The contact owns a 2022 Tesla Model Y. The contact stated that while driving at various speeds with the Full Self-Driving (FSD) activated, the destination was entered, and the system announced the direction steps when suddenly the Full Self-Driving (FSD) disengaged independently causing the driver to be required to take control of the vehicle. During the independent disengagement of the Full Self-Driving (FSD), the vehicle abruptly decelerated. The contact was concerned that the failure could result in a crash if a rear vehicle was tailgating. In addition, the contact stated that the Full Self-Driving (FSD) independently disengaging occurred during excessive sun exposure. On a separate occasion, the contact stated that the Full Self-Driving (FSD) was engaged and driving at various speeds, and the vehicle independently maneuvered into oncoming traffic on a 4-lane road causing the contact to have to take over control of the vehicle. A crash was avoided; however, the contact was concerned that if there had been a median barrier it could have resulted in a crash. In addition, the contact stated there was a second occasion where the vehicle was in Full Self-Driving (FSD) and veered into oncoming traffic, and manual control of the vehicle was required. The failure was recorded via the Tesla App and the data was entered via AI. A dealer was contacted, and a service appointment was scheduled for a diagnostic test. The Tesla Service Advisor informed the contact that moisture entered the camera and the windshield causing the failure and it was a known issue, but only an interim repair was currently available. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 30,000.