Get Driving and parking -> Refuelling Guide for Mercedes B Class SUV Third Generation (2018-2026)

to European EN 228, or an equivalent

specication.

Petrol can contain up to 25 %‑ of ethanol by

volume.

See the information label in the fuel ller

ap for compatible fuels.

Further information about compatible fuels

can be obtained at a qualied specialist work-

shop.

Throughout Europe, you can nd compatibility

markings on fuel pumps or pump nozzles suit-

able for your vehicle.

Never refuel with one of the following fuels:

Diesel

regular petrol with an octane number

lower than 91 RON

petrol with more than 3 % methanol by

volume‑, e. g. M15, M30

petrol with metallic additives

If you have accidentally refuelled with the

wrong fuel:

Do not switch on the vehicle.

Consult a qualied specialist workshop.

NOTE Damage caused by the wrong fuel

Vehicles with a diesel engine:

Even small amounts of the wrong fuel could

result in damage to the fuel system, the

engine and the emission control system.

Only refuel with sulphur-free diesel fuel.

In countries without sulphur-free diesel

fuel, only refuel with low-sulphur diesel

fuel with a sulphur content below 50

ppm.

Never refuel with one of the following fuels:

Petrol

Marine diesel

Heating oil

Pure biodiesel or vegetable oil

Petroleum or kerosene

If you have accidentally refuelled with the

wrong fuel:

Do not switch on the vehicle.

Consult a qualied specialist workshop.

NOTE Do not use diesel to refuel vehicles

with a petrol engine

If you have accidentally refuelled with the

wrong fuel:

Do not switch on the vehicle. Otherwise

fuel can enter the engine.

Even small amounts of the wrong fuel

could result in damage to the fuel system

and the engine. The repair costs are high.

Consult a qualied specialist workshop.

Have the fuel tank and fuel lines drained

completely.

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275

F247 0072 02

NOTE Do not refuel diesel-engined vehi-

cles with petrol

If you have accidentally refuelled with the

wrong fuel:

Do not switch on the vehicle. Otherwise

fuel can enter the engine.

Even small amounts of the wrong fuel

could result in damage to the fuel system

and the engine. The repair costs are high.

Consult a qualied specialist workshop.

Have the fuel tank and fuel lines drained

completely.

NOTE Damage to the fuel system due to

overlling the fuel tank

Only ll the fuel tank until the pump noz-

zle switches o.

If too much fuel has been added due, for

example, to a faulty lling pump:

Do not switch on the vehicle.

Consult a qualied specialist workshop.

NOTE Fuel may spray out when you

remove the fuel pump nozzle

Only ll the fuel tank until the pump noz-

zle switches o.

Requirements

The vehicle is unlocked.

Plug-in hybrid with petrol engine: the fuel tank

was bled before refuelling (/ page 277).

Observe the notes on service uids and fuel.

The recommended octane number for your vehi-

cle can be found on the information label in the

fuel ller ap.

Fuel ller ap

Bracket for fuel cap

Tyre pressure table

Fuel type

QR code for rescue card

Plug-in hybrid with petrol engine: the fuel ller

ap opens automatically aer bleeding the

tank (/ page 277).

276

Driving and parking

F247 0072 02

Press on the back area of the fuel ller ap

Turn the fuel ller cap anti-clockwise and

remove it.

Insert fuel ller cap into bracket2 from

above.

Completely insert the pump nozzle into the

tank ller neck, hook in place and refuel.

Only ll the fuel tank until the pump nozzle

switches o.

Vehicles with a diesel engine: the tank ller

neck is designed for refuelling at diesel lling

pumps.

Vehicles with a diesel engine: do not run the

tank dry.

If the fuel tank is completely empty, top up

with at least 5 litres of diesel.

Vehicles with a diesel engine: use a ller neck

with a large diameter for vehicles with a diesel

engine when topping up fuel from a fuel can.

Otherwise, the ller neck cannot slide into the

tank.

Replace the cap on the ller neck and turn

clockwise until it engages audibly.

Close fuel ller ap 1.

Depressurising the fuel tank (plug-in hybrid with

petrol engine)

Pull switch 1 once briey.

Indicator lamp

2 will ash and the Please

wait Depressurising fuel tank

message will

appear on the driver's display.

When the fuel tank is depressurised, indicator

lamp

2 will light up continuously.

