If your Lexus ABS light stays on, it means the ABS is not working properly. In most cases, the problem is a faulty ABS wheel speed sensor, but you won’t know without first reading the codes from the ABS module.
What you will need
- Simply connect your OBDII diagnostic tool to the diagnostic port located under the driver dash area.
- Turn on your ignition in two steps (Do not turn on your engine)
- Allow the OBDII tool to communicate with your car’s internal computer (protocol sorting)
- Select “Read Codes.” If your ABS has any issues, trouble codes should be visible.
- Fix the underlying problem. Once the problem has been fixed, select Clear fault codes to reset the ABS light.
In some vehicles, you may have to select the model/year of your car for communication to be initiated. If the ABS light is on due to a faulty ABS sensor, the scanner will display the position of the sensor. For example, a faulty FL Wheel Speed Sensor means the front left ABS sensor is defective.