Brake Light On problems of the 2009 Nissan Murano

Vehicle shuts down completely with no warning as if it is being controlled by another power source. Had battery checked and alternator replaced twice. Also, had a diagnosis test performed multiple times. It yields no problems. The battery/brake light may come on prior to shut down. If it does, three seconds later vehicle is completely dead. Usually the vehicle is in motion - just driving on a roadway. Once shut down, you cannot move the vehicle and has to be towed.

Due to the faulty brakes on this vehcile I was involved in an accident on 02-27-18 during motion car ahead of me had no brake lights and made a sudden stop and when I went to stop my brakes went all the way to the floor and couldnt stop in time to avoid accident.

After starting from a cold start (parked overnight) I noticed the brake pedal was soft and went almost to the floor. There was no prior sign of brake failure and the car still could stop, just not as quickly or firmly as normal. Car was taken to a repair shop who diagnosed a leaking master cylinder but there was no brake failure warning light. After the shop replaced the master cylinder and bleed the system they found another leak in the abs controller/ecu module. An internal leak, and no repair is possible. The shop says they have spoken to Nissan and looked online but find no information about other similar braking system failures, no TSB's, no recalls. I find it very disturbing that two critical brake parts could both be leaking and failing, and the car showed no brake warning lights, no abs warning lights, no indication of any problem while the brakes had obviously already failed. This is a fairly low mileage single-owner vehicle which has not been in any accidents and has been maintained properly. The failed parts (brake master and abs controller/ecu are being held available for inspection.