Toyota Yaris Third Brake Light Not Working? Don’t Ignore This Small Warning Light
A burned-out third brake light may seem like a small problem, especially if your two main brake lights still work.
But that high-mounted light has an important job: it gives drivers behind you another clear signal that you are slowing down. On a compact hatchback like the Toyota Yaris, keeping that rear warning light working is an easy way to maintain both visibility and a clean factory-style appearance.
What Is the Third Brake Light For?
The third brake light, also called a high-level brake light or center high-mounted stop lamp, sits higher than the regular rear brake lamps.
Because of that position, it can be easier for following drivers to see—especially in traffic where the lower brake lights may be partially blocked by another vehicle.
When it stops lighting up, you lose one of the car’s most visible braking signals.
Common Reasons a High-Level Brake Light Fails
On an older hatchback, years of heat, moisture, vibration, and everyday use can eventually affect the light assembly or its electrical connection.
If your third brake light stays dark when the brake pedal is pressed, start by checking the fuse, wiring, connector, and related brake-light circuit. If the rest of the system checks out and the lamp assembly itself has failed, replacement may be the next step.
A Direct Replacement for 2012–2020 Toyota Yaris MK3 Hatchbacks
This Assosary rear third brake stop light is designed for compatible Toyota Yaris MK3 Hatchback models from 2012 through 2020.
It uses LED illumination and is listed as a direct replacement for original part numbers 81570-0D150, 81570-0D151, and 81570-0D152.
Check the Part Number Before Ordering
Even when the model and year look right, it is worth comparing your original lamp before buying. Check the mounting shape, connector, housing design, and part number whenever possible.
That quick comparison helps avoid ordering a light that looks similar but belongs to a different Yaris body style or market version.
Small Repair, Important Result
A third brake light is not a flashy upgrade, and that is exactly the point. It is a simple replacement part that helps restore the rear lighting system to the way it was meant to work.
If your Yaris high-level brake light is cracked, damaged, or no longer illuminating, replacing the assembly can bring back both visibility and a cleaner rear appearance.
