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KSE-100011• Front• Disc Brake Pad Wear Sensor Kits
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GeoBrakes stocks disc brake pad wear sensor kits confirmed to fit the Mercedes Benz 420sel, combining the wear sensor probe manufactured to the exact OEM probe length and contact resistance for the 420sel with connector hardware, retaining clips, and in pad-inclusive configurations the brake pads themselves, so the complete brake monitoring system on your Mercedes Benz 420sel is restored correctly in a single service.
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Standard/OE$6.13
7 items in stock
Select your vehicle to see compatible products and accurate pricing
Standard/OE$4.59
10 items in stock
Select your vehicle to see compatible products and accurate pricing
A brake pad wear sensor kit for the Mercedes Benz 420sel does one critical thing that a pad change alone cannot: it ensures the brake warning light on your 420sel dashboard accurately reflects the condition of the next set of brake pads. Without a new sensor on the Mercedes Benz 420sel, the warning system is non-functional from day one of the new pads, there is no advance notice for the next replacement cycle on your 420sel. On Mercedes Benz 420sel vehicles where a previous service skipped the sensor, the brake warning light may also remain on permanently after new pads are installed on the 420sel.
The kit for your Mercedes Benz 420sel includes the brake pad wear sensor probe unit manufactured to OEM contact resistance and threshold depth for the 420sel monitoring circuit, the wiring connector mating with the Mercedes Benz 420sel brake monitoring harness where required, the retaining clip or mounting bracket securing the sensor to the 420sel brake pad or caliper correctly, and in pad-inclusive kits, the brake pads for the Mercedes Benz 420sel with sensor pre-assembled at factory-correct position on the 420sel pad.
A brake pad wear sensor on the Mercedes Benz 420sel is a calibrated component manufactured to trigger the 420sel brake warning circuit at a specific remaining pad thickness. Too long and it triggers early on your Mercedes Benz 420sel, sending drivers for an unnecessary brake service with significant 420sel pad life remaining. Too short and it triggers late or not at all on the 420sel, leaving the driver with no advance warning as the Mercedes Benz 420sel pads approach the metal backing plate.
Wear sensor compatibility for the Mercedes Benz 420sel is more exacting than most brake components. Probe length, contact resistance specification, and connector pinout must all match the 420sel brake monitoring circuit exactly. A wrong-spec sensor on your Mercedes Benz 420sel either triggers warnings at the wrong pad thickness or fails to connect to the existing 420sel harness. Every kit in the GeoBrakes catalogue is sourced to OEM specification for the Mercedes Benz 420sel exact year and model, with front and rear positions listed separately.
How do I know if my Mercedes Benz 420sel has electronic brake pad wear sensors?
Check your Mercedes Benz 420sel owner's manual for a brake pad warning light in the instrument cluster section. Use the GeoBrakes vehicle selector to confirm whether your Mercedes Benz 420sel application requires an electronic sensor kit.
Can I buy the wear sensor separately from the brake pads for my Mercedes Benz 420sel?
Yes. GeoBrakes carries sensors as standalone components and as part of sensor kits for the Mercedes Benz 420sel. If replacing 420sel pads that did not include a sensor and the existing sensor has already triggered, a standalone sensor or sensor kit is the correct purchase for your Mercedes Benz 420sel.
Will the brake warning light turn off automatically after installing a new sensor on my Mercedes Benz 420sel?
On most Mercedes Benz 420sel vehicles, the brake pad warning light turns off once the new sensor is correctly installed and the ignition is cycled. On some Mercedes Benz 420sel European platforms, a diagnostic scan tool reset may be required. Check your 420sel service documentation if the light does not clear after installation.