您在Mac上打开蓝牙(Bluetooth)时遇到问题吗？各种(Various)原因——例如有问题的蓝牙(Bluetooth)模块或损坏的配置——通常会导致这种情况。完成这些修复以在Mac上启用(Mac)蓝牙(Bluetooth)。
蓝牙(Bluetooth)是任何Mac的基本功能，它允许键盘、触控板、耳机和各种其他外围设备与您的 macOS 设备无线连接。如果您拥有 iPhone 或 iPad
，它还支持 Continuity 功能，例如 Handoff(powers Continuity features such as Handoff)和Universal Control 。
如果蓝牙(Bluetooth)状态图标在Mac 的控制中心或菜单栏(Mac’s Control Center or menu bar)上显示为禁用，并且您无法打开蓝牙(Bluetooth)，则必须尽快修复该问题。继续阅读以了解如何修复Mac的(Mac)蓝牙(Bluetooth)无法打开。
1. 重启你的 Mac
您(Did)是否尝试重新启动Mac？通常只需要重新启动系统即可解决阻止蓝牙(Bluetooth)工作的随机错误和冲突。
要重新启动Mac，请打开Apple菜单并选择重新启动(Restart)。为获得最佳效果，请清除重新登录时重新打开(Reopen)窗口旁边的框，然后选择重新启动(Restart)以确认。
2.重置Mac的蓝牙模块(Bluetooth Module)
如果您仍然无法打开蓝牙(Bluetooth)或看到“蓝牙(Bluetooth)不可用”错误，您应该重置 Mac 的蓝牙(Bluetooth)模块。按照以下步骤操作您的 Mac 上
的 macOS 版本。(your version of macOS)
macOS 蒙特雷和更新版本
1. 打开Launchpad并选择其他 >终端(Terminal)以打开终端(Terminal)。
2键入(Type)以下命令并按 Enter：
须藤 pkill 蓝牙
3.输入(Enter)您的 Mac 的管理员密码，然后再次按Enter以执行命令。
macOS 大苏尔
1. 打开控制中心。
2. 按住 Shift + Option ( Alt ) 键并展开蓝牙(Bluetooth)图标（选择旁边的箭头形符号）。
3. 选择重置(Reset)蓝牙(Bluetooth)模块
。
macOS Catalina 及更早版本
1. 按住 Shift + Option。
2. 选择菜单栏上
的蓝牙图标。(Bluetooth)
2. 指向调试(Debug)并选择重置蓝牙(Reset Bluetooth)模块。
3.删除蓝牙(Bluetooth)偏好
如果重置蓝牙(Bluetooth)模块没有帮助，您必须在 macOS 中删除蓝牙设置文件。(Bluetooth)这迫使操作系统重新创建蓝牙(Bluetooth)配置并修复等式中的损坏问题。
1. 打开Finder并在菜单栏上
选择Go > Go
2.复制粘贴以下路径，回车：
/图书馆/首选项
3.找到(Locate)以下PLIST文件并将其移动到 Mac 的废纸篓中：
com.apple.Bluetooth.plist
4. 重新启动您的 Mac。
5. 再次尝试重新激活Mac上的蓝牙(Bluetooth)。
注意：如果您在启动到桌面区域后遇到任何其他问题或错误，请
从垃圾箱(Trash)中恢复PLIST文件。
4.避免USB干扰
在极少数情况下，有线USB设备会造成干扰并阻止Mac上的(Mac)蓝牙(Bluetooth)模块工作。断(Disconnect)开除键盘和鼠标之外的所有有线外围设备，并检查是否有影响。
如果这有帮助，您必须采取以下措施来避免未来的蓝牙(Bluetooth)连接问题：
- 使用(Use)优质屏蔽USB电缆连接设备。
- 将USB设备从您的Mac移开。
- 关闭所有未使用的
USB设备。(USB)
5. 重置 NVRAM 或 PRAM
如果 Mac 的蓝牙(Bluetooth)问题仍然存在，您可能需要执行 NVRAM（或 PRAM）重置(perform an NVRAM (or PRAM) reset)。NVRAM（非易失性随机存取存储器的缩写）保存系统功能的各种配置，因此重置它可以解决潜在的损坏问题
。
注意：您无法在Apple 硅 Mac上执行(Apple silicon Macs)NVRAM重置。
1. 关闭你的 Mac。
2. 在按住 Option、Command、P 和 R 键的同时将其重新打开。
3. 按住直到您听到两次Mac提示音。(Mac)如果您的Mac使用Apple T2 安全芯片(Apple T2 Security Chip)，请等到您看到Apple标志第二次出现。
6.重置SMC
如果重置NVRAM没有帮助，您必须通过重置SMC（系统管理控制器(System Management Controller)）继续进行故障排除。它是管理Mac(Mac)上各种低级硬件设置的组件。
注意：同样，在Apple(Apple)硅Mac(Macs)上重置SMC是不可能的。
在 iMac 和Mac mini(Mac mini)上重置SMC非常简单。只需(Just)关闭您的设备，断开电源线，并等待至少 15 秒，然后再重新插入。
但是，如果您使用MacBook Pro或Air，则必须依赖特定的组合键和按键，这些组合键会根据设备是否配备Apple T2 安全芯片(Apple T2 Security Chip)而变化。
