Closing

•► Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages.

•► Press the fuel filler flap closed until it engages audibly.

If you drive with the fuel filler cap open, reserve fuel warning lamp In flashes. In addition, the lamp may light up. A message appears in Check Engine warning lamp may light up. A message appears in the multifunction display.

For further information on warning and indicator lamps in the instrument cluster

Close the fuel filler flap before locking the vehicle. A locking pin otherwise prevents the fuel filler flap from closing after the vehicle has been locked.

    See also:

    Weight of optional extras
    The combined weight of those optional extras that weigh more than the replaced standard part and more than 2.3 kilograms (5 lbs). These optional extras, such as highperformance brakes, level co ...

    R 300 CDI BlueEFFICIENCY: low fuel consumption MPV
    As with all BlueEFFICIENCY models from Mercedes-Benz, the R-Class features a whole range of measures to reduce fuel consumption. In addition to the direct-injection diesel engine and the low-frict ...

    Purity
    Assuring the purity of DEF is particularly important with respect to avoiding malfunctions in the exhaust gas aftertreatment system. If DEF is pumped out of the DEF tank, e.g. during repair wo ...