6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDefrost always on?
Leading reported evidence
Set system
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
The method I have arrived at is to set the system to max cooling and recirculate, then use the blower speed manually to control cabin comfort level.
Leading evidence: 'Set system' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Set system' (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.
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
The method I have arrived at is to set the system to max cooling and recirculate, then use the blower speed manually to control cabin comfort level.
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.
6 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 · 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: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So with a/c on, set to dash, its still,blowing out the defrost as well, which causes the windshield to fog. What would cause this? I know of other cars, the controld are vacuum controlled. Same here?
The diverter plate in the dash is supposed to be covered with a thin foam. Over time/temp/humidity the foam breaks down and blows out of the vents (perhaps you've noticed this). In anycase, once the foam is gone, the plate has big holes in it so the air diversion is greatly compromised (allowing moist and dry air to blend together)... This is most likely what you're experiencing. If you can get in there and cover up the holes with some aluminum tape or something similar you'll probably be ok...
Assuming HOT and high humidity day wherein condensate forms on the exterior windshield surface.
DANGEROUS in the evening, late evening, when it might be mistaken for fog... Only had it happen a few times, Florida and Alabama.
Once the cabin climate as monitored by the IAT approaches the temperature the 996 climate control system switches to all outflow ducts open.
According to the factory this is done to avoid the discomfort of having MASSIVE cool airflow to your face and upper body from only the dash ducts. method of dispersing the airflow throughout the system.
Best procedure to prevent "CHILLING" of the windsheild is to select and then deselect the windshield defrost/defog/demist airflow mode.
The method I have arrived at is to set the system to max cooling and recirculate, then use the blower speed manually to control cabin comfort level. Slightly increases MPG and removes condenser heat load to the radiators.
this is exactly what is happening, and i am in florida.
i do not use the automatic temp control, i set it to a temp, and do the manual fan control. i have tried switching on and off the, upper, middle, and lower controls, but it seems to end with the same condensed windshield. is there a fix? or is it really "broken"? either way, i wish i could stop it from happening
If turning the defrost/defog/demist outlet "on" and then "OFF" doesn't block system airflow to the windshield you likely have some sort of failure.
The immediate answer is lay something, towel, magazines, etc, over the outlets.
NOTE: If the OAT and RH are both extremely high the
COOL
cabin atmosphere might result in this effect.
This is a source reference. Confirm exact model applicability in the original material.
