Skoda Octavia NFL (2020-Present) ABS light is on, how do I fix it?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the battery to ensure safety while working on the ABS system.

2. Check and Replace Brake Fluid

• Sub-steps:
  • Remove the brake fluid reservoir cap and inspect fluid condition.
  • If fluid is dirty or low, use a siphon to remove old fluid.
  • Refill with new brake fluid that meets Skoda specifications (typically DOT 4).

3. Inspect and Clean ABS Wheel Speed Sensors

• Sub-steps:
  • Locate the ABS wheel speed sensors at each wheel hub.
  • Disconnect the electrical connector from the sensor.
  • Remove the sensor from the hub using a socket set.
  • Clean any debris or dirt from the sensor and the mounting area.
  • Reinstall the sensor and reconnect the electrical connector.

4. Repair or Replace Faulty Wheel Speed Sensors

• Sub-steps:
  • If testing reveals a faulty sensor, remove the damaged unit.
  • Install a new ABS wheel speed sensor, ensuring it is properly seated.
  • Torque to manufacturer specifications (usually 8-12 Nm).

5. Check and Repair Wiring

• Sub-steps:
  • Inspect the wiring harness for any damage.
  • Repair any frayed wires using solder and heat shrink tubing or replace the entire harness if necessary.

6. Reconnect Battery and Clear Codes

• Sub-steps:
  • Reconnect the battery terminals.
  • Use the OBD-II scanner to clear any stored ABS fault codes.
  • Turn the ignition on and check if the ABS light is still illuminated.