Soft close door stopped working
My driver side door handle exhibited the exact same behaviour as yours. It used to pop open very easily, but after my soft close broke down, it became much heavier, requiring a lot more force to pull open.
I didn't think much of it, and continued to use the car normally, for perhaps a few weeks. But then the problem escalated, and my driver side handle got outright 'stuck' in its little cave, unable to come out. See this video below.
The door handle mechanism seems very delicate and problem-prone this generation. So best to get yours fixed right now, lest they turn into bigger headaches down the road.
My driver side door handle exhibited the exact same behaviour as yours. It used to pop open very easily, but after my soft close broke down, it became much heavier, requiring a lot more force to pull open.
I didn't think much of it, and continued to use the car normally, for perhaps a few weeks. But then the problem escalated, and my driver side handle got outright 'stuck' in its little cave, unable to come out. See this video below.
See this video.
The door handle mechanism seems very delicate and problem-prone this generation. So best to get yours fixed right now, lest they turn into bigger headaches down the road.
Well, mine was predicatably constant. I cannot help but feel that the eventual pop-out failure was related to me constantly pulling open the door handle with many times the force it was designed to handle.
Well, mine was predicatably constant. I cannot help but feel that the eventual pop-out failure was related to me constantly pulling open the door handle with many times the force it was designed to handle.
Duplicated customer's concern: left front soft close is inoperative. Connect battery charger and perform a quick test. The left front door control
unit has a new software update available. * Perform software update successfully * Technician also found a software update available for the
Electronic Ignition Central Gateway. * Software update completed successfully* . The left front door soft close still INOP. As per guided test inspect
wires and connectors from the left front door lock actuator to left front door control module. Disconnect & negative battery cable end. R&R left front
door panel ( AR72.10-P-6575S ). R&R left front door control module ( AR72.10-P-0900S ). Inspection results- > No loose connections found. As per
guided test replace door lock actuator. Fault code current & stored- > B25BF01 The door lock has a malfunction. There is a general electrical fault. -
> R&R left front door lock actuator. - > Replaced actuator ( part # A 099 720 99 01 ). Put everything back in reverse order. Connect SDS and clear
all stored fault codes. The left front door soft close is working intermittently. The left front door power closing actuator has an intermittent
malfunction, component: M14/21. -> R&R door panel. R&R door control module. - > Replaced power closing actuator. Part # A 223 760 13 00. Put
everything back in reverse order. * Perform SCN coding after repairs. * Normalize the left front window successfully * Clear all stored fault codes.
The left front door soft close is working as factory designed. Verified repairs.




The moral to the story here is the software in our cars sometimes loses its mind and causes as sorts of issues. Mine did; and based on many other posts I've read in this forum, it appears that it has for others, too.
Moondogg - If the car resets itself after a period of time, I'd try to relax and rack this up to Gremlins in the system. I know it is frustrating to have issues like this on a car that cost you over $128K, but from someone that has also had the issue, it might save you some anxiety.
Thank you in advance for any suggestions or guidance.
The Best of Mercedes & AMG
Failed door actuator.




