my Skoda Octavia NFL (2020-Present) has the ABS light on and traction control disabled, what's wrong...

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is turned off.
• Disconnect the negative battery terminal to prevent any electrical shorts.

2. Retrieve Diagnostic Codes

• Reconnect the battery.
• Use an OBD-II scanner to retrieve any stored codes related to the ABS and traction control system.
• Note down the codes for reference during repairs.

3. Inspect Wheel Speed Sensors

• Lift the vehicle using a jack and secure it with jack stands.
• Remove the wheel to access the wheel speed sensors.
• Inspect each sensor for physical damage, dirt, or corrosion.
• Clean the sensors using an appropriate cleaner if necessary.

4. Check Brake Fluid Level

• Locate the brake fluid reservoir.
• Ensure that the fluid level is between the minimum and maximum marks.
• If low, top up with the manufacturer's recommended brake fluid type (usually DOT 4).

5. Inspect ABS Control Module Connections

• Locate the ABS control module, typically found near the brake master cylinder.
• Visually inspect the wiring harness and connectors for signs of wear, corrosion, or loose connections.
• Reconnect any loose wires securely.

6. Test ABS Pump and Relay

• Reconnect the battery and turn the ignition on (do not start the engine).
• Listen for the ABS pump to engage; it should activate for a few seconds.
• If there is no sound, use a multimeter to check the relay functionality and replace if necessary.