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Honda Accord Climate Control Questions

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  • I4 automatic, LX, base options.

    There are several options for the air: MAC AC, Body, Body&Feet, Feet, Feet&
    Windshield, Windshield.

    The manual says when in Feet&Windshield or Windshield, the AC is
    automatically on, even thought the AC light is off, for anti-foggy purpose.

    The manual also says that when it switches from Feet&Windshield or
    Windshield to Feet, the AC is still on. This sounds very strange/stupid.

    The manual doesn't say for the Body, and Body&Feet. That means only Feet
    button has this stupid issue? In other words, when switching from
    Windshield or Windshield/Feet to Body or Body/Feet, the AC will
    automatically change to Off?

    Any idea/suggestion?

    thanks.
  • thegraduatethegraduate Posts: 9,731
    Any idea/suggestion?

    Not to sound impolite, but I'm not quite sure what you're asking.
  • Any time you have it on Windshield (defrost) or defrost/heat, the A/C turns on to aid in defrosting the windshield. When you change the setting where you don't have defrost or defrost/heat, the A/C won't be on. That's normal and fairly standard for any car.

    Mrbill
  • elroy5elroy5 Posts: 3,741
    I live in South Louisiana, and with the high humidity, the defrost just doesn't work without the A/C on. Two guys I know had Nissan trucks, and the A/C would not come on automatically, in defrost mode. They were baking themselves, because they had to have the heat way up to clear the windshield. They finally figured out the A/C being on, made all the difference.
  • thegraduatethegraduate Posts: 9,731
    For the record there is a "hack" for the allowing the driver to have control over the A/C when in defrost or defrost/feet in 2003-2007 Accords equipped with manual A/C controls. If you like, I'll try and find the post and link it for you.
  • Thanks, but I'm OK with the A/C coming on with the defroster. I have the Navi system, with auto air, so even if there was a hack, I'd rather not mess with it.

    Mrbill
  • thegraduatethegraduate Posts: 9,731
    Wouldn't help you then, it only works for the manual controls. :)

    With the hack, A/C comes on automatically when you press defrost/feet or defrost. It allows you to turn it off if you want to though, much how the 1998-2002 Manual A/C works. I like it coming on automatically, but I also like the option to be able to turn it off.
  • dont want to hack. Just want to figure out what is going on. thanks.
  • elroy5elroy5 Posts: 3,741
    Just want to figure out what is going on.

    What is going on is, defrost/defog works much better with A/C on, so it is turned on automatically. I will usually only use the defrost/windshield mode until the windshield is clear, then switch back to dash/cooling or floor/heat.
  • I4 automatic, LX, base options.

    There are several options for the air: MAC AC, Body, Body&Feet, Feet, Feet&
    Windshield, Windshield.

    The manual says when in Feet&Windshield or Windshield, the AC is
    automatically on, even thought the AC light is off, for anti-foggy purpose.
    (I understand this part, and it makes sense).

    The manual also says that when it switches from Feet&Windshield or
    Windshield to Feet, the AC is still on. This sounds very strange/stupid.
    (this doesn't make sense. So I would like to make sure my understanding is correct).

    The manual doesn't say for the Body, and Body&Feet. So when switching from
    Windshield or Windshield/Feet to Body or Body/Feet, will the AC automatically change to Off or not?
    (I would like to hear from experts here)
  • What is going on is, defrost/defog works much better with A/C on, so it is turned on automatically. I will usually only use the defrost/windshield mode until the windshield is clear, then switch back to dash/cooling or floor/heat.

    Here is the issue: when you switch back, the AC may still be on, even the indicator is not off. This is the issue I try to figure out!
  • elroy5elroy5 Posts: 3,741
    I would think if the A/C was on, before switching to defrost(windshield), it will go back to that setting. If it was off, I assume it would go back to that setting.
  • mikesidmikesid Posts: 22
    My A/C was blowing hot air yesterday morning and took it to the dealer this morning. Looks like road debris hit the compressor and they have to replace. Because it was road debris its not covered under warranty. I understand that because its something Honda can't control. However I just want to make sure and check to see if there is anything i can do to get it covered under warranty or if anyone knows of any faults or recalls that could help. Its a pretty expensive repair and could use the money. I just want to make sure that the dealer isnt trying to pull a fast one.
  • parvizparviz Posts: 484
    Do you recall such an impact? It would have been something noticeable that would make the hit to the compressor.
  • mikesidmikesid Posts: 22
    I did about 60 miles of hiway driving. i tried to avoid, but did run over a plastic bag. i also drove on a dirt road but was not going that fast, very dusty and limited visibility. and im sure i hit a pothole with the right front tire on the hiway (not unusual for our hiways). when i drove home i didnt hit anything. i remember a musty odor when i dropped my grandpa off at his house. i turned the car off and spent a few minutes at his house. when i turned the car back on i noticed a hi pitch when the A/c was on. i turned it off and thought i noticed smoke (because when i stopped at the lights i could see it through my lights), but that could have been because of the dirt road. the next morning is when it blew hot air. it just seems weird to me.
  • mrbill1957mrbill1957 Posts: 818
    Are you sure it's the compressor that's bad? Did you mean to say Condenser?

