OK I have searched over and over. If I leave my headlights on or keys in the ignition I get no warning chimes/beeps anymore. This has caused a dead battery at least once (at the airport parking lot!!!). Any ideas? Fuse? Setting in the 'puter?
The gong is in the panel under the dash, by you knee. Has anyone worked in that area just before the problem began and forgot to connect it up again? You could take a look, a few Phillips screws and maybe a couple of small (tx10) screws hold the panel in place.
Don't know which fuse, if any and I wouldn't be surprised that you could turn off the sound with the diag, but I haven't noticed such a setting (why would anyone want to turn it off???).