645ci ventilation issues

[Lotusgone]

My 55 reg E63 is delivering good ventilation to the passenger, and demisting the windscreen, but only a gentle mouse breath to the driver's side. Regassing the aircon has not made a difference.

Could anyone please offer an easy solution?

[Collectingbrass]

If I remember right there are two pollen filters and from your symptoms I would wager that the drivers side has not been done in a while. They are a doddle to change; this describes one side, but it is the same on both https://www.pelicanparts.com/techarticles/MISC/BAS...

[Lotusgone]

I'll give that a try - many thanks.

[Lotusgone]

New filter installed...but still only gentle wafts from the driver's vents.

Any other remedial suggestions would be gratefully received.

[Collectingbrass]

Have you checked that the climate controls on the idrive menu are sending the full volume of air that way? https://www.manualsdir.com/manuals/601956/bmw-645c...

If the controls are set up how you want then it could well be that the vanes are faulty or the ducts blocked but I dont have any direct expierence of that. This page has intructions to remove the door side vent grill https://www.6post.com/forums/showthread.php?t=1623... and this is how you get at the centre.

[parabolica]

Faulty ducting or a broken actuator that isn't redirecting the flow of air would be my guess.

[Lotusgone]

In my ignorance, I hadn't thought to check the idrive climate control...but they are correctly set.

Thanks for the other pointers, it might well be a dashboard-off job.