<div> <h1>LED Headlight Ballast Control Module for MERCEDES-BENZ GLC W253 (2015-2023)</h1> <p>A factory-specification LED headlight control module that drives the LED headlight. It replaces an original unit that has failed or become unstable, returning the headlight to normal operation.</p> <p><strong>Features</strong></p> <ul> <li>Built to the original factory electrical specification</li> <li>Like-for-like replacement that matches the original mounting and connector</li> <li>Delivers stable, consistent light output for safe night driving</li> </ul> <p><strong>Specifications</strong></p> <p><strong>OEM Numbers:</strong> A2139002434, 2139002434</p> <p><strong>Fitment &amp; Care</strong></p> <p>Mounts at the factory ballast position using the existing wiring and connector. Fitting is best carried out by a qualified auto-electrician, as some vehicles need the unit coded or programmed. Supplied as a single unit; no routine maintenance required.</p> </div>