Fuel filler flap
The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed
in the instrument cluster 
. The
arrow
next to the filling pump indicates the side of
the vehicle.
1 To open the fuel filler flap
2 To insert the fuel filler cap
3 Tire pressure table
4 Fuel type
See also:
Seating & Cargo
The GL550's front seats have a litany of power adjustments, including
adjustable stiffness for the side bolsters. Even with the bolsters and lumbar
support dialed all the way back, the seats are t ...
Useful information
This Operator's Manual describes all models and all standard and optional equipment
of your vehicle available at the time of publication of the Operator's Manual. Country-specific
diffe ...
Haven of calm: optimum vibration and acoustic comfort
The new M-Class promises relaxed and therefore safe motoring under all
possible (and even impossible) conditions. By paying close attention to detail
every step of the way, the development enginee ...