Low air volume from vents
Thread Starter
Newbie
Joined: Jul 2017
Posts: 1
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E500 4matic
Low air volume from vents
04 w211 e500 4matic. Replaced the blower motor and regulator, internal and external interior air filters. New motor can be heard running at different speeds based on dash setting but air volume from all vents is low. Air is cold but barely comes out. Can see the flap for the floor vents open but still very low pressure coming out. Any suggestions are appreciated
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 1,011
From: Miami, FL
2003 CL 600
If the blower is spinning the right direction and up to speed, it has to be a stuck actuator or door somewhere in the dash. This will not be fun or easy to find, you will have to remove things for access and determine at what point the airflow is getting blocked.
Senior Member
Joined: Oct 2011
Posts: 314
Likes: 29
From: Coastal Georgia, USA
2007 E350 Sedan
04 w211 e500 4matic. Replaced the blower motor and regulator, internal and external interior air filters. New motor can be heard running at different speeds based on dash setting but air volume from all vents is low. Air is cold but barely comes out. Can see the flap for the floor vents open but still very low pressure coming out. Any suggestions are appreciated
Super Member
Joined: Sep 2005
Posts: 723
Likes: 32
From: Central Jersey
2003 E500, 2004 G35X
As I recall my old E500, the adjuster for the vents needs to be pulled out to adjust the direction of the air flow. Maybe that "ring" is sticky. Pull it and rotate a few times and see whether it works. It's a poor design.
