Less than 3000 miles when incident happened. while driving at 55 mph on a highway the dash screen said brake and a chime was heard. it was late evening 3 days ago and their was absolutely no other vehicles around me. my initial reaction was to brake however i did not. it also happened two additional times at about 45 mph on the final few miles from my home. the indicator did not stay on long enough to get a photo of it. when i returned home i filed a case with toyota usa. i then called them the next day. today i contacted the dealer about taking it in for the to check. at that time the service rep advised me there is a recall on the part sensor on the anti collision avoidance system. i received an email reply from toyota usa however the reply did not provide me with any information , other than the case was going to be entered into their database. they will place a foamy tape on the back of the sensor after running a diagnostic on it. this seems a bit under done and a band aid for what could be a safety hazard. if it is a water issue (no rain on the day it happened and didn't happen on the way to my destination) i researched the vin for the recall and i received "there is no recall associated with my vin, answer. hopefully the nhtsa will do a simple website search and see the numbers of people having this issue. i prefer not to have any safety issues while transporting my family in the vehicle.
While driving with the adaptive cruise control set a message will appear "radar cruise control unavailable clean sensor". this message will appear with no adverse weather conditions. due to this error the cruise control no longer works and the pre-collision warning system no longer works. also randomly a "brake!" message will appear and the vehicle automatically slams on the brakes when no emergency exists creating a hazard for vehicles behind.