my Skoda Octavia's headlights are flickering when I drive what's causing it

Solution

1. Preparation

• Gather tools: multimeter, socket set, wire brush, flashlight, and replacement bulbs or relay if needed.
• Ensure the vehicle is parked on a flat surface and the engine is off.

2. Inspect Headlight Bulbs

• Open the hood and locate the headlight assembly.
• Remove the headlight cover and disconnect the bulb socket.
• Inspect the bulbs for any signs of burning or damage; replace if necessary.
• Reassemble and test the headlights.

3. Test Battery and Alternator

• With the multimeter, check the battery voltage; if below 12.4V, consider charging or replacing it.
• Start the vehicle and recheck the voltage at the battery; it should read between 13.7-14.7V.
• If the voltage is not within the specified range, inspect and replace the alternator if necessary.

4. Check Wiring and Connections

• Visually inspect the wiring harness connected to the headlights for fraying or corrosion.
• Clean any corroded connections using a wire brush and reconnect securely.
• Ensure all ground connections are intact and clean.

5. Inspect Relay and Fuse

• Locate the fuse box and check the headlight relay and fuse; replace them if they show signs of damage or wear.
• Test the relay operation by swapping it with a similar one in the fuse box if available.