Drivers Side Won't Blow Hot Air, Passenger Will
I have a 2006 C350 4Matic with an issue I can figure out.
I thought it might have been an issue with the vent flaps but am lost.
Putting on the air conditioning every vent blows full speed cool air.
Putting on the heat, every vent on the driver side of the car wont blow. (Front defogger, middle, and lower). The passenger side will blow heat without issue.
Any ideas what might be causing this?
Thanks again for any help.



