Opening

- Switch off the engine.
- Remove the SmartKey from the ignition lock.
KEYLESS-GO: open the driver’s door. This switches the ignition to position 0, which corresponds to having removed the SmartKey. The driver’s door can be closed again.
- Press the fuel filler flap in the direction of arrow 1.
The fuel filler flap swings up.
- Turn the fuel filler cap counter-clockwise and remove it.
- Insert the fuel filler cap into the holder bracket on the inside of filler flap 2.
- Completely insert the pump nozzle into the filler neck and refuel.
- Only fill the tank until the pump nozzle switches off.

Overfilling the fuel tank could damage the Overfilling the fuel tank could damage the fuel system.

    See also:

    Everything considered: integral Mercedes-Benz safety concept
    The comprehensive Mercedes approach to integral safety also applies in the new R-Class. This trailblazing safety philosophy goes well beyond compliance with standardised crash test regulations. It ...

    Diesel
    Fuel grade Only refuel with ULTRA-LOW SULFUR DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). Using other diesel fuels could result in increased wear and damage to the engine and/or exhaust system. ...

    Activating/deactivating
    •► To activate: press the button. The indicator lamp above the button lights up. •► To switch off: press the button. The indicator lamp above the button goes out. The co ...