A funny thing is happening to my c/l system

[WAB]

Yesterday something funny started to happen wiyh my c/l system, w203 C220 CDI, when I lock/unlock the car on the fob the front passenger door button goes up and down like crazy with the result that sometimes it locks and at other times it will not. All the other doors work fine and so does the boot and fuel cap cover. Any ideas, anyone?

 

[television]

The bouncing button 203 syndrome, there are some post here if you do a search bouncing button, some have cured it by lubricating the rod, some have not

 

[star]

One of your door locks has a tiny broken spring in iy, its not fully going to the lock position because the spring has broken. have to replace said lock.