How do I fix MacBook Air M2 overheating in sleep mode?

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Level 1

62 points

How do I fix MacBook Air M2 overheating in sleep mode?

Hello, I own a Macbook Air M2. It often gets warm during sleep mode, much more than when I use it. Sometimes, it is almost hot. Then it cools down when I open it and use it. It's up to date. It stresses me because: first it's sad to see there is a malfunction, secondly I worry about fire when I leave home. I heard about those Apple cellphones who took fires, one time in a plane. Update after update, I expect the problem to be fixed. But it is not. I see there are many people reporting the issue with Mac Mini M4, Macbook Pro, and so on. I would be happy if Apple replies that it is normal, some system task in the background, no worries. But they don't. But I know it is not normal because it too hot, too often and too long. Maybe they could fix it, or maybe they could give a list of apps that creates the issue.

I slows me in my work of course.

I also worry that it will damage the computer because heat is not good. So i try to think about unplugging every time but sometimes i forget. Sometimes, i even go back home just to unplug it.

It is not realy a question, it is more a call.

Thanks

[Re-Titled by Moderator]

Original Title: Macbook very warm during sleep mode

MacBook Air, macOS 15.5

Posted on Aug 24, 2025 1:14 AM

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Answer 1

Aug 24, 2025 11:09 AM in response to younmac

Run the third party app EtreCheck and post the complete report here so we can examine it for possible clues.

How to use the Add Text Feature When Posting an EtreCheck Report - Apple Community

You can also use the following Terminal command to view the Sleep & Wake incidents which includes battery level, time & duration, and reason for the sleep/wake.

pmset  -g  log  |  grep  -iE  'Sleep  |Wake  '   |   grep  -iE  '^2025-08-23|^2025-08-24'

This command will only show events on 2025-08-23 and 2025-08-24 so you can capture events overnight. You can modify the dates accordingly. However, the rest of the command must be entered exactly or it will give unexpected results. The most critical item for filtering results is the two spaces after for the "Sleep | Wake " section. It is best to copy & paste the command and use the arrow keys & delete key to edit the date portion.

Unfortunately the reason for the sleep & wake events may be a bit cryptic.

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Answer 2

Allan Jones

Level 10

81,886 points

Aug 25, 2025 10:19 AM in response to younmac

If you have subscription apps, they may be "phoning home" during idle hours. Try closing all apps and open web pages, and then sleeping it. Does the heating repeat?

I see there are many people reporting the issue with Mac Mini M4, Macbook Pro, and so on.

My new M4 Pro Macbook Pro 14" is the coolest running notebook computer I have even owned or used.

Like an automobile engine, computers get hotter the more work they must do. Doing work makes heat. Your body gets hot when you exercise, right?

A few known causes of higher computer workloads and thus, temps:

Chrome
some web pages
gaming
video conferencing
streaming video
useless anti-virus and so-called "cleaning" apps
keyboard covers
using the computer in your lap, on a blanket, or on a pillow.

All those are user-correctible

I heard about those Apple cellphones who took fires,

Really? 🛑 BE careful what you believe on the Great Prevaricator, the internet. Those were Samsung phones, and essentially only one model— the Galaxy Note 7. 2016. Not iPhones. There are lots of Apple haters out there but little gospel truth.

Batteries in old Mac laptops (pre-2006 models) had overheating issues, but the same make of batteries had high heat issues in Windows laptops as well. Apple dealt with that long before the first Intel Macs came out. Every laptop maker gets batteries from a vendor, and it was a vendor issue.

If you have a informed comment for Apple, these forums are not the place. This is:

Feedback - MacBook Air - Apple

They will not see your issue in these forums. Make sure what you send is not based on internet rumor and fear-mongering.

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Answer 3

Fyrdyn

Level 1

8 points

Aug 28, 2025 5:16 PM in response to WheelieNick

Yeah that is bad news. Keep it in a fire-safe place before you take it to the service shop. Like a concrete porch or maybe a bathtub.

