HRPOWER

I somehow wiped my speaker grill once with a cloth that had a form of cleaning solution on it.

And it seems to have stained or made a mark on the drivers speaker grill.

I originally wiped it as I caught it with a bit of mud from my toe.

I have tried a stiff washing up brush and plain water to try and get into the tiny holes, but obviously I cant spray anything in there due to the speaker behind it.

MB say the door card has to come off at worst to clean properly... noooooo thats an hours labour.

ImInPA

Wet the bristels of a semi-stiff brush and lightly tap the bristles through the holes in the grill. Wipe it down with a plush microfiber towel. Works for me.