Skid Control Buzzer Circuit: Description
WARNING: This page is about a different car, the 2009 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
During VSC operation, the skid control buzzer sounds.
When performing a sensor check in test mode, the buzzer sounds when some of the sensor checks are completed. When a brake pad is overheated, the buzzer sounds as a warning.