NHTSA Complaint #11440411 — 2021 TOYOTA RAV4

We bought our new 2021 Toyota RAV4 Hybrid on Sept. 1, 2021, but didn't drive it on a highway until Oct. 4, 2021. On that day, I was driving on Interstate Hwy 70. I entered that highway near Copper Mountain, CO and was driving east to return to Denver. It is a big highway with wide, well marked lanes. I set my cruise control speed to 63 mph. Almost immediately, I noticed that the Lane Centering steering adjustment system seemed to be taking the car from close to the left lane line to close to the right lane line, and back and forth. A couple of times, it even drifted to or over the lane line and triggered the Land Departure Alert alarm. At first, I tried to overcome the automated Lane Centering adjustment by manually steering against it, but the swaying back and forth across the lane became increasingly wide and violent. I was unable to control it. It was terrifying. For a moment, I was sure that I would crash. I don’t know if I hit the brake pedal, but I did quickly press the CANCEL button on the cruise control, and that ended the swaying back and forth. The whole experience lasted probably less than one minute, and at no time did I notice any alarms or warning signals. I took the car to my dealership and asked them to check the functioning and settings of the cruise control and lane tracing assist functions. They told me that my settings were normal and that everything was working properly. I informed Toyota customer service about the problem and told them of my near crash. They consulted with my dealership's service department and repeated that everything was working properly. Neither the dealer nor Toyota customer service offered any explanation of reasons for my near crash. I have continued to drive the car, but I have tried to disable all the "safety" features that allow the car to take control of my steering. I am afraid to try to reproduce the problem myself, and I am quite sure that my dealer did not attempt to do that either.