leonielion48

Frontier Brake Light Failure

Hoping someone can help. I've got a 2021 Nissan Frontier with a gasoline engine and about 38k km on it. Recently, the brake lights stopped working, and the dashboard is throwing up an error message about the brake system. I plugged in my OBD scanner, and it's showing a fault related to the brake light switch. I've checked the bulbs, and they're fine. Could a bad switch really cause all this? I am a bit lost where to start.

The issue with the 2021 Nissan Frontier was a brake light failure accompanied by a dashboard error message related to the brake system. The OBD scanner indicated a fault with the brake light switch. After confirming the bulbs were fine and inspecting the switch for physical damage, it was suggested to replace the switch. Replacing the brake light switch resolved the problem, clearing the error message and restoring the brake lights' functionality.

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4 comment(s)

Sounds like the brake light switch is the prime suspect. A faulty switch can definitely cause those symptoms, especially the error message. It's a common issue. Have you tried visually inspecting the switch? Sometimes you can see if it's physically damaged or disconnected.

Thanks for the quick reply! I took a look at the switch itself. It seems to be connected properly, and I didn't notice any obvious damage. However, I am not really comfortable with electrical components and how they should function. Should I just replace the switch? Is there a way to test the switch to be 100% sure?

Given you're not super comfortable with electrical testing, and that the symptoms point so clearly to the switch, and you already looked over its physical condition, replacing the switch would be the most direct route, as long as you install it correctly. If that doesn't solve it then visit a workshop.

I replaced the brake light switch myself. Took all of 15 minutes, the error message is gone and the brake lights are working again! That also means I didn't need to visit a workshop and pay them. Thanks for the advice; it was a huge help!

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NISSAN

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FRONTIER