{"count":1,"message":"Results returned successfully","results":[{"odiNumber":11685675,"manufacturer":"Toyota Motor Corporation","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"08/06/2025","dateComplaintFiled":"09/08/2025","vin":"5TDKRKEC2RS","components":"SERVICE BRAKES","summary":"On rare occasions (about once every 500 miles), when uniformly applying force to the brake pedal, the deceleration suddenly ceases and the vehicle seems to jerk forward.  To a passenger, it feels like the driver's foot slipped off the brake pedal, but the driver continued to provide the same  uniform force to the brake pedal and lost all deceleration.  Typically, the driver is startled and presses significantly harder on the brake pedal jerking all occupants forward. The brakes re-engage and continue the deceleration at a much higher rate.  Toyota addressed this problem with TSB 4724 which involved reprogramming the brake actuator assembly.  This corrected the problem for about 3 months, but it is now occurring again.  When the car was taken to the Toyota dealer again, the technician stated that TSB 4724 was cancelled, he could not duplicate the action (even though he was told it only happened on rare occasions), and  claimed that the \"brakes function properly as they should.\"  Fortunately these loss of braking incidents have only occurred on dry pavement so that the driver did not lose control of the car when slamming on the brakes to compensate for the loss of deceleration. Coming down a hill on a snow covered road could have caused the vehicle to slide into an oncoming lane.  It is my speculation that there is a null spot that exists during certain circumstances which causes there to be a \"gap\" between when this hybrid vehicle transitions between the dynamic hybrid brake and the friction wheel brake.  Both braking systems independently work fine, but the transition between them (on rare occasions) does not occur continuously.  This causes the driver to experience an unexpected loss of braking which, under the right conditions, could cause the driver to loose control of the forward motion of the car. As an engineer, I feel it is unacceptable for a safety system (braking) to not properly operate 100% of the time! On a Toyota owner's site, others have seen the same.","products":[{"type":"Vehicle","productYear":"2024","productMake":"TOYOTA","productModel":"SIENNA HYBRID","manufacturer":"Toyota Motor Corporation"}]}]}