Blower motor increases speed when I cross the county line?

[Cerberus]

I have a long commute and cross several counties to get the work location. I notice every day on the highway that my A/C blower increases speed (for just a minute then back to the speed setting set previously) as I pass the county line sign? I have witnessed this event nearly every day for the last 2 weeks. The only thing I have come up with is the different weather in each county.

One example:
Start county humidity 11%
Second county humidity 23%
Ending county humidity 14%

My thoughts on this. The vehicle is tracking the weather (Via my phone connection) and since there is a possibility the change in humidity can fog up the windows. I think in an attempt to mitigate this the vehicle sees the change in humidity and equalizes the new air with existing interior air (since it knows my GPS location/ county line). Please chime in if you have any alternative theories or know what may be going on here as this is all I can come up with.

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[Tbone289]

Um... Even if any of your weather tracking theory were true, I doubt very seriously that the AC system would see 24% as high enough humidity to warrant an increase in blower speed. In my area of the country where the annual humidity averages 71%, it would be at max blower power all of the time.

 

[justiz00]

I believe there is a humidity sensor above the rearview mirror.

 

[TP Mav]

I drive a 25MY and noticed that the AC randomly increases speed and blows harder at me. I've never noticed any trend to it, though.

 

[Scott Asheville]

Does your route change direction around that point? If it made the sun come in through the windshield, for example, then increased heating load might explain it.

 

[HeyBales]

Does your route change direction around that point? If it made the sun come in through the windshield, for example, then increased heating load might explain it.

Ohhh - good test.

So find a more shaded back road, and sneak across the county line - see if something out there notices anyway!

 

[The Real Maverick]

I have a long commute and cross several counties to get the work location. I notice every day on the highway that my A/C blower increases speed (for just a minute then back to the speed setting set previously) as I pass the county line sign? I have witnessed this event nearly every day for the last 2 weeks. The only thing I have come up with is the different weather in each county.

One example:
Start county humidity 11%
Second county humidity 23%
Ending county humidity 14%

My thoughts on this. The vehicle is tracking the weather (Via my phone connection) and since there is a possibility the change in humidity can fog up the windows. I think in an attempt to mitigate this the vehicle sees the change in humidity and equalizes the new air with existing interior air (since it knows my GPS location/ county line). Please chime in if you have any alternative theories or know what may be going on here as this is all I can come up with.

Naw.... that's just silly.

The human brain has trouble with coincidences.

For example; my code to get in the front door at WORK is the same four digits as the last four of my wife's SS number.

Weird at first. 1 in 10,000 chance, right?

But then my buddy. A math professor pointed out, 9,999 OTHER things happened in my life that went unnoticed before this one coincidence happened.

Sometimes you DO flip heads 5 times in a row. You just do.

Mine is always in manual. So this never happens to me. But in Auto the fan boosts every so often on a TIMER. I don't know what the time is.

But you do. If traffic is consistent you'll reach the same point in the road every day at the same time. Time it.

 

[Cerberus]

Does your route change direction around that point? If it made the sun come in through the windshield, for example, then increased heating load might explain it.

 

[Cerberus]

No same direction in the desert but it usually occurs at the same point of the trip within 1000 feet before or just as I pass the sign.

 

[Cerberus]

Um... Even if any of your weather tracking theory were true, I doubt very seriously that the AC system would see 24% as high enough humidity to warrant an increase in blower speed. In my area of the country where the annual humidity averages 71%, it would be at max blower power all of the time.

 

[Cerberus]

I agree I live in the desert and almost never see the window fog up unless it starts raining.

 

[Cerberus]

Ohhh - good test.

So find a more shaded back road, and sneak across the county line - see if something out there notices anyway!

 

[Cerberus]

lol I’m in the desert very few roads between towns usually one to choose from.

 

[Cerberus]

Naw.... that's just silly.

The human brain has trouble with coincidences.

For example; my code to get in the front door at WORK is the same four digits as the last four of my wife's SS number.

Weird at first. 1 in 10,000 chance, right?

But then my buddy. A math professor pointed out, 9,999 OTHER things happened in my life that went unnoticed before this one coincidence happened.

Sometimes you DO flip heads 5 times in a row. You just do.

Mine is always in manual. So this never happens to me. But in Auto the fan boosts every so often on a TIMER. I don't know what the time is.

But you do. If traffic is consistent you'll reach the same point in the road every day at the same time. Time it.

 

[Cerberus]

I do check the road waypoints to my time to gage my progress. lol

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