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:
Setting the rear-compartment air
distribution using the rear control panel
Turn the SmartKey to position 2 in the
ignition lock.
Press rocker switch 13 or 16 up or down
repeatedly until the desired
air distribution symbol is shown in the
display. ...
BAS PLUS (Brake Assist System Plus)
BAS PLUS is only available in vehicles
equipped with DISTRONIC PLUS.
Observe the "Important safety notes"
section.
At speeds above approximately
4 mph (7 km/h), BAS PLUS assists you ...
Problems with PARKTRONIC
Problem
Possible causes/consequences and
Solutions
Only the red segments in the PARKTRONIC warning displays are lit.
You also hear a warning tone for approximately two second ...