how to fix Honda Civic 10th Generation (2016-2021) headlights not working

Honda Civic 11th Generation (2022-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

critical

Severity

3 min read

554 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix headlights not working on Honda Civic 10th Generation (2016-2021). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock.
•Allow the engine to cool before handling any components near the headlights.

Symptoms

•Headlights do not illuminate when activated
•Dashboard indicator for headlights may be lit or malfunctioning
•High beams may not work while low beams are inoperative
•Possible flickering of headlights prior to failure
•No sound from headlight relay when switch is activated

Diagnostic Steps

1
Inspect the headlight bulbs for any signs of burnout or damage.
2
Check the headlight fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for any related error codes that could indicate electrical issues.
4
Test the headlight switch for functionality using a multimeter.
5
Inspect the wiring harness and connectors for corrosion or loose connections.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Pliers
•Fuse puller

Parts Required

•Headlight bulbs (H11 for low beams, 9005 for high beams)
•Replacement fuse (if necessary)
•Headlight switch (if necessary)

Related Faults

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Diagnostic Steps

1
Inspect the headlight bulbs for any signs of burnout or damage.
2
Check the headlight fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for any related error codes that could indicate electrical issues.
4
Test the headlight switch for functionality using a multimeter.
5
Inspect the wiring harness and connectors for corrosion or loose connections.

Solution

1. Preparation

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

2. Inspect and Replace Headlight Bulbs

Sub-steps:
1. Open the hood and locate the headlight assembly.
2. Remove the dust cover (if applicable) to access the bulb socket.
3. Disconnect the bulb's electrical connector by pressing the release tab.
4. Remove the old bulb by twisting it counterclockwise and pulling it out.
5. Insert a new bulb (H11 for low beams, 9005 for high beams) by twisting it clockwise into the socket. Avoid touching the glass with bare hands.
6. Reconnect the electrical connector and replace the dust cover.

3. Check and Replace the Headlight Fuse

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the engine compartment).
2. Identify the headlight fuse using the diagram on the fuse box cover.
3. Remove the fuse using a fuse puller or needle-nose pliers.
4. Inspect the fuse for continuity (a blown fuse will have a broken filament).
5. Replace with a new fuse of the same amperage rating.

4. Test the Headlight Switch

Sub-steps:
1. Locate the headlight switch on the steering column or dashboard.
2. Disconnect the switch harness by pressing the release tab.
3. Use a multimeter to check for continuity across the switch terminals when activated.
4. If there is no continuity, replace the headlight switch.