2007 Mercedes E-Class Owner's Manual - Page 323

Operation At the gas station by pressing the KEYLESS-GO* start/stop button. Open the driver's door (with the driver's door open, starter switch is now in position 0, same as SmartKey removed from starter switch). Remove the SmartKey from the starter switch. Open the fuel filler flap by pushing at the point indicated by the arrow. The fuel filler flap springs open. Turn the fuel cap to the left and hold on to it until possible pressure is released. Take off the cap and set it in the recess on the fuel filler flap. To prevent fuel vapors from escaping into open air, fully insert filler nozzle unit. Only fill your tank until the filler nozzle unit cuts out - do not top off or overfill. Warning! G i Gasoline engine: Only use premium unleaded gasoline with a minimum Posted Octane Rating of 91 (average of 96 RON/86 MON). Information on gasoline quality can normally be found on the fuel pump. For more information on gasoline, see "Premium unleaded gasoline (gasoline engine)" ( page 496), see "Fuel requirements" ( page 496) and the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center. Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gas to spray back out when removing the fuel pump nozzle, which could cause personal injury. Replace fuel cap by turning it clockwise until it audibly engages. Close the fuel filler flap. i Diesel engine: Only use commercially available vehicular ULTRA-LOW SULFUR DIESEL FUEL (15 ppm SULFUR MAXIMUM). Information on diesel quality can normally be found on the fuel pump. For more information on diesel fuels, refer to the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center. i Leaving the engine running and the fuel cap open can cause the yellow fuel tank reserve warning lamp to flash and the malfunction indicator lamp ú (USA only) or the malfunction indicator lamp ± (Canada only) to illuminate. For more information, see also "Practical hints" ( page 384). i Diesel engine: If you have driven the vehicle until the tank is empty, the fuel system needs to be bled ( page 459). 322