sfo, probably you're right!  i think next opportunity which needs to be for the recalls (unfortunately)  i'll just ask for an oil change anyway whether it's time or not !  :)

Fuel line which was mentioned in a post already and PDK control unit:

 

The PDK control unit can sometimes be misdiagnosed on the affected vehicles due to a software error if the engine is switched off in selector-lever positions “P” or “D” and is then re-started again in selector-lever position “N”.

As a result, fault code “P1772 – Gear valve 2 stuck on pressure” is stored in the fault memory of the PDK control unit and the PDK transmission switches to the reduced driving program until the ignition is switched off and on again.


Action Required:

Re-program the PDK control unit using a modified data record.