Change default setting for A/C?

[RichardnVA]

Every time I turn on the A/C in my 09 G37 the default setting seems to be to turn on the vents aimed at your feet. I prefer to have the upper dashboard vents on, and I have to manually hit the "Mode" button a couple of times to get the setting I want. Not a big deal, but I would think with all of the other programmable settings in the car that this would be something that could be set once and then it stays that way. It doesn't matter if I use the "Auto" on/off or the Fan "+" button, it always defaults to the floor vents. Anyone know how to change the default setting?

[Poyzinous]

you cant. Its programmed to blow at the feet because, first off, heat rises. Thats why in the summer, cold air blows at your face, so it settles downwards. Secondly, most people don't want hot air blasting into their faces, its uncomfortable so thats why it defaults to the floor.

[RichardnVA]

Thanks. Good to know. I hadn't really thought about the hot air in face. Since it's winter time, the warm air is what I want, but agree that it seems to make sense for the AC system to blow the initial "dirty" air at your feet and then adjust it when it's at the temp you want.

[BrandAidDesignG35]

I love the dual climate controls... My girl likes the heat, and I love the cold...

The climate controls are a little weird at first, but I've gotten used to it now

[Sentientbydesign]

Thanks. Good to know. I hadn't really thought about the hot air in face. Since it's winter time, the warm air is what I want, but agree that it seems to make sense for the AC system to blow the initial "dirty" air at your feet and then adjust it when it's at the temp you want.

It has nothing to do with "dirty" air. Your car has climate control. You set the temperature you want, it adjusts heat/ambient/cool as needed (though not very well). Heat blows through the lower vents, ambient through upper and lower, cooling through the upper only.

The vent selection is actually very smart as heat does rise, so the heat is blown at your feet and rises on it's own displacing the cooler air in the cabin until the air is mixed well.

Ambient air is blown through both sets of vents mostly for ventilation (you'll find that the fan speed never goes above low with ambient on auto).

Cool air falls, so A/C air is blown through the upper vents and displaces the warmer air and does the whole mix thing until the temperature is reached.

Question for Poyz. Is my body really that bad at gauging temperature, or is the thermostat in the Climate Control crap? I usually find that 78-80 is comfortable during the summer once the system has neutralized the interior temperature.

Other times, I have to set it around 70 or lower. This is especially true of times when the interior temperature was already moderate to begin with and the outside temperature is blazing. I understand that visible light is probably being absorbed by my skin and turned into infared radiation, but can't the system do a better job of analyzing interior and exterior temperatures and adjusting?

Also, when the outside temperature is low, but it's warm on the inside, I have to turn the temperature really far down to make it comfortable.

[LuckyLuke]

I like hot air blowing to my face..

[G_whizz]

I like hot air blowing to my face..

*farts*

[Poyzinous]

I like hot air blowing to my face..

You have serious issues...

Question for Poyz. Is my body really that bad at gauging temperature, or is the thermostat in the Climate Control crap? I usually find that 78-80 is comfortable during the summer once the system has neutralized the interior temperature.Other times, I have to set it around 70 or lower. This is especially true of times when the interior temperature was already moderate to begin with and the outside temperature is blazing. I understand that visible light is probably being absorbed by my skin and turned into infared radiation, but can't the system do a better job of analyzing interior and exterior temperatures and adjusting?Also, when the outside temperature is low, but it's warm on the inside, I have to turn the temperature really far down to make it comfortable.

Because in the cold we sit in the car with our sweater, jacket, trenchcoat, scarf, mittens, beanie, etc, we assume that setting the temp to 80* seems like a good Idea. Well, when the temp reaches 75, it'll still be blasting close to full power when we're comfortable. I have my temp set to 67* in the winter and never adjust it. Since I step outside with my jacket and lots of clothes, I dont want the inside of my car to be as warm as my house where I can comfortably walk around shirtless with a pair of shorts on. Some people fail to realise that. Some, like my mother, think that setting it to 90* and then lowering it down to 70 or so will make the car warm up faster to the desired temperature. No. NO. The system will blow at maximum allowable temperature and fan speed until the inside temperature is 3* away, when the system will begin to gradually reduce fan speed and automatically reduce air temperature untill the inside is at the right temperature. The summertime, same principle. Setting the system to 60 or 70 doesn't matter when the car is 124* inside. It will still blow as cold as possible untill the inside temp is approaching desired temp. Anyway Nate, make sure your ambient temp sensor isn't obstructed, as it monitors sunload to make up for heat/cold loss inside and adjusts temp and fan accordingly. The sensor is on the dash vent on the drivers side. also, make sure there isn't any sort of device aftermarket installed close to either of the temperature sensors in the car or close to the outside temperature sensor, as things giving off heat near them will confuse them a little. I had a customer that had some electronic thingy right over his little driver side temperature vent and the system always thought it was hotter than an oven inside. In any case, failure rate for the sensors and meters are like 10000 to one. I personally have only seen 2 fail. ever. So they are reliable. Also remember that sometimes when its cold outside, if the car is sitting in the sun, usually, since the windows are up, the hot air is floating in the upper half of the car, and the temp sensor is kinda low, by your knee, so the temperature variation can be 3 or 4 or even 8 degrees. Untill Infiniti decides to complicate their systems, (which they have, beginning with the 2011 models), it won't be perfect, but pretty damn good. I'll tell you this much, the climate control in my G is waaay better than the climate control in my old G20, which was still better than the system in my parents Buick, which was probably not competent enough for a refridgerator.

