Today while was playing Halo 3 on my 360, my controller stopped vibrating...

[Ashton S]

...completely. what happened and what d? I tried going to preferences and vibration from the xbox menu guide and it was selected. All of my controllers will not vibrate suddenly

 

[U R Sofa King]

usually when the battey level gets low it turns off the vibration to conserve power, charge them up or change batteries.