View Full Version : DIY:: Window Regulator and Wind/rattle Noise Fix on Highway

04-03-2008, 02:44 AM
Hello Guys

I've been getting lots of help here and I decided to write Window regulator and wind noise fix especially for e46 coupe.

I never fixed my window regulator before and it took me more than 4 hours to do this job. First I didn't have right tools, second I was not familiar with window regulator DIY.

Please read through carefully and hope you can fix wind/rattle noise thru your window seal.

Here is the tools you need for this DIY.


First. You need to check the gap between your front window and rubber seal. (aka weather strip)


I had more than 3cm of gap and I hear constant wind noise when I am on the highway. It was very embarrassing and ambient temperature when down rapidly due to the gap between weather strip and window. So it was pretty hard for me to maintain constant in car temperature.

I thought it's because of worn out weather strip so I actually ordered a new window seal from Tischer. (BMW Toronto asked me to pay them $400 for the part only!!) Thank you Tischer. (http://www.trademotion.com/partlocator/index.cfm?action=MorePartInfo&PartID=468198&siteid=214672&catalogid=4462)

After I change my window sealing (weather strip) I thought I will no longer have noise/rattle problem between my window and strip.

Well I was facing exactly same problem even after I change the sealing.

Now I decided to change my window regulator because that might fix my problem. So I ordered both driver/passenger side window regulators and installed passenger side first.

I should've take some pictures while I am working on my passenger side window regulator but as I said above I didn't have right tools to take every part out and that lead me into panic mode :banghead:

So I will use driver side window regulator to explain this DIY.

Before you do this please disconnect your battery since you need to take out your side airbag.

Original Window regulator DIY for Sedan.

(pics from other DIY)




For coupe it's little bit different.

04-03-2008, 02:45 AM
Here is Driver side window regulator.


now the driver side window will fit like this.


There is a hole on the window and there is a screw that you can tighten it.



You can't see a screw here because it's with my original window regulator. You have to re-use that screw. There is a black plastic part inside part A. That makes you able to move window back and forth.

In order to move window back and forth there are two screws involve. One from Part A and the other from Part B.

Also you can adjust window height.

Make sure you have less than 0.7cm of gap between window and sealing.





There is another way to adjust this without take door panel out but you won't be able to do this without understanding the mechanism.

Several people include myself asked why I keep hear wind noise when I go over +90km/h and no one seems they are able to answer it.

Hope all e46 coupe drivers can fix this problem.

My point is You can't fix problem by changing Window sealing (weather strip) so don't waste your money on that!