Thanks for the advice everyone. I was able to get the door chime fixed.
FYI: I tried this on my 06 TB and it did NOT work. It does work by pressing the radio button #6.
RE: I have also read that you can adjust the chime volume by having the key in the ignition and in the OFF position, turn on the headlights, then open the driver's door. Once the chimes start, you can use the the dimmer knob to adjust the chime volume. Never tried this method though so I am not sure if it works.
How did you resolve the issue?