2021 MERCEDES-BENZ V-CLASS MPV engine

Obser
vethefo llowing no tes:
R Recharge the battery more frequently in the
fo llowing cases:
- You predominantly drive short dis tances.
- You predominantly drive at low outside
te mp eratures.
- You lea vetheve hicle par kedfo r a lengt hy
period.
In order forth e batteries toachie vetheir max‐
imum possible service life, they must alw ays
be suf ficiently charge d.
R Consult a qualified specialist workshop if you
wish tolea veyour vehicle par ked up for a
long period of time.
R When you park theve hicle, remo vetheke y if
yo u do not require any elect rical consumers.
The vehicle will then use very little energy,
th us conserving bat tery powe r.
R Ifyo ur vehicle requ ires jump-s tarting, or if you
wish toprov ide jump-s tarting assis tance to
ano ther vehicle, only use the jump-s tart con‐
nection point in the engine compartment
(/ page 237).
Installation locations
Yo ur vehicle may be equipped with thefo llowing
two batteries located in the seat base of the
ri ght-hand front seat, depending on the equip‐
ment version:
R Starter battery
R Suppo rtbattery St
arting assistance and charging the12 V
battery &
WARNING Risk ofexplosion from a fro‐
zen battery
A dischar ged battery may freeze at temp era‐
tures slightly abo veor below freezing point.
During starting assis tance or battery charg‐
ing, battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis‐
ta nce. If
th ewa rning/indicator lamps do not light up in
th e instrument clus ter at temp eratures around or
below freezing, it is highly probable that the dis‐
ch arge d battery has frozen. In
this case, obser vethefo llowing points:
R do not give theve hicle starting assis tance or
ch arge the battery
R the service life of a battery that has been
th awe d may be reduced drastically
R thest arting behaviour may de teriorate, par‐
ticularly at low temp eratures
R it is recommended that you ha veath awed
battery checked at a qualified specialist work‐
shop &
WARNING Risk ofexplosion during
ch arging process and starting assis tance
During thech arging process and starting
assis tance, the battery may release an explo‐
sive gas mixture. #
Avoid fire , naked flames, creating
spar ksand smoking. #
Make sure there is suf ficient ventilation. #
Do not lean over a batter y. &
WARNING Danger of chemical burns
from the battery acid
Battery acid is caustic. #
Avoid contact with the skin, eyes or
clo thing. #
Do not lean overth e batter y. #
Do not inhale battery gases. #
Keep children away from the batter y. #
Immedia tely rinse battery acid off thor‐
oughly with plenty of clean water and
seek medical attention immediately. St
arting assistance
* NO
TEDama gecaused bynume rous or
ex tended attempts tostart the engine Nume
rous or extended attempts tostart the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. Do not use a
rapid charging device tostart the
ve hicle. If your vehicle's battery is dischar ged,
th e engine can be jump-s tarted from ano ther
ve hicle or from a donor battery using jump leads.
Fo rth is purpose, theve hicle has a jump-s tart
connection point in the engine compartment. Breakdown assis
tance 237

When jump-s
tarting, obser vethefo llowing points:
R The battery is not accessible in all vehicles. If
th eot her vehicle's battery is not accessible,
st arting assis tance is tobe pr ovided using a
donor battery or a starting assis tance device.
R You may only jump-s tart theve hicle when the
engine and exhaust sy stem are cold.
R Do not start the engine if the battery is fro‐
zen. Let the battery thaw firs t.
R Starting assis tance may only be pr ovided
using batteries with a nominal voltage of 12V.
R Only use jump leads that ha vea suf ficient
cross-section and insulate dte rm inal clamps.
R Ifth e battery is fully dischar ged, attach the
donor battery for a few minutes before
attem pting tostart. This charge sth e dis‐
ch arge d battery a little.
R Make sure that the two vehicles do not touch.
Jump leads and fur ther information rega rding
st arting assis tance can be obtained at any quali‐
fi ed specialist workshop.
Ensure thefo llowing before connecting the jump
lead:
R The jump leads are not damaged.
R Parts of thete rm inal clamps which are not
insulated do not come into conta ct withother
me tal parts while the jump leads are connec‐
te dto the batter y.
