The Mercedes benz is one of the most sophisticated vehicles on the market today most people are unaware of the hidden features from comfort to safety but it does not come without a price in general when a new feature is added to a vehicle you can bet that Mercedes is the first to put it into production from the Three point safety belt in the 70s to the Radar guidance system in the 2000s . The computer networking systems on the Mercedes is simular to that used on aircraft and does require coding especialy when a new componant has to be installed . Periodically computers and modules can loose part of there coding due to low voltage or battery replacement we recomend doing a full system scan on your system to ensure all systems are functioning correctly for optimal performance