Sonicare Turns On By Itself. May 11, 2013 · castiglione del lago, italy ·. You will hear 3 beeps and see the battery light flashing green.

Your toothbrush may come with different modes and settings. The mode button will not turn the toothbrush on so be sure that you are pressing the correct button. Press and hold the power button (#4, fig.1) together with the intensity up (+) button (#6, fig.1) and the mode button (#8, fig.1) for at least 2 seconds.