A faulty USB cable will most likely make your PS4 controller not to connect to the PS4 in safe mode. This is because a faulty USB cable will not be able to transfer data. With that said, the PS4 will fail to communicate with controller because there is no data connection between the two. You can fix this by replacing the USB cable with a

Finally, re-sync the controller to the PS4 using the PS button. Conduct a power cycling on your PS4: Turn off your PS4 console and controller, and unplug the PS4's power cord from the outlet. Wait 5 to 10 minutes, and with the PS4 still unplugged, hold down the power button for 30 seconds to drain all its leftover energy.

A quick and easy way to turn on a PS4 is to press a button on the console itself. To use this method, press the physical Power button on your PS4. The button will feature a power icon. Your console's power indicator light will blink blue and then white, indicating that your machine has turned on. And that's it. Select “Devices”: Within the Settings menu, locate and select the “Devices” option. This will allow you to manage device settings on your PS4. Choose “Bluetooth Devices”: In the Devices menu, scroll down and choose the “Bluetooth Devices” option. This is where you can enable Bluetooth and pair external devices.
To connect a PS4 controller to a PS5 using a wired connection, follow these steps instead: Connect the PS4 controller to the PS5 using a micro-USB cable. Press the PS button. Wait for the PS4
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how to connect ps4 controller to ps4 without cord