R The jump leads do not touch moving parts
when the engine is star ted and while it is run‐
ning, su chastheV- belt pulley or thefa n. #
Apply the parking brake. #
Vehicles with automatic transmission:
shift the transmission toposition 005D. #
Vehicles with manual transmission: shift
to neutral. #
Switch off all electrical consumers, e.g. audio
device, bl ower. #
Switch off the ignition immediately and
re mo vethekey. #
Open the bonn et (/ page 221). Connecting and disconnecting
the ju mp lead Example: jump-s
tart connection point #
Push contact pr otection co ver1 ofthe
jump-s tart connection point towa rdsth ere ar
of theve hicle against the spring pressure as
fa r as it will go.
The jump-s tart connection point is visible. Te
rm inal connection diagram #
Remo vethe co ver from positive term inal 3
of the donor batter y. #
Connect the positive term inal clamp of the
jump lead topositive term inal 3ofthe
donor batter y,and then topositive term inal
5 ofthe jump-s tart connection point. #
Connect the negative term inal clamp of the
jump lead tonegati ve terminal 2ofthe
donor batter y,and then toear thcontact 4
of your ow nve hicle. #
Start the engine of the donor vehicle and run
it at idling speed. 238
Breakdown assis tance

#
Insert theke y into the ignition loc k,start the
engine and let it runfo r se veral minutes. #
Before disconnecting the jump leads, switch
on an electrical consumer in your ow nve hi‐
cle, e.g. there ar wind owheater or the light‐
ing. #
Disconnect the negative term inal clamp of
th e jump lead from ear thcontact 4and
th en from negative term inal 2ofthe donor
batter y. #
Disconnect the positive term inal clamp of the
jump lead from positive term inal 5onthe
jump-s tart connection point, and then from
positive term inal 3ofthe donor batter y.
Con tact pr otection co ver1 is automatically
re turned forw ards toits original position by
th e spring forc e and the jump-s tart connec‐
tion point is closed. #
Position the co ver on positive term inal 3of
th e donor batter y. #
Have the battery checked at a qualified spe‐
cialist workshop.
Charging the12 V battery
* NO
TEDama getothe electronics caused
by non-app rove dch arging devices Charging a
fitted battery wi tha battery
ch arge r which has not been appro vedby
Mercedes-Benz can damage the on-board
electronics. #
Only use a battery charge r which has
been appro vedby Mercedes-Benz and
which permits charging the battery
when it is fitted in theve hicle. #
Only charge the battery using the jump-
st art connection point. A battery
charge r specially adapte dfor
Mercedes-Benz vehicles and tested and appr oved
fo r Mercedes-Benz is available as an accesso ry.
Fu rther information is available from any
Mercedes-Benz Service Cent re.Re ad the operat‐
ing instructions foryo ur charge r before charging
th e batter y.
Re charge the battery more frequently if you use
th eve hicle mainly for short trips and/or drive at
low outside temp eratures. #
Connect the battery charge rto the positive
te rm inal and ear thcontact in the same order
as when connecting the donor battery in the
jump-s tarting procedure. %
If a battery is not
fitted and not in service,
yo u should charge itev ery thre e months. This
helps tocounteract self-discharging and pre‐
ve nt damage tothe batter y.
