See also:

Cleaning the wiper blades
WARNING Before cleaning the windshield or wiper blades, switch off the windshield wipers and remove the SmartKey from the ignition lock. On vehicles with KEYLESS-GO, press the Start/Stop but ...

Please bear the following in mind
Resetting service interval display If the qualified specialist workshop, e.g. a Mercedes-Benz Center, carried out the maintenance work, the service interval display will be reset. Further infor ...

Fuse box in the engine compartment
  Make sure that the windshield wipers are turned off. WARNING Make sure that the windshield wipers are switched off and that the SmartKey is removed from the ignition lock before you ...