MacBook Bluetooth Not Working? Every Fix in Order

Eight fixes from fastest to slowest, how to tell a software glitch from a Bluetooth chip that has actually failed — and what a Mac is worth if Bluetooth is genuinely dead.

Bluetooth that won't connect or keeps dropping is almost always software — or the accessory, not the Mac. The most common causes are a stalled radio that just needs toggling, a low accessory battery, a stale pairing, or a hung background helper after sleep. Genuine Bluetooth-chip failure is real but rare, and it's the last thing to suspect, not the first. Work down the list in order — most devices are back by step 4.

First: what exactly is it doing?

One device won't connect, but others do → it's that accessory. Power-cycle it, check its battery, and forget-and-re-pair it (fixes 2 and 4).
A device connects then keeps dropping → low battery or interference. Charge it, move away from the router, unplug USB-3 drives (fixes 2 and 7).
NOTHING will connect / Bluetooth is grayed out or "Not Available" → a wedged stack. Restart, reset the module, then delete the plist (fixes 3, 5, 6).
Broke after a macOS update or after waking from sleep → a hung bluetoothd helper. Restart, and if it recurs, reset the module (fixes 3 and 5).

The 8 fixes, fastest first

Fix	Time	What it fixes	How
1. Toggle Bluetooth off and back on	30 sec	A stalled Bluetooth radio that just needs a kick	Click the Bluetooth icon in the menu bar (or System Settings → Bluetooth) and switch it Off, wait five seconds, then On. If there's no Bluetooth icon in the menu bar, turn it on under System Settings → Control Center so you can reach it fast next time. This is the single most common fix — the radio occasionally hangs and a simple toggle wakes it back up. Try reconnecting your mouse, keyboard, or AirPods right after.
2. Power-cycle the accessory itself	1 min	A dead battery or a confused device, not the Mac	Half of “Bluetooth not working” calls are the accessory, not the laptop. Turn the mouse, keyboard, or headphones fully off and on. Check the battery — a Magic Mouse or AirPods at 1% will connect, then drop. For AirPods, put them in the case, close the lid for 15 seconds, then reopen. Confirm the device is actually in pairing mode (most blink when ready). If it works on a phone but not the Mac, the problem is the Mac (keep going); if it's dead everywhere, it's the accessory.
3. Restart the Mac	2 min	A hung Bluetooth daemon (bluetoothd) holding the radio	Apple menu → Restart. Bluetooth is run by a background helper called bluetoothd that can wedge — especially after waking from sleep or swapping between many devices. A restart relaunches it clean. If Bluetooth works right after a reboot but dies again after sleep, that's the classic wake-from-sleep bug; fixes 4 and 5 target it directly.
4. Remove the device and pair it fresh	3 min	A corrupted pairing record that won't reconnect	System Settings → Bluetooth, click the (i) or X next to the troublesome device and choose Forget This Device. Then put the accessory in pairing mode and add it again from scratch. Stored pairing data goes stale — particularly for AirPods that have been paired to a phone, iPad, and Mac at once. A clean re-pair fixes devices that show as connected but send no input or audio.
5. Reset the Bluetooth module	3 min	A scrambled Bluetooth stack across all devices	On macOS Monterey and earlier: hold Shift+Option and click the menu-bar Bluetooth icon → Reset the Bluetooth module, then restart. On Ventura and newer Apple removed that menu, so the equivalent is to Forget every device, restart, and re-pair — or run, in Terminal: sudo pkill bluetoothd (it relaunches automatically with a fresh state). Do this when NOTHING will connect, not just one device.
6. Delete the Bluetooth preference file	4 min	A corrupt system Bluetooth config that survives restarts	In Finder press Cmd+Shift+G and go to /Library/Preferences/. Drag com.apple.Bluetooth.plist to the Trash (you'll need your admin password), then restart — macOS rebuilds a clean one automatically. This clears a corrupted Bluetooth configuration that a normal restart can't, and is the standard fix when Bluetooth is grayed out, says “Not Available,” or refuses to turn on at all.
7. Clear interference and check USB devices	2 min	Wi-Fi/USB-3 interference masquerading as a Bluetooth fault	Bluetooth and 2.4GHz Wi-Fi share a band, and USB-3 drives and unshielded hubs throw noise right on top of it. Move the Mac away from the router, unplug USB-3 devices and cheap hubs one at a time, and keep the accessory within a few feet with line-of-sight. If a flaky mouse becomes rock-solid the moment you unplug a USB-3 SSD, you found it — interference, not a broken radio.
8. Boot in Safe Mode and run Apple Diagnostics	10 min	A software conflict, or confirming the Bluetooth chip has failed	Boot into Safe Mode (Apple Silicon: hold power → Options; Intel: hold Shift at startup). If Bluetooth works there, a login item or kext is the culprit — remove recently added drivers. Then run Apple Diagnostics (Apple Silicon: hold power → Options → Cmd+D; Intel: boot holding D). If Bluetooth is still dead in Safe Mode and after a plist delete and module reset — and it's missing entirely from System Information → Bluetooth — the chip itself has failed. See the honest section.

