my Skoda Octavia NFL (2020-Present) headlights flicker when I drive, what should I do?

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, wire brush, electrical contact cleaner.
• Ensure the vehicle is parked on a flat surface and the engine is off. Disconnect the battery to prevent any electrical shock.

2. Battery Inspection

• Sub-steps:
  1. Remove the battery cover if applicable.
  2. Clean the battery terminals and connectors using a wire brush and electrical contact cleaner.
  3. Tighten any loose connections and ensure the battery is securely mounted.
  4. Reconnect the battery and ensure a tight fit.

3. Alternator Testing

• Sub-steps:
  1. Start the engine and use the multimeter to measure voltage at the battery terminals.
  2. The voltage should read between 13.7 to 14.7 volts; if not, the alternator may need replacement.
  3. If the output is low, check the alternator belt for wear or looseness and replace if necessary.

4. Headlight Inspection

• Sub-steps:
  1. Remove the headlight assembly according to the vehicle’s service manual.
  2. Inspect the bulb socket for corrosion or damage; clean or replace as needed.
  3. Check the bulb itself for proper seating and any signs of damage; replace if necessary.
  4. Reassemble the headlight assembly and ensure all screws and clips are secured properly.

5. Relay and Ground Connection Check

• Sub-steps:
  1. Locate the headlight relay in the fuse box and swap it with another relay of the same type to test functionality.
  2. Inspect the ground connections for the headlights, ensuring they are clean and secure.
  3. If any ground wires appear damaged, replace them with new wiring and connectors.