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Here is one that seems to have everyone stumped, and I was hoping that someone has a place for me to start looking, because I'm out of ideas.


I bought my 2004 cab and it must have been altered for the roof actuation.  It was one-touch up and down, and I didn't need to be stopped.  Very weird thing happened several months ago and I've been looking for a solution and I am stuck.  The roof now only works when the car is in motion.  That's right, only in motion.  If I stop the car, the roof stops it's transition.  First thing I did was to go online to see what aftermarket things are available.  I found two.  One piggy-backs in line with a connector at the control unit behind the rear passenger seat, and the other piggy-backs in line into the immobilizer below the seat.  Neither of those are on my car.  Earlier I thought it might be the syncing of the two flap motors, because at that time I didn't realize I could get it up or down with the car in motion.  When my Porsche shop went to sync the motors, the guy told me he got a weird fault.  With the car turned off, he was getting an error that the car was moving at 13mph.  He reset it and we tried the top standing still and the top cycled several times.  When I drove it home, the next day it would not transit again until in motion.Is there anything else in the DME, immobilizer or top controller that can cause this problem?  What other mods are out there?  The top controller seems to be an original Porsche part (see pic)


I'm willing to take it into Porsche and ask them to get it back to original condition, but I don't want them doing a swap-till-you-drop approach, which would kill me in cost.  I'd like to have a bit more targetted approach.  Anything else I can try?


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By "main connector" do you mean at the top controller behind the rear seat?  if so, which of the three connectors should it be in?.  It is not in the most outboard one, where all the Smarttop modules I saw on line were connected.

Edited by derohanes
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By "main connector" do you mean at the top controller behind the rear seat?  if so, which of the three connectors should it be in?.  It is not in the most outboard one, where all the Smarttop modules I saw on line were connected.

Check under the driver seat. My remote top module plugs into the main connector there.

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Thanks guys, but it's not in the left-most position of the controller behind the seat, and as I mentioned it is not on the immobilizer under the seat either.  I'm completely baffled.  I don't think that it is a bad Porsche module.  If a module went bad, it must be an aftermarket one, which what I'm trying to locate.  At one time it did operate in a one-touch mode and while moving.  So, something must have been altered someplace.  I wonder if it is a hack with no hardware involved.  Very strange.

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