SLK/R170: High-Pitched squeel in cabin
It almost sounds electrical.
I played around with it in the driveway last night and could get it to go away turning the fan control off....but my gf says when she drove it home that made no difference.
That makes me think it is developing a vacuum leak in the dash.The AC works great and always has.
The car 100% stock.
The noise is in the dash and seems to be more prevalent if I open the glove box.
It is not a belt in the engine compartment
No more squeal and the recirc works...never really noticed it before.



