2021 MERCEDES-BENZ B-CLASS HATCHBACK oil

R
You open the driver's door when theve hicle is
at a standstill or when driving at a very low
speed and the transmission position is 005Bor
005E.
% Tomanoeuv rewith an open driver's door,
open the driver's door while at a standstill and
engage transmission position 005Bor005E again.
% Atvery low outside temp eratures below
appr ox. -20°C, you may not be able toshiT
th e transmission from 005Dtoano ther trans-
mission position when theve hicle is switched
o.. If this is the case, only change the trans-
mission position while theve hicle switched
on.
Eng
Eng aging dr
aging dr iv
ive position D
e position D #
Depress the brake pedal and push the DIRECT
SELECT le ver down past the /r stpoint of
re sis tance.
When the automatic transmission is in transmis-
sion position 005B, it shiTsthege ars automaticall y.
This depends, among other things, on thefo llo w-
ing factors:
R The selected drive prog ram R
The position of the accelerator pedal
R The driving speed Pr
Pr
oblems wit
oblems wit h t
h the tr
he tr ansmission
ansmission The tr
The tr
ansmission has a f
ansmission has a f aulty g
aulty gear
earshiT
shiT
Po ssible cause:
R the transmission is losing oil. #
Have the transmission checked at a quali/ed
specialist workshop immediatel y.
The acceler
The acceler ation c
ation char
har act
acter
eris
istics ge
tics get wt w or
orse, and
se, and
t
t he tr
he tr ansmission no long
ansmission no long er
ershiTs.
shiTs.
Po ssible cause:
R the transmission is in emer gency ope ration
mode. #
Stop theve hicle in accordance with the tra1c
conditions. #
ShiT the transmission toposition 005D. #
Switch o. theve hicle. #
Wait at least ten seconds. #
Start theve hicle again. #
ShiT the transmission toposition 005B. #
Have the transmission checked at a quali/ed
specialist workshop immediatel y. Manual
Manual
g
gear
ear shiTing
shiTing %
For plug-in hybrids, obser vethe information
re ga rding there ge nerative brake system
(/ page 178). When
the automatic transmission is shiTed to
position 005B,you can manually shiT it with the
stee ring wheel gearshiT paddle. If permitted, the
automatic transmission shiTs toa higher or lo wer Driving and parking
189
189

R
Regular petrol with an octane number
lo we rth an 91 RON
R Petrol with more than 10% ethanol byvol-
ume, e.g. E15, E20, E85, E100
R Petrol with more than 3% me thanol byvol-
ume, e.g. M15, M30
R Petrol with additives containing me tal
If yo u ha veacciden tally refuelled wi th the
wrong fuel: #
Do not switch on theve hicle. #
Consult a quali/ed specialist workshop. *
N
NO OTE
TE Damage caused bythe wrong fuel Ve
hicles with a diesel engine:
Even small amounts of the wrong fuel could
re sult in damage tothe fuel system, the
engine and the emission control system. #
Only refuel using sulphur-free diesel fuel
th at conforms toEuropean standard
EN 590, or an equivalent speci/cation.
In count ries without sulphur-free diesel
fuel, refuel using only lo w-sulphur diesel fuel with a sulphur content less
than
50 ppm.
Ne verre fuel wi thone of thefo llowing fuels:
R Petrol
R Marine diesel
R Heating oil
R Pure bio-diesel or vege table oil
R Para1n or kerosene
If yo u ha veacciden tally refuelled wi th the
wrong fuel: #
Do not switch on theve hicle. #
Consult a quali/ed specialist workshop. *
N
NOOTE
TE Do not use diesel torefuel vehicles
with a petrol engine If
yo u ha veacciden tally refuelled wi th the
wrong fuel:
R Do not switch on theve hicle. Otherwise
fuel can enter the engine. Even small amounts of
the wrong fuel
could result in damage tothe fuel system
and the engine. The repair costs are high. #
Consult a quali/ed specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. *
N NO OTE
TE Do not use petrol torefuel vehicles
with a diesel engine If
yo u ha veacciden tally refuelled wi th the
wrong fuel:
R Do not switch on theve hicle. Otherwise,
fuel can enter the fuel system.
Even small amounts of the wrong fuel
could result in damage tothe fuel system
and the engine. The repair costs are high. #
Consult a quali/ed specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. Driving and parking
193 193