12 V battery care
* NO
TEBattery discharge due toleakage
cur rents Dirty battery
term inal clamps and battery sur‐
fa ces cause lea kage cur rents. This can lead
to the battery discharging. #
Keep the battery term inals and battery
sur faces clean and dr y. *
NO
TEDama getothe battery housing
due toimproper cleaning If
yo u use cleaning agents con taining fuel,
th ese can damage the battery housing. #
Do not use cleaning agents containing
fuel. *
NO
TEDama getothe battery due toself-
dischar ge If dirt
gets into the battery cell, the self-dis‐
ch arge ofthe battery is increased and the
battery can be damaged. #
Only clean the battery with the cell caps
scr ewed in. Obser
vethefo llowing points on battery care: #
Regular lych eck the battery term inals and the
fast ening of the negative cable tothech assis
to ensure that they are firm lyseated. #
Lightly grease the undersides of the battery
te rm inal clamps with acid- resis tant grease. #
Only clean the battery housing with commer‐
cially available cleaning agents. Disconnecting and
removing the star ter bat‐
te ry &
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
There is a danger of hydrogen gas igniting
when charging the battery if there is a short
circuit or spar ksstart toform. Breakdown assis
tance 239

#
Make sure that the positive term inal of
th e connected battery does not come
into contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
The described order of the battery
clamps must be obser ved when con‐
necting and disconnecting the batter y. #
When giving starting assistance, alw ays
make sure that you on lyconnect battery
te rm inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jump
lead. #
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. &
WARNING Danger of chemical burns
from the battery acid
Battery acid is caustic. #
Avoid contact with the skin, eyes or
clo thing. #
Do not lean overth e batter y. #
Do not inhale battery gases. #
Keep children away from the batter y. #
Immedia tely rinse battery acid off thor‐
oughly with plenty of clean water and
seek medical attention immediately. *
NO
TEDama getoelectronic components
due towo rkcar ried out incor rectly on the
battery If
th est ar ter battery is disconnected before
th eke y is remo ved from the ignition loc k,
electronic components or assemblies, such
as the alternator, can be damaged. #
Switch off the engine and remo vethe
ke y from the ignition loc k. #
Check tosee that there are no indicator
lamps lit in the instrument clus ter. #
Alwaysre mo vethe negative term inal
clamp firs t and then the positive term i‐
nal clamp. #
Do not inter change the battery clamps. Alw
ays ha vewo rkon the battery car ried out at a
qu alified specialist workshop. If, in
exceptional circums tances, you must dis‐
connect the battery yourself, pay attention tothe
fo llowing:
R Obser vethe no tes on the12 V battery
(/ page 235).
R Secure theve hicle toprev ent it from rolling
aw ay.
R Afterth e battery has been disconnected, the
parking brake is automatically applied. Yo u
can then no longer mo vetheve hicle.
R Forve hicles with an automatic transmission,
th e transmission is loc ked in position 005Dafter
disconnecting the batter y.Yo u can then no
longer mo vetheve hicle.
R The battery and the co ver of the positive ter‐
minal clamp must be fitted securely du ring
ope ration. Seat base (e
xamp le:right-hand front seat)
The following description on connecting and fit‐
ting the battery uses theex ample of thest ar ter
battery in the seat base of theright-hand front
seat. #
Switch off all electrical consumers. #
Switch off the engine and remo vethekey
from the ignition loc k. #
Open the front right-hand door. #
Press bo thcatch springs 1down and
re mo vecover2 upwards from the seat
base. #
Remo vecover2 bypulling upwards at an
angle from the seat base. 240
Breakdown assis tance

Open seat base (e
xamp le:right-hand front seat) #
Remo vescr ews5 from holder 6. #
Remo veholder 6. #
Remo ve ve nt hose 4from theto p of the bat‐
te ry. #
Pull the battery out of the seat base until the
negati ve terminal clamp can be released and
re mo ved. #
Disconnect the negative term inal clamp from
negative term inal 3. #
Remo vethe negative term inal clamp in such a
wa yth at the battery term inal clamp no longer
to uches negative term inal 3. Example:
star ter battery #
Remo vethe battery from the seat base and
place it on the door sill as shown. If neces‐
sar y,hold the battery byhandles 9. #
Remo vethe clamp co ver of positive term inal
8. #
Remo vepositive term inal clamp 8from pos‐
itive term inal 7. #
Remo vepositive clamp 8in such a wayth at
it no lon gerto uches positive term inal 7. #
Lift the battery out of the door sill byhandles
9. Connecting and
fitting the star ter battery &
WARNING Risk ofexplosion from hydro‐
ge nga s igniting
There is a danger of hydrogen gas igniting
when charging the battery if there is a short
circuit or spar ksstart toform. #
Make sure that the positive term inal of
th e connected battery does not come
into contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
The described order of the battery
clamps must be obser ved when con‐
necting and disconnecting the batter y. #
When giving starting assistance, alw ays
make sure that you on lyconnect battery
te rm inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jump
lead. #
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. *
NO
TEDama getothe on-board electron‐
ics due toreve rsing the battery clamps Incor
rectly connecting the battery can dam‐
age the on-board electronics. #
Always connect the battery as descri‐
bed in thefo llowing sequence. Ne ver
re ve rseth ete rm inal clamps. The
following description on connecting and fit‐
ting the battery uses theex ample of thest ar ter
battery in the seat base of theright-hand front
seat. Example:
star ter battery #
Place the battery on the door sill as shown
and secure with handles 3if necessar y. Breakdown assis
tance 241

#
Turn theke yto position 005Ainthe ignition lock
and remo veit from the ignition loc k. #
Use the parking brake tosecure theve hicle
against rolling away. #
Secu retheve hicle bythe wheels. To
wing eyesto rage location The
towing eye is located in theve hicle tool kit
(/ page 247). Fi
tting/ removing the towing eye Fi
tting and removing the front towing eye
* NO
TEDama getotheve hicle due to
incor rect use of theto wing eye When a
towing eye is used toreco ver a vehi‐
cle, theve hicle may be damaged in the proc‐
ess. #
Only use theto wing eyeto to waw ay or
to w start theve hicle. Fixture
forth e front towing eyeinthe bumper #
Take theto wing eye and scr ewdriver from the
ve hicle tool kit (/ page247).
