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911uk

manually closing convertible roof

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Original source
4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHmanually closing convertible roof

Leading reported evidence

Use mole grips

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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.

Performed · outcome unconfirmed

I removed the POT from the clamshell drive behind the seats and used Mole grips on my old clamshell drive square shaft to turn the clamshell drive manually, with the drive motor disconnected.

Original post Read captured discussion
manually closing convertible roof
Frequently discussed work

Replace shaft it sits

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

If you use this, you're supposed to replace the shaft it sits on as this can and is designed to twist to stop damage to other parts.

Original post Read captured discussion
manually closing convertible roof
Read full discussion summary

Leading evidence: 'Use mole grips' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'potentiometer' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace shaft it sits' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

potentiometer

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

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 suspect a cause
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.

Suspected cause

When my roof needed diagnosis, the issue was the potentiometer on the clamshell drive not showing the correct voltage once up, so the roof ECU wouldn't let the roof move, as it thought the clamshell wasn't fully up.

Original post Read captured discussion
manually closing convertible roof

Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Replace shaft it sits

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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
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.

Suggestion

If you use this, you're supposed to replace the shaft it sits on as this can and is designed to twist to stop damage to other parts.

Original post Read captured discussion
manually closing convertible roof
Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace shaft it sits

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

If you use this, you're supposed to replace the shaft it sits on as this can and is designed to twist to stop damage to other parts.

Original post Read captured discussion
manually closing convertible roof

Use mole grips

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.

Performed · outcome unconfirmed

I removed the POT from the clamshell drive behind the seats and used Mole grips on my old clamshell drive square shaft to turn the clamshell drive manually, with the drive motor disconnected.

Original post Read captured discussion
manually closing convertible roof
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

potentiometer

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause

When my roof needed diagnosis, the issue was the potentiometer on the clamshell drive not showing the correct voltage once up, so the roof ECU wouldn't let the roof move, as it thought the clamshell wasn't fully up.

Original post Read captured discussion
manually closing convertible roof

Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Coverage and how to read this overview

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.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Help I opened the roof earlier today and now it won't close.. The clam shell opens but the roof will not go up.. How do I manually close it . The owners manual is as clear as mud in its explanation..... Thanks

POST 2Original post

First, you'll need to remove the panels behind the rear seats. There's a bleed screw for the hydraulics on the left of centre. This can be undone with a hex and the roof can be manhandled up. There is also a Shiny round metal large screw with another hex, which is the manual release for the clamshell. If you use this, you're supposed to replace the shaft it sits on as this can and is designed to twist to stop damage to other parts. I removed the POT from the clamshell drive behind the seats and used Mole grips on my old clamshell drive square shaft to turn the clamshell drive manually, with the drive motor disconnected. When my roof needed diagnosis, the issue was the potentiometer on the clamshell drive not showing the correct voltage once up, so the roof ECU wouldn't let the roof move, as it thought the clamshell wasn't fully up. Wen lowering with this fault, it lets it move half way then stops as the clamshell POT had not reached the calibrated voltage required for "Clamshell fully up". There are, I think 6 different voltage levels between fully up and fully down, so the roof ECU can tell clamshell position and whether it's safe to move or continue to move the roof. You need PIWIS2 really to diagnose properly though as there are lots of prerequisites for the roof to operate, such as speed, handbrake, clamshell position etc, let alone there being enough fluid in the hydraulic pump.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for that..Once the rear panel behind the seats was removed and I discovered the location of the elusive Allen key.. it was fairly straight forward to get it back up.. Much to my relief

POST 4Original post

After all these years .. closing or opening the ctl still confuses me and i have to read the manual , roof i get but the ctl .. sigh .

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