I am the one who brought this topic up before. This happens frequently on MY2012. If I use the fob, the AC blows from the vents, if I use OnStar, a good 85% of the time it comes out of the defrost. It does not matter how I manually set the controls, the system over rides it, and the moment I hit the power button the air changes to the vents.I think this topic came up before, probably with the Gen 1.
Have you tried setting your HVAC system by manually selecting the dash vents before turning off the car? I think the car is supposed to follow your settings during remote start.
I tested it this week, I get the same results with my '13I am the one who brought this topic up before. This happens frequently on MY2012. If I use the fob, the AC blows from the vents, if I use OnStar, a good 85% of the time it comes out of the defrost. It does not matter how I manually set the controls, the system over rides it, and the moment I hit the power button the air changes to the vents.
I can do 2 full cycles, getting in the car at the last of the 2nd cycle and it is still blowing out of the defrost. I don’t have this issue at all when I use the fob. My solution was to park my car closer to my desk so I can use the fob in the summer.Strangeness at work here I think. I don't precondition too often, but when I have, and open the door to get into my '13 its always blowing out of the dash vents as normal. Usually it's allowed to run a few minutes so maybe it's starting at the defrost vents, but it's definitely blowing through the dash as I always check how cool it's blowing from the outer drivers side vent before getting into the car. I never use the onstar app but instead the fob, but perhaps this afternoon I may give the app a try and see if the result is different.
Tried this too, no luck for me. I finally gave up.I set the HVAC direction control to the dash at lunch today, and I'll try it for a few days and see what happens.
Based on the experiences above, I'm not terribly optimistic.
Keith
I had a couple good days where the A/C was blowing correctly, but yesterday it was coming out of the defrost vents. So, as expected, setting the flow manually didn't fix the problem.I set the HVAC direction control to the dash at lunch today, and I'll try it for a few days and see what happens.
Based on the experiences above, I'm not terribly optimistic.
Keith
This failed too. I set the temp control to Low and mode to Max during a recent round of hot weather, and on the very first day came out to air blowing (at a relatively low speed to boot) from the defrost vents. I didn't even have the sun shade up.Perhaps during the next round of hot days I'll try setting the temperature control lower as suggested above.
Yep, unfortunately it is what it is. Thankfully I can park my car close enough to my desk that I can use the key fob to precondition.Oh well.
Keith
There might be something to what you stated, if you have Auto Defogger set to Yes then the Volt may choose to use the windshield defroster vents during preconditioning regardless if the AC Temperature is set to Low (or less than 63 F). My experience is that when the Defroster Vents are blowing cold air moisture will condense on the outside of the cooled windshield and require use of the wipers to clear the windshield fogging on the outside of the windshield near the defroster vent area.Hmmm.... I'm not entirely sure where I'm going with this thought, but I do know that when air temperature drops, the relative humidity goes up without actually changing the amount of water in a volume of air, until it eventually condenses and rains. The only mention so far is in post 1, which was a "couldn't tell if it made any difference". Maybe there IS a switchpoint that's based on humidity more or less alone that says "it's humid enough in here we're going to need some precautionary window clearing".
Unfortunately I can rule out the auto defrost option. Toggling the setting has made no difference in my testing.There might be something to what you stated, if you have Auto Defogger set to Yes then the Volt may choose to use the windshield defroster vents during preconditioning regardless if the AC Temperature is set to Low (or less than 63 F). My experience is that when the Defroster Vents are blowing cold air moisture will condense on the outside of the cooled windshield and require use of the wipers to clear the windshield fogging on the outside of the windshield near the defroster vent area.
