If your Honda Fit’s brake light isn’t working, you’ll need to replace the bulb or the entire light assembly depending on the model. In most Fits, the side brake lights are accessed from inside the trunk, while the center high‑mount brake light (CHMSL) at the top of the hatch may require interior trim removal. Some newer Fits use LEDs for the CHMSL, which can be non-serviceable and require replacement of the whole unit rather than a bulb.
Brake lights are essential for safety and legal compliance. The exact procedure varies by model year and trim, with earlier generations often using replaceable bulbs in the tail light assemblies and later models sometimes relying on LED modules for the CHMSL. This guide covers the common, bulbs-based replacements typical of many Honda Fits and notes where LED assemblies differ.
Know what you’re dealing with in your Honda Fit
The Honda Fit uses two brake-light locations on many models: the side tail light assemblies (which contain the brake, tail, and turn signals) and the center high‑mount brake light (CHMSL) on the hatch. Bulbs in the side assemblies are usually replaceable, while the CHMSL may be an LED module that isn’t user‑serviceable. Always check your owner’s manual or inspect the bulb to confirm type before buying replacements.
What you’ll need
Before you start, gather common hand tools and the correct replacement bulb(s). The exact bulb type depends on your year and trim, so verify by removing the existing bulb or checking the manual. If you have an LED CHMSL, you’ll likely replace the entire light assembly rather than a single bulb.
Replacing the side tail light brake bulb (rear exterior)
Below is a typical sequence for accessing and changing the brake bulb in the side tail light assembly. Some models may differ slightly, so adapt as needed and consult your manual if you’re unsure.
- Open the trunk and locate the access panel or trim on the inside of the rear corner where the tail light sits.
- Remove the panel or trim cover that hides the tail light housing. You may need a flat tool or small screwdriver to release plastic fasteners.
- Unplug the wiring connector from the tail light bulb socket by pressing the tab and pulling straight out.
- Unclip or twist the bulb socket counterclockwise to release it from the housing.
- Remove the old bulb by gently pulling it straight out of the socket. Handle the bulb by the base; avoid touching the glass with your fingers.
- Insert a new bulb of the same type, reinsert the socket into the housing, reconnect the wiring, and reattach the trim panel.
After you’ve completed the steps, test the brake light by pressing the brake pedal with the ignition on (or by using the manual brake light test if available) to verify the replacement works properly.
Replacing the center high-mount brake light (CHMSL)
The CHMSL sits at the top of the rear hatch. Some Fits use a replaceable bulb; others use an LED module that isn’t serviceable. If your CHMSL is incandescent and replaceable, follow these steps. If it’s LED, you may need to replace the entire light assembly.
- Open the hatch and locate the CHMSL cover or trim panel at the top of the rear window.
- Remove the interior trim or plastic cover to access the CHMSL housing. This may involve prying out a panel or removing a few screws.
- Disconnect the electrical connector from the CHMSL socket. Depending on the model, you may need to twist or unclip the socket.
- Remove the old bulb (if applicable) from the CHMSL socket by pulling it straight out. If you’re dealing with an LED module, skip to assembly replacement guidance.
- Insert the new bulb into the socket and reattach the connector. If you’re replacing an LED module, install the new CHMSL unit according to the manufacturer’s instructions.
- Reinstall the CHMSL cover or trim, then test the CHMSL by applying the brakes to ensure it illuminates correctly.
Note: If your CHMSL is an LED unit, replacing a single component is often not possible. In that case, you’ll typically replace the entire lens/assembly or contact a dealer for the proper module. Always ensure you use the correct replacement part for your specific year and trim.
Testing and safety after replacement
With the lights reassembled, turn on the ignition and press the brake pedal. Confirm both the tail-light brake function (the lower bulbs) and the CHMSL illuminate as expected. If any light remains out, double-check the bulb orientation, socket connections, and fuses. If the bulb keeps burning out or you notice corrosion, check the wiring and seals for moisture intrusion.
Troubleshooting and when to seek help
If you replace a bulb and it burns out again quickly, inspect for water leaks into the tail light housing, faulty wiring, or a blown fuse. If you’re uncomfortable performing the steps or the light is LED (non‑serviceable), visiting a professional mechanic or a Honda dealer is recommended to avoid damage or incorrect installation.