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Convertible Top Won't Close -Nothing Happens when pushing switch

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Old 06-17-2018, 12:10 AM
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michaelo
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Default Convertible Top Won't Close -Nothing Happens when pushing switch

Hello Everybody,

Helping a buddy out with his 1999 Carrera convertible. The top is currently open and won't close. When he pushes the button to close the top nothing happens. No movement, no power,,,,nada. Not even a light on the dash.

The e-brake is up, the car is on, the shifter in park and still nothing happens. When I put the key in the door and turn it to the left for three seconds, the windows retract and that's it. Other than that everything else works great.

Thoughts?
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Old 06-17-2018, 12:17 AM
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boisenelson
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Check this fuse first and foremost...sounds like a power supply issue:

D3 30A CONVERTIBLE TOP DRIVE, SUN ROOF
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Old 06-17-2018, 12:38 AM
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Porschetech3
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When you pull the hand brake up, does the "brake" light on the dash lite up?
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Old 06-17-2018, 12:57 AM
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My 996 Cab is in my offsite garage. I'll check it in the morning and let you know if you don't get confirmation from someone else tonight.
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Old 06-17-2018, 01:19 AM
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michaelo
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Originally Posted by Porschetech3 View Post
When you pull the hand brake up, does the "brake" light on the dash lite up?
Yes it does light up on the dash when I pull it up.
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Old 06-17-2018, 01:43 AM
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Originally Posted by michaelo View Post
Yes it does light up on the dash when I pull it up.
Then check the fuses, and hook up a Durametric and see if you can communicate with the Top Control Unit..
Oh, and make sure the engine compartment lid is properly shut...
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Old 06-17-2018, 01:51 AM
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Originally Posted by Porschetech3 View Post
When you pull the hand brake up, does the "brake" light on the dash lite up?
Thought this was from the OP. Original poster, check the fuses as replies have noted.
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Old 06-17-2018, 05:30 AM
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Dharn55
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Is the engine lid ajar? This will prevent the top from operating.
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Old 06-17-2018, 01:11 PM
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michaelo
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The fuse is good. I switched it with the other 30amp fuse (rear windows) and they go up and down fine. I don't have a Durametric at the moment unfortunately. Would the next step be to check the switch on the dash? Can I swap switches to see if that is the culprit?
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Old 06-18-2018, 12:36 AM
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I think the dash switch is bad, it lost its 'click' when I push it to close the top.
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Old 06-18-2018, 11:05 AM
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wyovino
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If it's not working via the key in the door, the dash switch is not likely the problem. You're not releasing the key after three seconds, right?
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Old 06-18-2018, 05:59 PM
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michaelo
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I am holding they key much more than three seconds, the windows go down and nothing else happens. No movement from anything else. No light on the dash either. Nada. Handbrake is up (light is on the dash), trunk engine lid is closed as well.
Very odd indeed.
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Old 06-18-2018, 06:04 PM
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The top will work without the handbrake being engaged if you use the key in the door. If it's not working from the door, your handbrake switch and the dash switch can probably be eliminated as the cause.

I just tested mine by opening the engine lid. The key in the door wont even lower the windows. Since your windows do go down, I think you can eliminate the engine lid switch and the door switch too.

Have you checked the hydraulic fluid?
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Old 06-18-2018, 06:15 PM
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Look in the owners manual and do the " manual release of top latch", then hit the button and see if the top does the rest of the opening function. You could have a faulty top latch release motor.
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Old 06-18-2018, 10:44 PM
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michaelo
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Originally Posted by Porschetech3 View Post
Look in the owners manual and do the " manual release of top latch", then hit the button and see if the top does the rest of the opening function. You could have a faulty top latch release motor.
The top is already open in the down position, the problem is that it won't close. I press the button and nothing happens. Good thing I have a garage.
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