AC always come on at startup?

[Glen Baker LLC]

We live in the Mojave Desert. The only time we would ever see that kind of humity percentage would be in a rain storm during the monsoon season. Typically we are less than 10% humidity.

I'm in the Mojave Desert too.
I tend to agree with you it's tough to get humidity here.
Therefore to test the humidity Theory. I'm going to run a small humidifier in my truck to boost the humidity and see if it automatically activates the AC.

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[Tbone289]

I'm in the Mojave Desert too.
I tend to agree with you it's tough to get humidity here.
Therefore to test the humidity Theory. I'm going to run a small humidifier in my truck to boost the humidity and see if it automatically activates the AC.

I live where it's humid most of the year. My HVAC has never turned on on it's own after I've turned it off. However, if it is already on, it will automatically start the A/C compressor if it's humid enough inside the cabin.

 

[Glen Baker LLC]

I live where it's humid most of the year. My HVAC has never turned on on it's own after I've turned it off. However, if it is already on, it will automatically start the A/C compressor if it's humid enough inside the cabin.

Exactly correct, 100%
I don't expect my results to be any different than yours.
On our older models 22-24 that have buttons and knobs. I don't know if folks realize that the temperature selection button is actually the on and off button too.

 

[mwelby]

Mike, @MikeS1942 You're turning this button off prior to turning your truck off. Is that correct?

And it's turning back on when you start your truck?

Yes, although the button is different on the 25 XLT

 

[mwelby]

Exactly correct, 100%
I don't expect my results to be any different than yours.
On our older models 22-24 that have buttons and knobs. I don't know if folks realize that the temperature selection button is actually the on and off button too.

Well, I’ll have to try that one too. I seem to have tried everything else.

 

[Glen Baker LLC]

Yes, although the button is different on the 25 XLT

@mwelby
Please try this
To completely turn off the climate control completely in a 2025 -26 Ford Maverick, press the physical fan down button on the center dashboard until the fan speed reaches zero. Alternatively, simply press the Power button if your specific trim features one directly on the center console's climate controls.
See if the above keeps the climate control system Off.

If you turn off your climate control. It should remain off after you start your truck whether it's negative 10° or 110°, 5% humidity or 95% humidity.
Now we can address the air conditioning portion of your climate control.
If any portion of your climate control is on there is always a temperature set. Be it LO - HI or any temperature in between. The climate control will try and maintain that temperature. It will automatically turn your AC on. Same with humidity if there's a lot of humidity in the cab it will automatically turn the AC on.

 

[Bluecrew]

Every time before shutting down my engine, I always power the AC off. However, every time I start the engine, the AC is automatically on. I don’t understand why this is happening. I would assume that the AC State should be the same at startup as it was when the engine was shut down. anyone else noticing this?

If I turn off the whole system with the AC on, it will come back on when I start the car, but if I press the actual AC button first and then turn off the system, it won't automatically turn on when starting the car.

 

[mwelby]

@mwelby
Please try this
To completely turn off the climate control completely in a 2025 -26 Ford Maverick, press the physical fan down button on the center dashboard until the fan speed reaches zero. Alternatively, simply press the Power button if your specific trim features one directly on the center console's climate controls.
See if the above keeps the climate control system Off.

If you turn off your climate control. It should remain off after you start your truck whether it's negative 10° or 110°, 5% humidity or 95% humidity.
Now we can address the air conditioning portion of your climate control.
If any portion of your climate control is on there is always a temperature set. Be it LO - HI or any temperature in between. The climate control will try and maintain that temperature. It will automatically turn your AC on. Same with humidity if there's a lot of humidity in the cab it will automatically turn the AC on.

OK, I tried turning the fan all the way off and stopped the engine. However, when I started the engine, the AC was on again so that didn’t work. I’ll have to look and see if there’s anyway you can actually turn the temperature off. I’m thinking you can only turn it up and down.

 

[Glen Baker LLC]

OK, I tried turning the fan all the way off and stopped the engine. However, when I started the engine, the AC was on again so that didn’t work. I’ll have to look and see if there’s anyway you can actually turn the temperature off. I’m thinking you can only turn it up and down.

Sorry, without having availability to a 2025-26 that's all I could think of.
I will keep trying.

 

[Truckish]

Every time before shutting down my engine, I always power the AC off. However, every time I start the engine, the AC is automatically on. I don’t understand why this is happening. I would assume that the AC State should be the same at startup as it was when the engine was shut down. anyone else noticing this?

I have the same issue on my 2025 and the dealer service also said it was designed this way.

