GT Auto Air Temp

[Paulieb81]

Sorry if this is the wrong section, It didn't really fit into any main topic but my question is for those in hot climate areas.

Do you feel like setting the auto temp you have to set it about 6 - 8 degrees lower than you would normally in your home or any other car?

The reason I ask is that I have had several different cars with auto temp, and I have always had them set around 74 - 76, same with my home, 74 - 75. However in the CX-5, I have to set it around 67 - 69 just for it to be moderately cool. It also does not ever kick on high when you first turn on the car to get cool quickly like most other cars with auto air I have seen.

 

[tjka4231]

It's been hot in the upper 90s the past few days in parts of So. Cal. I have a similar situation with my CX 5. I set its auto temp to 70 or lower. On my other cars, I set the auto temp to 73 or 74 and it keeps us comfortable. When starting the CX 5 after sitting outside in a parking lot on a hot day, the CX 5 doesn't give a high amount of air to cool down quicker as what my other cars do. On a hot day, I had to manually turn up the fan speed and lower the temp to get the same cooling effect as with my other cars; basically taking it out of the auto setting.

 

[Buddyb]

Weird. My '15 GT blasts the air on auto setting when the car is started. I normally turn it off auto so I don't get blasted with warm air before it's cooled down. I keep mine set at 72.

Also I live in SoCal where it's been high 90'd and 100 a few days now lately

 

[tjka4231]

I will have it checked out at the dealer. This has been the situation since I got it two months ago.

 

[Kedis82ZE8]

You may want to get your system checked at dealer. Insufficient cooling in AC system according to FSM states the following:

If the engine coolant temperature increases due to a cooling system malfunction, the fail-safe function disables the A/C operation.
Drive belt malfunction
Refrigerant pressure sensor malfunction
Cooling fan system malfunction
Condenser or related part malfunction
A/C unit or condenser malfunction
Receiver/drier or expansion valve malfunction (valve closes too much)
Malfunction in refrigerant lines
A/C compressor system malfunction, insufficient compressor oil
Over filling of compressor oil, malfunction in expansion valve or A/C unit air mix link system
Evaporative temperature sensor malfunction

 

[tjka4231]

Thanks for the information. I'll let the dealer know, although they should know what to check.

 

[shingles]

Yes, compared to other cars, the indicated temp is lower. Really what I've learned is, these are not meant to be accurate gauges of actual interior temp. EVERY car is different... from my old M5, to my CTS-V, to the wife's Accord, to our QX56. NONE of them match up. Some I have to set "higher" to be comfortable, other's lower.

 

[Paulieb81]

Weird. My '15 GT blasts the air on auto setting when the car is started. I normally turn it off auto so I don't get blasted with warm air before it's cooled down. I keep mine set at 72.

Also I live in SoCal where it's been high 90'd and 100 a few days now lately

OK so I'm not crazy, or at least not crazy for this reason. Yes any other car I have had or have been in with auto temp A/C has the same functionality. It turns on full blast or ramps up to full blast after about 30 seconds once the compressor has started. Any gets the car to a nice cool temp and then auto adjusts the fan speed to maintain a stable temperature. This car only kicks on to maybe half speed on the fan, even when its mid to upper 90's here in south florida and the A/C, i've had to set at mid 60's just to get it to do that. If I leave it at 74 or 75, it ramps up to almost half way and takes forever to cool down.

I even had 18% windows tinted on all sides to combat the heat, which helps a lot by the way. If your windows aren't tinted and you live in a hot area, I highly suggest.

 

[Kedis82ZE8]

On my Infiniti there is a way to adjust the display so it more accurately shows the real temp. I didn't see anything in the Mazda FSM so probably can't be done.

This may be just a theory but possibly a fuel saving method? Maybe cycling the AC compressor and lower output cooling is less strain on motor than full on engaged compressor? Again just thinking out loud...