    The condensers in the front have been targets of road debris. The thin wall aluminum tubing doesn't take much of an impact to make a small hole.

    I added 3/8" hardware cloth just behind the opening in the bumper in my 04 Accord. With it painted black, you would never know it's there unless you really looked closely. So far it has done it's job.

    Mrbill
  • blufz1blufz1 Posts: 2,045
    Check with your auto insurance. The pothole you struck may be a hazard that is covered by insurance. Hope this helps.
  • elroy5elroy5 Posts: 3,741
    My A/C was blowing hot air yesterday morning and took it to the dealer this morning. Looks like road debris hit the compressor

    Are you sure it was the compressor? Or the Condenser? The condenser is in front of the radiator, and can easily be damaged by a rock flying up from the road. The compressor would be harder for a rock (debris) to hit. If it was the condenser, and you travel down dirt/rocky roads, you may consider putting a (heavy duty) screen behind the bumper opening, to protect the condenser.
  • mikesidmikesid Posts: 22
    Yes, it was the condenser (not very mechanically inclined, lol). When i brought it in this morning the service manager was telling me that he had a feeling that it was going to be the condenser because on most cars they are on the front. I thought it was pretty dumb to put such a fragile piece on the front where all the debris is at. but he told me that pretty much the only place to put it. even though i was going slow it must have been the dirt road i was on or the other car that passed me could have pushed some debris in the path.

    I think i will invest in a heavy duty screen. expensive lesson to learn.
  • elroy5elroy5 Posts: 3,741
    It's just so easy for a rock to fly from a truck or car in front of you, and bounce right into the condenser through the large opening in the front bumper. There are screens sold to cover the opening from the back side of the bumper, but many of these aftermarket screens are only designed for looks. This is not the first time I've heard of this happening. I look at my condenser through the bumper opening often, and wonder if I should invest in the screen myself.
  • I'd much like the hack even though I don't believe for one minute that the compressor actually comes on. How could it be if indicator light is off (i.e., manual A/C)?

    If this is indeed what is happening, I'd love to see that hack. I absolutely hate the idea that the manufacturer would feel obliged to do this. After all, warm air + defrost can usually defrost a window very nicely without A/C. Otherwise, how would cars have been able to function for decades without it?

    MAK
  • elroy5elroy5 Posts: 3,741
    I don't know where you live, but here in South Louisiana, on a hot humid night, you don't want to use a lot of heat to defog your windshield. Living here, if you don't have the compressor to dry the air, you would have to use enough heat to bake chickens, and it takes about 5 times longer. A/C operation may not be necessary in Arizona, but in Louisiana it certainly is. When I was young we had cars without A/C, so we had to keep a towel handy to wipe the condensation off the windshield. Ahhh, the good ole days. :(
  • thegraduatethegraduate Posts: 9,731
    I don't believe for one minute that the compressor actually comes on. How could it be if indicator light is off (i.e., manual A/C)?

    Well, believe it my friend. Sit idling, with your fan on, vents set on face, A/C off. Then press defrost. You'll hear the A/C kick on. If you press the A/C button, it doesn't turn off. You can hear and feel this. The hack works.

    And, along with elroy, I live in the South (Birmingham, AL) and second the comments about the heat!
  • That might explain why the engine revs lackluster from a start with defrost on! And I thought it was the sludge they use for oil for the first 7k miles. I've not been happy with the responsiveness of the 4cyl/AT so far (500 miles). My last car was a stick, but I needed to trade to accommodate my wife's inability to drive it.

    Let me know if anyone finds the right wire to snip to keep that compressor off. I simply don't need it here in Chicago most days.
  • thegraduatethegraduate Posts: 9,731
    There is a hack to make it user-selectable for defrost. If I had more time I'd try and locate it for you, but at the moment, I don't. Try searching "Hack" in the 2003-2007 Accord maintenance forum.
  • parvizparviz Posts: 484
    I think it has changed for the 08 models. I remember seeing it in one of the manuals that came with my Accord that said if you don't want the AC on when using the other functions push on the AC on/off button till you see AC off and it should turn it off. But of course, you would have to do it every time (I guess?).
  • thegraduatethegraduate Posts: 9,731
    The hack doesn't work on ANY models with auto climate control.
  • I have an 08 Accord Coupe. Which uses more gas? putting in on auto which uses a combination of AC, heat and fresh air? Or using the fan and temp at 79 or so. Even setting it at 79 it comes through cool and like it is using the AC. Which would be more fuel efficient to use? This is a EX-L V6.
  • Its pretty simple; to be more efficient, turn A/C off manually.
  • parvizparviz Posts: 484
    Unless you live in a cool area, the cold air coming through is with the AC on. The AC is on whether it reads AC On, AUTO, or even no read out at all. The only time the AC is off on the 08 (at least the EXL model) is when it reads "AC Off".
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