How to replace rear brake light 2013 Highlander?

The rear brake light on a 2013 Highlander is replaceable by swapping the bulb in the outer tail-light assemblies, or by replacing the center high-mount brake light (CHMSL) if it’s LED. Start by gaining access to the tail-light housing from inside the cargo area, swap the bulb, and reassemble. If the CHMSL is LED, the entire third brake light unit may need replacement.

In more detail, the Highlander uses two outer rear tail-light assemblies (left and right) that cover brake, taillight, and turn-signal functions, plus a center high-mount brake light mounted on the top edge of the rear hatch. Accessing these lights requires opening the rear hatch and removing interior panels to reach mounting screws and electrical connectors. The exact steps differ between the outer lights and the CHMSL.

What you’ll need

Before you begin, gather the tools and parts listed below. The correct bulb type depends on the lamp in your vehicle; verify by inspecting the existing bulb or checking the owner's manual.

Having the correct bulbs and tools on hand helps ensure a smooth replacement and a proper seal when reassembling the tail-light assemblies.

Replacing the outer rear brake light (left and right)

This section covers the two outer rear taillight assemblies that house the brake light bulbs. Follow these steps to replace a burnt-out bulb or the entire assembly if needed.

1. Open the rear hatch and access the interior trunk area to locate the tail-light housing. If necessary, remove a small interior trim panel to expose the mounting screws.


2. Disconnect the electrical connector from the tail-light housing by pressing the release tab and pulling the connector away from the lamp.


3. Remove the mounting screws or bolts that secure the tail-light assembly to the vehicle body. Keep the fasteners in a safe place.


4. Gently pull the tail-light assembly straight outward to free it from the body, being careful not to damage the wiring harness or clips.


5. Twist the bulb socket counterclockwise to release it from the housing, then pull the old bulb straight out of the socket.


6. Install the new bulb into the socket, ensuring it seats firmly, then reinsert the socket into the housing and twist clockwise to lock.


7. Position the tail-light assembly back into its mounting location, reinsert the screws/bolts, and reconnect the electrical connector.


8. Test the brake light by pressing the brake pedal with the hatch open to confirm illumination, then close the hatch.

If the bulb glows but the brake light remains dim or nonfunctional, inspect the wiring harness for corrosion or damaged connectors, and verify the fuse associated with the rear lighting circuit.

Replacing the center high-mount brake light (CHMSL)

The CHMSL sits along the top edge of the rear hatch. Depending on the vehicle’s configuration, it may use replaceable bulbs or be an LED module. On many 2013 Highlanders, the CHMSL is an LED unit and replacement typically means swapping the entire third brake light assembly rather than a single bulb.

1. Raise the rear hatch and locate the CHMSL access area, which may require removing interior hatch trim or an access cover.


2. Carefully remove the interior trim panel or cover to expose the CHMSL mounting screws and electrical connector.


3. Disconnect the electrical connector from the CHMSL by pressing the release tab and pulling it away from the unit.


4. Remove the CHMSL mounting screws and slide the unit out from the hatch opening.


5. If your CHMSL uses a replaceable bulb (older or specific trims), install a new bulb into the socket. If the unit is an LED module, replace the entire CHMSL assembly with a new unit recommended by Toyota or a trusted aftermarket supplier.


6. Reinstall the CHMSL by reversing the removal steps: insert the new unit, reconnect the wiring, replace interior trim, and secure with screws.


7. Test the CHMSL with the brake pedal to confirm it lights up consistently along with the outer brake lights.

Note: For many 2013 Highlanders, the CHMSL is LED-driven and not designed for bulb replacement. If it fails, the usual fix is to replace the entire third brake light assembly rather than attempting to swap an LED module.

Once complete, verify that all rear brake lighting functions (left and right brake lights, CHMSL) are working correctly and that the fittings are sealed to prevent water intrusion.

Safety and troubleshooting tips

Working on vehicle lighting involves electrical components and hot bulbs. Keep these tips in mind to stay safe and avoid damaging the vehicle:

• Turn off the ignition, engage the parking brake, and remove the key before starting work.


• Allow bulbs to cool before handling to prevent burns.


• Handle bulbs with a clean cloth or gloves; oils from skin can shorten bulb life.


• Make sure all connectors are fully seated and locked before test-driving.


• If after replacement the light still doesn’t work, check fuses, wiring for corrosion, and the possibility of a faulty ballast or control module (where applicable).

When in doubt, consult a professional or your Toyota service manual for model-specific instructions and recommended replacement parts.

Summary

Replacing the rear brake light on a 2013 Highlander typically involves swapping the bulbs in the outer tail-light assemblies or replacing the center CHMSL unit if it’s LED. Start by gaining access through the rear hatch, disconnecting the wiring, removing and replacing the bulb or the entire CHMSL assembly, and then reassembling and testing. Always confirm the correct bulb type for your exact trim and consider the possibility that the CHMSL may require a full unit replacement rather than a bulb swap. Following safety precautions and double-checking all connections will help ensure a reliable repair and proper rear lighting performance.