The anti-lock brake system (ABS) light in an Acura TL is controlled by the ABS computer--a separate, standalone computer. The ABS computer actively monitors the ABS system to determine its functioning state. When the ABS computer senses a problem with the ABS system it stores a trouble code in its internal memory and illuminates the ABS warning light. An automotive scan tool is required to retrieve the trouble code from the ABS computer's memory and to turn off the ABS warning light.
Shift the Acura's transmission into park and turn off the engine. Turn the ignition to the "On" position without starting the engine.
Connect the scan tool's data cable to the Acura's diagnostic data port, located underneath the dashboard on the driver's side.
Power on the scan tool and select "ABS" from the main menu. Choose "codes" and then "clear all codes." Disconnect the scan tool from the vehicle.
Start the engine and verify that the ABS light is no longer illuminated.
An automotive scan tool is a small, digital computer unit designed to connect to vehicle's computer systems in order to perform diagnostic tests and procedures. These tools are available from automotive parts stores and automotive tool manufacturers.