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Answer 4

younmac Author

Level 1

62 points

Sep 6, 2025 1:18 AM in response to younmac

maybe i will try to shutdown more often. it seems to behave better. the scm (power managment) is resetted at every shutdown on apple silicon ship.

not convenient because i have to reopen all my apps

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Answer 5

younmac Author

Level 1

62 points

Aug 29, 2025 11:33 PM in response to younmac

there it is on AC

2025-08-27 20:04:08 +0900 DarkWake DarkWake from Deep Idle [CDNP] : due to NUB.SPMI0.SW3 nub-spmi0.0x02 rtc/Maintenance Using BATT (Charge:96%) 11 secs

2025-08-27 20:04:19 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using Batt (Charge:96%) 1137 secs

2025-08-27 20:23:16 +0900 Wake Wake from Deep Idle [CDNVA] : due to smc.70070000 lid SMC.OutboxNotEmpty/UserActivity Assertion Using BATT (Charge:96%)

2025-08-27 20:43:29 +0900 Sleep Entering Sleep state due to 'Clamshell Sleep':TCPKeepAlive=active Using AC (Charge:94%) 134 secs

2025-08-27 20:45:43 +0900 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:94%) 45 secs

2025-08-27 20:46:28 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:94%) 255 secs

2025-08-27 20:50:43 +0900 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:94%) 45 secs

2025-08-27 20:51:28 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:95%) 255 secs

2025-08-27 20:55:43 +0900 DarkWake DarkWake from Deep Idle [CDNP] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:95%) 45 secs

2025-08-27 20:56:28 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:97%) 153 secs

2025-08-27 20:59:01 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:97%) 45 secs

2025-08-27 20:59:46 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:98%) 57 secs

2025-08-27 21:00:43 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:98%) 45 secs

2025-08-27 21:01:28 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:98%) 113 secs

2025-08-27 21:03:21 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:98%) 45 secs

2025-08-27 21:04:06 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:98%) 35 secs

2025-08-27 21:04:41 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:98%) 44 secs

2025-08-27 21:05:25 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:98%) 18 secs

2025-08-27 21:05:43 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:98%) 45 secs

2025-08-27 21:06:28 +0900 Sleep Entering Sleep state due to 'Maintenance Sleep':TCPKeepAlive=active Using AC (Charge:100%) 193 secs

2025-08-27 21:09:41 +0900 DarkWake DarkWake from Deep Idle [CDNPB] : due to smc.70070000 wifibt SMC.OutboxNotEmpty bluetooth-pcie/ Using AC (Charge:100%) 46 secs

2025-08-

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Answer 6

WheelieNick

Level 8

46,529 points

Aug 24, 2025 2:29 AM in response to younmac

This Is not good. Is this only when it remains on the charger? Dont let it remain on the charger when it is charged

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Answer 7

younmac Author

Level 1

62 points

Aug 29, 2025 10:58 PM in response to Allan Jones

A few known causes of higher computer workloads and thus, temps:

Chrome
some web pages
gaming
video conferencing
streaming video
useless anti-virus and so-called "cleaning" apps
keyboard covers
using the computer in your lap, on a blanket, or on a pillow.

All those are user-correctible

Do you think these apps make the computer hot when it is on sleep mode and plug to the charger?

But not on sleep mode unpluged?

I think you mean when the computer is running, right?

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Answer 8

younmac Author

Level 1

62 points

Aug 29, 2025 11:11 PM in response to HWTech

hello,

there is the result from terminal. I forgot to mention that it happens only when the computer is plugged to the charger.

Last login: Mon Aug 4 12:02:08 on console

younleru@Youns-MacBook-Air ~ % pmset -g log | grep -iE 'Sleep |Wake ' | grep -iE '^2025-08-23|^2025-08-24'

2025-08-23 15:19:23 +0900 Wake Wake from Deep Idle [CDNVA] : due to smc.70070000 lid SMC.OutboxNotEmpty/HID Activity Using BATT (Charge:100%) 899 secs

2025-08-23 15:34:22 +0900 Sleep Entering Sleep state due to 'Clamshell Sleep':TCPKeepAlive=active Using Batt (Charge:100%) 1060 secs

2025-08-23 15:52:02 +0900 DarkWake DarkWake from Deep Idle [CDNP] : due to NUB.SPMI0.SW3 nub-spmi0.0x02 rtc/SleepService Using BATT (Charge:100%) 2 secs

terminal report

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Answer 9

younmac Author

Level 1

62 points

Aug 28, 2025 4:32 PM in response to WheelieNick

Hello,

yes, it is.

but sometimes, I forget

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How do I fix MacBook Air M2 overheating in sleep mode?

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