my Honda Accord headlights keep flickering what’s causing this

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, multimeter, socket set, replacement headlight bulbs, cleaning supplies.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical shock.

2. Inspect and Replace Headlight Bulbs

• Remove the headlight assembly cover.
• Disconnect the wiring harness from the bulb.
• Twist the bulb counterclockwise to remove it from the socket.
• Inspect the bulb for any signs of damage; replace with a new bulb if necessary.
• Reinstall the bulb by twisting it clockwise back into the socket.
• Reconnect the wiring harness and secure the headlight assembly cover.

3. Check and Replace Headlight Relay

• Locate the fuse box and identify the headlight relay.
• Remove the relay and test it with a multimeter to check for continuity.
• If defective, replace it with a new relay of the same rating.
• Reinstall the relay in the fuse box.

4. Inspect Wiring and Battery

• Visually inspect wiring harnesses for frayed wires or loose connections.
• Clean battery terminals and ensure they are tight.
• If corrosion is present, clean it with a wire brush and a mixture of baking soda and water.

5. Test Alternator Output

• With the engine running, use a multimeter to check voltage at the battery (should be between 13.7V to 14.7V).
• If the voltage is outside this range, the alternator may need to be replaced.