I too have a Miele washing machine - it also has a Rinse Hold - some washing programmes take the machine to rinse hold in an attempt to prevent creasing - other programmes do not.
A clue to your situation is the word "hold" - progress is held suspended until the operator is ready for things to progress.
Your machine does not require a fix and neither is it on the way out. You would do well to read the operating instructions.
Rinse Hold is a feature - not a fault.
Happy Washing...
January 2016