2008 Toyota Highlander stability control problems

We have a 2008 toyota highlander with intermittent failure of the anti-lock brakes and vehicle stability control system (abs/vsc). For no apparent reason, the abs/vsc will malfunction and brakes operate incorrectly. It is an intermittent problem that comes an goes. We have almost had an accident in the snow in ohio. We have had the car into the dealer 4x without resolution since nobody knows what is wrong. It has been an ongoing issue since it started jan 2010.

At toyota, we are dedicated to providing vehicles of outstanding quality and value. As part of our continual efforts to ensure customer satisfaction, toyota would like to advise you of a voluntary customer support program that has been initiated for your vehicle. Toyota has received reports regarding certain internal malfunctions of the brake actuator assembly in certain 2008-2010 model year highlander hybrid vehicles.