TypoQueen

I just changed the primary battery. I am inquiring if the white font 4-digit number located on the center top surface of the battery represents the week and year of manufacture (e.g., 46 15), akin to the etched code on the battery connection of the main battery. I suspect that my auxiliary is the original battery.

I will accomplish that! Thank you very much

I apologize; I need to update my profile to reflect my 2015 E-Class Coupe. I will replace it and see the outcome. Thank you.

Greetings to everyone, My vehicle was in the shop for two months, and upon its return, I saw a "auxiliary battery malfunction" notification on the dashboard, leading me to consider that it may need charging or replacement. I assessed the battery's condition, and the voltmeter indicated a healthy charge of 12.6V. Additionally, I connected it to the charger, which displayed a Full Charge status. I connect the automobile to a charger, and it has provided C073300, "Retrieve fault memory from control module."N10 (SAM Control Module) B1E211B The buffer battery is defective. The resistance limit has been surpassed. I have wire brushed the connections, nevertheless the same issue persists. Is the voltage measurement an inadequate indication of the battery's condition, or should I assess other components inside the vehicle? Thank you very much

It is likely not the only instance that day in which Halfrauds provided the incorrect portion due to unreliable guidance.

I would certainly maintain the whole main dealer service history, albeit I would be in the few. In my experience, maintenance at a big dealer is not much more costly than at a respectable independent, particularly when considering the value of recovery services.