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  #1  
Old 07-03-2002, 01:23 PM
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Join Date: Sep 2001
Posts: 131
300e power window problems

I am in need of some help with my front passenger side power window. I took my car into an MB shop and they said the motor was dead but they wanted way to much to repair it along with the back window and vacuum pump for the door locks so I had them do a service and bought the parts separately to do when I got the car back. I have done everythign else except the window. I see that the motor is connected to the regulator by bolts. I also know that you have to lower the window to remove teh regulator but the bolts for the motor are not accessible without removing the regulator. How can I get the wondow to roll down if the motor is dead? Is there a manual override like with the sunroof? All the wiring is fine, just a dead motor. Any help would be greatly appreciated.

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89 300E Pearl Grey Metallic
7 Spoke 16" staggered wheels (SLK)
215/55/16 Hankook Ventus HRII H405 tires
Euro Headlights
Smoked Corners
Smoked red/clear tail lights

1987 300e Black Metallic (mom's car)
8 hole 15" wheels (C Class)
Clear Corners
Red/Smoked tail lights
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  #2  
Old 07-03-2002, 06:53 PM
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Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
On 124 300e rear window motor is come with reg if your window is up position just cut the cable dorp the window this way you can replace reg with motor.
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MB STARS Master Guild Technician,17 years MB tech
14 years independent shop owner
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  #3  
Old 07-03-2002, 08:12 PM
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Join Date: May 2002
Location: Columbus, OH
Posts: 44
Brockley:

I had this problem several weeks ago. Posted a question, but no one responded. The MB shop manual and everything else I've read say the first step is to lower the window. How if it's stuck?

After removing the door liner and weather proofing you will find that there are 5 bolts which secure the window regulator. Two secure the regulator arm which is used for adjustment. They come off easily. The other 3 secure the motor side. I found that they had immense pressure on them and could not be moved after taking off the nuts. (Notice that if you hold the switch in after window reaches the top the door will bulge out towards the inside of the car). I put the nuts back on the ends of the bolts and managed to knock two of them in with a hammer. At that point the pressure was released enough for the regulator to lower a little. Guess what? I tried the switch and the motor brought the window down. Put everything back together and it has worked fine since, so maybe you don't even need a new motor.

Oh yeah, remember to secure the window at the top with a wedge or duct tape before you remove all 5 bolts or it might come crashing down. Lots of sharp metal in there--don't want to lose a finger.

Good luck.

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Jim Wiggin
Columbus, OH
1989 300E
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