Windows Are Not Going Up All The Way

[HenryV]

This was an old post of mine.

Problem description: the windows do not drop when you open the door handle or operate the top mechanism.

The boxster has an electronic circuit that triggers the windows to "drop down" when you open the doors, allowing for a very tight fit (window seal) for a drop-top. This circuit is triggered by the top being up, or being "latched" on top of the windscreen. This same circuit also avoids the windows from rolling all the way up when the top is in motion (i.e. not all the way down, or not all the way up and latched). Furthermore, the windows circuit has protection with regards to fuses, relays working with top relays and automatic reset.

Here's what I would do:

1. Drop the top all the way down, so the light (in the instrument cluster) goes off.

2. Check the fuse for the windows in your fuse bay.

Better yet, replace it with the spare fuse, or check with a voltmeter. (Sometimes they appear fine, but may have failed)

3. Check the window relay in your relay bay.

The relay bay is right above your fuse bay. The window relay is the double relay with a black dot on it. Reseat this relay - just push hard on it and make sure it fits snug.

4. Roll the windows all the way down, then up.

Try this a few times.

5. If there is no windows movement, take the battery cable off and try again.

Make sure you have the radio codes - you'll need them when you reconnect the battery

6. After you reconnect the battery and there is no window movement, your motor engine may have failed.

But this is unlikely to fail for both sides simultaneously.

7. If the windows move up and down, and are reset, you should now try with the top up.

Close the top. Latch it properly and try to roll the windows again.

8. If the windows go up to about 3" below the maximum and no further, the microswitch inside the window latch has failed. This is a known problem and about a $3 repair to reseat it.

9. To try this, unlatch the top, and put your finger in the part where the latch hook would catch.

This is the microswitch button. Push it in as far as it goes. Try the windows again. If they work now, your switch is loose.

10. Note - if you feel no resistance above, your switch is entirely loose.

You should feel/here a click when you push far enough.

11. If your windows roll up all the way, but don't drop down when you unlatch the top, or open the door, then the relay is not properly seated. Take the relay out and reseat it.

12. Last thing to check: if you push the window buttons there should be a voltage drain on the battery.

Use a voltmeter. If there is no voltage drain, then your window switches are not connected. Take out the ashtray, remove the single screw underneath, and pull out the ashtray unit which holds the window switches. Check if they are properly connected.

[adsach]

Thanks HenryV - both these TECH posts went into my permanent file

[TPrker]

11. If your windows roll up all the way, but don't drop down when you unlatch    the top, or open the door, then the relay is not properly seated.    Take the relay out and reseat it.

<{POST_SNAPBACK}>

This (11) means top relay prob but , same problem (the windows not dropping when opening the doors), can be related to other relay?

It happens to my car that, if I only pull very thight the door handles the windows drop, in other cases not happen and the windows don't drop (so e.g. if I close the door slamming it happen that the windows , being too high, crash on top frame...). I suppose there is a relay also under the handles....

EDIT: found the answer in the forum, many thanks all

Edited May 4, 2005 by TPrker

[skt]

8. If the windows go up to about 3" below the maximum and no further, the microswitch inside the window latch has failed. This is a known problem and about a $3 repair to reseat it.

What is or where is the window latch microswitch? Thank you

[Tool Pants]

Henry means the microswitch in the top latch.