When the ABS (Anti-lock Braking System) light is illuminated on your car's dashboard, it indicates that there is a problem with the ABS system. While there can be various reasons for the ABS light to come on, one common cause is a faulty wheel speed sensor.

To fix the ABS light, you can try the following steps:

1. Inspect the wheel speed sensors: The wheel speed sensors are responsible for measuring the rotational speed of the wheels. Check if the sensors are dirty, damaged, or covered in debris. If so, clean them using an appropriate cleaner and inspect for any physical damage. Replace the sensor if necessary.

2. Check the ABS fuse and relay: Locate the ABS fuse and relay in the fuse box. Inspect the fuse to ensure it is not blown, and if necessary, replace it. Additionally, you can try swapping the ABS relay with a similar one from another system (e.g., horn or wipers) to check if the relay is the issue.

3. Inspect the ABS control module: The ABS control module is responsible for managing the ABS system. It is usually located under the hood or near the brake pedal. Check the wiring connections to the control module for any loose or corroded connections. Ensure that all the connectors are securely plugged in and are in good condition. If any issues are found, repair or replace the control module accordingly.

4. Scan for error codes: Use an OBD-II scanner to retrieve the error codes from the ABS system. These codes can give you information about the specific problem causing the ABS light to come on. Once you have the codes, you can search online or consult a service manual to determine the appropriate repair procedure.

If you have attempted the above steps and the ABS light still remains illuminated, it is recommended to seek professional help from a qualified mechanic. They have the necessary expertise and tools to diagnose and repair the ABS system accurately and efficiently.