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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHChanging from Fahrenheit to Celsius without computer?
Leading reported evidence
Replace by pressing the recirculating air and + button simultaneously
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Performed · outcome unconfirmed
On the AC control head though it can be changed by pressing the Recirculating air and + button simultaneously.
Changing from Fahrenheit to Celsius without computer?
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Leading evidence: 'Replace by pressing the recirculating air and + button simultaneously' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace a/c....but yet a bit discouraged by the in-gauge issue' (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.
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Replace a/c....but yet a bit discouraged by the in-gauge issue
Suggestion or failed attempt
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Suggestion · Original poster
I'm eager to test the change for the A/C....but yet a bit discouraged by the in-gauge issue.
Changing from Fahrenheit to Celsius without computer?
Replace between mph/kph can be done
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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.
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Suggestion
I have the computer so I don't know if it is tied into this, however changing between mph/kph can be done on my car by turning the clock button (clockwise I think) and holding it for a few seconds.
Changing from Fahrenheit to Celsius without computer?
Replace c over
Suggestion or failed attempt
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Suggestion
Several attempts were made with the PST2 to change C over to F on the OBC display without any luck.
Changing from Fahrenheit to Celsius without computer?
Replace digital speedometer display
Suggestion or failed attempt
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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.
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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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Suggestion
Changing the digital speedometer display to kph does not change the OBC display.
Changing from Fahrenheit to Celsius without computer?
Replace between mph/kph can be done
No successful repair reported for this finding.
0
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
I have the computer so I don't know if it is tied into this, however changing between mph/kph can be done on my car by turning the clock button (clockwise I think) and holding it for a few seconds.
Changing from Fahrenheit to Celsius without computer?
Replace temperature indicators
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
I have purchased a used 996 (1999) but since I am non-US and not too used to the F-degrees I would like to change the temperature indicators to C-degrees.
Changing from Fahrenheit to Celsius without computer?
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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.
9 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 · 1 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have purchased a used 996 (1999) but since I am non-US and not too used to the F-degrees I would like to change the temperature indicators to C-degrees. This concerns both the in-gauge outside temperature and for the A/C. Does anybody know how....my authorised porsche service center did not know a simple fix. Anything available like changing miles/h-to-km/h?
Thanks for your help,
Hans in Boston
According to the 1999 Technical Introduction manual "The display cannot be switched between RoW and USA units." This is pertaining the the guage displays.
On the AC control head though it can be changed by pressing the Recirculating air and + button simultaneously.
Thanks for a super quick reply. I'm eager to test the change for the A/C....but yet a bit discouraged by the in-gauge issue. Perhaps there is a work around that an authorized service place could do (I do not care if it says F or C in the dash, as long as it is C). Metric makes more sense to me.
Thanks again for the A/C fix!
Best regards,
Hans in Boston
I have a tough time with "the math" so rather then do arithmatic (all that I can handle) I use at little chart that translates. -40 is the only temp where you don't have to figure things out.
I have the computer so I don't know if it is tied into this, however changing between mph/kph can be done on my car by turning the clock button (clockwise I think) and holding it for a few seconds.
We have a California owner who bought a used 1997 Canada Boxster which displayed C on the OBC. Several attempts were made with the PST2 to change C over to F on the OBC display without any luck. Except for the 2 extra gauges a 1999 996 instrument cluster is the same as a 1997 Boxster.
If you compare the part numbers for a Canadian cluster they are different than a US cluster. A UK cluster is a hybrid. The analog speedometer is in miles but the OBC temp display is in C.
Changing the digital speedometer display to kph does not change the OBC display.
Thank you everyone for your responses. I think the best? for me is to change the entire instrument cluster. Does anyone know if part 996 641 115 03 70C will fit a 996(C2) from 1999? It is Canadian dials in black...consequently in km/h and also C-degrees. But it might be only for C4 between years 01-03...
Thanks again,
Hans in Boston
It is a Canadian/metric cluster for a pre 2001 C4. C4 cluster has problems when in a C2 or Boxster due to the fuel gauge since there is a different fuel tank, and there is no fix I know of.
This is a source reference. Confirm exact model applicability in the original material.
