Frst the passenger door locks would cycle.( go up and down) now the driver side door is doing the same thing. Is it the controllers or soleniods? Why both..help
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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).