Strange situation with a 2006 F-150: When the MPVI is plugged in and the ignition key is turned on, the chime sets off on a constant tone, the interior lights go on, and a "Door Ajar" message is displayed. Unplug the MPVI, chime and message goes away.
ECM can be read and scanned, but the chime is a bit obnoxious. Suggestions, other than earplugs?
--Brian