I have recently been experiencing a slight rattling or knocking sound coming from under the dash of my Ford Focus Zetec S 2010.
The rattle only starts when the car is travelling at a speed of 40MPH or more. It sounds like it is between the centre and the left hand side of the dash.
I have had the centre console and glove box out but I cannot see anything loose that can be causing the rattle. I have driven the car with the centre console and the glove box removed and the rattle is still present.
It seems to me the problem persists just under the dash online with the air vents. (It could possibly be the air vent.) Or somewhere that I am not able to get to without more knowledge.
Has anyone ever experienced this? Does anyone have a clue as to what this could be?
Many thanks in advance for an help!