Fi tting #
Press the ar row on co ver1 and remo ve
co ver1 from the opening.
Yo u will see thefixture forth eto wing eye. #
Screw intheto wing eye clockwise tothe
st op. #
Insert the scr ewdriver into theto wing eyeand
tighten theto wing eye. #
Stow th e screwdriver in theve hicle tool kit.
Re moving #
Remo vethe scr ewdriver from theve hicle tool
kit. #
Insert the scr ewdriver into theto wing eyeand
turn theto wing eye anti-clockwise. #
Unscr ewand remo vetheto wing eye. #
Insert co ver1 with the lug at theto p and
press it in at the bottom until it engages. #
Stow th eto wing eye and the scr ewdriver with
th eve hicle tool kit.
Re ar towing eye Re
ar towing eye under the bumper #
When towing away ortow- starting a vehicle,
attach theto wing device torear towing eye
2 . #
Ifth eve hicle is equipped with a trailer tow
hitch, attach theto wing device tothe trailer
to w hit ch (/page 277). #
Obse rveth e no tes on permissible towing
me thods (/ page242). To
w starting vehicle (eme rgency engine start) Ve
hicles with automatic transmission
* NO
TEDama getothe automatic trans‐
mission due to tow-starting The automatic transmission may be damaged
in
the process of tow- starting vehicles with
automatic transmission. #
Vehicles with automatic transmission
must not be tow- star ted. #
Obser vethe no tes and information on start‐
ing assis tance (/ page 237). 246
Breakdown assis tance

Ve
hicles with manual transmission #
Obser vethe no tes on permissible towing
me thods (/ page242).
Be fore tow- starting, ensure thefo llowing:
R make sure that the battery is connected and
ch arge d. The ignition cannot be switched on
ot herwise and there will be no steering and
braking assis tance.
R use a towing bar and attach it tothe front
to wing eye (/ page246) on ly.
R ifth e engine does not start af ter a few sec‐
onds, try a jump-sta rting procedure using the
battery of ano ther vehicle (/ page 237).
To w- starting procedure #
Switch on the hazard warning lamps
(/ page 107). #
If necessar y,allow the engine and the
ex haust sy stem tocool down. #
Switch on the ignition. #
Shift to2nd or 3rd gear. #
Release the parking brake. #
Keep the clutch pedal fully depressed when
to w starting theve hicle. #
Release the clutch pedal slowl y.#
When the engine has star ted, shift toneutral
immedia tely. #
Stop in accordance with the tra ffic condi‐
tions. #
Use the parking brake tosecure theve hicle
against rolling away. #
Remo vetheto wing device. #
Remo vetheto wing eye. #
Switch off the hazard warning lamps
(/ page 107). Electrical fuses
Note
s on electrical fuses *
NO
TEElectrical fuses #
Obser vethe information in the supple‐
ment. You may otherwise failto recog‐
nise dangers. The fuse allocation
chart and the information on
th e fuses can be found in the "Fuse allocation
ch art" Supplement. Ve
hicle tool kit Information on
theve hicle tool kit The
vehicle tool kit is in there ar stow age com‐
partment.
