A/C in defrost mode cheat code.

bobby2002S2K · 10-27-2007, 03:12 PM

Hey guys, I've always wondered how to deactivate the A/C in defrost mode and came across this post on another site i did it and it worked, very excited about it because it always annoyed me. so here it is.

To deactivate automatic a/c feature on a 2002+ S2000:

1) Turn the ignition switch "on," but dont start the car.
2) Turn fan speed off.
3) Turn temperature knob all the way to the left (blue area).
4) Turn vent knob to all the way to the left (panel position).
5) Turn the ignitions switch "off."
6) Hold down both air recirculation button and a/c button while turning the ignition switch "on." Nothing lights up initially, keep waiting. The orange air recirculation indicator on the button will start flashing.
7) Continue holding both buttons until the orange air recirculation indicator stops flashing, then let go.

Java Junky · 10-27-2007, 07:22 PM

Thanks Bob, that's one'a those things that always bothered me when I was in the middle of it, but never so much that I'd spend the time to check it out.
'Much obliged.
Be well.
Java

mzk784 · 10-27-2007, 08:27 PM

cool, I will try that, but can you go back to the factory default by the same process ? and do u have any problems turning the AC on and off in defrost mode ?

Scooter · 10-27-2007, 10:27 PM

As good as the engineering is on this whole car, I gotta wonder why they decided it should be on in the first place???

Is the a/c actually on or just the light for some reason?

Cheers,
=scoot

kgf3076 · 10-28-2007, 06:48 AM

The a/c is on to help dehumidify the air inside the car (the main source of the fog the defroster is removing)...it is on and it does help. I don't even bother turning off the a/c during the winter, just change the temperature settings.

jagg · 10-28-2007, 08:14 AM

seems like an odd feature to have in the car. i figure it has the ability to be disabled for some particular hvac test procedure. since you've done this , does everything else work the way it used to ? You can still turn on the a/c, and off again at will, even when in defrost mode?
thanks for the info bobby. i'm intrigued. maybe i can come up with a reason for why this is possible. ok, i'll be looking for the reason why this is so, an I'll report back as soon as i can.
As I was?
thanks sarge.
regards,
jagg

bobby2002S2K · 10-28-2007, 03:38 PM

Quote:

Originally Posted by jagg

seems like an odd feature to have in the car. i figure it has the ability to be disabled for some particular hvac test procedure. since you've done this , does everything else work the way it used to ? You can still turn on the a/c, and off again at will, even when in defrost mode?
thanks for the info bobby. i'm intrigued. maybe i can come up with a reason for why this is possible. ok, i'll be looking for the reason why this is so, an I'll report back as soon as i can.
As I was?
thanks sarge.
regards,
jagg

I dont know if there is a way to go back to default yet i'm sure you can probably just repeat the same steps? ANywho once you have done the step the next time you turn on defrost the a/c light will still come on as normal but now you have to option to turn it off and back on as you wish. so there is really no need to go back default.

fomoco · 06-11-2009, 10:05 PM

thats funny.. last year i could turn it on/off by pushing the botten. this year it stays on no matter how many time i press it. i took the battery out of the car for winter storage. so i gather the computer reset. thanx for the info

TheCarGuy2021 · 06-12-2009, 09:03 AM

You want the a/c ON in defrost mode. It DRAMATICALLY increases the ability for the air to absorb the moisture on the windows as the a/c dehumidifies the air. Your defrost mode will not work nearly as well with the a/c off. On humid days I turn the a/c on while using the heater to make the cabin not as sticky, too. There is nearly no effect on temperature of the heater if the a/c is on.

takeshi · 06-15-2009, 01:43 PM

Quote:

Originally Posted by Scooter

As good as the engineering is on this whole car, I gotta wonder why they decided it should be on in the first place???

Is the a/c actually on or just the light for some reason?

It probably doesn't matter for you since you're in Vegas but it makes a tremendous difference in places like Houston.

Jim21680 · 09-26-2009, 09:59 AM

WOW! wow. wow. wow. wow. wow.

This is awesome - who thinks of this stuff????

Anyway, a lot of you guys probably already know of this. But I got it from one of the most useful forum pages I've come across yet.
http://www.s2katlanta.com/forum/showthread.php?t=909

desmo4 · 09-26-2009, 02:30 PM

The a/c with defrost was absolutely necessary when I lived in SF.

Jonathan

fltsfshr · 09-26-2009, 03:04 PM

Quote:

Originally Posted by Jim21680

WOW! wow. wow. wow. wow. wow.

This is awesome - who thinks of this stuff????

Anyway, a lot of you guys probably already know of this. But I got it from one of the most useful forum pages I've come across yet.
http://www.s2katlanta.com/forum/showthread.php?t=909

Cool

One of my old posts is in there.

fltsfshr

Kalm_Traveler · 10-02-2009, 12:27 PM

If you're trying to defrost the windows you will want the A/C running.

Seems that many people mistakenly think that A/C = cold air, which is not all the system can do.

True, while on the Cold temperature settings it does cool the air in the system, but if you have the temperature knob on hot, all it will do is dehumidify the air (remove moisture) which is exactly what you are trying to do when 'defrosting' your windows.

