Sprinter fault memory lock issue

I had something similar happen on my Sprinter, it's a real pain. I seem to recall the active memory causing issues. Did you check the battery voltage first? That was my starting point.

The battery voltage was among the initial parameters assessed. Can you elaborate on what you encountered? Were the symptoms identical, and did you determine undervoltage to be the definitive cause of the memory lock?

Yes, undervoltage was the root cause in my case. After chasing a few other possibilities, that's what it came down to. Frankly, at that point, I just sent it to the workshop, it needs some experience for this kind of problems.

I appreciate the confirmation. Your experience validates my current thinking. It appears a visit to the workshop is indeed the most prudent approach. As predicted it was undervoltage and I got away with 240€. Many thanks.