Brake lights not working, although the third brake light does work?

2005 HONDA ACCORD

99,000 MILES • 4 CYL • 2WD • MANUAL

GOLDENBOY1178

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Checked fuses, and bulbs, all good. Since the third brake light above the trunk works, not checked the brake light switch. Horn, turn signals and back up lights all work. What could be wrong?

Thank you!

Aug 26, 2022 at 9:45 AM

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STRAILER

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Yep, this happens when the left side of the dash fuse panel MICU goes out. here are the brake light wiring diagrams so you can see how the brake lights work, you can see the brake light switch splits off from the upper brake light to the two lower ones. Here is how to change out the MICU as well which is integrated inside the fuse panel. Check out the images below and let me know what happens.

Images (Click to enlarge)

Aug 26, 2022 at 11:34 AM