没有 T2 安全芯片的 MacBook
1. 关闭Mac并断开充电线。
2. 按住Shift、Control和Option键。然后，按住电源(Power)按钮而不释放其他键。
3. 10 秒后松开所有四个键，然后按下电源(Power)按钮打开Mac。
配备 T2 安全芯片的 MacBook
1. 关闭你的 Mac。
2同时按住(Hold)Control、Option和Shift键七秒钟。
3. 再按住电源(Power)按钮七秒钟，不要松开其他键。
4. 释放所有四个键。
5. 按电源(Power)按钮打开您的Mac。
7. 更新 macOS
macOS 更新包含错误修复和更新的硬件驱动程序，可以修复Mac上持续存在的(Mac)蓝牙(Bluetooth)问题。要检查并安装任何挂起的系统软件更新：
1. 打开Apple菜单并选择关于本机(Mac)。
2. 选择软件更新。
3. 选择立即更新。
注意：如果您在安装过程中遇到任何问题，请了解如何修复卡住的 macOS 更新(fix stuck macOS updates)。
8. 恢复出厂设置 macOS
将 macOS 重置为出厂默认设置可以解决导致Mac上出现(Mac)蓝牙(Bluetooth)问题的任何潜在软件相关问题。事先设置 Time Machine(Set up Time Machine)，以便之后可以快速恢复数据(restore your data quickly afterward)。
如果您使用 macOS Monterey或更高版本，重置 macOS 非常容易。
1.在您的Mac上打开(Mac)系统(System) 偏好设置(Preferences)应用程序。
2.在菜单栏上
选择System Preferences > Erase All Content和设置。(Settings)
3. 输入您Mac的管理员密码，然后按照屏幕上的所有说明重置您的Mac。
如果您使用 macOS Big Sur 或更早版本，则只能通过 macOS恢复功能将您的(Recovery)Mac恢复出厂设置。查看恢复出厂设置 macOS 的完整指南以(complete guide to factory resetting macOS)了解更多详细信息。
9. 参观天才吧
如果上述修复均无济于事，请尝试在安全模式下对 Mac 进行故障排除(troubleshooting the Mac in Safe Mode)。如果这也没有做任何事情，您可能正在处理有故障的蓝牙(Bluetooth)模块。在最近的 Apple Store 商店预约，(Book an appointment at the nearest Apple Store)让Apple Genius 天才(Apple Genius)看看您的Mac。
Bluetooth Not Turning on for Mac? 9 Ways to Fix
Do you have trouble turning on Bluetooth on your Mac? Various reasons—such as a buggy Bluetooth module оr corrupt confіguration—oftеn cause that. Wоrk yoυr way through these fixes to enable Bluetooth on Mac.
Bluetooth is an essential feature on any Mac, allowing keyboards, trackpads, headsets, and various other peripherals to connect with your macOS device wirelessly. It also powers Continuity features such as Handoff and Universal Control if you own an iPhone or iPad.
If the Bluetooth status icon appears disabled on your Mac’s Control Center or menu bar and you can’t turn Bluetooth on, you must fix that as soon as possible. Read on to learn how to fix Bluetooth not turning on for Mac.
1. Restart Your Mac
Did you try restarting your Mac? A system restart is usually all it takes to resolve random bugs and conflicts preventing Bluetooth from working.
To restart your Mac, open the Apple menu and select Restart. For best results, clear the box next to Reopen windows when logging back in and select Restart again to confirm.
