfinder, battery charged and original key being used.
So I went to start my car and the starter gave me one click then everything went dead. No matter how many times I tried to crank it it just wouldn't start. I would see a faint flash of the car/key icon but that was it. I figured it might be the battery fuse since it was running fine while doing errands this morning. I ran down to the auto parts store and picked up a new one I came back disconnnected everything installed the new fuse and as soon as I touched the ground to the battery the horn started blowing and the lights flashed. I use the fob figuring it had something to do with the panic function but it wouldn't shut off. I tried starting the car with the key but no joy although all the dash lights were back but no crank. I disconnected the battery and read everything I could about resetting the immobilizer but nothing worked. I did manage to get the horn to stop blowing by holding the panic button for 5 seconds then pressing the lock button twice. everytime I try to unlock the vehicle with either the key or the fob the horn blows and the lights flash and still no crank. I have disconnected the battery and waited 1/2 hour thinking it would reboot, but as soon as the battery cables go back the process begins all over again. Has anyone experienced this situation and have a resolution. I'd hate to go to the stealership but it looks like that is where my path is heading. Any assistance would be appreciated.