Step 1: Turn on the Wii console and wait until the Health & Safety screen appears (don't press the A Button).

Step 2: Open the small flap on the front of the Wii console and locate a red button labeled "SYNC."
This button is located on the left side of the Wii mini.

Step 3: Press and hold the SYNC Button down for 15 seconds. This will clear all the syncs on the Wii.

Step 4: Sync the Wii Remote(s) to the console.
Each Wii Remote being used with the console will need to be synced.