Hi, Two days ago I bought a 2000 996 Convertible. The seller said the top wouldn't go down, but with the help of searching this forum I managed to get it down, kind of.... The switch on the dashboard does not work, and when I push it the light in the instrument cluster flashes. Nothing happens. But, when I use the key in the door lock, the clam shell opens, windows go down, and the forward lock opens. but, the top itself it not moving and there is no sound from the hydraulic motor. I can lower the top manually, and then complete the clamshell going down with the key in the drivers door lock. Then it works the other way around too, exept the dashboard switch does not work, and I have to close the actual top manually. So, any idea where to start looking for problems? I figured it can't be the oil level, because then I should be able to hear the motor. Can the motor (or maybe I should call it pump?) be broken? And why does not the switch work? Thanks, Johan
Convertible top, different problems
Posted June 24, 2011 - 05:51 AM
Hi, Go to the DIY Section, there's a whole section on Cabriolet tops. I regularly add hydraulic oil to mine, to ensure it is adequately topped up, but the fact the dashboard panel is flashing indicates you have an electrical issue that you should take to a dealer or independent. It's actually a fairly simple set of mechanics, all in all, so if the motor is dead someone can tell you. Also, the way the mechanism works, each 'step' in the open and close process gets its cue from the previous completing, so if one of the early steps is failling the mechanism with fail. If I was you, and take this for what it's worth, I'd find a good local indie with cab top experience, as he'll keep you out of the exhorbitant diagnosis costs of a dealer. Hope this helps. -Alf
Posted June 24, 2011 - 01:13 PM
Thanks! So, do I stIll have an electrical problem when the convertible works better with the key in the drivers door lock? So the switch itself is not the problem? Regards, Johan
Posted June 25, 2011 - 08:47 PM
Doesn't MY2000 have to have the e brake set? Maybe the switch in the e brake is not making contact?
Posted August 22, 2011 - 05:43 PM
Johan, My 2000 just started doing the same thing. I had a problem with the hydraulic pump earlier this year. I filled the reservoir and then it worked fine. Now the switch on the dash causes the light to flash and the top doesn't actuate. The top works fine using the key in the door. I tried pulling the fuse but nothing changed. When I have some time I'll try removing the dash switch and checking it. Did you get anywhere on yours? It seems to me it's either the dash switch or the controller. Gene
Posted August 29, 2011 - 04:38 PM
I was unable to diagnose the problem, but after a week or so the controller fixed itself.
My 2000 just started doing the same thing. I had a problem with the hydraulic pump earlier this year. I filled the reservoir and then it worked fine. Now the switch on the dash causes the light to flash and the top doesn't actuate. The top works fine using the key in the door. I tried pulling the fuse but nothing changed. When I have some time I'll try removing the dash switch and checking it. Did you get anywhere on yours? It seems to me it's either the dash switch or the controller.
Posted August 31, 2011 - 03:40 PM
Had a similar problem with my 03 Cab only the top would not go up. Turned out the switch on the e brake was indeed bad. $150 at the dealer.
Posted September 25, 2011 - 04:34 AM
Thanks for the reply guys! I have a bunch of other problems with the car right now, so I haven't really had the time to fix this. Is the e brake switch the same for convertible as for coupé? I have one of these in the garage already.... Does the hydraulic motor make any sound when the oil level is low? Or is it disconnected by a oil level switch? Thanks, Johan
Posted September 25, 2011 - 07:25 AM
When my level dropped, I could hear the motor working but the top would go up and down very slowly. Within a few times using the convertible, I would no longer hear the motor working once the clam shell got into the correct position. After adding hydraulic fluid, everything worked perfectly.
Posted September 30, 2011 - 07:58 AM
Hi again, in my case it was the oil level, due to a leaking right hydraulic cylinder. It seems like a straight-forward fix, I just need to get it out and rebuilt. Thanks for all your input! Regards, Johan
Posted December 29, 2011 - 01:42 PM
Hi guys, So, I have spent some time occasionally to fix my convertible top. I have had all kinds of problems, due to PO's neglect. So far I have fixed 1. Repaired broken convertible top frame, the support for the rearmost part was broken on both sides. 2. Swapped out both hydraulic cylinders due to bad leaks. 3. Fixed the window frame lock microswitch with the superglued 2 mm plastic part fix. So now I basically only have one problem left, that actually is a new problem; When opening the top, it stops several times on its way back to the folded position. When it is all the way back, when the clam shell should close, it doesnt. The hydraulic pump for the top seems to try and fold the top even more, like there is a micro switch that cant feel that the top is folded. This was no problem before, when I lovered it manually the clam shell closed, and so did the side flaps. Fluid level is ok. Anyone who has an idea where I should look? Thanks, Johan
Posted January 04, 2012 - 01:10 PM
Found the problem! Just missed to attach the microswitch attached to the left side cylinder. So, FINALLY the tops works as it is supposed to do..... Almost. The fabric ends up outside the frame on the left side. Not all the way, just couple of inches. I will use the search function to find info on that one! Thanks, Johan
Posted January 04, 2012 - 06:01 PM
For the fabric not lining up, check my recent posts on the topic. You may have a replacement top, the GAHH ones have a spring in a pocket in the fabric itself, if it gets stuck the fabric would fold and fall correctly to align with the frames.
Posted January 07, 2012 - 11:43 AM
Thanks Dammad, great thread, I will check those things. Regards, Johan
Posted July 06, 2015 - 03:43 PM
I have followed all instructions for topping off the hydraulic fluid reservoir and have plug, and copper washer, removed. When I inserted the small diameter hose it seemed to be blocked by something and fluid would not go in. I then made a small probe out of wire, inserted it into the hole and there is definitely something in the way. Any ideas?
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