The regeneration process can be actuated by the workshop with Star Diagnosis computer. But if the filter can be regenerated, it will never cause the engine to stall.
Only possiblity is that internals of the filter are loose and plugged up the exhaust so the engine cannot breathe at all.
Even with this fault, the engine will start and drive fine, only the power output will be redused maximum by half. So it is either a completely disintegrated diesel particulate filter(DPF), or another problem with injection. I suggest to remove the DPF completely just in case. If the car does not start- injection system must be checked, starting with low-pressure lines and fuel filter. Return flow of the injectors should be checked as well as other high-pressure system components.
i have not received an answer to my question can the filter be cleaned i think i need a mercedes benz expert not a general guy