Changing W211 pollen filter

[Satch]

All set to change it but: how do you get the cover off!!

Undone the plastic nut to the rear of the washer bottle filler cap which you would be entitled to think was the key part of the process but nothing wants to move.

What am I missing??

 

[AMGBoy]

undo the 10mil nut behind the washer bottle

then lift that end up and it will clip out thay are tight so you will have to give it a bit