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Published on January 5th, 2024
Innova R&D Team
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Few components are as essential to driving safety as the Brake Light Switch. This part plays a pivotal role in ensuring the safety of the vehicle and its occupants. This article outlines operation of the Brake Light Switch and its importance to vehicle operation, identifies symptoms of a faulty switch and provides troubleshooting and maintenance recommendations.
The Brake Light Switch, commonly known as the BLS, is a fundamental component in modern vehicles. Its primary function is to activate the brake lights when the brake pedal is pressed. This action alerts drivers behind the vehicle that it is decelerating or stopping. This indication is critical to preventing rear-end collisions. In addition to this crucial safety function, the Brake Light Switch also plays a role in disengaging cruise control systems and activating the shift interlock.
Brake Light Switches come in various types, but the two primary types are:
A malfunctioning BLS can lead to various safety and operational issues in a vehicle. Common signs of a faulty BLS include:
Brake-Shift Interlock Issues
Several factors can lead to a malfunctioning Brake Light Switch:
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When a faulty Brake Light Switch is suspected, follow these steps to confirm the issue:
Check for Physical Damage
Check the Switch Circuit
Innova Tool Checking DTCs
Replacing a malfunctioning BLS is typically a straightforward procedure, with costs ranging from $10 to $50. However, prices may vary depending on factors such as the vehicle’s make and model, as well as regional labor rates.
The Brake Light Switch is a critical component in ensuring road safety. Its role in alerting fellow drivers that a vehicle is slowing or stopping is paramount in preventing rear-end collisions. Its presence underscores the importance of even the simplest parts in the ever-evolving automotive landscape.
Sometimes, it helps to just push ahead and take a leap of faith! Learn more about our OBD2 scanners and how it can help diagnose the hidden issues with your vehicle.Get Started
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