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Old 12-30-2010, 01:07 AM   #1
blindgoldfish z
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Default 2011 WRX HVAC issue...?

On my way home this evening with the outside temperature 35 degrees F, my heat seemed to always be on regardless of where I set the thermostat at. Nothing was on auto. The only time I could get cool air (not even cold) was when I clicked it to that last "cold" notch past the 65 degree mark.

I'll call my dealer tomorrow, but if anyone has any ideas that I can steer them toward, it might end up saving me some time. Thanks.
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Old 12-30-2010, 02:14 AM   #2
XanRules
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Automatic or Manual CC?
Not too familiar with the 08+ models, but I'll try to help as best I can.
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Old 12-30-2010, 03:00 AM   #3
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Quote:
Originally Posted by blindgoldfish z View Post
On my way home this evening with the outside temperature 35 degrees F, my heat seemed to always be on regardless of where I set the thermostat at. Nothing was on auto. The only time I could get cool air (not even cold) was when I clicked it to that last "cold" notch past the 65 degree mark.

I'll call my dealer tomorrow, but if anyone has any ideas that I can steer them toward, it might end up saving me some time. Thanks.
I got same thing on my 2011 sti.
I miss my 07 wrx manual climate control.
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Old 12-30-2010, 06:17 AM   #4
flipnidaho
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Did you try clicking it past Auto (clockwise) and cranking the temperature to desired setting (below 65)? I thought I had a similar issue since I keep forgetting that I had automatic climate control (my first car with auto climate control).
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Old 12-30-2010, 08:30 AM   #5
blindgoldfish z
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It has auto modes, so I'm not sure if that qualifies as auto CC or not.

I turned the blower and vent settings past auto and tried adjusting the temp and it still only want from warm air to hot air, except when I was on that notch below 65, then it was just cool air.
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Old 12-30-2010, 09:29 AM   #6
blindgoldfish z
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I talked to the dealer today and he said this was "normal" and is just a quirk of the electronic HVAC controls in the new models (I miss my 08 2.5i controls...).

I'm not sure if the controls use a potentiometer, but whatever it is could use some adjustment.
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Old 12-30-2010, 09:33 AM   #7
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turn off the recirc
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Old 12-30-2010, 10:12 AM   #8
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turn off the recirc
I never have recirc on.
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Old 12-30-2010, 10:24 AM   #9
jonklein611
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turn on AC.

Even if you don't have the car in auto, it's still trying to get the air to 65 degrees. Air which was at 30ish degrees, so that requires heat.

In my 2011 I've found that if I leave everything in auto, then set the temp to where I want it, the car will pump heat for a bit, then switch to AC and keep things nice and comfy.


or turn the temp below 65
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Old 12-30-2010, 10:28 AM   #10
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Put fan to AUTO, Mode to AUTO, and set the Temp to between 65 and 75. Then let the car warm up, once it feels nice, maybe slightly warm, turn it closer to 70. Just leave it there.

The system works very well and will keep the temperature wherever you want it. I only find that once I get on the highway, it gets colder (more cold air flowing in) and I turn it up a little.

Also, take your jacket off.

It is 35 outside, you have it set to 65. It has to keep blowing till it hits 65 and then keep it there. How do you expect to get cool air at 65?
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Old 12-30-2010, 10:50 AM   #11
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I was interpreting the dial in an old-skool manner I suppose where instead of an actual temperature reading, it was more of a ratio of hot to cold.

Is the AC run off electrics or is it belt driven...
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Old 12-30-2010, 10:53 AM   #12
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Quote:
Originally Posted by blindgoldfish z View Post
I was interpreting the dial in an old-skool manner I suppose where instead of an actual temperature reading, it was more of a ratio of hot to cold.

Is the AC run off electrics or is it belt driven...
the compressor is belt driven. I've found leaving everything in full auto, and then setting the temp I want is the best way to do it.

I just have to get the gf on the same mentality. If you want more airflow, change the temp higher or lower, if you want less find the temp it's currently at.
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Old 12-30-2010, 01:36 PM   #13
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Originally Posted by jonklein611 View Post
I just have to get the gf on the same mentality. If you want more airflow, change the temp higher or lower, if you want less find the temp it's currently at.
My GF is always cold, and doesn't want the air blowing on her. WTF?

1) I have a blanket for her if she wants it.
2) She LOVES the heated seats.
3) I have her modulate the vent on her side (you can turn it up/down, left/right, and you can control how open it is, she closes it most of the time).

She really wants me to get a Legacy for the dual zone.
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Old 12-30-2010, 02:35 PM   #14
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Quote:
Originally Posted by Snow Drift View Post
My GF is always cold, and doesn't want the air blowing on her. WTF?

