2021 MERCEDES-BENZ V-CLASS MPV engine

Note
s on maintenance
+ ENVIRONMENTA
LNO TEEnvironmen‐
ta lly pollution from disposal not in an
environmentally responsible manner If,
for operating reasons, individual main te‐
nance workis car ried out under your own
direction, the environmen tal pr otection
re qu irements must be obser ved. When dis‐
posing of operating fluids, e.g. engine oil, the
legal requ irements must be obser ved. This
also af fects all pa rts th at ha vecome into con‐
ta ct with operating fluids, e.g. filters. #
Dispose of em pty containers, cleaning
clo ths and care products in an environ‐
mentally responsible manner. #
Follow the instructions for use of care
products. #
Do not allow th e enginetorun longer
th an necessary when stationar y. When
working on theve hicle, comply with all
saf etyre gulations, such as the operating instruc‐
tions, regulations concerning hazardous materi‐
als, environmental pr otection measures, work
saf ety and accident pr evention regulations.
Yo u must secure theve hicle on jack stands of
suf ficient load capacity if workis being car ried
out underneath theve hicle.
Please also referto the no tes about qualified spe‐
cialist workshops (/ page 22).
The scope and regularity of the inspection and
maintenance workprimarily depend on the of ten
diverse operating conditions.
Yo u can obtain fur ther information concerning
th e servicing of your vehicle from a qualified spe‐
cialist workshop, e.g. a Mercedes-Benz Service
Centre.
Yo u will find information about ope rating fluids
appr oved for Mercedes-Benz and capacities
under "Opera ting Fluids and Capacities"
(/ page 269).
Obser vethe information under "Mercedes-Benz
GenuineParts" (/ page16). Se
rvice inter val display Service inter
val display function The ASSY
STPLUS service inter val display on the
instrument clus ter display pr ovides information on
there maining time or dis tance be fore the next
service due date.
Under arduous operating conditions or if theve hi‐
cle is subjected toinc reased loads, the ASS YST
PLUS service inter val display may shor tenthe
service inter val.
Yo u can obtain fur ther information concerning
th e servicing of your vehicle from a qualified spe‐
cialist workshop. Displaying
the service due da te Re
quirements
R The ignition is switched on.
On-board computer: 4 Service 5
ASSYST PLUS
The next service due date is displa yed. #
Toexitth e displa y:press the0076 or0038
st eering-wheel button. Information on
regular maintenance work *
NO
TEPremature wearthro ugh failure to
obser veservice due dates Maintenance
workwhich is not car ried out at
th eright time or incomple tely can lead to
inc reased wear and damage totheve hicle. #
Adhere tothe prescribed service inter‐
va ls. #
Always ha vethe prescribed mainte‐
nance workcar ried out at a qualified
specialist workshop. Note
s on special service requ irements The prescribed service inter
val is based on nor‐
mal vehicle use. Maintenance workwill need to
be per form ed more of tenth an presc ribed if the
ve hicle is operated under arduous operating con‐
ditions or increased loads.
Arduous operating conditions include:
R regular city driving with frequent intermediate
st ops
R frequent short-dis tance driving
R frequent ope ration in mountainous terrain or
on poor road sur faces 220
Maintenance and care

R
when the engine is of ten le ftidling for long
periods
R operation in particula rly dusty conditions
and/or if air-reci rculation mode is frequent ly
used
In these or similar operating conditions, ha vethe
air filter, engine oil and oil filter, forex ample,
re placed more frequentl y.
If th eve hicle is subjected toinc reased loads, the
tyres mu stbe checked more frequentl y.Yo u can
obtain fur ther information at a qualified specialist
wo rkshop. No
n-operational times with the bat tery dis‐
connected The ASS
YST PLUS service inter val display can
calculate the service due date only when the bat‐
te ry is connecte d. #
Display and no tedown the service due date
on the instrument clus ter before disconnect‐
ing the battery (/ page 220). Engine compartment
Opening and closing
the bonnet &
WARNING Risk of accident due todriving
with the bonn etunlo cked
The bonn etmay open and block your vie w. #
Neverre lease the bonn etwhen driving. #
Before every trip, ensure that the engine
bonn etis loc ked. &
WARNING Risk of accident and inju ry
when opening and closing the bonn et
The bonnet may suddenly drop into the end
position.
There is a risk of injury for an yone in the
engine bonn et's range of mo vement. #
Do not open or close the bonn etifth ere
is a person in the bonn et's range of
mo vement. &
WARNING Risk of injury fromtouching
components under voltage
The ignition sy stem and the fuel injection sys‐
te m wo rkunder high voltage. You could
re ceive an electric shoc k. #
Neverto uch components of the ignition
sy stem or the fuel injection sy stem
when the ignition is switched on. The
following are examples of live components:
R ignition coils
R spark plug connec tors
R injectors &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. *
NO
TEDama getobonn etor windscreen
wipers when opening the bonn et If
th e windscreen wipers ha vebeen folded
back from the windscreen when the bonn etis
opened, the windscreen wipers or the bonn et
may be dama ged. #
Ensure that the windscreen wipers ha ve
not been folded back from the wind‐
screen. Opening
the bonnet #
Pull handle 1torelease the bonn et. Maintenance and care
221

