Up Date:

~ I have disconnected the car battery for an hour with no change produced when powered back up.
~ Discovered there is a whirling sound produced in the trunk of 10 second duration but still have not heard a hiss.
~ Found there is an emergency procedure to open the roadster trunk that does not entail being in it first but have yet to try it.
~ Determined I have an interior bulb out (drivers side) and will replace in case that somehow contributes to the problem.
~ Verified the the three blinks at lock and one at open.
~ Confirmed dash switch will now not open passenger door. Will retest if it locks it.

Off for a bulb.