Once you replace LED control unit and do coding using MB Star Xentry diagnostics tool,as it is mandatory for all ILS headlamps, this fault code will go away and lights start to properly. ILS LED headlights always have two modules per side, one is for powering up and converting power to make LED lights work it is called as voltage converter, it is always smaller in size and length and other one is much more longer shape and it is responsible for Intelligent Light system functions, low and high beam, adaptive function. The main cause of intelligent light system malfunction is damaged or faulty Continental LED Control unit also known as ballast or either controller.
When this kind of error message pops-out on your mercedes dashboard, it means that car has detected some kind of malfunction within headlights and ILS function won't work anymore, causing automatic lights, Daytime Running Lights, front LED turn signal (indicator) or low (main), high (dipped) beam to stop working properly as it is supposed to, additionally adaptive lights and automatic light levelling may not work as well. Intelligent Light Inoperative Malfunction ? Sometimes when module fails it pops out warning light message "check right left front headlamp" and it might cause LED daytime running lights (stripes) stop to work as well. Without a fully functioning control module, the Intelligent Light System will not work properly, and the benefits of the system will be ineffective. The control module, LED controller or ballast is an essential component of the Mercedes ILS as it controls the car's main beam functions. The most common cause of a Mercedes Intelligent Light System malfunction is due to a fault with the control module.
INTELLIGENT LED DRIVER CONTROLLER UPGRADE
ILS headlamps are factory fitted not for all mercedes cars, it depends on the specification, but we always recommend to upgrade halogen or standard led for Full LED Intelligent Light system headlights, as it will increase visibility at dark time of the day with extreme bright light on the road and of course will enhance the look of the car, specially at the night time you will be amazed how nice your car looks.
Mercedes-Benz has introduced new full LED Intelligent Light System headlights to their new shape cars such as E-class W212 S212 A207 C207 Facelift and W213 S213 C238 A238, B-class W246 W242, C-class W205, S205, A205, C205, CLS C218 X218 C257, GLE ML GLE W166, Vito W447, Sprinter W906, S-class W222, G-class W463, GLC W253 X253 Hatchback C253 Coupe and many other models. Driving without properly functioning headlights is dangerous to all road users and will also result in the car failing its MOT. If this happens, it is important to understand and rectify the problem even if there is no noticeable difference in headlight performance. An error message will be displayed stating, Intelligent Light System inoperative. So, how does Mercedes intelligent light system work? Whilst the ILS is usually reliable it is possible for it to malfunction. ILS technology has replaced previous generation Xenon and In some models, an active light function also helps to increase the swivel angle of lights when turning corners. The LED headlights with ILS function helps to illuminate 10m more road than traditional headlamps by using xenon gas discharge headlamps and advanced mechanics to control low and high beam headlight projection. The Mercedes Benz Intelligent Light System (ILS) uses LED adaptive lighting technology to enhance road visibility and make driving in low-light conditions safer.
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