Window knock sound when rolling down/up

[Spoolie]

What causes this and how do I fix it?

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[RacinJason]

Is the sound only when the window completes the full travel, say all the way up.. thud, or all the way down, thud? If so, there is a method to re-calibrate the window travel that worked on the S197 models. From my 05 manual it says:

To re-calibrate the window, pull the switch up to raise the
window until it completes its travel and hold the switch up for 2
seconds.
...
lower the window until it completes its travel and hold the switch down for 2
seconds. Immediately after releasing the window down switch, pull the
switch up to raise the window until it completes its travel and hold the
switch up for 2 seconds.

Hope this helps.

 

[Spoolie]

Is the sound only when the window completes the full travel, say all the way up.. thud, or all the way down, thud? If so, there is a method to re-calibrate the window travel that worked on the S197 models. From my 05 manual it says:

To re-calibrate the window, pull the switch up to raise the
window until it completes its travel and hold the switch up for 2
seconds.
...
lower the window until it completes its travel and hold the switch down for 2
seconds. Immediately after releasing the window down switch, pull the
switch up to raise the window until it completes its travel and hold the
switch up for 2 seconds.

Hope this helps.

No it's when the window is about in the middle. About 3-4 little knocks

 

[RacinJason]

Warranty work then? Seems like a gear is worn or something like that.

 

[Mazman]

No it's when the window is about in the middle. About 3-4 little knocks

Mine have started to sound exactly the same

lol I have so many issues and sounds on my car now hahaha

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