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99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

Discussion summary

YOUR RESEARCH99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported repair

Clean acu plugs and battery terminals

Reported resolution
1
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 report a fix
1

1 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.

Reported fix · Original poster

Two days ago I had the same problem, cleaning ACU plugs and battery terminals solved the issue.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Clean acu plugs and battery terminals' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Clean acu plugs and battery terminals' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Clean acu plugs and battery terminals', supported by resolution reports in 1 discussions. 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 · 1 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check fuses, attempted

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 · Original poster

I've removed the alarm control unit, checked fuses, attempted to jump-start, and cleaned the terminals.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Clean terminals

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 · Original poster

I've removed the alarm control unit, checked fuses, attempted to jump-start, and cleaned the terminals.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Clean acu, the issue persists

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 · Original poster

Even after cleaning the ACU, the issue persists.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Fill car up

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 · Original poster

This morning I went to fill the car up with gas and initially it was not starting so I tightened up the terminals and was able to start the car, it was barely running, smoking, and in limp mode with the cel flashing,I attributed this to the aos which I just recently replaced and kept driving, the car stopped struggling the smoke went away and began to run smooth.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (8)

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

Clean acu plugs and battery terminals

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1

1 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.

Reported fix · Original poster

Two days ago I had the same problem, cleaning ACU plugs and battery terminals solved the issue.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Check fuses, attempted

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 · Original poster

I've removed the alarm control unit, checked fuses, attempted to jump-start, and cleaned the terminals.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Clean acu, the issue persists

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 · Original poster

Even after cleaning the ACU, the issue persists.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Clean terminals

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 · Original poster

I've removed the alarm control unit, checked fuses, attempted to jump-start, and cleaned the terminals.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Fill car up

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 · Original poster

This morning I went to fill the car up with gas and initially it was not starting so I tightened up the terminals and was able to start the car, it was barely running, smoking, and in limp mode with the cel flashing,I attributed this to the aos which I just recently replaced and kept driving, the car stopped struggling the smoke went away and began to run smooth.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Inspect acu, i found minimal corrosion

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 · Original poster

The car got wet inside due to a clogged drain plug, but after inspecting the ACU, I found minimal corrosion.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run smoking, and in limp mode

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 · Original poster

This morning I went to fill the car up with gas and initially it was not starting so I tightened up the terminals and was able to start the car, it was barely running, smoking, and in limp mode with the cel flashing,I attributed this to the aos which I just recently replaced and kept driving, the car stopped struggling the smoke went away and began to run smooth.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run smooth

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 · Original poster

This morning I went to fill the car up with gas and initially it was not starting so I tightened up the terminals and was able to start the car, it was barely running, smoking, and in limp mode with the cel flashing,I attributed this to the aos which I just recently replaced and kept driving, the car stopped struggling the smoke went away and began to run smooth.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Actions with reported resolution accounts (1)

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

Clean acu plugs and battery terminals

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1

1 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.

Reported fix · Original poster

Two days ago I had the same problem, cleaning ACU plugs and battery terminals solved the issue.

Original post Read captured discussion
99 5psd Won’t Start! - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

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

  • 986Forum: 1 discussions

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

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

Outcome without a verified action link

Even after cleaning the ACU, the issue persists.

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm experiencing difficulties starting my car despite installing multiple brand new batteries. I've removed the alarm control unit, checked fuses, attempted to jump-start, and cleaned the terminals. The car got wet inside due to a clogged drain plug, but after inspecting the ACU, I found minimal corrosion. Even after cleaning the ACU, the issue persists. Two days ago I had the same problem, cleaning ACU plugs and battery terminals solved the issue. In addition to this I have been unplugging the battery because the dash stays lit, leading to battery drain. This morning I went to fill the car up with gas and initially it was not starting so I tightened up the terminals and was able to start the car, it was barely running, smoking, and in limp mode with the cel flashing,I attributed this to the aos which I just recently replaced and kept driving, the car stopped struggling the smoke went away and began to run smooth. I drove to the gas station and turned off the car when I tried to turn it back on it would only click but not attempt to turn over. Currently when trying to start the car I hear one click and a faint high-pitched noise when attempting to turn, with slightly dimming headlights when turning the ignition. I plan to install a newly purchased ignition switch. Any other suggestions starting to get desperate?

This is a source reference. Confirm exact model applicability in the original material.