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Convertible top will not close

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Hi all,

My 2003 996 cabrio has the following intermittent problem:

When I try to close the top via the dashboard switch, the roof cover opens but then the process stops - the top does not start moving up/forward. This happens every now and then, and usually if I open the top and close it again it works.

Other than that the roof is working fine - no noises, not struggling at all etc.

I assume the problem is with some kind of sensor that tells the car that roof cover is fully open, but I cannot find where that sensor is to check if it working properly.

Any ideas?



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  • Admin


1 - Rocker switch

2 - Warning light

3 - Micro-switch, latching hook (windscreen frame)

4 - Micro-switch, convertible-top latch (convertible-top side)

5 - Potentiometer, convertible-top interrogation

6 - Control module

7 - Micro-switch, convertible-top compartment lid (locked)

8 - Potentiometer, convertible-top compartment lid interrogation

9 - Micro-switch, left/right rear section flap up and down The convertible top is actuated if:

8 Terminal 15 is connected via ignition.

- The parking brake input is connected to ground (parking brake engaged).

- No speedometer signals greater than 5 km/h (3 mph) are present.

- Engine compartment lid is closed (input not at ground potential).

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