how do I fix my Honda Accord 10th Generation (2018-2022) rear brake lights not working

Honda Accord 8th Generation (2008-2012)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

612 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 rear brake lights not working on Honda Accord 10th Generation (2018-2022). Step-by-step guide with tools and parts needed.

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 or short circuits.

Symptoms

•No illumination of rear brake lights when the brake pedal is pressed
•Check engine or brake warning light illuminated on the dashboard
•Front brake lights functioning normally
•Bulb failure warning displayed (if applicable)
•Potentially dim or flickering lights when the vehicle is in operation

Diagnostic Steps

1
Inspect the rear brake light bulbs for any signs of burnout or damage.
2
Use an OBD-II scanner to check for any error codes related to the brake light system.
3
Check the brake light switch located near the brake pedal for proper operation.
4
Inspect the wiring harness and connectors for damage or corrosion.
5
Test the fuse for the brake lights using a multimeter or visual inspection.

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
•Phillips screwdriver
•Fuse puller (optional)

Parts Required

•Replacement brake light bulbs (typically 1157)
•Replacement brake light switch (if needed)
•Fuses (if blown)

Related Faults

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Symptoms

•No illumination of rear brake lights when the brake pedal is pressed

•Check engine or brake warning light illuminated on the dashboard

•Front brake lights functioning normally

•Bulb failure warning displayed (if applicable)

•Potentially dim or flickering lights when the vehicle is in operation

Diagnostic Steps

1
Inspect the rear brake light bulbs for any signs of burnout or damage.
2
Use an OBD-II scanner to check for any error codes related to the brake light system.
3
Check the brake light switch located near the brake pedal for proper operation.
4
Inspect the wiring harness and connectors for damage or corrosion.
5
Test the fuse for the brake lights using a multimeter or visual inspection.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the negative battery terminal to prevent electrical shock.

2. Replace Brake Light Bulbs

Tools Required: Phillips screwdriver, replacement brake light bulbs.
Sub-steps:
1. Open the trunk and locate the access panel or cover for the rear light assembly.
2. Remove the screws or clips holding the access panel in place.
3. Carefully pull the light assembly out of the housing.
4. Twist the bulb socket counterclockwise to remove it from the assembly.
5. Replace with a new bulb of the same specifications (typically 1157 or as specified by the owner’s manual).
6. Reinstall the bulb socket by twisting it clockwise and reassemble the light assembly.

3. Inspect and Replace Brake Light Switch

Tools Required: Screwdriver, multimeter (if testing).
Sub-steps:
1. Locate the brake light switch mounted on the brake pedal assembly.
2. Disconnect the electrical connector from the switch.
3. Test the switch using a multimeter to ensure it is functioning (check for continuity when the pedal is depressed).
4. If faulty, remove the switch by unscrewing it from the bracket.
5. Install the new brake light switch by reversing the removal process.

4. Check Wiring and Fuse

Tools Required: Multimeter, fuse puller (if necessary).
Sub-steps:
1. Inspect the wiring harness for any visible damage or signs of wear.
2. Use a multimeter to test the voltage at the brake light connector.
3. If there is no voltage, trace the wiring back to the fuse box and check for continuity.
4. Locate the brake light fuse in the fuse box and check if it is blown. Replace it with a fuse of the same amperage if needed.