Mondeo 2011 Turbo Diesel lack of power

[AlanM]

Have a look at this channel on YouTube:

https://youtube.com/@yepthatsit?si=DlJagU94IetLjNi-

He has fixed some severely malfunctioning powershift and Volvo DCTs. (Same transmission) by basically cleaning out the valve body and demagnetising the solenoids.

Also, changing the oil may not produce an instant fix. The TCM will have adapted to dirty old oil and may take time to relearn having new oil. A clutch learn could help.

It's certainly worth trying before assuming the transmission is shot.