Fuel filler flap
The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESSGO.
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.
Example: Sedan
1. To open the fuel filler flap
2. To insert the fuel filler cap
3. Tire pressure table
4. Fuel type
See also:
Removing the mechanical key
Push release catch 1 in the direction of the arrow and at the same time,
remove mechanical key 2 from the SmartKey.
...
Important safety notes
Your vehicle may be equipped with a sliding
sunroof or a panorama roof with power tilt/sliding panel. In the following
section, the
term "sliding sunroof" refers to both types of
sli ...
Exterior & Styling
Particularly from the rear, the GL's appearance looks a bit like Mercedes'
original M-Class — so much so that a passenger walked up to an older M thinking
it was the GL. The GL550's 21-inch wheels ...