Futurebuyer

Hey guys so I ended up buying a 2012 c300. Weather is starting to get warmer and I’m noticing the ac is not blowing that hard. One day I had it on full blast and about 20 mins into my ride it was almost if the vents finally opened up. No it was not on auto. Is this car a vacuum unit for zones or electronic? Also if this is a come problem where Should I start

Funkwagen

Your blower motor resistor for the climate control is probably on its way out

Part # 2048707710