Brake Master Cylinder problems of the 2007 Chrysler Pacifica

From the time the car was new when the abs or traction control was engaged the car made a clicking noise. As never having a car with this feature I thought was normal. In March of 2010 my brakes failed on my 07 Pacifica. Upon taking the car to the dealer I was informed that there was contaminated fluid in the brake system and the entire system had to be replaced. New calipers, abs module, lines, hoses master cylinder ect. The bill was $2500 which I had to pay because they are claiming contaminated fluid. I had been the only person to service the brakes on that car and did not add fluid when replacing the front pads. When the failure occurred the car would come to a stop and start rolling again. I avoided crashing by standing on the pedal as hard as I could. After replacing the entire brake system the clicking has stopped. I have driven Chrysler/ Dodge cars for 12 years. . . This one may be my last.