10-27-2007, 03:12 PM	#1 (permalink)
bobby2002S2K Wisdom begins in wonder. Join Date: Dec 2006 Location: Lorton,VA Posts: 529	A/C in defrost mode cheat code. Hey guys, I've always wondered how to deactivate the A/C in defrost mode and came across this post on another site i did it and it worked, very excited about it because it always annoyed me. so here it is. To deactivate automatic a/c feature on a 2002+ S2000: 1) Turn the ignition switch "on," but dont start the car. 2) Turn fan speed off. 3) Turn temperature knob all the way to the left (blue area). 4) Turn vent knob to all the way to the left (panel position). 5) Turn the ignitions switch "off." 6) Hold down both air recirculation button and a/c button while turning the ignition switch "on." Nothing lights up initially, keep waiting. The orange air recirculation indicator on the button will start flashing. 7) Continue holding both buttons until the orange air recirculation indicator stops flashing, then let go. __________________ I still cant get my foot off the floor and its been over a 2yrs now

10-27-2007, 07:22 PM	#2 (permalink)
Java Junky Resident Curmudgeon Join Date: Jun 2005 Location: Joisey Posts: 6,628	Thanks Bob, that's one'a those things that always bothered me when I was in the middle of it, but never so much that I'd spend the time to check it out. 'Much obliged. Be well. Java __________________ In life-long pursuit of that most mythic of beasts: the ever-elusive perfect corner. Well . . . that, r' at least a whole lodda clear spin-out room.

09-26-2009, 09:59 AM	#11 (permalink)
Jim21680 Senior Member Join Date: May 2009 Location: Philadelphia, PA Posts: 365	WOW! wow. wow. wow. wow. wow. This is awesome - who thinks of this stuff???? Anyway, a lot of you guys probably already know of this. But I got it from one of the most useful forum pages I've come across yet. http://www.s2katlanta.com/forum/showthread.php?t=909 __________________ Last edited by Jim21680; 09-26-2009 at 10:01 AM.

09-26-2009, 02:30 PM	#12 (permalink)
desmo4 Senior Member Join Date: Oct 2007 Location: Modesto, CA Posts: 1,087	The a/c with defrost was absolutely necessary when I lived in SF. Jonathan __________________ MY 2000 Mugen Air box, Headers, Exhaust, ECU, Pressure Plate,LSD, Radiator cap NZ Dampers, Thermo SW and Thermostat. Samco intake pipe and radiator hoses, Swift sway bars, Stillen rotors w/ M-tech extreme pads. BBS JDM Forged Wheels.w/ Potensa Re=01R's Nextgear Intake manifold gasket, SPA gauges, Alpine IDA-X001,KCE-350Bt BT Adapter, Focal 165 K2P speakers, Phoenix Gold ZX475Ti, Recaro Profi SPG w/Sparco 6 pt

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

10-27-2007, 08:27 PM	#3 (permalink)
mzk784 Junior Member Join Date: Jul 2007 Posts: 13	cool, I will try that, but can you go back to the factory default by the same process ? and do u have any problems turning the AC on and off in defrost mode ?

10-27-2007, 10:27 PM	#4 (permalink)
Scooter Senior Newbie Join Date: Oct 2007 Location: Las Vegas Posts: 1,587	As good as the engineering is on this whole car, I gotta wonder why they decided it should be on in the first place??? Is the a/c actually on or just the light for some reason? Cheers, =scoot

10-28-2007, 06:48 AM	#5 (permalink)
kgf3076 Raconteur Join Date: Oct 2006 Location: We might be sharing a time zone (but it's doubtful) Posts: 1,776	The a/c is on to help dehumidify the air inside the car (the main source of the fog the defroster is removing)...it is on and it does help. I don't even bother turning off the a/c during the winter, just change the temperature settings.

10-28-2007, 08:14 AM	#6 (permalink)
jagg Senior Member Join Date: Sep 2007 Location: The Endless Mountains Posts: 3,234	seems like an odd feature to have in the car. i figure it has the ability to be disabled for some particular hvac test procedure. since you've done this , does everything else work the way it used to ? You can still turn on the a/c, and off again at will, even when in defrost mode? thanks for the info bobby. i'm intrigued. maybe i can come up with a reason for why this is possible. ok, i'll be looking for the reason why this is so, an I'll report back as soon as i can. As I was? thanks sarge. regards, jagg

06-11-2009, 10:05 PM	#8 (permalink)
fomoco Junior Member Join Date: May 2008 Posts: 14	thats funny.. last year i could turn it on/off by pushing the botten. this year it stays on no matter how many time i press it. i took the battery out of the car for winter storage. so i gather the computer reset. thanx for the info

06-12-2009, 09:03 AM	#9 (permalink)
TheCarGuy2021 Car Dummy Join Date: May 2008 Location: Michigan Posts: 803	You want the a/c ON in defrost mode. It DRAMATICALLY increases the ability for the air to absorb the moisture on the windows as the a/c dehumidifies the air. Your defrost mode will not work nearly as well with the a/c off. On humid days I turn the a/c on while using the heater to make the cabin not as sticky, too. There is nearly no effect on temperature of the heater if the a/c is on.