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Porsche Club GB

Found my first fault Doh!

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

Discussion summary

YOUR RESEARCHFound my first fault Doh!

Leading reported evidence

Check resistance

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 checked the resistance, but had nothing to compare it against.

Found my first fault Doh!
Frequently discussed work

Check fuse first

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 the rear screen was not working, then check the fuse first, and then the relay.

Found my first fault Doh!
Read full discussion summary

Leading evidence: 'Check resistance' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'issue' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check fuse first' (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 · 7 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace mirror and it's perfect

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

Forty quid later I swapped the mirror and it's perfect.

Found my first fault Doh!

issue

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 · Original poster

Edit* they are both not working, therefore it would seem a bit odd that they both failed together, so I think it is probably an issue with the circuit somewhere....

Found my first fault Doh!

supply or the actual unit

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 · Original poster

My first port of call I think was as mentioned - to check the voltage going to the mirror element to see if it was the supply or the actual unit, but as I mentioned, I never got around to it and it slipped my mind unit you just reminded me.

Found my first fault Doh!

Check fuse first

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 the rear screen was not working, then check the fuse first, and then the relay.

Found my first fault Doh!
Frequently discussed actions (7)

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

Check fuse first

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 the rear screen was not working, then check the fuse first, and then the relay.

Found my first fault Doh!

Check resistance

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 checked the resistance, but had nothing to compare it against.

Found my first fault Doh!

Check voltage at the mirrors, as they are all

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 it was, they you are right to check the voltage at the mirrors, as they are all on the same circuit.

Found my first fault Doh!

Check voltage going

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

My first port of call I think was as mentioned - to check the voltage going to the mirror element to see if it was the supply or the actual unit, but as I mentioned, I never got around to it and it slipped my mind unit you just reminded me.

Found my first fault Doh!

Check voltage yet

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

Haven't pulled off a mirror glass to check voltage yet but thought it was worth checking how you got on.

Found my first fault Doh!

Replace mirror and it's perfect

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

Forty quid later I swapped the mirror and it's perfect.

Found my first fault Doh!

Run car

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

Decided to run the car to work today to give her a nice long run as she has been stood since the weekend.

Found my first fault Doh!
Reported and suspected causes (2)

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

issue

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 · Original poster

Edit* they are both not working, therefore it would seem a bit odd that they both failed together, so I think it is probably an issue with the circuit somewhere....

Found my first fault Doh!

supply or the actual unit

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 · Original poster

My first port of call I think was as mentioned - to check the voltage going to the mirror element to see if it was the supply or the actual unit, but as I mentioned, I never got around to it and it slipped my mind unit you just reminded me.

Found my first fault Doh!
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.

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

  • Porsche Club GB: 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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Decided to run the car to work today to give her a nice long run as she has been stood since the weekend. This morning was cold, and whilst the car was in the garage the change in temperature from the garage to -3 outside made the wing mirror glass steam up. I popped the heated screen button on and the mirrors did not clear. Is there any known cause for the heated mirrors not working and does anyone know the troubleshooting sequence? (Fuse, electrics, glass/elements?). I'm assuming removing the glass may be the way to go and get a volt meter on the power supply to the mirror? But I'm not sure of the wiring diagram and how it's fed.... Thanks,

POST 2Original post

Do you know if the heated rear screen itself was working? If it was, they you are right to check the voltage at the mirrors, as they are all on the same circuit. If the rear screen was not working, then check the fuse first, and then the relay. Edit: You can download wiring dIagrams, which also show the fuse and relay assignments for your car from http://www.cannell.co.uk/Manuals.htm . They are a bit old, but fine for your '98 car.

POST 3 / ORIGINAL POSTEROriginal post

Cheers richard, and yes, rear screen working perfect. Perhaps a faulty element, or a broken circuit then /i would think. Edit* they are both not working, therefore it would seem a bit odd that they both failed together, so I think it is probably an issue with the circuit somewhere....

POST 4Original post

Sorry to dig up an old thread, but just wondering if you managed to solve this Steve? I've the same problem with rear screen working but both mirrors suddenly not working. Haven't pulled off a mirror glass to check voltage yet but thought it was worth checking how you got on. Thanks Greg

POST 5Original post

I'd be surprised if it's not the mirror. One of mine ceased working and it had a good feed. I checked the resistance, but had nothing to compare it against. Forty quid later I swapped the mirror and it's perfect. Makes the other one look a bit poor now though.

POST 6 / ORIGINAL POSTEROriginal post

Sorry for the late reply - sadly no, I was so busy sorting other things out that this totally slipped my mind! You've just reminded me of something I need to look at when I get chance My first port of call I think was as mentioned - to check the voltage going to the mirror element to see if it was the supply or the actual unit, but as I mentioned, I never got around to it and it slipped my mind unit you just reminded me. Cheers,

POST 7Original post

Thanks for replying Steve. I actually pulled my mirror glasses of yesterday and found that I do have power to both. Pulled the heated glass of my wife's passat and plugged that in and it immediately heated, so appears that I have two faulty mirror glasses. Might have to fork out for two new ones now! Greg

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