The battery must always be sufficiently charged, as it is dependent not only on its useful life, but also on the correctness of the work of numerous electronic systems with microprocessors with main storage. Mercedes E-Class W211 is fitted with accumulator batteries with a central ventilation hole in the cover, so if the battery is replaced to avoid corrosion as a result of the acid flow, a similar battery must be selected. You should only disconnect the terminals of the battery when absolutely necessary. In cars up to the year 2006, the release of an untrained battery of the battery is known for failure of the rear SAM unit. The cost of the new block is about $700.
