Possible Causes
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
INTERMITTENT CONDITION
DECKLID CYLINDER LOCK SWITCH GROUND OPEN
BODY CONTROL MODULE INTERNAL MALFUNCTION
DECKLID CYLINDER LOCK SWITCH OPEN
DECKLID SECURITY SWITCH SENSE CIRCUIT OPEN