1) I have a blanket for her if she wants it.
2) She LOVES the heated seats.
3) I have her modulate the vent on her side (you can turn it up/down, left/right, and you can control how open it is, she closes it most of the time).

She really wants me to get a Legacy for the dual zone.
That was my gf's push for the legacy as well.

Heated seat is on if she's in the car. Same for number #1 for her.

I finally got her to just change the temp until she's happy. If she's not in the car I start @ 70 and drop it to 65 by the time I'm near home.
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Old 12-30-2010, 07:56 PM   #15
2Fast4U1DAY
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Quote:
Originally Posted by blindgoldfish z
I was interpreting the dial in an old-skool manner I suppose where instead of an actual temperature reading, it was more of a ratio of hot to cold.

Is the AC run off electrics or is it belt driven...
It is belt driven as stated above but there are several inputs and feedbacks to help control the temperature.... Ambient temperature sensor, a photo vetolic (sp) switch to measure the sunlight coming through the windshield etc... They all input to the computer so it can calculate and determine the best settings to achieve the selected temperature.... Also remember when you change TWO or more settings it goes into a manual mode.... Its sort of like saying f u man figure it out yourself...
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Old 12-31-2010, 03:32 AM   #16
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The one thing I don't like about the auto settings is when the AC turns on in the dead of winter. It seems a bit unnessesary.
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Old 12-31-2010, 07:05 AM   #17
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Quote:
Originally Posted by Pingers
The one thing I don't like about the auto settings is when the AC turns on in the dead of winter. It seems a bit unnessesary.
Even tho it seems unneccessary.... Have you ever tried to defrost a frosted over windshield with hot or warmer than slightly warm air? It gets all fogged up right? Well thats because you are blowing straight hot air on the windshield/windows... Therefore the ac IS neccessary to blend incoming cold or cool air with the with the conditioned air to make warm air to help with the defrosting of the windshield and prevent fogging.... Oh and before everyone says im insane... I just received my MACS (Mobile Air Conditioning Society) certification in the mail yesterday...
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Old 12-31-2010, 08:42 AM   #18
Snow Drift
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Originally Posted by 2Fast4U1DAY View Post
Even tho it seems unneccessary.... Have you ever tried to defrost a frosted over windshield with hot or warmer than slightly warm air? It gets all fogged up right? Well thats because you are blowing straight hot air on the windshield/windows... Therefore the ac IS neccessary to blend incoming cold or cool air with the with the conditioned air to make warm air to help with the defrosting of the windshield and prevent fogging.... Oh and before everyone says im insane... I just received my MACS (Mobile Air Conditioning Society) certification in the mail yesterday...
I'm 99% sure that as soon as you turn the Mode to Windshield Defog/Defrost the AC turns on, even w/o the AC light showing. It always blows cold air unless you turn it up above 75.
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Old 12-31-2010, 01:14 PM   #19
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Quote:
Originally Posted by Snow Drift

I'm 99% sure that as soon as you turn the Mode to Windshield Defog/Defrost the AC turns on, even w/o the AC light showing. It always blows cold air unless you turn it up above 75.
No the a/c light comes on unless its malfunctioning (the light)or you turn it off (the ac) In this case if you did that you just changed two settings and the automatic climate control would go into a manual mode and now YOU must find the happy medium... As for turning up the temperture... The system takes an average of ambient temperature plus the selected in car temperature.... So lets say yesterday was 35 farenheit and you had selected 75... 75+35=110. 110/2= 55 would be about the temperature of the air flowing to the windshield thats not exactly cold and not hot either... So change that number to 65 as the selected temp. 65+35= 100... 100/2= 50... Turning it up to 75 would give you a 5 degree difference in temperature... Hardly noticable to the touch... And yet you think 50 is cold... Thats like spring temps here....
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Old 01-01-2011, 12:36 PM   #20
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I've been getting acquainted with a 2011 wrx for the last couple weeks. Initially, I thought we had a wacked out cabin sensor because '65' always seemed too hot. I was using the system in manual mode for fans and vents, ac off.

What seems to work in Winter: set fan and vent controls to auto, temp to 65. Initially, the AC light will be off. As the car warms the cabin will become too warm, the AC light will go on, the cabin will stabilize at a warm-ish 65 and I find that after at least ten minutes I can punch the ac button off and all is good. I do wish the thermostat would turn down to about 60. Especially on short trips, I always wear a jacket in the car and '65' is just too warm.

The full counter clockwise position on the t-stat is heat off, and happily it really *is* heat off. Manual control subies always seem to be blowing some hot air in somewhere (driver foot well) and that got really annoying.
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