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Mazda CX-9 Heating Ventilation Air Conditioning

34 messages,  Last post on Dec 02, 2009 at 1:31 PM

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What is this discussion about? Mazda CX-9, Heating / Cooling, SUV


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#12 of 34
Rear Air Controls by debbiejay
Jul 14, 2009 (8:54 am)
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Is anyone having an issue with the rear air controller in the 07 touring? If the rear air controller is off, then the rear air is uncontrollable. It blows out at full speed and the front fan control speed does not change the rear fan speed at all. If I adjust the temperature control knob, the rear air fan speed goes higher and lower accordingly. Is this right? Should I have to keep the rear air switch engaged full time to keep the rear air off all the time? Shouldn't the option be, rear air switch off=front controls work all of the air, rear air switch on=rear controls work rear air and front do not. Does this make sense?
#13 of 34
Front Fans Blow After Turn Off by debbiejay
Jul 14, 2009 (9:15 am)
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I have another issue with the a/c in my 07 touring. Intermittently, the front fan will turn on full blast after the car is turned off. Sometimes keys are out of ignition and in my hand when this happens. I don't have the keyless start option. My dealer says that since this is intermittent they can't fix it until they see it happen. I have seen other posts about this, but would like to know if anyone has had this repaired and what exactly was done to repair it? Thanks!
#14 of 34
Re: Front Fans Blow After Turn Off [debbiejay] by ceric
Jul 14, 2009 (2:10 pm)
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Replying to: debbiejay (Jul 14, 2009 9:15 am)

debbiejay,
Something is not right with your A/C.
Have your dealer look at it before warranty expires (soon I presumed).
You could have a faulty switch in the A/C system.
#15 of 34
Re: Rear Air Controls [debbiejay] by redbull22
Jul 19, 2009 (9:58 am)
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Replying to: debbiejay (Jul 14, 2009 8:54 am)

I have the same problem... Same year and model. Well, actually I can't control it at all, the speed is full blast and the temp will not change either. Did you ever solve your problem and if so what was it?
#16 of 34
Re: Rear Air Controls [redbull22] by debbiejay
Jul 19, 2009 (10:47 am)
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Replying to: redbull22 (Jul 19, 2009 9:58 am)

Initially mine was like yours, full blast only. The dealer changed a relay and now the front temp knob is the only control for rear air when rear air switch is off. After checking again with my dealer and poring through the owners manual, I learned that the rear air is now working as designed. Mazda really missed the boat on this one. The front temp knob is the only available control for the rear air when the rear air control is Off. I find this annoying and illogical. But I have learned to leave the rear air switch on at all times.
#17 of 34
Re: Rear Air Controls [debbiejay] by redbull22
Jul 19, 2009 (11:40 am)
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Replying to: debbiejay (Jul 19, 2009 10:47 am)

Yes, but does it now work when rear control is "on"? Sadly I am 1000miles over warranty.
#18 of 34
Re: Rear Air Controls [redbull22] by debbiejay
Jul 21, 2009 (2:51 pm)
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Replying to: redbull22 (Jul 19, 2009 11:40 am)

I'm not sure I understand what you are asking. When the rear control is on, the only way to control the rear air is from the knobs in the back seat. The rear controls have always functioned correctly for me.
#19 of 34
Re: Front Fans Blow After Turn Off [debbiejay] by stonpony
Aug 24, 2009 (9:24 am)
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Replying to: debbiejay (Jul 14, 2009 9:15 am)

I have the same issue in my 07 sport. It has only happened twice in 18 mos. I have not mentioned it to the dealer yet but I will next visit. The last time it happened (last week) it took several attempts of turning car on & off to get it to shut off.
#20 of 34
Re: Front Fans Blow After Turn Off [stonpony] by vg33e power
Aug 31, 2009 (1:13 pm)
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Replying to: stonpony (Aug 24, 2009 9:24 am)

So does anyone have a definate answer and or parts replaced to the mystical "rear air coming on full blast after turning off vehicle myth" I just picked up a used 2007 CX-9 and the day I brought it home (Friday) I turned it off and the rear air blasted on itself, I came back to leave on the car about 15 minutes later and it was off....
 
So does anyone have a definate answer? Any Mazda techs out there that have encountered or fixed this issue?
 
I am out of warranty so if it just a switch or a relay a part number and location is all I need to purchase it and install it myself. Thanks!
#21 of 34
Re: Front Fans Blow After Turn Off [vg33e power] by stonpony
Sep 08, 2009 (9:08 am)
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Replying to: vg33e power (Aug 31, 2009 1:13 pm)

Check out the "new member thread" he is a Mazda tech. I asked him, see his reply below
 
If you're referring to the blower motor (fan for air coming out of the dash vents--front blower, or fan for air coming out of the vents on back of center console--rear blower), TSB 07-008/09 addresses that issue. If you haven't driven 36,000 miles yet, take your vehicle into your nearest dealer and mention the TSB number listed above.
  
However if you're referring to a radiator/condenser fan under the hood, that may run to cool the motor when you turn the car off.

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