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C4S Coupe - humidity in cabin when it rains

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

Discussion summary

YOUR RESEARCHC4S Coupe - humidity in cabin when it rains

Leading reported evidence

Replace i believe

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
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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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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Performed · outcome unconfirmed · Original poster

I believe that the pollen filter was changed as part of my recent OPC 48k service.

C4S Coupe - humidity in cabin when it rains
Frequently discussed work

Check cabin filter(below windshield

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
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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

all the 996's I have ever had or come across do the same thing, but check the cabin filter(below windshield on passenger side is not soggy as it can make the problem worse.

C4S Coupe - humidity in cabin when it rains
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Leading evidence: 'Replace i believe' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check cabin filter(below windshield' (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.

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1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check cabin filter(below windshield

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

all the 996's I have ever had or come across do the same thing, but check the cabin filter(below windshield on passenger side is not soggy as it can make the problem worse.

C4S Coupe - humidity in cabin when it rains

Check drains

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

turning the air con on and off can also make it worse as moisture builds up on the evaporator, either leave it on or turn it off and crack a window a 1/4 inch, and check the drains from this are not blocked(unlikely) Apart from that small cabin, great big engine under the rear means condesation can lurk here as well.so no wonder they steam up.

C4S Coupe - humidity in cabin when it rains

Check none of the drainage holes are blocked

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

There have been various posts about similar probelms and one suggestion was to check none of the drainage holes are blocked

C4S Coupe - humidity in cabin when it rains

Check water leak anywhere

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

Have you checked for a water leak anywhere?

C4S Coupe - humidity in cabin when it rains
Frequently discussed actions (5)

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

Check cabin filter(below windshield

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

all the 996's I have ever had or come across do the same thing, but check the cabin filter(below windshield on passenger side is not soggy as it can make the problem worse.

C4S Coupe - humidity in cabin when it rains

Check drains

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

turning the air con on and off can also make it worse as moisture builds up on the evaporator, either leave it on or turn it off and crack a window a 1/4 inch, and check the drains from this are not blocked(unlikely) Apart from that small cabin, great big engine under the rear means condesation can lurk here as well.so no wonder they steam up.

C4S Coupe - humidity in cabin when it rains

Check none of the drainage holes are blocked

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

There have been various posts about similar probelms and one suggestion was to check none of the drainage holes are blocked

C4S Coupe - humidity in cabin when it rains

Check water leak anywhere

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

Have you checked for a water leak anywhere?

C4S Coupe - humidity in cabin when it rains

Replace i believe

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 believe that the pollen filter was changed as part of my recent OPC 48k service.

C4S Coupe - humidity in cabin when it rains
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.

10 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 · 0 adjusted by outcome qualification.

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

Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I've noticed that the humidity increases drammatically in my C4S coupe when it rains, so I'm forced to switch the aircon on. I've noticed that the bonnet seat that covers the top of the headligts and bonnet catch is torn so I wonder if this has anything to do with it? Any members got any other ideas :?: cheers Ray

POST 2Original post

Have you checked for a water leak anywhere? Someone on Pheads has just complained of a leaky sunroof. Check you rear floormats just in case.

POST 3 / ORIGINAL POSTEROriginal post

I dont have a sunroof and no sign of wet mats etc. I read somewhere about water getting into the cabin air filter somehow ..................

POST 4Original post

There have been various posts about similar probelms and one suggestion was to check none of the drainage holes are blocked :dont know: http://911uk.com/viewtopic.php?t=41006&postdays=0&postorder=asc&highlight=drains&start=13

POST 5Original post

Make sure your pollen filter is not blocked as in extreme cases there is such poor airflow that it can affect humidity significantly during damp weather.

POST 6 / ORIGINAL POSTEROriginal post

I believe that the pollen filter was changed as part of my recent OPC 48k service. thx for the suggestion. I suspect that water is getting into the filter housing somehow though.........

POST 7Original post

Very strange, I was out in my 996 C4S coupe last night in the rain and thought exactly the same thing. Ended up turning on the AC to de mist it!

POST 8Original post

The weather was pretty extreme around our way last night and our car suffered a little too. I just put it down to the water that got into the car when I put the kids in the back (I had to towel off the seats and the door cards). The biggest giveaway to water leaking into the car is that you get excessive condensation when it isn't raining as the water is still in the carpets and the soundproofing.

POST 9Original post

Same problem here - I don't see it as a fault; more of an irritant due to the weather/humidity.

POST 10Original post

misting up Hi all the 996's I have ever had or come across do the same thing, but check the cabin filter(below windshield on passenger side is not soggy as it can make the problem worse. turning the air con on and off can also make it worse as moisture builds up on the evaporator, either leave it on or turn it off and crack a window a 1/4 inch, and check the drains from this are not blocked(unlikely) Apart from that small cabin, great big engine under the rear means condesation can lurk here as well.so no wonder they steam up.

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