my Genesis G70 headlights keep flickering when driving, what's wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the negative terminal of the battery to prevent electrical shock.

2. Inspect Headlight Bulbs

• Remove the headlight assembly by unscrewing retaining screws (if applicable).
• Pull out the headlight bulb and inspect for any signs of damage or loose connections.
• Replace the bulb if it appears burned out or damaged.
• Reinstall the headlight assembly and secure it.

3. Test Battery Voltage

• Reconnect the battery.
• Use a multimeter to check the battery voltage. It should read around 12.6 volts (not running) and between 13.7 to 14.7 volts (engine running).
• If the voltage is outside this range, consider replacing the battery.

4. Check Alternator Output

• With the engine running, use a multimeter to measure the voltage at the alternator. It should also be within the range of 13.7 to 14.7 volts.
• If the alternator is not producing the correct voltage, it may need to be replaced or repaired.

5. Inspect Headlight Relay

• Locate the headlight relay in the fuse box (consult the owner’s manual for the exact location).
• Remove the relay and test it for continuity using a multimeter.
• Replace the relay if it is faulty.

6. Examine Wiring and Connectors

• Visually inspect the wiring harness and connectors associated with the headlights for wear, corrosion, or loose connections.
• Clean any corroded connectors using electrical contact cleaner and ensure all connections are secure.