Just noticed this today - when I pulled the key out once to the office the noise/beep/high pitch sound stayed on. It does decrease in loudness when the key is removed - very subtle, and stops with the door closed. Also noticed now the head lights staying on after removing the key. Any ideas what is causing this? I installed two power outlets directly to the battery 3 weeks past but no other mods performed. Something to do with the ignition switch? I will be out the next 2-3 hours and answer questions then. Thanks, Nelson