The Door/Window Control Module, OEM part number 2129004502, is a critical component located in the front right door of your Mercedes-Benz. This module facilitates the operation of power windows, door locks, and other electrical functions associated with the vehicle's door system. It effectively communicates with other electronic components to ensure seamless operation. Common issues that may necessitate replacement include failure of window controls, unresponsive door locks, or damage from water ingress. This module is compatible with various Mercedes-Benz models, including the E-Class (2010-2016), C-Class (2008-2014), and GLK350 (2009-2015). Alternative part number includes 2129004302. Choose genuine OEM parts for dependable performance.