The front door locks on a 2004 Mercedes c240 will not work. on 2004 Mercedes-Benz C240

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

1 answer
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).