"AC-On/Off" Voice Command

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Feb 28, 2023 | 09:54 AM

medku

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From: ca

"AC-On/Off" Voice Command

When using "AC-On/Off" voice command on my Lexus ES 300h 2022, the system turns on/off fan instead, regardless of AC position. It even replies "AC is already on" when AC is off and the fan is working. Wondering if this a bug on all Lexuses or is it just my vehicle?

Mar 1, 2023 | 04:47 PM

BBQapple

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From: TX

Best I can figure, my 23 decides on its own when to engage the AC compressor and I don’t have any control over it.

Mar 1, 2023 | 04:53 PM

medku

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From: ca

Quote:

Originally Posted by BBQapple

Best I can figure, my 23 decides on its own when to engage the AC compressor and I don’t have any control over it.

This happens when climate control is set to auto. And I am using manual setting.

Mar 1, 2023 | 05:00 PM

mikemu30

Lexus Test Driver

Joined: Jul 2017

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From: NJ

Quote:

Originally Posted by BBQapple

Best I can figure, my 23 decides on its own when to engage the AC compressor and I don’t have any control over it.

It's on all the time on AUTO even in winter from what I've seen in four years of driving this car.

Mar 1, 2023 | 06:59 PM

BBQapple

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From: TX

Quote:

Originally Posted by medku

This happens when climate control is set to auto. And I am using manual setting.

I don’t run mine in auto mode. I set the fan to the speed I want and select which vents I want to run. How do I manually turn the AC compressor on and off? Because best I can figure, it decides on its own.

Mar 2, 2023 | 04:59 AM

mikemu30

Lexus Test Driver

Joined: Jul 2017

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From: NJ

Quote:

Originally Posted by BBQapple

You can turn it off by going into the climate settings on the right side screen. Uncheck the AC button.

Mar 2, 2023 | 10:38 AM

BBQapple

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From: TX

Quote:

Originally Posted by mikemu30

You can turn it off by going into the climate settings on the right side screen. Uncheck the AC button.

Maybe I’m dense but I thought this setting just allows AC to operate when system is in auto mode. I don’t see a way to manually turn AC on and off?

Mar 2, 2023 | 01:45 PM

mikemu30

Lexus Test Driver

Joined: Jul 2017

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From: NJ

Here's my side climate screen - from here uncheck green AC button.

Mar 2, 2023 | 10:28 PM

#10

medku

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From: ca

What about voice command "Turn AC off"? What does it do on your vehicles?

Mar 3, 2023 | 05:17 AM

#11

mikemu30

Lexus Test Driver

Joined: Jul 2017

Posts: 9,625

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From: NJ

Quote:

Originally Posted by medku

What about voice command "Turn AC off"? What does it do on your vehicles?

Never tried any of the voice commands.

Mar 4, 2023 | 01:08 PM

#12

grp52

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Joined: Mar 2020

Posts: 1,756

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From: CA

Quote:

Originally Posted by BBQapple

Maybe I’m dense but I thought this setting just allows AC to operate when system is in auto mode. I don’t see a way to manually turn AC on and off?

You have a 2023 ES with the completely new for 2023 "Lexus Interface" multimedia system. Prior model years have/had the "Lexus Multimedia System". While there's some similarities in controls between the two systems there's also a whole lot of differences especially in the user interface presentation and operation.

Mar 4, 2025 | 12:35 PM

#13

zul8tr

Intermediate

Joined: Jan 2025

Posts: 423

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From: Florida

FYI on my 21ES350 Premium when I manually press the fan button and manually adjust speed with no AC Auto pressed the compressor engages. When the AC Auto pressed and by voice command told to shut off AC the fans still run but by visual the compressor is still on.

At present I have not gone into the AC screen noted in other post and try the AC off and see what happens. Wouldn't that be the same result as voice telling to shut AC off?

Really a very complicated system that makes it so difficult to do this simple request of outside air with windows up and sunroof closed. This is really nice when outside air is cool enough with low humidity.

Last edited by zul8tr; Mar 4, 2025 at 12:42 PM. Reason: correct spelling

Mar 24, 2025 | 06:46 AM

#14

mcomer

Lead Lap

Joined: Nov 2013

Posts: 4,321

Likes: 1,233

From: IL

A/C stands for "Air Conditioning" not Air Chilling or Air Cooling. The system wants to be able to
engage the compressor to dehumidify the cabin to aid with defogging the windows. Easy to defeat
by tapping the green A/C icon shown in post #9 when driving with the windows and sunroof open.
Note: even if Auto is still illuminated, when you tap it again it will reengage the A/C compressor and green light.

Selecting either Drive Mode "ECO" or opening the HVAC panel and selecting "ECO" will reduce the power
requirements of the compressor and fans. Really helps MPG on hot days but might affect the cooling results
when making short trips with all seats filled with folks drinking hot beverages. We use ECO for 1 or 2 aboard
and switch to Normal with all seats filled.