Turn on the Wii console.
Open the Wii Remote sync menu:
From the Wii Menu, press the SYNC button on the front of the Wii console.
Or go to Wii System Settings, then Controllers, then Sync.
Press the SYNC button on the Wii Remote:
Remove the battery cover if needed.
Press the SYNC button inside the battery compartment (or on the back panel for some models).
Wait for the LED lights on the Wii Remote to stop flashing and stay lit.
Assign the controller to the desired player slot if prompted.
Test the Wii Remote in the Wii Remote test screen or by navigating the Wii Menu.