[LuckyLuke]

[telcoman]

Every time I turn on the A/C in my 09 G37 the default setting seems to be to turn on the vents aimed at your feet. I prefer to have the upper dashboard vents on, and I have to manually hit the "Mode" button a couple of times to get the setting I want. Not a big deal, but I would think with all of the other programmable settings in the car that this would be something that could be set once and then it stays that way. It doesn't matter if I use the "Auto" on/off or the Fan "+" button, it always defaults to the floor vents. Anyone know how to change the default setting?

There are two kinds of heat

1- There is the kind that ignites and burns down shanties.

2- There is the kind that excites and brings down panties.

---------------------------------------------------------------------------------------------

More on the subject of heat.

HELL EXPLAINED The following is an actual question given on a University of Arizona chemistry mid term, and an actual answer turned in by a student. The answer by one student was so 'profound' that the professor shared it with colleagues, via the Internet, which is, of course, why we now have the pleasure of enjoying it as well :

Bonus Question: Is Hell exothermic (gives off heat) or endothermic (absorbs heat)?



Most of the students wrote proofs of their beliefs using Boyle's Law (gas cools when it expands and heats when it is compressed) or some variant.

One student, however, wrote the following:

First, we need to know how the mass of Hell is changing in time. So we need to know the rate at which souls are moving into Hell and the rate at which they are leaving, which is unlikely.. I think that we can safely assume that once a soul gets to Hell, it will not leave. Therefore, no souls are leaving. As for how many souls are entering Hell, let's look at the different religions that exist in the world today.

Most of these religions state that if you are not a member of their religion, you will go to Hell. Since there is more than one of these religions and since people do not belong to more than one religion, we can project that all souls go to Hell. With birth and death rates as they are, we can expect the number of souls in Hell to increase exponentially. Now, we look at the rate of change of the volume in Hell because Boyle's Law states that in order for the temperature and pressure in Hell to stay the same, the volume of Hell has to expand proportionately as souls are added.

This gives two possibilities:

1. If Hell is expanding at a slower rate than the rate at which souls enter Hell, then the temperature and pressure in Hell will increase until all Hell breaks loose.

2. If Hell is expanding at a rate faster than the increase of souls in Hell, then the temperature and pressure will drop until Hell freezes over. So which is it?

If we accept the postulate given to me by Teresa during my Freshman year that, 'It will be a cold day in Hell before I sleep with you,' and take into account the fact that I slept with her last night, then number two must be true, and thus I am sure that Hell is exothermic and has already frozen over. The corollary of this theory is that since Hell has frozen over, it follows that it is not accepting any more souls and is therefore, extinct.... ...leaving only Heaven, thereby proving the existence of a divine being which explains why, last night, Teresa kept shouting 'Oh my God.'

THIS STUDENT RECEIVED AN A+

Telcoman

[zozoka1212]

*farts*

Bahahaha now that was good. LOL

Thanks. Good to know. I hadn't really thought about the hot air in face. Since it's winter time, the warm air is what I want, but agree that it seems to make sense for the AC system to blow the initial "dirty" air at your feet and then adjust it when it's at the temp you want.

My routine is at winter I get in the car and turn on the heat to the highest put it in manuall with the highest fan speed. Move all the air to the windshield. After about 2 minutes turn to the set I like 23 celsius and turn on auto.

In hot summer I do the other way around. Turn it to the coldest setting for about 2 minutes with the highest fan speed.

I don't usually wear winter jacket in winter.

[Poyzinous]

zozo, maybe you should read my post as well....everybody wants to blow hot air into luckys face but I made you all an essay!!!!!it is informative!!!

[zozoka1212]

LOL Pozi thanks for the informative post. Now I've read it 2 times.

The reason why I do that is when you start up the car fans won't go to the highest speed right away. It takes a minute or so when it is extremely cold or hot. I just don't like to wait a minute. What I do is go out to the car and turn it on do my "magic" as quick as possible and go back to the shop. Lock the doors and set the alarm. Than go to the car and turn the temp to my like.



Your turn.

[Poyzinous]

Your turn.

Read it a third time zozo!!! Read it till it uses up all your brain power and you're lookin like hmmm... I'm pretty sure it only takes about 10 seconds to go into full blast mode. The auto system will monitor all items, and then decide based on humidity, temp, sunload, park angle, solar winds and whether or not the groundhog saw his reflection in the community pond, if it'll go with recirculation or mixed air and the level of pressure for humidity and blah blah blah. Or you can just override it and go full blast and do what you do so you can set it to auto later. I'm just being too picky. I like my auto system. I don't interrupt her. I call her Stacy. I step in and say, "come on Stacy, its chilly in here! tell Mayra (the engine) to idle faster and get that coolant hot so you can warm me up! The seat heater is only good for my butt and balls!!" And she responds a few seconds later by slowly creeping up the fan speed and warming my toes. If only she could make my hot chocolate for me....