not be co
vered and the de tection ranges around
th em must be kept free. Do not at tach additional
licence plate brac kets, advertisements, stic kers,
fo ils or foils toprotect against stone chippings in
th e de tection range of the sensors and cameras.
Make sure that there are no overhanging loads
pr otru ding into the de tection range.
If th ere is damage toa bumper or thera diator
gr ille, or aTer an impact, ha vethe function of the
senso rschecked at a quali/ed specialist work-
shop. Ha vedamage or stone chipping in the area
of the cameras on the front and rear wind ows
re paired at a quali/ed specialist workshop. Ov
Ov
er
ervie
vie w of dr
w of dr iving syst
iving syst ems and dr
ems and dr iving safe
iving safety
ty
syst
syst ems
ems R
ABS (A Anti-lock B Braking S System) (/ page 225)
R BAS (BBra ke AAssist S System) (/ page 225)
R ESP ®
(EElectronic S Stability P Program)
(/ page 225)
R ESP ®
Crosswind Assist (/ page 226)
R ESP ®
trailer stabilisation (/ page 227)R
EBD (E Electronic B Brakeforc e DDistribution)
(/ page 227)
R STEER CONTROL (/ page 227)
R HOLD function (/ page 228)
R Hill Start Assist (/ page 229)
R Adaptive Brake Lights (/ page 229)
R Start-o. assist (/ page 230)
R ATTENTION ASSIST (/ page 230)
R Cruise cont rol (/ page 232)
R Limiter (/ page 232)
R Tra1c Sign Assist (/ page 250)
R Speed Limit Assist (countr y-dependent)
(/ page 249)
R Suspension with adaptive damping adjustment
(/ page 257)
Dr
Dr iving Assist iving Assist ance pack
ance package
age
The following functions are part of the Driving
Assistance Package. Cer tain functions are only
av ailable in some countries. Some functions are
also available without the Driving Assistance
Pa ckage, albeit with restric ted functionality. R
Active Distance Assist DISTRONIC
(/ page 235)
R Active Speed Limit Assist (countr y-dependent)
(/ page 239)
R Route-based speed adap tation (countr y-
dependent) (/ page 240)
R Active Brake Assist (/ page 244)
R Active Steering Assist (countr y-dependent)
(/ page 241)
R Active Emer gency Stop Assist (countr y-
dependent) (/ page 243)
R Blind Spot Assist and Active Blind Spot Assist
with exitwa rning (/ page 252)
R Active Lane Keeping Assist (/ page 255)
P
P ar
ar king P
king P ack
ackage
age
R Reversing camera (/ page 258)
R 360° Camera (/ page 260)
R Parking Assist PARKTRONIC (/ page 264)
R Active Parking Assist (/ page 268)224
224
Driving and parking

R
Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is oTen leT idling for long
periods
R Operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air /lter, air /lter, engine oil and oil /lter,
fo rex ample, changed more frequentl y.The tyres
must be checked more frequently if theve hicle is
operated under increased loads. Further informa-
tion can be obtained at a quali/ed specialist work-
shop. Batt Batt
er
ery disconnection per
y disconnection per iods
iodsThe AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date
on the inst rument display before disconnect-
ing the battery (/ page 336). Engine com
Engine com
par
partment
tment A
A
ctiv
ctiv e bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otection)
ection) Oper
Oper
ation of t
ation of t he activ
he active bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otec-
ec-
tion)
tion)
In cer tain accident situations, the actuation of the
active bonnet reduces therisk of injury topedes-
trians. The rear area of the bonnet is raised by
appr oximately 70 mm.
Fo rth e drive tothewo rkshop, reset the actuated
active bonnet yourself (/ page 337).
ATer the active bonnet has been actuated, pedes-
trian pr otection may be limited.
Ha ve the full functionality of the active bonnet
re stored in a quali/ed specialist workshop.
R
R ese ese tting t
tting t he activ
he activ e bonnet
e bonnet &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. #
With your hand 0at, push down active bonnet
1 inthe area around the hinges on bo th
sides (ar rows ).
In doing so, the actuator is depressurised and
yo u may hear a hissing sound.
The engine bonnet must engage in position. #
Ifth e active bonnet can be raised slightly at
th ere ar in the area of the hinges, repeat the
step until it engages co rrectl y. Maintenance and ca
re
337
337

Opening and closing t
Opening and closing t
he bonnet
he bonnet&
W
WARNING
ARNING Risk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and inju ry
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonnet's range of mo vement. #
Do not open or close the bonnet if there
is a person in the bonnet's range of
mo vement. &
W WARNING
ARNING Risk of burns when opening the
bonnet
If yo u open the bonnet in theev ent of an over-
heated engine or /re in the engine compart-
ment, thefo llowing situations may occur:
R You may come into contact with hot gases.
R You may come into contact with other
escaping hot operating 0uids. #
Before opening the bonnet, allow the
engine tocool down. #
Intheev ent of a /re in the engine com-
partment, keep the bonnet closed and
call the /re service. &
W
WARNING
ARNING Risk of injury due tomoving
parts
Components in the engine compartment may
continue torun or start unexpectedly even
when the drive system is switched o..
Obser vethefo llowing if you must open the
bonnet: #
Switch o. theve hicle. #
Neverto uch the danger zones sur round-
ing moving components, e.g. thero tation
area of thefa n. #
Remo vejewe llery and watches. #
Keep items of clo thing and hair away
from moving pa rts. &
W
WARNING
ARNING Risk of injury from touching
components under voltage
The ignition system and the fuel injection sys-
te m operate at high voltage. You could receive
an elect ric shoc k. #
Neverto uch ignition system or fuel injec-
tion system components when theve hi-
cle is switched on. The live components include
thefo llowing, for
ex ample:
R Ignition coils
R Fuel injectors 338
338
Maintenance and care

