Grinding from the internal air flow

[BabyBenzBoy]

I have an A class, and when the car is started there is a grinding noise coming from the dashboard (it stops after around 30secs)- I have isolated this to the internal air flow because when I press the button that regulates the flow between internal and external it starts again - with a slightly different pitch between switcing on or off (suggesting issues with opening and closing) - does any body know how I can get to this unit to either wd40 it or replace it...?

Thanks

 

[eric242340]

Grinding

Be careful with this one. To get to the problem your car has, it means removal of the dashboard. This is a big job and not really a DIY thingy. Better to live with the noise or send it to a garage and preferably one that understands A Class. Sorry couldent give an easy answer but air con/heating/air flow means a lot of work on Benz.:!: Maybe Television might be able to give more on this.