2005 Boxster 2.7 electrical issues; windows and roof

[atld]

Good morning,

I have an unusal issue with my 2005 Boxster that have recently developed:

-Driver side window. The window will lower and raise based on door position as normal and will come down 25% when I release the convertible top lever, but will only lower with the door switch. I cannot get it to raise back up.

Does anyone know how the electrical system is wired for the windows? I.e. does the switch input to a computer which triggers the window motors, or does the switch directly power the window relay.

Additionally, just last week I started having a similar issue with my convertible top. Top will open when the switch is pressed, but will not close. I removed the switch and tried to jump the harness to bypass the switch. Same thing, I can get it to open, but will not close.

Are there known issues that could cause this type of problem? Do the switches go bad, or is there a relay involved that might have failed...

Seems odd that the two problems developed relatively close to each other...

I would appreciate anyone's thoughts.

BTW, what does the computer below the driver's side seat control?

Thanks,

Adam

[Loren]

The window problem is likely a worn out window regulator (cable). Fairly common.

Check the top mechanicals for binding, bent parts, or other damage.

If your car is LHD then the control box under the drivers seat is the alarm systems, drive block, and central locking control.

[1schoir]

Adam:

Check for moisture or water under the driver's seat and in the foam underpadding of the carpet behind the driver's seat. If the drain holes in the convertible top well are clogged or the door seal in between the door panel and the door skin is not sealed properly, you will get water under the seat and that can cause many problems. IIRC, the central alarm control unit under the driver's seat can affect the window operation.

Regards, Maurice.

Edited November 1, 2011 by 1schoir