These little guys basically measure the thickness of your brake pads. They don't actually feel the thickness, though. What they do is monitor the position of a part connected to your brake pads – usually a little metal tab. As your pads wear down, that tab moves, and the sensor detects that movement. It then sends a signal to your dashboard, usually a warning light, letting you know it’s time to think about new pads. Some systems are a bit more sophisticated and can even tell you approximately how much life is left. Think of it as an early warning system for your brakes. It’s part of your overall braking system, of course, but it doesn't apply the brakes. It simply tells you when the friction material on your pads is getting dangerously low. They're usually fitted to the front wheels, sometimes the rear, depending on the vehicle. They work alongside your ABS and other safety systems. They're really important for safety and avoiding more expensive repairs. If you ignore the warning light, you risk wearing your pads down to the metal backing plate. That will damage your rotors – those are the discs the pads squeeze against – and you'll end up having to replace those too. Replacing rotors is a lot more costly than just replacing the pads. You’ll notice if your sensor fails, usually by the brake warning light staying on even after you’ve checked everything else. You can find these sensors, and a lot of other brake parts, over at Fixparts Online if you're planning to tackle this yourself. But definitely get it checked out if you’re not comfortable doing it. Shop smarter: Sensor (MPN 7L5907637A) is covered for 12 months!

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• Get parts made specifically for your Volkswagen, ensuring a perfect fit and reliable performance. • Volkswagen parts are quality-tested to meet strict standards, so you can be confident in their durability. • Using genuine Volkswagen parts helps maintain your vehicle’s value. • We offer a wide range of parts, from routine maintenance items to more complex components, all easily accessible. Drive with confidence – choose Volkswagen parts at FixParts Online.