Problems with fuel and the fuel tank

Problem Possible causes/consequences and - Solutions
Fuel is leaking from the vehicle. !!! Risk of explosion or fire !!! The fuel line or the fuel tank is defective.

•► Turn the SmartKey to position 0  in the ignition lock immediately and remove it.

•► Do not restart the engine under any circumstances.

•► Consult a qualified specialist workshop.
The fuel filler flap cannot be opened. The fuel filler flap is not unlocked.

or
The SmartKey battery is discharged.

•► Unlock the vehicle using the mechanical key.

•► Open the trunk lid or the tailgate.

•► Manually unlock the fuel filler flap using the emergency release

The fuel filler flap is unlocked, but the opening mechanism is jammed.

•► Consult a qualified specialist workshop.
The engine will not start. The fuel tank of a vehicle with a diesel engine has been run completely dry.

•► Refuel the vehicle with at least 5.3 US qt (5 liters) of diesel.

•► Turn the ignition on for at least 10 seconds.

•► Start the engine continuously for up to 10 seconds until it runs smoothly.
or
•► Start the engine via the touch-start function. To do this, turn the SmartKey to position 3 in the ignition lock and then release it immediately.

If the engine does not start:

•► Turn the ignition on again for approximately 10 seconds.

•► Start the engine again continuously for up to 10 seconds until it runs smoothly.
or
•► Start the engine again via the touch-start function.

If the engine does not start after three attempts:

•► Consult a qualified specialist workshop.
    See also:

    Position of the steering wheel when the EASY-ENTRY/EXIT feature is active
    The steering wheel swings upwards when you: • remove the SmartKey from the ignition lock • open the driver's door and KEYLESS-GO is in position 1 • open the driver's door and the SmartKey is in pos ...

    Superlative ride comfort, outstanding handling dynamics and excellent offroad performance
    The AGILITY CONTROL suspension on which the Mercedes-Benz GLK-Class is founded displays a high level of flexibility and resolves a conflict of aims that particularly affects the SUV class, where c ...

    Checking tire pressure manually
    To determine and set the correct tire pressure, proceed as follows: Remove the valve cap of the tire that is to be checked. Press the tire pressure gauge securely onto the valve. Read the tire ...