The Fuel tank is depressurised Ready for

refuelling

message will appear on the driver's

display and the fuel ller ap will open auto-

matically.

Depressurising the fuel tank may take several

minutes.

The fuel tank can be depressurised only if the

conditions described above are fullled. Other-

wise, drive the vehicle at least 0.5 km and repeat

the process.

In the following situations, there is a malfunc-

tion:

Indicator lamp

2 ashes initially and then

goes out.

The yellow engine diagnostics warning

lamp ; lights up.

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277

F247 0072 02

NOTE Damage to the fuel ller ap when

opening it

If an attempt is made to open a fuel ller ap

that is not unlocked, the fuel ller ap or the

opening mechanism may be damaged.

Only refuel when the fuel ller ap has

opened automatically.

You can watch an animation on this topic via the

following link:

AdBlue

(vehicles with a diesel engine only)

▌Notes on topping up AdBlue

AdBlue

is a water-soluble uid for the NOx

exhaust gas aertreatment of diesel engines. In

order for the exhaust gas aertreatment to func-

tion properly, only use AdBlue

in accordance

with ISO 22241.

AdBlue

is characterised by the following:

non-toxic

colourless and odourless

non-ammable

If you open the AdBlue

tank, small amounts of

ammonia vapour may be released. Only ll the

AdBlue

tank in well-ventilated areas.

Do not let AdBlue

come into contact with skin,

eyes or clothes. Keep AdBlue

away from chil-

dren.

Do not ingest AdBlue

. If AdBlue

is swallowed,

immediately rinse your mouth out thoroughly.

Drink plenty of water. Seek medical attention at

once.

Observe the notes on operating uids

(/ page 725).

AdBlue

is available here:

AdBlue

can be topped up by fast service at a

qualied specialist workshop, e.g. a

Mercedes-Benz Service Centre.

AdBlue

is available at many lling stations

from AdBlue

lling pumps.

Alternatively, AdBlue

is available at qualied

specialist workshops, e.g. Mercedes-Benz

Service Centres, and at many lling stations in

AdBlue

rell canisters or AdBlue

rell bot-

tles.

Ensure the connection between the rell con-

tainer and vehicle ller neck does not drip.

▌Relling AdBlue

NOTE Engine damage due to AdBlue

being in the fuel

AdBlue

must not be used to ll the fuel

tank.

Only use AdBlue

to ll the AdBlue

tank.

Do not overll the AdBlue

tank.

NOTE Contamination of the vehicle inte-

rior due to AdBlue

leakage

Aer topping up, carefully close the

AdBlue

rell container.

Avoid carrying AdBlue

rell containers

permanently in the vehicle.

278

Driving and parking

F247 0072 02

Requirements

The vehicle is unlocked.

The following messages appear in order in the

driver display when the AdBlue

tank requires

relling:

Refill AdBlue See Owner’s Manual. The

AdBlue

level has fallen below the reserve

range. Add at least 5 l of AdBlue

Top up AdBlue Emergency op. in XXX km

See Owner's Manual

. The low AdBlue

level

will lead to limited performance aer the

remaining distance displayed has been driven.

Add at least 5 l of AdBlue

Top up AdBlue XX,X l Emerg. op.: max. XXX

km/h Start not poss. in XXX km

. The low

AdBlue

level will lead to limited performance

from the speed displayed. Aer the remaining

distance displayed has been covered, it will no

longer be possible to start the vehicle. Top up

at least the displayed quantity of AdBlue

Top up XX,X l AdBlue Switch vehicle on, wait

60 sec. or engine start not possThe AdBlue

tank is empty. You can no longer start the

vehicle. Top up at least the displayed quantity

of AdBlue

. Switch on the vehicle and wait

approx. 60 seconds. Start the vehicle.

You can see the AdBlue

range and level in the

driver display

Service.

The AdBlue

range shown depends strongly

on the driving style and operating conditions.

The actual range can therefore deviate from

the calculated range.

Opening the AdBlue

ller cap

Press on the centre of the back area of fuel

ller ap 1.

Turn AdBlue

ller cap 2 anti-clockwise and

remove it.

You can also place the AdBlue

ller cap in

the ller cap holder in the hinge arm of the

fuel ller ap.

Driving and parking

279

F247 0072 02

Driving and parking -> Refuelling for Your Mercedes B Class SUV Third Generation (2018-2026)

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