One or more door lock assembly may fail and cause door locking/unlocking problems.Google+
Car Problem Reports
Volvo V70 Door Lock Assemblies May Fail and Cause Locking/Unlocking Problems
Volvo V70 Problem
Average Mileage: 152,529 mi (103,000 mi - 204,177 mi)
Visitor, 2000 Volvo V70, 204,177 mi
Erratic unlocking behaviour, typically during heat of day, fail to unlock with remote key central lock, have to unlock manually. Resolves on it's own.
right front door will not lock
Driver door is stuck closed and locked. I do not know how to remove the panel with the door closed.
Visitor, 1998 Volvo V70, 103,000 mi
pass side front won;t unlock