Brake Abs Warning Light problems of the 2009 Toyota Camry Hybrid

Brake, abs and warning lights came on, check vsc message came on and my brakes stopped working. I was leaving my parking lot and got halfway down the block when this occurred. I could not brake so I let the car roll to a stop and used the curb to make a complete stop. Car I had not moved since I drove it really slow to house.

Brake comes on, abs light comes on and it becomes difficult to brake (brakes are hard). Then after an hour or so the lights go off and brakes return to normal. I noticed that when it returns to normal there is a heavy bump, it actually feels like someone bumped you from the rear. This has happened off and on for about 3 months now. I took it to my mechanic thinking it was something minor, pads etc. And it was not that. On 11/28/18 I took it to the dealership. They found nothing wrong. Not sure what else can be done. This is very frustrating and potentially dangerous. Because this problem can happen at any time with no warning, it has happened while driving and also starting the vehicle. My personal mechanic did find some information that may pertain to this problem (warranty enhancement program - ze1 2007 - 2011 model year Camry Hybrid vehicles extension of warranty coverage for brake actuator assembly and skid control ecu/break pedal sensor) service campaign bulletin ref# t-cp-ze1, date of issue July 1, 2014.

Tl-the contact owns a 2009 Toyota Camry Hybrid. The contact stated that while driving at 10 mph the vsc and abs warning lights illuminated and the brakes seized. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the technician replaced the brake cylinder. The contact stated that the failure recurred twice. The manufacturer was not notified of the failure. The approximate failure mileage was 73,000. Ah.