Originally Posted by
alaxfire
Back side ?
If you mean inside one of the doors, then probably a fractured air tube.
The pump in the trunk alternately applies pressure or vacuum to the door solenoids to actuate lock/unlock.
Same is true for the console lid on the roadsters.
When i open the trunk there's a rubber cable going from the car to the trunk door, close by the roof and i think that's where that sound is coming from.
But what i also notice is that that sound is very long, i think about 8 seconds? Can it be that the air pomp is pomping air to long?