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:

    Folding the exterior mirrors in or out electrically
    - Make sure that the SmartKey is in position 1 or 2 in the ignition lock. - Briefly press button 1. Both exterior mirrors fold in or out. Make sure that the exterior mirrors are always fol ...

    Majestic drive systems: new V6 and V8 engines
    The ultra-modern engine line-up in all GL-Class models provides superlative drive comfort and compelling performance coupled with superior fuel consumption figures compared with other vehicles in ...

    Vehicles with a "Minispare" emergencyspare wheel
    ► Lift the trunk floor up. 1 Alignment bolt 2 Towing eye 3 Lug wrench 4 Ratchet wrench 5 Velcro fastener 6 Jack 7 Wheel bolts 8 Folding wheel chock 9 Fuse allocation chart 10 Stowage ...