Windows don't work - fuses, motors and rocker switches ok

[rambo]

Hi all,

I am a once and future contributing member in need of a quick fix. It is now primo backroad season in the Ozarks and my power windows just died! The 25A fuse(s) #A6 (+#A7) are fine, and the windows do their little top-seal-saving 1/2" dip when the door latches are pulled so the motors seem ok. The rocker switches will not operate either window, and the drivers side window would not lower via use of the key in the door lock (as described in the manual). The top latch interlock seems ok and the top was cycled and relatched. The circuit seems simple enough - what else is there? thanks for any help.

[Loren]

A6 and A7 are Seat Heater and fog lights (respectively) on a MY2000 Boxster.

I think you want to check D1 a 30 A fuse.

[rambo]

thanks for the reply Loren. perhaps my "S" model is different because the fuse map attached to the fuse box cover clearly lists A6 and A7 for the windows, in several languages. :-)

I actually looked at all the fuses in the box and they appear fine. although I grant you that this style of fuse often lies to one's eyes. Anyway, the 30 amp comment makes sense although it seems to me that the movement that I do get would come from the same fused circuit. I will try pulling and checking all the higher-amp fuses. should have done, but very busy and trying for a quick fix. I just moved and I am unsuccessfully trying to squeeze my well-equipped 24x36 garage into the new 24x28 one, and just now I can't find my Porsche $hop manual$.

[kbrandsma]

There is no difference between MY2000 and MY2000 S. D1 (30A) is the correct fuse. Have the switches been removed and reinstalled with the white and black harnesses reversed? White goes on driver's side. Any other electrical gremlins? A failing or faulty ignition switch can cause some unexplainable problems. You can try jiggling the key. My headlights would intermittently fail when my ignition switch was failing.

[rambo]

Hey thanks Kbrandsma.

I've owned at least one Porsche for every day of the past 36 years, and some of the prior Porsches would've been taken apart and put back together about 6 times by now but this one's so good there's not much temptation to mess with it, honestly. I bought this car new in 2000 so I can attest that the console is untouched and there are no other gremlins or electrical misbehaviors beyond this window issue.

To be clear, in my haste above I wrote A6 but meant of course B6. (i wasn't referring to my sheet when I mentioned A7 or B7, which don't apply, I just recalled that I'd checked them and then misspoke). Anyway, my fuse label does state plain-as-day that A6 is the fuse for the "direction indicator lights, power windows, convertible top (Boxster)". I also saw fuse D1 listed as "power windows front", but I mistook that to mean that they'd just forgotten to print (911) there, as printed elsewhere on the fuse label.

I have just checked all fuses (and also swapped them around) but no joy.

Again, a tug on the interior or exterior door handle causes the appropriate window to lower 1/2", so the motor wants to work if it gets the signal to do so. Any common point for the two windows? a common switch ground or something that came loose, perhaps? Dang, I really need to find my $hop manual for the schematics!

thank you guys again for your suggestions and help.

[Loren]

Just to be clear... so others are not confused.

If you look at the power supply schematic (and you read the schematic) you will see that the power windows are on D1 not B6.

B Fuse block on power supply schematic

D Fuse block on power supply schematic

[rambo]

thanks for the diagrams Loren!

D1's obviously the main window motor fuse. However, the fuse block label in my car definitely calls out A6 for the windows as well. On your pic of the B-block. the 6 fuse protects two identical components that are shown as "PW TIPP". It's my guess that PW must stand for "power window". I wonder what TIPP is?

[tony_986]

Thought this might also help.

It's a scan of the fuse block paper. https://f66b4128-a-62cb3a1a-s-sites.googlegroups.com/site/mikefocke2/fuzebox01S.jpg

Loren provided the best diagram.

[R Clark Stewart]

Mine needed a new immobilizer box. It had gotten wet. Similar symptoms.