Refuelling
Refuelling
 | Risk of explosion |
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Fuel is highly flammable. Fire, naked flames and smoking are therefore prohibited when handling fuels.
Switch off the engine and the auxiliary heating* before refuelling.
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| Risk of injury |
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Avoid any contact with fuels.
You can damage your health if your skin comes into direct contact with fuel or if you inhale fuel vapours.
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| Risk of fire |
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Do not use petrol to refuel vehicles with a diesel engine. Never mix diesel with petrol. This would damage the fuel system and engine and could result in a vehicle fire.
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Do not use petrol to refuel vehicles with a diesel engine. Do not use diesel to refuel vehicles with a petrol engine. Even a small quantity of the wrong fuel will damage the injection system. Damage resulting from adding the wrong fuel is not covered by the warranty.
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Do not start the engine if you accidentally refuel with the wrong fuel. Otherwise, you risk engine damage. Consult a specialised qualified workshop and have the fuel system emptied completely.
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When you open or close the vehicle with the key or KEYLESS GO*, the fuel filler flap is automatically unlocked or locked.
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 | To open the fuel filler flap |
 | To insert the fuel cap |
 | Tyre pressure table |
 | Fuel type |
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To open: press the fuel filler flap in the direction of arrow .
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The fuel filler flap opens slightly.
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Open the fuel filler flap.
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Turn the fuel filler cap to the left and remove it.
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Insert the fuel filler cap into the holder bracket on the inside of filler flap .
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Only fill the tank until the pump nozzle switches off.
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Overfilling the tank could damage the fuel system.
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To close: replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages.
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Close the fuel filler flap.
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Vehicles with a diesel engine:
If you have run the tank completely dry, it will be necessary to bleed the fuel system more.
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Petrol (EN 228)
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Refuel using only unleaded premium grade petrol with a minimum octane number of 95 RON/85 MON conforming to European standard EN 228.
You could otherwise impair engine output or damage the engine.
You will find further information about petrol under "Fuel" in the index.
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As a temporary measure, but only when the recommended fuel is not available, you may also use regular unleaded petrol, 91 RON/82.5 MON. This may reduce performance and increase petrol consumption. Avoid driving at full throttle.
In some countries, the available petrol quality may not be sufficient and could cause coking around the inlet valve. In such cases, and in consultation with a Mercedes-Benz Service Centre, the petrol may be mixed with the additive recommended by Mercedes-Benz (part no. A000989254510). You must observe the notes and mixing ratios given on the container.
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CLS 350 CGI
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Refuel using only unleaded premium grade petrol with a minimum octane number of 95 RON/85 MON conforming to European standard EN 228.
You could otherwise impair engine output or damage the engine.
You will find further information about petrol under "Technical data" in the index.
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In some countries, only petrol of insufficient quality (high-sulphur fuel) may be available. This fuel can temporarily produce unpleasant odours, especially on short journeys. Refuelling with petrol of sufficient quality (sulphur-free fuel) will reduce such odours.
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AMG vehicles
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Refuel using only super unleaded petrol with a minimum octane number of 98 RON/88 MON conforming to European standard EN 228.
You could otherwise impair engine output or damage the engine.
You will find further information about petrol under "Technical data" in the index.
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If the recommended fuel is not available and only as a temporary measure, you may also use premium unleaded petrol, 95 RON/85 MON. This may reduce performance and increase petrol consumption. You must avoid driving at full throttle.
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In emergencies, only when the recommended fuel is not available, you may also use standard unleaded petrol, 91 RON/82.5 MON. However, using this fuel results in considerably higher petrol consumption and significantly reduced performance. Avoid driving at full throttle, and only drive in drive program C.
If no fuel other than regular petrol fuel 91 RON/82.5 MON or a lower grade is permanently available, you should have the vehicle adapted to run on this fuel by the local after-sales service.
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Diesel (EN 590)
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Only use diesel that complies with the EN 590 European standard.
You could otherwise impair engine output or damage the engine.
You will find further information about diesel under "Fuel" in the index.
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When refuelling vehicles with a diesel particle filter in countries outside the EU, only low-sulphur Euro diesel with less than 0.005 percent sulphur content by weight should be used. In countries in which diesel with a higher sulphur content is available (e.g. 0.035 percent by weight), the engine oil should be renewed at more frequent intervals. More information about intervals for changing the engine oil can be obtained from any Mercedes-Benz Service Centre.
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Using fuel that does not comply with EN 590 can increase wear and damage the engine and the exhaust system. Do not use the following:
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Marine diesel
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Heating oil
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Bio-diesel
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Vegetable oil
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Petrol
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Petroleum
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Kerosene
Do not add such fuels to diesel fuel and do not use any special additives (exception: flow improvers - see "Low outside temperatures").
Damage caused by the use of unapproved fuels or additives is not covered by the warranty.
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Low outside temperatures
The flow properties of diesel may be insufficient at low ambient temperatures.
To prevent operating problems, diesel fuel with improved cold flow qualities is available during the winter months. Your vehicle must be refuelled with this winter diesel at temperatures of -5 °C or below.
You can use this winter diesel at temperatures down to about -20 °C without problems.
If only summer diesel fuel or less cold-resistant winter diesel fuel (e.g. in Mediterranean regions) is available, you should add an amount of flow improver to the fuel corresponding to the outside temperature.
Mix the additive with the diesel in good time, before the flow properties of the diesel become insufficient. Otherwise, malfunctions can only be rectified by heating the entire fuel system, e.g. by parking the vehicle in a heated garage.
| Risk of fire |
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Do not use petrol to refuel vehicles with a diesel engine. Never mix diesel with petrol. This would damage the fuel system and engine and could result in a vehicle fire.
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Flow improver
The effectiveness of a flow improver is not guaranteed with every fuel. Observe the information provided by the manufacturer when using a flow improver. Only use flow improvers that have been tested and approved by Mercedes-Benz. Information about flow improvers that have been tested and approved by Mercedes-Benz can be obtained from any Mercedes-Benz Service Centre.
