Where is the mass air flow sensor / MAF? Pic attached

[mercedesc180a]

I have a C180 Kompressor 2006

I have the check engine light code P0171, system too lean bank.

Someone suggested cleaning the MAF sensor and I have the correct cleaning spray to do this, BUT I am unsure where it is and how to disconnect it! Sorry if thats a basic question. I have watched a youtube video of it being removed on another type of Merc but the layout seems different on mine.

Pic at

where is it?? And also, I heard i could avoid removing whole air filter box etc by just living cover off and spraying the cleaner through to the maf sensor that way?

Hope someone can help.

Thanks

 

[Auto-mobile]

You can see the plug just to the right of the yellow sticker on the airbox.

My money is on you having a split breather hose under the airbox itself, air mass never go on this engine, plus you have a lean fault as its sucking in unmetered air.