| Switching the windshield wipers on/off 
 
 
 Changing the windshield wiper blades 
 Moving the wiper arms to the change position 
 Removing the wiper blades 
 
 
 Installing the wiper blades 
 
 Maintenance display 
 
 If the color of the maintenance display changes from black to yellow, the wiper blades should be replaced. The duration until the color changes varies depending on the usage conditions. | 
Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > General notes: Data storage
   Electronic control units Electronic control units are installed in your vehicle. Some of these are necessary for the safe operation of your vehicle, while some assist you when driving (driver assistance systems). In addition, your vehicle provides comfort and entertainment functions, which are also  ...