Morimoto X3B70 installation: 2010–2024 Toyota 4Runner

For the Morimoto X3B70 third brake light on a 2010–2024 Toyota 4Runner. This guide does not describe trim access on the other Toyota models listed for X3B70.

Use a #2 Phillips screwdriver and a suitable detail spray or paint cleaner. Do not use power tools to tighten the lamp.

X3B70: one replacement third brake-light assembly.
X3B70: one replacement third brake-light assembly.

1. Remove and unplug the factory lamp

Remove the two Phillips screws shown. Pull the lamp away from the vehicle, press the connector tab and disconnect the plug.

The two original mounting screws, marked in red.
The two original mounting screws, marked in red.
Press the connector release tab before unplugging the lamp.
Press the connector release tab before unplugging the lamp.

2. Clean the sealing surface and connect X3B70

Clean underneath the old assembly, especially around the wiring opening, so the new housing can seal against the vehicle. Connect the original Toyota plug to the new X3B70.

Clean the lamp mounting and sealing surface.
Clean the lamp mounting and sealing surface.
Plug the factory connector into the X3B70.
Plug the factory connector into the X3B70.

3. Secure by hand and test

Refit the two factory Phillips screws and tighten by hand. Do not overtighten or use power tools. Confirm the brake light functions correctly.

Installed X3B70 secured with the original screws.
Installed X3B70 secured with the original screws.

Download the original X3B70 4Runner manual

Product overview

Shop X3B70 and review its full Toyota fitment list