How to Easily Reset SMC on macOS: Solve Common Mac Problems

macos reset smc

The System Management Controller (SMC) plays a pivotal role in the functionality of macOS devices, overseeing crucial aspects such as thermal management, battery performance, and power management. Occasionally, Mac users may encounter issues that can be resolved by performing a macOS reset SMC, a process that restores the default settings of the SMC and can significantly improve the device’s performance.

This article dives into the nuances of the SMC, outlining when and how to reset it across various Mac models, including those equipped with Intel processors and the T2 chip. Additionally, we address frequently asked questions to clarify common concerns related to this procedure.

Understanding SMC in macOS

The System Management Controller (SMC) is an integral component of macOS devices, responsible for managing low-level functions that are crucial for the system’s overall health and efficiency. Its roles include:

  • Thermal Management: Regulating fan speeds to ensure optimal operating temperatures.
  • Power Management: Handling power consumption for efficient battery usage and sleep modes.
  • System Performance: Overseeing the performance of various system components to maintain stability.

Resetting the SMC can resolve a range of issues, such as:

  • Unresponsive hardware components.
  • Erratic battery and charging behavior.
  • Abnormal system performance or overheating.

Understanding the function and scope of the SMC is essential for diagnosing problems that may benefit from a reset.

When to Reset Your Mac’s SMC

Identifying the right moment to reset your Mac’s SMC is crucial for maintaining its performance and longevity. Here are symptoms that may indicate the need for a reset:

  • Persistent System Issues: If your Mac exhibits ongoing problems with sleep mode, battery charging, or fan activity despite troubleshooting efforts.
  • Hardware Anomalies: Unexplained behavior from keyboards, lights, or other components.

Differentiating between issues that require an SMC reset and those that do not is vital. For instance, software-related problems or issues with macOS itself may not benefit from an SMC reset and could require different solutions. Recognizing the signs and understanding the underlying causes of your Mac’s issues will guide you in applying the most effective solution, including when to perform a macOS reset SMC.

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Preparing to Reset the SMC

Before proceeding with the macOS reset SMC process, it’s crucial to prepare your device to ensure a smooth and safe procedure. Here are the steps to follow:

  • Backup Considerations: Always back up your data to avoid any loss during the process. Use Time Machine or your preferred backup method to secure your files.
  • Identifying Your Mac Model and Chip Type: Determine whether your Mac has an Intel processor or a T2 security chip. This information can be found in the “About This Mac” section under the Apple menu. Knowing your Mac’s specifics is essential for following the correct reset procedure.

Step-by-Step Guide to Resetting the SMC

For Macs with Intel Processors

Resetting the SMC on Macs with Intel processors varies slightly depending on the model and battery type.

MacBooks with Removable Batteries:

  1. Shut down your Mac.
  2. Remove the battery.
  3. Press and hold the power button for 5 seconds.
  4. Reinstall the battery and turn on your Mac.

MacBooks with Non-Removable Batteries:

  1. Shut down your Mac.
  2. Press Shift + Control + Option on the left side of the built-in keyboard, then press the power button at the same time. Hold these keys for 10 seconds.
  3. Release all keys, then press the power button to turn on your Mac.

Procedure for Desktop Macs:

  1. Shut down your Mac.
  2. Unplug the power cord.
  3. Wait 15 seconds, then plug the power cord back in.
  4. Wait 5 seconds, then press the power button to turn on your Mac.

For Macs with the T2 Security Chip

Macs equipped with the T2 chip follow a different procedure for SMC reset.

  • Recognizing T2 Equipped Models: If your Mac is a late 2018 model or newer, it likely has the T2 chip. This includes most MacBook Pro, MacBook Air, Mac mini, and iMac models from this period.
  • Specific Steps for T2 Chip Models:
  1. Shut down your Mac.
  2. Press and hold the power button for 10 seconds.
  3. Release the power button, then wait a few seconds.
  4. Press the power button again to turn on your Mac.
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If the issue persists after the initial attempt, proceed with these additional steps:

  1. Shut down your Mac and unplug all external devices except the power cord.
  2. Press Control + Option + Shift for 7 seconds. While holding these keys, press and hold the power button for another 7 seconds.
  3. Release all keys, wait a few seconds, then press the power button to turn on your Mac.

Following these detailed instructions based on your Mac’s specifications will help ensure a successful SMC reset.

After Resetting the SMC

What to Expect: Immediately after a macOS reset SMC, your Mac might exhibit temporary changes in behavior such as altered fan speeds or lighting adjustments. These should normalize as the system recalibrates its settings based on the default SMC configuration.

Troubleshooting Post-Reset Issues: If problems persist or new issues arise, verify the reset process was completed correctly. If necessary, repeat the procedure ensuring all steps are followed accurately. Consult Apple Support for persistent or complex issues.

Preventing Future SMC Problems

To minimize the need for future SMC resets, adhere to these best practices:

  • Regular Updates: Keep your macOS and all applications up to date to ensure compatibility and stability.
  • Proper Shutdowns: Always shut down your Mac properly to avoid corrupting the SMC settings.
  • Environmental Considerations: Use your Mac in a well-ventilated area to prevent overheating, which can stress the SMC.


How do I know if my Mac has a T2 security chip?

Check the “About This Mac” section under the Apple menu. Models with the T2 chip include most Macs introduced in 2018 or later.

Will resetting the SMC erase my data?

No, resetting the SMC does not affect the data stored on your Mac. It only resets the system management settings.

Can resetting the SMC fix battery charging issues?

Yes, resetting the SMC can resolve certain battery and charging issues by restoring default power management settings.

What should I do if resetting the SMC doesn’t solve the problem?

If issues persist, consider running Apple Diagnostics to identify hardware problems or consult with Apple Support for further assistance.

Is it safe to reset the SMC on an older Mac?

Yes, it is safe to reset the SMC on older Macs. Ensure you follow the correct procedure for your specific model.


The System Management Controller is crucial for the seamless operation of macOS devices, managing essential functions that affect performance and power management. By following the steps outlined in this article for a macOS reset SMC, users can resolve many common issues. However, it’s important to approach this process with care and seek professional advice for complex problems. Regular maintenance and updates can help prevent future SMC-related issues, ensuring your Mac continues to run efficiently.

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