Mercedes Headlight Level Sensor - Genuine Mercedes 2129050103

Product Information

Mercedes-Benz Exterior Lighting diagram for E350, CLS400, E250, CLS550, E550, & more

A headlight level sensor is a component in a vehicle’s lighting system that detects the vertical position of the vehicle’s headlights. It is part of the automatic headlight leveling system, which adjusts the angle of the headlights based on the vehicle's load and suspension height. This feature helps ensure that headlights illuminate the road properly adjusting based on the height of the vehicle over the road.

• Improper Headlight Beam Angle: One of the primary symptoms of a failing headlight level sensor is that the headlights may not adjust correctly. This could manifest as headlights pointing too high or too low, leading to poor visibility on the road or blinding oncoming drivers
• Headlights Not Leveling: If the headlight leveling system is not functioning at all, the headlights will remain in a fixed position, regardless of changes in vehicle load or terrain. This can result in inconsistent lighting performance

About Genuine Mercedes

The original parts used by Mercedes Benz to build your car are available as replacement parts under the “Genuine Mercedes Benz” brand. Manufactured under the direction of Mercedes Benz, expect excellent quality and a premium price since these parts are exclusively available through the Mercedes Benz Dealership network.

You may not realize this, but the parts that make up your Mercedes-Benz are not necessarily manufactured by Mercedes-Benz. No cause for concern, as Mercedes-Benz designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for Mercedes-Benz for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine Mercedes-Benz parts box and find an OEM branded part inside, simply with the addition of a Mercedes-Benz logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.