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Power Window Motor Assembly Parts


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Hi all,

I finally took my door apart today and removed the power window regulator and motor assembly to investigate my issue. To recap, my window would not quite move down the 10mm or so when opening the door, but it did try. All other functions worked normally. The window would also have some play in it which you could move up and down about 4-5mm by hand - but ONLY when the window was partially down. When the window was in the 'fully up' position, it was solid and didn't move at all.

I was told by the dealer this was probably a problem with the regulator, as this is common, but after taking the thing apart I have found that it's actually a problem with the motor assembly. The motor itself works fine, but the problem is with the gears. If you haven't taken the assembly apart before, it basically consists of a worm gear, a large plastic gear (with mates with the worm gear), and a smaller plastic gear that fits *inside* the large gear and has the plastic output shaft on it. In between the large and small plastic gears there is a rubber "cushion" (for want of a better word), which allows a slight amount of play so that there is some 'softness' from the powerful, unforgiving motor. In operation the motor turns the worm gear, which turns the large gear, which exerts pressure on the rubber cushion, which turns the small gear, which turns the regulator on the outside (via the output shaft).

In my case, it would appear the rubber part has excessively worn and is allowing a huge amount of play between the small and large gears. Here are some pictures of the parts:

The rubber "cushion" - you can see the holes that mate with the small gear have been worn into ovals, allowing the excessive play:

rubber_gear.jpg

The inside of the large gear (still in the motor assembly) with the small gear and rubber "cushion" removed:

motor_and_gear.jpg

The small plastic gear (upside down so you can see the plastic 'pins' that fit into the rubber "cushion"):

rubber_gear_and_plastic_gear.jpg

So, my question is - can this rubber cushion be bought seperately from Porsche? :)

Thanks!

Shash

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  • 7 months later...
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While I'm not there in person, I HIGHLY, HIGHLY doubt you have a problem with your window motor, they're bulletproof. The window regulators on the other hand go bad ALL the time and exhibit this exact same symptom.

And theres a 99% chance there are no parts available for that motor other than just the whole motor assembly.

Take a look at the cables for your window regulator theres probably slack in them.

Edited by PTEC
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While I'm not there in person, I HIGHLY, HIGHLY doubt you have a problem with your window motor, they're bulletproof. The window regulators on the other hand go bad ALL the time and exhibit this exact same symptom.

agreed. it doesn't matter if there's slack in the motor, the regulator and electronics are designed to compensate for that. if you need a motor, PM me. i bought a used regulator to replace mine and it came with a motor, which i don't need.

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While I'm not there in person, I HIGHLY, HIGHLY doubt you have a problem with your window motor, they're bulletproof. The window regulators on the other hand go bad ALL the time and exhibit this exact same symptom.

agreed. it doesn't matter if there's slack in the motor, the regulator and electronics are designed to compensate for that. if you need a motor, PM me. i bought a used regulator to replace mine and it came with a motor, which i don't need.

Thanks. I don't recall ever mentioning I thought it was the motor as mine works as expected I agree in the 101 cars I"ve owned I"ve lost maybe one motor...it's always broken rails, window clips and gears in the assembly.

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