MC-10157076-9999 PDF

A service bulletin addressing issues related to the starter battery discharging due to excessively high quiescent current. The document highlights a complaint where the engine cannot start because the battery voltage is too low. It identifies the HERMES software in certain Mercedes-Benz models as a potential cause, which may keep the CAN awake, leading to battery discharge. The remedy involves a software update to HERMES communication module to prevent the issue. The bulletin provides the relevant operation numbers and damage codes necessary for addressing the problem.