There is not much to do but just contact Ford and tell them you don't like this and if they get enough complaints, they might make it like most other cars where it remembers that you left it off and keep the setting.

It is aggravating as the AC kicks off in the morning during the warm up phase wasting gas, and unlike the earlier cars that have manual AC controls and knobs, only have a tiny hard to see light on the screen to tell you it is on.

My recommendation is simply contact Ford and express that you don't appreciate. I already did. I hope you would too. When asked what I would like, I said to just have the AC remember the if I left it on or off. This would solve it for everyone. Those that like to have the AC on all the time, which appears to be the majority on here and those of us that like to turn it on when needed.

You will hear all sorts of BS about humidity levels etc. Just ignore that stuff....if your windows are open in a cool morning, the humidity is not an issue yet it comes on. The other Ford trucks like the Ranger and F150 do that in automatic setting but seem to remember the setting when not in Automatic.

You can contact Ford at 1-800-392-3673 or you can chat with someone on this page: https://www.ford.com/help/contact/ I used the chat method.

I hope you do. The Maverick is a amazing car, I hope we can make it more amazing for ALL.

PS. I also asked that they add an option to remember the last headlight setting...IE if left in Auto, stay in auto; and if left off, remember off.

Best of luck!

 

[mwelby]

Sorry, without having availability to a 2025-26 that's all I could think of.
I will keep trying.

Well, I tried moving the temperature up to 80 and there was at least a five second delay before the AC light came on, so then I moved the temperature slider all the way to high shut it off and restarted and the AC light seem to stay off, so I’ll try that for my next few cycles and see if it’s consistent.

Sorry, without having availability to a 2025-26 that's all I could think of.
I will keep trying.

OK, so I tried moving the heat up to 80° and the AC light took a good five seconds to come on after restarting. Then I set the temperature all the way up to high on the slider and when I shut off and restarted the AC light seem to stay off, which is promising. I’ll try this for the next few Stop/start cycles and see if it’s consistent. You may be onto something!

 

[Tbone289]

If any portion of your climate control is on there is always a temperature set. Be it LO - HI or any temperature in between. The climate control will try and maintain that temperature. It will automatically turn your AC on. Same with humidity if there's a lot of humidity in the cab it will automatically turn the AC on.

Well...sort of.

Case in point:

If I turn on the system by selecting the dash vents and set the temperature to 10 degrees lower than ambient, the system does not turn on the AC compressor to lower to the set temperature. So, in that case, the climate control will not try to maintain that temperature--it is just venting air. In that case, it will only turn on the AC compressor to reduce humidity.

 

[HeyBales]

I think it depends on the temperature in your cabin. If it's higher than what you have it set for, it will automatically come on to get the cabin to that temperature, which is what I would want it to do.

No, it didn't used to.
If you have Auto mode on sure.

That's that's exactly how mine works.
I wonder if some folks don't realize that they can turn off the entire system by pushing the big temperature control knob

Wrong MY.
25MY actually turns the HVAC system back on - no button anyway.
Pre-25MY if HVAC is off it's off.

 

[Glen Baker LLC]

Wrong MY.
25MY actually turns the HVAC system back on - no button anyway.
Pre-25MY if HVAC is off it's off.

What "button" or indicator are you using to turn your climate control totally off?

 

[HeyBales]

@mwelby
Please try this
To completely turn off the climate control completely in a 2025 -26 Ford Maverick, press the physical fan down button on the center dashboard until the fan speed reaches zero. Alternatively, simply press the Power button if your specific trim features one directly on the center console's climate controls.
See if the above keeps the climate control system Off.

If you turn off your climate control. It should remain off after you start your truck whether it's negative 10° or 110°, 5% humidity or 95% humidity.
Now we can address the air conditioning portion of your climate control.
If any portion of your climate control is on there is always a temperature set. Be it LO - HI or any temperature in between. The climate control will try and maintain that temperature. It will automatically turn your AC on. Same with humidity if there's a lot of humidity in the cab it will automatically turn the AC on.

That bold part is not true for my 24MY XLT.

I can turn my set point anywhere and AC button will NOT light up on it's own.
No Auto being used.

If humidity is high AC will run in background as you can feel it - but the AC button will NOT light up on it's own.

My prior post on my effects was specific about the thread question - when the HVAC is turned On (on pre-25MY if the HVAC is being turned on by system - that's a problem), the AC was usually in the state last left.
If it was off - normally off.

But I've seen glitchiness on that - vent that was last selected is not, and AC is selected when it was last not, on prior truck turn-off.

Other threads have pointed out the 25MY seems to turn the HVAC on by itself, and have AC enabled.

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