How do I open the fuel door for the Mercedes Benz C180K? Leah October 24, 2025 06:59 Updated Locate the fuel door on the outside of the vehicle. It should be on the right side. Gently press down on the fuel door and it will pop open. To close it, push the door back in until you hear a click. Related articles Do I top up diesel or petrol for the Mercedes Benz C180K? How do I open the fuel door for the Mercedes Benz C180? How do I adjust the seat for the Mercedes Benz C180K? How do I switch on/off the headlights for the Mercedes Benz C180K? How do I refuel with the Esso fuel card and get the fuel PIN?