how to troubleshoot my Volkswagen Golf MK7 (2015-2019) ABS light issue

Solution

1. Preparation

• Gather necessary tools and parts before starting.
• Ensure the vehicle is on a level surface and securely elevated with jack stands.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Scan and Retrieve Codes

• Use an OBD-II scanner to retrieve ABS-related trouble codes.
• Document any codes and refer to the service manual for troubleshooting specific codes.

3. Inspect Wheel Speed Sensors

• Locate the wheel speed sensors on each wheel hub.
• Clean sensors with a soft cloth to remove any debris.
• Ensure the connections are secure and free from corrosion.

4. Check ABS Fuse

• Locate the fuse box and identify the ABS fuse (refer to the owner's manual for the exact location).
• Remove the fuse and inspect it for continuity using a multimeter.
• Replace the fuse if it is blown with one of the same amperage.

5. Verify Brake Fluid Level

• Inspect the brake fluid reservoir; it should be filled to the "MAX" line.
• If low, top off with the recommended brake fluid type (usually DOT 4).
• Check for any leaks in the brake lines or around the master cylinder.

6. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the vehicle and check if the ABS light remains illuminated.
• Perform a test drive to ensure ABS functionality (look for normal braking response).