I appreciate any assistance you can provide in advance.
I was travelling at approximately 60mph when the engine ceased functioning, without any commotion, sound, vibration, or odours. No excessive heat generation. Oil and water levels and status are standard.
The battery was functioning properly ten minutes prior to the start. Attempting to restart it produced a sound reminiscent of a depleted battery.
The AA arrived and, upon attempting to start the machine, it operated sluggishly and was consuming a substantial amount of current.The vehicle was operating smoothly without any problems previously.
There is an absence of cam chain noise during cold starts and at all other times.
It was proposed, and I intend to remove the serpentine belt to prevent the seizing of the alternator, AC compressor, steering pump, pulleys, and so forth. I would have anticipated some screeching or burning odours from the belt if that were true, but I am not a Mercedes expert, despite being a reasonably skilled mechanic.
I would surmise the starter as the culprit; however, I find it difficult to comprehend how a malfunctioning starter could initially halt the engine, particularly since I am not well-versed in the stop-start mechanism. The stop-start feature has consistently malfunctioned in the vehicle, yet this has not troubled me.
There was no power failure; I had accelerated quite vigorously, eased off to coast for a moment, and only realised the engine had ceased when I pressed the accelerator and observed no increase in RPMs.
I have encountered catastrophic engine failures throughout the years, and there were no indications whatsoever of any issues. It simply ceased. I utilised my Mercedes-specific diagnostic tool, but no pertinent codes were detected. A few points concerning interaction with the instrument cluster, yet I fail to perceive the connection. No aspects pertaining to cam timing or any engine-related matters.
Should anyone possessing greater firsthand experience with this have any insights or troubleshooting recommendations, I would be exceedingly appreciative.I possess general knowledge, yet lack specific information regarding this vehicle; I will detach the belt, although it appears somewhat cumbersome, so conducting other inspections may be advisable beforehand. My greatest apprehension is that the engine has become inoperative.
I appreciate it.