Front Seat Head Restraint problems of the 2006 Toyota Scion Xb

I own a 2006 Scion Xb release series 3. 0 envy green and the head rest monitors that came from factory has failed. The first time the monitors failed to work was back on July 20 and ever since the monitors will not work or it will turn on for a few seconds and shuts off and will not turn on again. I have tried to turn it on every time I have the kids in the back but unfortunately cannot make it work. I am also a member of a numerous scion website forums and spoke to some of the rs3. 0 owners and found out that they also had the same problems, and I was surprise to find out that one of the members had the same issue on the same exact date I had mine and we were at the same scion event. I was told by that member that he had taken his to a scion dealership and he was informed by that service dept that scion/Toyota knew there was a problem with the unit module for the monitors and the dealership replaced the part for free of charge. My problem is that of all 3 scion dealerships I have contacted none would admit of such issue including the dealership where I purchased mine. Please help resolve this issue and for other rs3. 0 owners out there that are not aware of the problem soon to happen.