A quick check of online technical support boards will show you just how prevalent Wii controller problems are. The main problem seems to be with syncing the Wii-mote up with the Wii console. There are a couple of different reasons that you may not be able to sync, and the solution will be different depending on the problem.

Signal Interference

The first possibility when it comes to a syncing problem is interference with your signal. Nintendo Wii controllers operate on Bluetooth technology, which means they use the 2.4 gHz frequency. Unfortunately, this is the frequency most commonly used by wireless devices. Other Bluetooth devices, cordless phones, wireless routers, and even common microwave ovens can interfere with your Nintendo Wii controller’s ability to sync up with the console.

The first thing you should do is to make sure no new devices are nearby, possibly causing the disruption. If you have been using it just fine for some time and nothing new is in your home that is nearby and possibly interrupting the signal that still doesn’t mean that signal interference is out of the question. The problem could be coming from your neighbors, especially if you live in apartments. Perhaps they have added a new device operating on the 2.4 gHz frequency and it is too close to your Nintendo Wii. Obviously, you can’t expect them to go changing things just for your benefit, but you can try moving your Nintendo Wii console to see if that helps.

Manual Syncing Problems

For whatever reason, you may have no signal interference and still find that you are still having issues syncing your Wii-mote. Nintendo will give you the “15 second method” of re-syncing, but 9 out of 10 times, it won’t work. The most likely solution to this problem is achieved by re-syncing all of your Wii-motes using the following five easy steps:

  1. Open the SD card compartment on your Wii console.
  2. Open the battery compartment of your Wii-mote.
  3. Press the red sync button on the Wii console.
  4. Press the sync buttons on your Wii-mote.
  5. Repeat for each Wii-mote as needed.

That’s it. This method will fix your non-signal related syncing issues 99% of the time. If this doesn’t do it, then the problem is most likely with the Wii-mote or the Bluetooth sensor in the Wii console itself. If you are having the problem with multiple Wii-motes, then unfortunately you are most likely going to have send your Wii off to Nintendo to get the Bluetooth sensor repaired. Good luck.