#
Reach into thega p, push le ver2 ofthe bon‐
net catch tothe left and lift the bonn et.
When the bonn ethas opened around 40 cm,
it will be automatically opened and held by
th ega s pressure spring dampers.
Closing the bonnet &
WARNING Risk offire due toflammable
materials in the engine compartment or
on theex haust sy stem
Flammable materials may ignite. #
Ensure that there are no flammable
ex tern al materials in the engine com‐
partment or on theex haust sy stem
af te r maintenance workhas been car‐
ri ed out. *
NO
TEDama getothe bonn etdue to
pressing it closed manually Pushing
the bonn etclosed wi thyour hands
could damage it. #
Toclose the bonn et, let it drop from the
specified height. #
Lowe rth e bonn etand let it fall from a height
of appr oximately 30 cm, applying a little force
as you let it go. #
Ifth e bonn etremains slightly open, open it
again and let it fall, applying slightly more
fo rc e as you let it go, until it engages. Engine oil
Checking engine oil le
vel with on-board com‐
puter (engine without oil dipst ick)
Re quirements:
R The engine oil le vel is de term ined during driv‐
ing.
R The engine is at normal operating temp era‐
ture.
R The vehicle is le vel during the measuring
process.
R The bonn etis not open.
Depending on the driving profile, the oil le vel can
be displa yed only af ter a driving time of up to
30 minutes and only when the ignition is
switched on.
On-board computer:
4 Service 5
Engine oil level
One of thefo llowing messa ges appears on
th e display of the on-boa rdcompu ter:
Engine oil level Measurement in progress... #
Measurement of the oil le vel not yet possible.
Re peat thequ ery af ter driving for a maximum
of 30 minutes.
Engine oil level OK
The bar for displaying the oil le vel on the display
is green and is between "min" and "max". #
Do not top up oil. The engine oil le vel is cor‐
re ct.
Engine oil level Warm up engine #
Warm upthe engine tooperating temp era‐
ture.
Engine oil level Correct measurement only if vehi-
cle is on level ground #
Park theve hicle on a le vel sur face.
Engine oil level Add 1,0 l
The bar for displaying the oil le vel on the display
is orange and is below "min".
The oil le vel is too lo w. #
Add 1 l of engine oil (/ page 224).
Engine oil level Reduce oil level
The bar for displaying the oil le vel on the display
is orange and is abo ve"max".
The oil le vel is too high. 222
Maintenance and care

#
Siphon off any excess engine oil that has
been added. Todo so, consult a qualified spe‐
cialist workshop.
For engine oil level turn on ignition #
Switch the ignition on tocheck the engine oil
le ve l.
Engine oil level System inoperative
The fill le vel sensor is defective or not plugged in. #
Have the oil le vel display checked at a quali‐
fi ed specialist workshop.
Engine oil level System currently unavail. #
Close the bonn et.
Checking engine oil le vel with on-board com‐
puter (engine with oil dipst ick)
Re quirements:
R The vehicle is le vel during the measuring
process.
R The engine is switched off at normal operat‐
ingtemp erature.
R Awa iting period of five minutes is obser ved.
R The ignition is switched on.
To check the engine oil le vel with the on-board
computer, the engine must ha veafill le vel sen‐
sor. If not, the engine oil le vel can be checked
only with the oil dipstick (/ page 223).
On-board computer: 4 Service 5
Engine oil level
The following messa ges may appear on the
di splay of the on-boa rdcompu ter:
Engine oil level OK #
Do not top up oil.
Engine oil level Add 1,0 l #
Addth e specified quantity of oil
(/ page 224). #
Repeat the engine oil measurement af ter a
fe w minutes.
Engine oil level Reduce oil level
The oil le vel is too high. #
Siphon off any excess engine oil that has
been added. Todo so, consult a qualified spe‐
cialist workshop.
For engine oil level turn on ignition #
Switch on the ignition.
Waiting period for engine oil level not observed #
Ifth e engine is at normal operating temp era‐
ture, repeat the engine oil measurement af ter
appr oximately five minutes. #
Ifth e engine is not at normal operating tem‐
perature, repeat the engine oil measurement
af te r appro ximately 30 minutes.
Engine oil level Not with the engine running #
Switch off the engine and, when it is at nor‐
mal operating temp erature, wait appr ox‐
imately five minutes before measu ring the
engine oil le vel.
Engine oil level System inoperative
The engine oil le vel measurement is malfunction‐
ing. #
Check the oil le vel with the oil dipstick
(/ page 223). #
Have the oil le vel display checked at a quali‐
fi ed specialist workshop.
Checking the engine oil le vel with an oil dip‐
st ick &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. The engine oil becomes dirty during operation,
loses
quality and also gradually loses volume.
Check the oil le velre gularly and top up the oil or
ha ve itch anged if necessar y.
Re gular lych eck thefluid le vel and the major
assemblies for leaks . Ifyou de tect fluid loss, for
ex ample, oil drops on theve hicle parking space,
consult a qualified specialist workshop as quickly
as possible. #
Only check the oil le vel when the engine is at
normal operating temp erature. Maintenance and care
223

