Mercedes-Benz GLK-Class: Refueling

Mercedes-Benz GLK-Class / Mercedes-Benz GLK-Class 1st Gen Owner's Manual / Driving and parking / Refueling

Important safety notes

WARNING WARNING

Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury.

Never allow sparks, flames or smoking materials near gasoline.

Turn off the engine before refueling.

Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact.

Direct skin contact with fuels and the inhalation of fuel vapors are damaging to your health.

WARNING WARNING

Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gasoline to spray back out when removing the fuel pump nozzle, which could cause personal injury.

of the wrong fuel result in damage to the fuel system and engine. Do not use diesel to refuel vehicles with a gasoline engine. Even small amounts of the wrong fuel result in damage to the fuel system and engine.

Otherwise, the fuel will enter the fuel lines. Notify a qualified specialist Do not switch on the ignition if you accidentally refuel with the wrong fuel.

Otherwise, the fuel will enter the fuel lines. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely.

Gasoline

Fuel grade

damaging the catalytic converter. You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter.

If engine running problems are apparent, have the cause checked immediately and repaired. Excess unburned fuel can otherwise enter the catalytic converter, leading to overheating and possibly causing a fire.

injection system could be blocked by particles from the fuel can. Use a filter when refueling from a fuel can. Otherwise, the fuel lines and/or injection system could be blocked by particles from the fuel can.

number of 91 (average value of 96 RON/ 86 MON). Only refuel with premium-grade unleaded gasoline with a specified minimum octane number of 91 (average value of 96 RON/ 86 MON).

You will usually find information about the fuel grade on the pump. If you cannot find the label on the pump, ask the staff for assistance.

You can find more information under "Fuel" (), or by contacting an authorized Mercedes-Benz Service Center or visiting http://www.mbusa.com (USA only).

Refueling

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 pump indicates the side of the vehicle.. The arrow  next to the filling pump indicates the side of the vehicle.

  1. To open the fuel filler flap
  2. To insert the fuel filler cap
  3. Tire pressure table
  4. Fuel type

Opening

  • Switch off the engine.
  • emove the SmartKey from the ignition lock.
    KEYLESS-GO: open the driver’s door. This switches the ignition to position 0, which corresponds to having removed the SmartKey. The driver’s door can be closed again.
  • Press the fuel filler flap in the direction of arrow 1.
    The fuel filler flap opens slightly.
  • Open the fuel filler flap.
  • Turn the fuel filler cap counter-clockwise and remove it.
  • Insert the fuel filler cap into the holder bracket on the inside of filler flap 2.
  • Completely insert the pump nozzle into the filler neck and refuel.
  • Only fill the tank until the pump nozzle switches off.

Closing Overfilling the fuel tank could damage the fuel system.

Closing

  • Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages.
  • Close the fuel filler flap.

flashes. In addition, the If you drive with the fuel filler cap open, reserve fuel warning lamp Check Engine warning lamp may light flashes. In addition, the up. A message appears in the multifunction display (). For further information 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, see ().

prevents the fuel filler flap from closing after the vehicle has been locked. 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.

Problems with fuel and the fuel tank

Problem

Fuel is leaking from the vehicle.

Possible causes/consequences and Solutions

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.

Problem

The fuel filler flap cannot be opened.

Possible causes/consequences and Solutions

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.
Automatic transmission
Parking

See also:


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