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:
Important safety notes
WARNING
Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains
carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death.
Do not run the engi ...
Checking the coolant level
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
Turn the SmartKey to position
2 in the ignition lock.
On vehicles with KEYLESS-GO, press th ...
The bodywork: A first: frameless, all-aluminium doors
Intelligent lightweight construction plays a decisive role in bridging the
classic conflict of objectives between low weight and high strength in the new
CLS. The CLS is thus the first vehicle fro ...