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At first, I suggest doing a basic setting of the ventilation flaps in the control unit (climatronic). I seem to remember that it can be done with VCDS. If the problem still persists, you will need to investigate whether the potentiometers for the flap control motors (4) are not damaged. With the mu...

Remember that fan speed is under the control of the controller, so it can end up getting slowed/speeded up if the controller thinks that is necessary. Hi, that also sounds plausible. I would prefer to fix this myself, and not having to go through the dealer shop. I am trying to locate the correct p...

Small new update, when hitting the recirkulation button, it behaves normally. So it might be related to this. Will invistigate further. Exactly the same, you solved problem? What was solution? Hi, sorry for reply after months. But pressing the recirculation button only fixed the problem at that sta...

Small new update, when hitting the recirkulation button, it behaves normally. So it might be related to this. Will invistigate further.

Thank you for your replies.

It varies depending on the set speed, and obviously it is easiest to hear at high setting. The pollenfilter is change recently, but will try the manouvre of turning the fan manually.

I do not think it has anything to do with the light sensor.

Hi This is ny first post, so bare with me. :D My wife has a Polo 6r 1.2 TSI Comfortline 2013, with automatic climatronic. When driving the fan speed goes up and down, there is no difference if it is on auto or manual function. I recently changed the pollen filter, but that did not help. I also have ...