I recently upgraded my factory unit to a Clarion CD/BT unit, and the PAC module for integrating into the CANBUS. Installation went fine, but I have some seriously strange behaviour going on. As you all know, the unit will stay powered on with the key off but no doors opened. When a door is opened, it turns off. That's true for mine also, in all modes except tuner mode. So, in CD/AUX/BT, key off and open a door, it turns off as expected. In Tuner mode, key off, open door, and it continues to be powered and play, for about 30 minutes. With the key out, door open and the tuner playing, pressing the Mode button to change out of Tuner mode into another mode immediately turns it off.
Crutchfield has already replaced the Clarion unit, and this did not fix the issue. The next step is the PAC module, but why would that make a difference depending on the mode selected on the radio? Any ideas?!?!