2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHupgrading convertible control module on '99 996
Leading reported evidence
Check other microswitches all seem functional
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
Checked the other microswitches all seem functional.
Leading evidence: 'Check other microswitches all seem functional' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check other microswitches all seem functional' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
Filled the hydraulic fluid, replaced top latch with unit from 997.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Performed · outcome unconfirmed · Original poster
Filled the hydraulic fluid, replaced top latch with unit from 997.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
I removed it and put it on an ohm meter and it did show change with movement, but I decided to replace it.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi everyone,
I have been having the convertible top issues that many have described. Here's what I have done. Filled the hydraulic fluid, replaced top latch with unit from 997. Sunset porsche said the 997 unit would work in place of the 996 with the wiring adapter they provide. Seems to be working as hook extends and closes appropriately. Checked the other microswitches all seem functional. Set the potentiometer at 6.2k ohms with roof in service position. Clamshell latches are fine. Ran the calibration with Durametric. Roof goes from open to closed and then open again just fine, side flaps and clamshell open and close as they should - all mechanicals seem OK. So it seems it all works when given signals from the Durametric. But calibration does not complete, settings are not stored in control module. Have done this with two laptops with XP and windows 8. Same behavior. I end up quitting the program as the calibration never completes. Now when I close the roof, the side flaps, clamshell etc all move correctly but the top latch does not complete the cycle. and keeps unlatching and relatching as others have described. I tried pushing the microswitch on top of the windshield as has been suggested for the 996 unit if the plastic hook cover comes off. But the latch seems to trigger the microswitch just fine. I can hear it click, and pushing with a toothpick does not help. I can stop the roof when the top latch is retracted, so the top is closed but the windows do not go up as it has not finished the complete cycle. I can put the front windows up using the window controls but the rear ones will not budge as it thinks the top is down. The Durametric can calibrate the top on a 996 but has limited other functions using the V10 module. On later model cars the Durametric can read values and perform individual functions using the CONV module. So it would be great if I could put a later model control module in the 996 so I could get better diagnostics. Has anyone put a 997 or later control module in a 996? Would it work (like the top latch did)? Or I could buy a used 996 module. Or I could go to a dealer and have them use the Porsche software.
Thanks for any advice. Cheers, Nick
Hello Nick. Just happened to see your post. I had a similar problem with my 2002 C2. The top would close and latch, and then immediately unlatch. The rear windows would not work. My Durametric indicated a fault with the top potentiometer (on the driver's side, which tells the controller the exact position of the top). I removed it and put it on an ohm meter and it did show change with movement, but I decided to replace it. It seemed to be a cheaper fix than a controller. Installed the new one and after resetting the clamshell pot, it all worked. Good luck with your fix.
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