See also:

General notes
WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-B ...

Safety systems
Display messages Possible causes/consequences and Solutions Risk of accidentABS (Anti-lock Braking System), ESP® (Electronic Stability Program), BAS (Brake Assist), PRE ...

Before changing a fuse
  Park the vehicle and apply the parking brake.   Switch off all electrical consumers.   Remove the SmartKey from the ignition lock. The fuses are located in various fuse boxes: ...