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<h2><span style="font-size: 18px;">What is a wear sensor on brake pads?</span></h2>
<p><span style="font-size: 14px;">A brake pad wear sensor on a car is a small electronic device that is attached to the brake pads in a vehicle. It is designed to alert the driver when the brake pads are worn down and need to be replaced.</span></p>
<h2><span style="font-size: 18px;">How does the brake pad wear sensor work?</span></h2>
<p><span style="font-size: 14px;">The brake pad wear sensor works by monitoring the thickness of the brake pad. It is typically made up of a small metal tab or wire that is attached to the brake pad. As the brake pad wears down over time, the metal tab or wire gets closer to the brake rotor. When the brake pad wears down to a certain point, the metal tab or wire will make contact with the brake rotor, creating an electrical circuit that triggers a warning light on the dashboard of the car.&nbsp;</span></p>
<p><span style="font-size: 14px;">The warning light is usually a red circle with an exclamation point in the center, and it may also say "Brake" or "Brake Pad Wear" on it. When the warning light comes on, it is important to have the brake pads replaced as soon as possible to ensure that the brakes continue to work effectively and safely.</span></p>
<h2><span style="font-size: 18px;">Do all cars have a brake wear sensor？</span></h2>
<p><span style="font-size: 14px;">No, not every car is equipped with a brake wear indicator on it. Generally speaking, the presence of a brake pad wear sensor can depend on the make and model of the car, as well as the year it was manufactured. For some newer cars, especially luxury vehicles, brake pad wear indicator is a standard feature. Some entry-level and budget-friendly vehicles, however, may not have this device.</span></p>
<h2><span style="font-size: 18px;">Brake pad wear sensor replacement</span></h2>
<p><span style="font-size: 14px;">To replace a brake pad wear sensor, you need to first locate the sensor on the inside brake pad closest to the brake caliper before disconnecting the electrical connector. Then remove the old sensor by employing some tools. And you are ready to install the new brake wear indicator. Don&rsquo;t forget to reconnect the electrical connector to test the new wear sensor and ensure that the warning light on the dashboard goes out. If you are not comfortable performing the replacement yourself, it is recommended to have a qualified mechanic do the job.</span></p>

Brake Pad Wear Sensor

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BMW 330i Brake Pad Wear Sensor