Skid Control Buzzer Circuit: Description
WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
The skid control buzzer sounds intermittently when the temperature of the actuator increases excessively during TRAC or A-TRAC system operation.
This buzzer sounds continuously when a low pressure malfunction occurs in the accumulator.