Mercedes-Benz E-Class: Refueling

Mercedes-Benz E-Class: Refueling

• Important safety notes
• Gasoline
• Diesel
• Refueling
• Fuel filler flap emergency release
• Problems with fuel and the fuel tank
• DEF

Important safety notes

WARNING
Gasoline and diesel fuels are highly flammable and poisonous. They burn violently and can cause serious injury.

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

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.

WARNING
Do not fill diesel tanks with gasoline. Do not mix diesel fuel with gasoline. Otherwise the fuel system and engine could be damaged. In addition, the vehicle could catch fire.

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

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

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.

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.

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).

Diesel

Fuel grade

Only refuel with ULTRA-LOW SULFUR DIESEL FUEL (ULSD, 15 ppm SULFUR MAXIMUM). Using other diesel fuels could result in increased wear and damage to the engine and/or exhaust system.

Never refuel with marine diesel or heating oil.

Do not mix these fuels with diesel fuels and do not use any special additives, as this may result in damage.

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

Usually, you will find information about the fuel grade on the pump. If you cannot find the label on the gasoline pump, ask the gas station staff.

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

Low outside temperatures

Do not use gasoline to refuel vehicles with a diesel engine. Never mix diesel with gasoline or kerosene, as this may result in damage to the engine or fuel system.

Diesel fuel with improved cold flow properties is available during the winter months. Further information on fuel properties can be obtained from oil companies, e.g. at gas stations.

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

Example: Sedan

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.

•► Remove 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.

•► Sedan: insert the fuel filler cap into the bracket on the inside of fuel filler flap 2.
or
•► Wagon: insert the fuel filler cap into the recesses in the fuel filler flap hinge arm horizontally from above.

•► Completely insert the pump nozzle into the filler neck and refuel.

•► Only fill the tank until the pump nozzle switches off.

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.

•► 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.

Fuel filler flap emergency release

WARNING
Avoid contact with the vehicle walls as they may contain sharp edges. Otherwise, you could injure yourself while releasing the fuel filler flap.

The emergency release is located in the trunk/cargo compartment behind the side trim on the right-hand side, when viewed in the direction of travel.

•► Open the trunk lid/tailgate.
•► Sedan: slide down the parcel net.
•► Open the side trim.
•► Remove the first-aid kit

•► Detach the emergency release from retainer 1.

•► Pull the emergency release in the direction of arrow 2.

The fuel filler flap is unlocked.

•► Open the fuel filler flap.

•► Wagon: remove the first-aid kit from the parcel net.

Depending on the vehicle's equipment, the first-aid kit is in the parcel net or behind the side trim panel.

Open the side trim.

•► Fold down the side trim.

•► Pull the emergency release in the direction of arrow 1.

The fuel filler flap is unlocked.

•► Open the fuel filler flap.

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.

DEF

Important notes on use

To function properly, BlueTEC exhaust gas aftertreatment must be operated with the reducing agent DEF. Adding DEF is one of the tasks performed during maintenance. Under normal operating conditions, a tank of DEF lasts until the next service due date.

When the DEF supply has almost run out, the Check Additive See Operator's Manual message is shown in the multifunction display.

When the DEF supply sinks to a minimum level, the Remaining Starts: 16 message is shown in the multifunction display.

When the Remaining Starts: 16 message is shown in the multifunction display, you can start the engine 16 more times. If DEF is not added, it is then not possible to start the engine again. Fill the DEF tank with about 1 gal (3.8 l) DEF or have the DEF tank refilled at a qualified specialist workshop.

Use the special DEF refill bottle when filling between maintenance intervals. Contact an authorized Mercedes-Benz Center with any questions or, if necessary, contact Roadside Assistance.

Further information about BlueTEC exhaust gas aftertreatment and DEF is available at any authorized Mercedes-Benz Center.

Adding DEF

WARNING
Make sure  - DEF does not come into contact with skin, eyes, or clothing  - to keep DEF out of the reach of children If you and/or others have come into contact with DEF:

 - If DEF has gotten into contact with eyes, flush with plenty of water immediately and seek medical help.

 - Clean affected skin immediately with plenty of water.

 - If DEF was swallowed, rinse mouth immediately with plenty of water and drink plenty of water. Consult a physician.

WARNING
If you open the DEF tank cap at high temperatures, ammonia vapors can be released.

Ammonia vapors have a pungent odor and are particularly irritating to:

 - skin
 - mucous membranes
 - eyes

You may experience a burning sensation in your eyes, nose and throat, as well as coughing and watering of the eyes.

Do not inhale any ammonia vapors that may be released. Only refill the DEF tank in well ventilated areas.

Only use DEF that complies with ISO 22241. Do not add any special additives to DEF and do not thin DEF with water. This could destroy the BlueTEC exhaust gas aftertreatment.

If the outside temperature is lower than -11 °C, damage may occur when topping up.

If DEF is frozen and there is an active warning indicator, topping up may not be possible.

Park the vehicle in a warmer place, e.g. in a garage, until DEF has become fluid again.

Filling is then possible again. Alternatively, have the DEF tank refilled at a qualified specialist workshop.

Rinse surfaces that have come into contact with DEF immediately with water or remove DEF using a damp cloth and cold water. If the DEF has already crystallized, use a sponge and cold water to clean it. DEF residues crystallize after time and contaminate the affected surfaces.

DEF is not a fuel additive and must not be added to the fuel tank. If DEF is added to the fuel tank, this can lead to engine damage.

If you are adding between maintenance intervals, add approximately 1 gallon (3.8 l) of DEF to the DEF tank. One gallon (3.8 l) of DEF is approximately 2 DEF refill bottles.

Then, have the DEF supply checked and filled completely if necessary. For this purpose, Mercedes-Benz recommends a qualified specialist workshop.

Further information on DEF.

The DEF filler neck is under the trunk floor.

•► Switch off the ignition.
•► Open the trunk.
•► Lift up the trunk floor

•► Turn DEF cap 1 counter-clockwise and remove it.

•► Turn DEF filler cap 2 counter-clockwise and open it.

Filler cap 2 is secured with a plastic strap.

•► Unscrew the covering cap from DEF refill bottle 3.

•► Place DEF refill bottle 3 on the filler neck as shown and screw on clockwise handtight.

Only screw on the DEF refill bottle handtight.

It could otherwise be damaged.

•► Press DEF refill bottle 3 down.

The DEF tank is filled. This may take up to one minute.

If the DEF refill bottle is no longer pressed down, the filling process stops and the partially emptied bottle can be removed.

•► Release DEF refill bottle 3.
•► Turn DEF refill bottle 3 counter-clockwise and remove it.
•► Place DEF filler cap 2 on the filler neck and turn it clockwise.

•► Insert DEF cap 1 as shown and turn it clockwise as far as it will go.
•► Fold the trunk floor down.
•► Close the trunk lid.
•► Drive at a speed above 10 mph (16 km/h).

The Check Additive See Operator's Manual message goes out after approximately one minute.

If the Check Additive See Operator's Manual message remains shown in the multifunction display, add an additional bottle of DEF.

Then, have the DEF supply checked at a qualified specialist workshop and completely refilled if necessary.

Automatic transmissionParking