Oil dipstick and engine oil
filler opening (e xample:
petrol engine) Oil dipstick and engine oil
filler opening (e xample:
diesel engine) #
Pull oil dipstick 1out of the dipstick tube. #
Wipe the oil dipstick 1using a lint-free
clo th. #
Insert the oil dipstick 1back into the guide
tube as far as it will go and pull it out again.
If th e le vel is between MIN mark 3and MAX
mark 2,the oil le vel is adequate. #
Ifth e oil le vel has dropped toor below mini‐
mum mark 3, open cap 4and top up the
engine oil (/ page 224).
The dif fere nce in quantity between mar ks2 and
3 depends on the engine:
R Diesel engines, about 2 l
R Petrol engines about 1.5 litres To
pping up the engine oil &
WARNING Risk offire and injury from
engine oil
If engine oil comes into con tact with hot com‐
ponent parts in the engine compartment, it
may ignite. #
Make sure that no engine oil is spilled
next tothefiller opening. #
Allow the engine tocool off and thor‐
oughly clean the engine oil from compo‐
nent parts before starting theve hicle. &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. *
NO
TEDama gecaused bytopping up too
much engine oil To
o much engine oil can damage the engine
or the catalytic con verter. #
Have excess engine oil remo ved at a
qu alified specialist workshop. *
NO
TEEngine damage due touse of addi‐
tives in the engine oil The use of additional additives in
the engine
oil can damage the engine. #
Do not use any additional additives in
the engine oil. +
ENVIRONMEN
TALNO TEEnvironmental
damage due tohydraulic fluid le vel spill‐
ages while topping up If
fluid spills on tosoil, the environment will be
damaged. #
Make sure that no fluid spills while top‐
ping up. 224
Maintenance and care

Example: engine oil
filler opening #
Obser vethe information rega rding appr oved
engine oil under "Operating fluids and capaci‐
ties" (/ page273). #
Unscr ewand remo vethe cap 1. #
Top up engine oil. #
Fitthe cap 1onthefiller opening and
tigh ten.
When doing so, make su rethat the cap
engages cor rectly. #
If present, check the oil le vel using the oil dip‐
st ick (/ page 223). #
Inthe case of vehicles without an oil dipstic k,
ch eck the oil le vel with the on-board com‐
puter af terth e next journey (/ page 222).
It is necessary torunth e engine for an extended
pe riod af ter each oil top up tocor rectly de tect
th e oil le vel. Fill le velch anges during oil top ups
may not be immediately visible. Depending on the
driving profile, the new oil le vel can only be dis‐
pla yed af ter a driving time of up to60 minutes.
If necessa ry, only top up thequ antity of oil shown
in the instrument clus ter display and check the
oil le vel again af terth e next journe y. Checking/topping up
the coolant &
WARNING Risk offire ‑ and inju ryfrom
antifreeze
If antifreeze comes into contact with hot com‐
ponent parts in the engine compartment, it
may ignite. #
Allow the engine tocool down before
yo uto p up the antifreeze. #
Make sure that no antifreeze spills out
next tothefiller opening. #
Thoroughly clean the antifreeze from
component parts before starting the
ve hicle. &
WARNING Risk of scalding from hot
coolant
If yo u open the cap, you could be scalded. #
Letthe mo tor cool down before opening
th e cap. #
When opening the cap, wear pr otective
gl ove s and saf etygl asses. #
Open the cap slowly torelease pres‐
sure. Only
check and top up the coolant le vel when the
ve hicle is stationary on a le vel sur face and the
engine has cooled down. The coolant temp era‐
ture must be below 50°C. &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. Coolant con
tains glyc ol and is therefore poison‐
ous. #
Obser vethe information under "Operating flu‐
ids and capacities" (/ page274).
* NO
TEPaint wo rkdamage due tocoolant If coolant
gets on painted sur faces, the paint‐
wo rkcan be damaged. #
Add coolant carefully. #
Remo vespilled coolant. Re
gular lych eck the engine cooling sy stem and
th e heating sy stem for leaks . Ifthere is a loss of
coolant, ha vethe cause de term ined and rectified
in a qualified specialist workshop without dela y. Maintenance and care
225

