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 
flashes.
In
addition, the 
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:
Optional Features
A number of packages and individual options are available for the GLK350. The
Premium Package bundles a number of features, including a panoramic moonroof,
power liftgate, a memory feature, Sirius ...
Storing settings
With the memory function, you can store up
to three different settings, e.g. for three
different people.
The following settings are stored as a single memory preset:
• seat, backrest, head res ...
Brake fluid level
If you notice that the brake fluid level in
the brake fluid reservoir has fallen to the
MIN mark or less, check the brake system
immediately for leaks. Also check the
thickness of the bra ...