Apart from some countr y-specific variants, vehi‐
cles without a spare wheel are not equipped with
a tyre-changing tool.
If yo ur vehicle is equipped with a tyre-change tool
kit, you can find it in theve hicle tool kit in the
re ar stow age compartment.
Some tools forch anging a wheel are specific to
th eve hicle. For more information on which tyre-
ch ange tool kits are requ ired and appr ovedfor
per form ing a wheel change on your vehicle, con‐
sult a qualified specialist workshop.
Re quired tyre-change tool kits may include the
fo llowing, forex ample:
R Jack
R Wheel spanner
R Ratchet ring spanner
% The jack has a maximum
weight of 7.5 kg
depending on theve hicle's equipment.
Yo u will find the maximum load capacity of
th e jack stated on the adhesive label
attached tothe jac k.
The jack is maintenance-free. If there is a
malfunction, please contact a qualified spe‐
cialist workshop. St
ow age comp artment in there ar Opening
thesto wage compa rtment St
ow age compartment in there ar on theright-
hand side of theve hicle Breakdown assis
tance 247

Due
tothe legally prescribed accuracy of the
speedome ter and odome ter displa ys,th efo llow‐
ing tyres are not permitte dfo rta xis and hire cars:
R Wheel size catego ry 1
- 195/65 R16C
R Wheel size category 2
- 225/55 R17XL
- 245/45 R18XL
If th e wheel size category changes, you must
ha ve your vehicle's contro l unitsrecoded at a
qu alified specialist workshop. Information on
the direction of the tyres'
ro tation Ty
res with a specified direction of rotation ha ve
additional benefits, e.g. if there is a risk of aqua‐
planing. You will on lyga in these benefits if the
cor rect direction of rotation is obser ved.
An ar row on the side wall of the tyre indicates its
cor rect direction of rotation.
Yo u may also fit a spa rewheel against the direc‐
tion of rotation. Obser vethe time restriction on
use as well as the speed limitation specified on
th e spare wheel. Information on
storing wheels Obser
vethefo llowing when storing wheels:
R Wheels that ha vebeen remo ved should be
st ored in a cool, dry and, if possible, dark
place.
R Protect the tyres from oil, grease and fuel. Preparing
theve hicle for a wheel change Requ
irements
R The tyre-change tool kit is available.
R The vehicle is not on a slope.
R The vehicle is on solid, non-slippery and le vel
ground. #
Appl yth e parking brake. #
Movethe front wheels tothest ra ight-ahead
position. #
Vehicles with manual transmission:
engage firs t or reve rsege ar 005E. #
Vehicles with automatic transmission:
shift the transmission toposition 005D. #
Switch off the engine. #
Make sure that the engine cann otbe star ted. #
On le velte rrain: place choc ks orother suita‐
ble objects under the front and rear of the
wheel that is diagonally opposite the wheel to
be changed. #
On slight inclines: placechoc ks orother
suitable objects under the wheels on the
front and rear axles opposite the wheel tobe
ch anged. #
If included in theve hicle equipment, take the
tyre-change tool kit out of theve hicle tool kit
(/ page 247). #
If included in theve hicle equipment, remo ve
th e spare wheel from the spare wheel brac ket
( / page 265). #
If necessar y,remo vethe wheel co ver. #
Using the wheel wrench, loosen the wheel
nuts/bolts on the wheel you wish tochange
by about one full turn. Do not unscr ewthe
wheel bolts/nuts comple tely. #
Raise theve hicle (/ page 259). Ra
ising theve hicle when changing a wheel &
WARNING Risk of injury from incorrect
positioning of the jack
If yo u do not position the jack cor rectly at the
appropriate jacking point of theve hicle, the
jack could tip wi th theve hicle raised. #
Only position the jack at the appropriate
jacking point of theve hicle. The base of
th e jack must be positioned vertically
under the jacking point of theve hicle. &
WARNING Risk of injury fromvehicle tip‐
ping
On slopes, the jack could tip with theve hicle
ra ised. Wheels and tyres
259