The two that solve the most cases: toggling the radio (fix 1) and a clean re-pair (fix 4) — between them they clear nearly every "my mouse won't connect" and "AirPods keep dropping" complaint. When nothing connects and Bluetooth is grayed out, jump to deleting the preference file (fix 6), com.apple.Bluetooth.plist, which clears a corrupt config a restart can't. If a device works fine on your phone but not the Mac, the Mac is the issue — keep going down the list.

The honest part: when the Bluetooth chip has actually failed

If Bluetooth is missing entirely from System Information → Bluetooth, or stays grayed out and "Not Available" after a restart, a module reset, a plist delete, and a Safe Mode test, you're in the small minority where the hardware itself has failed. On every modern MacBook the Bluetooth radio is fused into the Wi-Fi/Bluetooth module that's soldered to the logic board — there's no socketed card to swap like on older machines. Fixing a truly dead Bluetooth chip means a logic-board-level repair.

That's a few hundred dollars at Apple, and often more on out-of-warranty Intel models. On a newer Apple Silicon Mac still under AppleCare it's worth doing. On a 2015–2019 Intel MacBook, a board-level repair frequently costs more than half the machine is worth — at which point you're spending real money to keep an old Mac that's also slower at everything else. A $10 USB Bluetooth dongle is the honest stopgap if the Mac is otherwise fine and you just need a mouse and keyboard. If you're weighing repair against replacement, our guide on how long MacBooks last shows where each model year stands.

And if Bluetooth is one of several aging-out problems, a refurbished M1 Air — the cheapest modern Mac we sell — has rock-solid Bluetooth 5.0, is several times faster than any Intel MacBook, and gets every macOS update. See how the generations compare in our M1 vs M2 vs M3 guide.

The repair-vs-trade math

The decision rule is one line: if fixing Bluetooth means a board-level repair on a Mac that's already slow and out of warranty, the repair money is better spent toward a newer machine. Broken Bluetooth is a minor fault — the rest of the Mac still holds real value, so it trades well.

Bluetooth is the only problem: trades close to full working value. Check your model's value.
Bluetooth plus a cracked or damaged screen: still worth money — selling a Mac with a cracked screen.
Bluetooth plus other faults (keyboard, won't boot): we buy those too, priced on parts — broken MacBooks of any kind.

Photos and the model number get you a same-day number. That credit typically covers a meaningful chunk of a refurbished Apple Silicon Mac — with working Bluetooth and a fresh 1-year warranty.

Honest take: nine times out of ten Bluetooth that won't connect is a stalled radio, a flat accessory battery, or a stale pairing — toggle Bluetooth off and on, charge and re-pair the device, and if nothing connects, delete com.apple.Bluetooth.plist and restart, and you're back in a couple of minutes. But if Bluetooth is gone from System Information after all that, it's a board-level repair — and on an old Intel Mac that bill is rarely worth paying. Trade it toward a modern Mac while it still holds value.