Do Mercedes headlights need coding?
Almost all components need to be programmed and calibrated to the vehicle. Yes it needs to be programmed since you installed different modules, the car does not know that.
What is Mercedes variant coding?
Once SCN Coding is done on a control module, in many cases Variant coding is also required, which is customizing the control module to the actual conditions of the vehicle by changing the settings and values of various control variants, such as LHD/RHD, daytime running lamp ON/OFF, MPH/KPH, etc. What is SCN Coding and Variant Coding? Software Calibration Number (SCN) Coding is also known as ECU re-flashing which downloads the entire data to the control module’s memory, and the process is required when the control module needs to be replaced.