Example: cap and coolant
expansion reser voir
Checking the coolant le vel #
Slowly turn the cap 1ofthe coolant expan‐
sion reser voir2 half a turn anti-clockwise
and allow overpressure toescape. #
Turn cap 1further and remo veit.
The coolant le vel is cor rect in thefo llowing cases:
R uptomar ker bar 3when the engine is cold
R ifth e engine is warm, up to1.5 cm over
mar ker bar 3
To pping up the coolant
Only use coolant appr ovedfo r Mercedes-Benz to
avo id damaging the engine cooling sy stem. #
Refe rto the information on coolant
(/ page 274). #
Refill th e coolant up tothe mar ker bar 3in
th efiller opening of the coolant expansion
re ser voir2. #
Replace cap 1and tighten in a clockwise
direction. #
Start the engine. #
Set thete mp erature in theve hicle interior to
th e maximum output on the cont rol panel of
th e climate cont rol. #
After about five minutes, switch off the
engine again and allow it tocool down. #
Che ckthe coolant le vel again and top up the
coolant if necessar y. Fi
lling up the windscreen washer sy stem &
WARNING Risk offire and injury from
windscreen washer concentrate
Wi ndscreen washer concentrate is highly
fl ammable. #
Avoid fire , naked flames, smoking and
th e creation of spar kswhen using wind‐
screen washer concentrate. &
WARNING Risk of burn s from hot com‐
ponent parts in the engine compartment
Cer tain component pa rts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and pa rts of theex haust sy stem. #
Allow the engine tocool down and only
to uch component parts desc ribed in the
fo llowing. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids that
are also suitable for use on plast ic sur‐
fa ces, e.g. MB SummerFit or MB Winter‐
Fit. To
pping up the washer fluid Wa
sher fluid reser voir (e xamp le) #
Obser vethe no tes on windshield cleaning
agents (/ page275). 226
Maintenance and care

#
Do not use a high-p ressure cleaner with
a ro und-spr aynozzle. #
Keep thewate r jet moving cons tantly
while cleaning. #
Do not clean thefo llowing components
with the high-pressure cleaner:
R electrical components
R plug connectors
R reve rsing camera
R drivetra in
R seals
R hoses *
NO
TEDama gecaused bythe use of a
high-pressure cleaner in theve hicle inte‐
ri or The pressurised
water created bythe high-
pressure cleaner and the associated spr ay
could cause considerable damage totheve hi‐
cle. #
Never use a high-pressu recleaner in the
ve hicle interior. *
NO
TEDama getothe emissions cont rol
sy stem due toimproper cleaning Cleaning
the sy stem when it is warm orthe
direct ef fect of water jets in theex haust pipe
can damage the emissions cont rol sy stem. #
Clean the sy stem only when it is cold. #
Do not direct thewate r jet into the
ex haust pipe. Wa
shing the engine
* NO
TEDama geand malfunctions due to
wa shing the engine #
Toprev ent damage and malfunctions of
th e engine, obser vethefo llowing
points:
R when using high-pressure or steam
cleaners, do not point thewa ter jet
directly at electrical components
and the end of electric cables.
R make sure that no water enters the
ve nt and ventilation openings. R
use prese rvative agents in the
engine af terwa shing the engine.
R protect the belt drive from preser va‐
tion agents. Wa
shing theve hicle byhand Obser
vethe legal requ irements, forex ample in
many countries washing byhand is only allo wed
at specially designated wash ba ys. #
Washtheve hicle with luk ewarm wate r and a
soft car sponge. When doing so, do not
ex pose theve hicle todirect sunlight. #
Use a mild cleaning agent, e.g. a Mercedes-
Benz appr oved car shampoo. #
Carefully spr aytheve hicle with water and dry
off with a leath er cloth. Do not point the
wate r jet directly into the air inlet grille.
When operating theve hicle in winter, remo veall
traces of road salt deposits carefully and as soon
as possible. Note
s on care of paint and matt finish *
NO
TEPaint wo rkdamage and cor rosion
due toinadequate care Fa
ilure toprom ptly and thoroughly remo ve
dirt from bird droppings or other residue
could result in paintwork damage and cor ro‐
sion at a later date. #
Clean dirt off paint and matt finish thor‐
oughly and as soon as possible. Obser
vethe no tes on cleaning and care toavo id
paint workdamage.
Pa int
R Insect remains: soak with insect remo ver and
th en wash off.
R Bird droppings: soak with water and then
wa sh off.
R Tree resin, oils, fuels and greases: remo veby
ru bbing gently wi tha clo thsoaked in petro‐
leum ether or lighter fluid.
R Coolant and brake fluid: remo vewith a moist
clo thand clean water.
R Tarst ains: use tarre mo ver.
R Wax: use silicone remo ver. 228
Maintenance and care