These are Toyota front ABS wheel speed sensors, commonly used on models like the Vitz, Yaris, and Highlander.
Function: These sensors monitor the rotational speed of each wheel to ensure the Anti-lock Braking System (ABS) functions correctly.
Part Numbers: The specific part numbers shown, such as 89543-52030, are essential for ensuring compatibility with your vehicle.
Signs of Failure: Common indicators that these sensors need replacement include an illuminated ABS warning light on your dashboard and potentially reduced braking performance