Mercedes-Benz CL550 headlight failure within a year, entire control unit replacement needed on Mercedes-Benz CL550

Some Mercedes-Benz CL550 owners report experiencing headlight failures that may require the replacement of the entire control unit within a year of purchase. These issues can arise from various factors, including defective components like the headlight assembly and ballast, which may sometimes be covered under warranty. Owners are advised to troubleshoot by checking electrical connectors, bulbs, and fuses before considering more extensive repairs. Regular inspection of headlights for signs of wear or damage and timely bulb replacement are recommended to prevent problems. Additionally, when facing headlight issues, it is wise to check the fuse first and consider replacing the factory-fit xenon control unit box ballast, as it often contributes significantly to headlight malfunctions. Seeking professional assistance is advisable for effective resolution of these issues.