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8th Gen Honda Civic 2006 and up is the 8th Generation Honda Civic. It adds a new look to the Civic line-up. A really smooth front end separates it from previous generations while still carrying the reliability of the Civic name.

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Old 03-19-2009   #31 (permalink)
butch33
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Re: Honda defroster reprogramming

I guess this explains why I'm freezing my nuts off in my new 09 dx-g I bought last week .seems to take a long time to warm up even though blower is on full blast and heat is set to highest .

so let me get this straight

in a nutshell -the ac green indicator light doesnt come on even though the ac is on while the heater/cool function is on defrost or defrost/floor mode ?

my 99 did this as well but the ac green light would come one and I'd just switch it off

kind of annoying ?

I guess I'll try the work around
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Old 03-19-2009   #32 (permalink)
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Re: Honda defroster reprogramming

I looked at the thread in closer detail and someone said that the canadian civics dont have this set up --so need not worry then ??

I'm canadian eh (new dx-g 09 last week)

finding that car doesnt warm up very fast compared to my 99 civic so I'm wondering if the a/c is on even tho nothing indicates it should be (like the green light)

this is messed up and very , very annoying --especially since many canadians have remote car starters --so what now ? --while car is warming up on a -30 morning I have to go and turn off the effing ac ?

my 99 would go to ac when set to defrost but at least the light would come on and you'd be able to disable it(turn off) before turning car off for the night --then , when using remote starter next morning you'd know car wasnt in ac mode

I'm very annoyed by this

p.s -my canadian civic manual says that it does go to auto ac when in defrost mode but to turn off ac just hit the button twice --once to turn on (even tho its already turned on , I guess its to turn on green light --wtf !) then hit it again to turn off

so either way I'm screwed on those cold mornings when I want to use remote starter as it'll have the ac on already
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Old 03-19-2009   #33 (permalink)
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Re: Honda defroster reprogramming

If the green A/C light is not lit (when in defrost or floor & defrost) then IMO the compressor is not engaged. You should easily be able to tell (underhood fans noise, reduced power, clutch cycling on/off)

It is mentioned that if you move the selector from somewhere to one of those 2 settings the compressor (and the green A/C light) will come back on and you will have to release it again, but if you have it in one of those 2 settings and turn the car off and then re-start it the compressor will stay released.
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Old 03-19-2009   #34 (permalink)
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Re: Honda defroster reprogramming

yes , but craig -others here are saying the green light doesnt illuminate when in defrost mode or defrost/floor mode in their particular model -u.s ? canadian ?

some of the u.s is just as cold as canada so it doesnt make sense that they'd void the canadian models of this stupid method

I'm still new to the 09 and cant tell if the ac is engaged or not --my only symptom is that I'm not impressed with how slowly it takes to warm up the inside of the car compared to my 99 --and its only been -15 , not -35

I'm also finding (different topic) that the engine fan was goin on alot when idling at a stop light or when warmin up the car for 3 mins to head out --it was only around 10 celcius outside

Last edited by butch33; 03-19-2009 at 03:17 PM.
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Old 03-19-2009   #35 (permalink)
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Re: Honda defroster reprogramming

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Originally Posted by butch33 View Post
I'm also finding (different topic) that the engine fan was goin on alot when idling at a stop light or when warmin up the car for 3 mins to head out --it was only around 10 celcius outside
If your fans are running that quick I would say your compressor is engaging. If it gets about +15 F here my temp gauge stays low for quite a while. But I have heat once the needle gets above the lowest mark. My fans would never cycle at that temp without it being used.
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Old 03-19-2009   #36 (permalink)
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Re: Honda defroster reprogramming

thanks for the help craig

I need some canadian 8th gen owner feedback .I'm confused as to whether or not the dxg's sold in canada would have this feature / or not (mainly because of a comment made in this thread)

however , in reading my dxg manual -it states that the a/c comes on when defrost/or defrost /foot setting is chosen and the green indicator light doesnt come on

this doesnt make any sense to me one bit cause I practically use the defrost or defrost/foot setting year round --so technically --my a/c would be on for every waking moment of my new cars life --wtf man
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Old 03-19-2009   #37 (permalink)
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Re: Honda defroster reprogramming

i dont understand most of whats being posted, but let me throw in that having the "a/c" on has nothing to do with how hot the heater gets. if you have the dial turned to hot, it should blow hot air with or without the ac being turned on. now if youre in freezing climates, then yeah the engine will take a long time to warm up. ive been in situations where even after 30 mins of driving, the temp was still below normal until i started to drive in a lower gear to keep the rpms up. so it may be that your car is just not warmed up enough for the coolant to heat the air. as a rule you should always leave the fan on at least one click in cold climate warmups, so the coolant in the heater core gets circulated with everything else. otherwise turning the heat on once the car has warmed up will introduce freezing coolant to a hot engine and possibly cause damage.
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Old 03-20-2009   #38 (permalink)
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Re: Honda defroster reprogramming

I did the trick and the recirculation light flashed / ac light came on --so the 'work around' seems to have worked for my canadian dx-g -09
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Old 08-29-2009   #39 (permalink)
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Re: Honda defroster reprogramming

Worked on my 09 Si sedan!!!

THANKS!!!
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Old 2 Weeks Ago   #40 (permalink)
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Re: Honda defroster reprogramming

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Originally Posted by KRM View Post
You may have noticed that when you turn on the windshield defroster, by default, the a/c will run to provide de-humidified air to the windshield. That is the way Honda has set it up in most of its' recent models. To me, the annoying aspect is that in the defrost modes the a/c control is disabled and there is no way to turn off the a/c. In many situations (particularly warm, rainy conditions) it makes sense to have the a/c go on, but in others, like very cold damp weather, or when driving in heavy or blowing snow, when you are trying to minimize icing on the winshield, it doesn't seem to make sense at all. Also, the manual emphasizes how running the A/C decreases MPG and encourages owners NOT to run it whenever it can be avoided!

Fortunately, there is a solution to this problem that is not documented in the owners manual! As I said, it appears to work with most recent Honda models and I have tried it successfully on my 2006 Civic. Here's how to reprogram the defoster:
- With the key in the "Off" position, set the controls as follows.
- Blower control to "Off"
- Temperature control to coldest
- Mode button to select panel vents only (cannot be selected with the key off, so select this before turning the engine off before starting programming)
- Holding down the recirculate button AND the A/C button, START THE ENGINE. (Continue holding the two buttons) The recirculate button indicator light will flash for about seven seconds. Then the A/C green indicator light will flash on. The defroster is now reprogrammed!

Now the defroster will work as follows.
When selecting Defrost or Defrost + Floor the A/C will still come on, BUT so will the A/C indicator light, and the A/C button is NOT disabled. Now you can push the A/C button and turn the A/C off! It will NOT come on again if you stop the engine and then restart, although you can push the A/C button to turn it on if you wish.

Since in very cold weather I tend to leave the control in the defrost + floor with the A/C off, this works fine for me. Just remember to occasionally run the A/C for a while to keep the seals lubricated. (Just not all winter long!)
Thanks KRM!

I just did my 09 Canadian Si. WORKS GGGGGREAT!
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