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.
or
- Unlock the vehicle using the mechanical key.
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.
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.
If the engine does not start after three attempts:
- Consult a qualified specialist workshop.
    See also:

    The mbrace system
    The mbrace system provides different services, e.g.:  - automatic and manual emergency call  - Roadside Assistance call  - MB Info call To adjust the volume during an mbrace ...

    Useful information
    This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific diffe ...

    Targeted brake actuation: Active Blind Spot Assist
    Another innovation Mercedes-Benz offers for the Mercedes-Benz CL-Class is Active Blind Spot Assist, a system that makes use of a multi-stage warning concept. If the system detects that a lane chan ...