2004 Mercedes-Benz C240 Q&A
2004 Mercedes-Benz C240 Question: The front door locks on a 2004 Mercedes c240 will not work.
Mercedes has a very common issue with their door lock actuators. It is not uncommon for one or multiple to go out in close timing. I would recommend having a Mercedes certified mechanic remove the affected door panels and inspect, test and repair the necessary part(s). - ACAkalb