2. Reset the Mac’s Bluetooth Module
If you still have trouble turning on Bluetooth or see a”Bluetooth not available” error, you should reset your Mac’s Bluetooth module. Follow the steps below for your version of macOS on your Mac.
macOS Monterey and Newer
1. Open the Launchpad and select Other > Terminal to open Terminal.
2 Type the following command and press Enter:
sudo pkill bluetoothd
3. Enter your Mac’s administrator password and press Enter again to execute the command.
macOS Big Sur
1. Open the Control Center.
2. Hold down the Shift + Option (Alt) keys and expand the Bluetooth icon (select the arrow-shaped symbol next to it).
3. Select Reset the Bluetooth module.
macOS Catalina and Earlier
1. Hold down Shift + Option.
2. Select the Bluetooth icon on the menu bar.
2. Point to Debug and select Reset Bluetooth module.
3. Delete the Bluetooth Preferences
If resetting the Bluetooth module didn’t help, you must delete the Bluetooth settings file in macOS. That forces the operating system to recreate a Bluetooth configuration and fixes corruption issues from the equation.
1. Open Finder and select Go > Go to Folder on the menu bar.
2. Copy and paste the following path and press Enter:
/Library/Preferences
3. Locate and move the following PLIST file into the Mac’s Trash:
com.apple.Bluetooth.plist
4. Restart your Mac.
5. Attempt to re-activate Bluetooth on your Mac again.
Note: Restore the PLIST file from the Trash if you encounter any other issues or errors after booting into the desktop area.
4. Avoid USB Interference
Rarely, wired USB devices can cause interference and prevent the Bluetooth module on your Mac from working. Disconnect any wired peripherals except your keyboard and mouse and check if that makes a difference.
If that helps, here’s what you must do to avoid Bluetooth connectivity issues going forward:
- Use quality shielded USB cables to connect the devices.
- Move the USB devices further away from your Mac.
- Power off any USB devices that aren’t in use.
5. Reset NVRAM or PRAM
If your Mac’s Bluetooth problems persist, you might want to perform an NVRAM (or PRAM) reset. The NVRAM (short for non-volatile random access memory) holds various configurations for system functions, so resetting it can resolve potential corruption issues.
Note: You can’t perform an NVRAM reset on Apple silicon Macs.
1. Turn off your Mac.
2. Turn it back on while holding down the Option, Command, P, and R keys.
3. Keep holding until you hear your Mac chime twice. If your Mac uses an Apple T2 Security Chip, wait until you see the Apple logo appear for the second time.
6. Reset the SMC
If resetting the NVRAM didn’t help, you must continue troubleshooting by resetting the SMC (System Management Controller). It’s a component that manages various low-level hardware settings on your Mac.
Note: Again, resetting the SMC is impossible on Apple silicon Macs.
Resetting the SMC is pretty straightforward on the iMac and Mac mini. Just turn off your device, disconnect the power cable, and wait for at least 15 seconds before plugging it back in.
However, if you use a MacBook Pro or Air, you must rely on specific key combos and presses that change depending on whether the device comes with an Apple T2 Security Chip.
MacBook Without T2 Security Chip
1. Turn off your Mac and disconnect the charging cable.
2. Press and hold the Shift, Control, and Option keys. Then, hold down the Power button without releasing the other keys.
3. Release all four keys after 10 seconds and press the Power button to turn on your Mac.
MacBook With T2 Security Chip
1. Turn off your Mac.
2 Hold down the Control, Option, and Shift keys simultaneously for seven seconds.
3. Hold the Power button without releasing the other keys for another seven seconds.
4. Release all four keys.
5. Press the Power button to turn on your Mac.
7. Update macOS
macOS updates feature bug fixes and newer hardware drivers that can fix persistent Bluetooth issues on your Mac. To check for and install any pending system software updates:
1. Open the Apple menu and select About This Mac.
2. Select Software Update.
3. Select Update Now.
Note: If you run into any issues during installation, learn what you must do to fix stuck macOS updates.
8. Factory Reset macOS
Resetting macOS to factory defaults can resolve any underlying software-related problems causing Bluetooth issues on your Mac. Set up Time Machine beforehand so you can restore your data quickly afterward.
If you use macOS Monterey or later, it’s pretty easy to reset macOS.
1. Open the System Preferences app on your Mac.
2. Select System Preferences > Erase All Content and Settings on the menu bar.
3. Enter your Mac’s administrator password and follow all on screen instructions to reset your Mac.
If you use macOS Big Sur or earlier, factory resetting your Mac is only possible via macOS Recovery. Check out the complete guide to factory resetting macOS for more details.
9. Visit a Genius Bar
If none of the fixes above help, try troubleshooting the Mac in Safe Mode. If that fails to do anything as well, you might be dealing with a faulty Bluetooth module. Book an appointment at the nearest Apple Store and have an Apple Genius look at your Mac.
