See also:

Removing and installing the cover in the front wheel arch
You must remove the cover from the front wheel housing before you can change the front bulbs. - To remove: switch off the lights. - Turn the front wheels inwards. - Slide up cover 1  and ...

Removing the towing eye
  Loosen the towing eye and unscrew it.   Attach cover 1 to the bumper and press until it engages.   Place the towing eye in the vehicle tool kit. ...

Charging the battery
WARNING Never charge a battery still installed in the vehicle unless a battery charger unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions tha ...