Oris-matic swiveling tow bar not releasing

[Delboy0127]

Thanks for info.
Sad story!
I will see what I can do and post it here, maybe to help others with same issue.
Have a nice dag!!

Regards Overoe

Further to above message on dash Reads TRAILER coupling Check lock with tow ball above also further picture of Tow Ball to left Just booked with main dealer for MOT & next service Mercedes asks by email, have I sorted Tow bar warning on Dash as car will fail MOT. They could not remove it on Star machine other than switch off towbar Which then disconnects wiring to new detachable towbar fitted. Any ideas folks