R
Electric lines tothe ignition coils and the fuel
injectors &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. &
W
W ARNING
ARNING Risk of injury from using the
windscreen wipers when the bonnet is
open
If th e windscreen wipers start moving when
th e bonnet is open, you could be trapped by
th e wiper linkage. #
Always switch o. the windscreen wipers
and theve hicle /r stifyo u need toopen
th e bonnet. Opening t
Opening t
he bonnet
he bonnet #
Torelease the bonnet, pull on handle 1. #
Push yellow handle 1onthe bonnet catch to
th e leT as far as it will go (palm down wards).
LiT the bonnet until it is automatically raised
by the pneumatic spring.
Closing t
Closing t he bonnet
he bonnet #
Lowe rth e bonnet and let it drop from a height
of appr oximately 20 cm. Maintenance and care
339
339

#
Ifth e bonnet can still be liTed slightl y,open
th e bonnet again and close it with a little force
until it engages cor rectl y. Engine oil
Engine oil
Chec
Chec
king t
king t he engine oil lev
he engine oil lev el using t
el using the on-board
he on-board
com
com put
puter
er
R
R eq
eq uir
uir ements:
ements:
R The engine has been warmed up.
R The vehicle is par ked on a le vel sur face.
R The engine is running at idle speed.
R The bonnet is closed.
The engine oil le vel is de term ined during driving.
De term ining the engine oil le vel can take up to
30 minutes with a normal driving style and even
longer with an active driving style. On-board computer:
4 Service 5
Engine oil level
One of thefo llowing message s will appear onthe
inst rument displa y:
R Engine oil level Measuring now: measu rement
of the oil le vel is not yet possible. #
Repeat there qu est aTer a maximum of
30 minutes' driving.
R Engine oil level OK andthe bar display for
indicating the oil le vel on the inst rument dis-
play is green and is between "min" and "max":
th e oil le vel is cor rect.
R Engine oil level Add 1,0 l andthe bar display
fo r indicating the oil le vel on the inst rument
display is orange and is below "min": #
Add 1 l of engine oil.
R Reduce engine oil level andthe bar display for
indicating the oil le vel on the inst rument dis-
play is orange and is abo ve"max": #
Drain o. any excess engine oil that has been
added. Todo so, consult a quali/ed specialist
wo rkshop.
R For engine oil level turn on ignition #
Switch on theve hicle tocheck the engine oil
le ve l.
R Engine oil level System inoperative: The oil
leve l sensor is defective or not connected. #
Consult a quali/ed specialist workshop.
R Engine oil level System currently unavail. #
Close the bonnet.
T T opping up engine oil
opping up engine oil &
W
WARNING
ARNING Risk of burns from hot compo-
nent parts in the engine compartment
Cer tain component parts in the engine com-
partment can be very hot, e.g. the engine, the
cooler and parts of theex haust system. #
Allow the engine tocool down and only
to uch component parts described in the
fo llowing. 340
340
Maintenance and care

&
W
W ARNI NG
ARNI NGRisk of /re and injury from
engine oil
If engine oil comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Make sure that no engine oil is spilled
next tothe /ller opening. #
Allow the engine tocool o. and thor-
oughly clean the engine oil from compo-
nent parts before starting theve hicle. *
N
NO OTE
TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters which
do not cor respond tothe speci/cations
ex plicitly prescribed forth e service inter-
va ls. #
Follow the inst ructions on the service
inter val display forch anging the engine
oil and obser vethe prescribed change
inter vals. #
Do not use additives. *
N
NOOTE
TE Damage caused bytopping up too
much engine oil To
o much engine oil can damage the engine or
th e catalytic con verter. #
Have excess engine oil remo ved at a
qu ali/ed specialist workshop. %
Depending on driving st yle, theve hicle con-
sumes up to0.8 litre of oil per 1000 km. The
oil consum ption may be higher than this when
th eve hicle is new or if you frequently drive at
high engine speeds. #
Turn cap 1anti-clockwise and remo veit. #
Top up the engine oil. #
Replace cap 1and turn it clockwise until it
engages. #
Check the oil le vel again (/ page 340). Maintenance and care
341
341