2021 MERCEDES-BENZ V-CLASS jump start

#
Press eme rgency key2 into the opening in
th eke y in the direction of the ar row until bat-
te ry compartment co ver1 opens. When
doing so, do not hold battery compartment
co ver1 shut. #
Tapth eke y against the palm of your hand so
th at battery 3falls out of the battery com-
partment. #
Insert the new battery into the battery tr ay
with the positive pole facing upwards. Use a
lint-f ree clo thtodo so. #
Fit battery compartment co ver1 tothekey
casing with the front lugs /rst and push it
closed. #
Slide emer gency key2 back in tothekey
( / page 52). R
R
ectifying pr
ectifying pr oblems wit
oblems with t
h the key
he key It is no long
It is no long
er possible t
er possible t o loc
o lock t
k the v
he v ehicle using t
ehicle using t he
he
key.
key.
Po ssible causes:
R The doors are not closed proper ly.
R The central locking system has malfunctioned. #
Close the doors proper lyand lock theve hicle
again. #
Lock theve hicle using the emer gency key
( / page 52) or press down the locking pins
and then close the doors. #
Have the central locking system checked as
soon as possible at a quali/ed specialist work-
shop.
Y
Y ou can no long ou can no long er loc
er lock or unloc
k or unloc k t
k the v
he v ehicle.
ehicle.
Po ssible causes:
R The key battery is weak or dischar ged.
R The key is faulty. #
Check the battery using the indicator lamp and
re place the batter y,if necessary (/ page 51). #
Use the emer gency key element tolock and
unlock theve hicle (/ page 52). #
Have theke ych ecked at a quali/ed specialist
wo rkshop. The v
The v
ehicle will no
ehicle will no t st
t star
art wit
t wit h t
h the key.
he key.
Po ssible causes:
R The on-board elect rical system voltage is too
lo w. #
Switch o. all non-essential consume rs, such
as interior lighting, and try tostart theve hicle
again.
If th is does not work: #
Check the star ter battery and charge it, if nec-
essary (/ page 240).
or #
Jump-start theve hicle.
or #
Consult a quali/ed specialist workshop.
Y
Y ou hav
ou hav e los
e lost akey.
t a key. #
Have theke y deactivated at a quali/ed special-
ist workshop. #
Report the loss immediately totheve hicle
insu rers. #
If necessar y,ha ve the loc kschanged as well. Doors
Doors
U
Unloc
nloc king and opening t
king and opening t he door fr
he door from inside
om inside Door handle (e
xample: driver's door) #
Pull door handle 2.
Saf ety pin 1pops up when the door is
unloc ked. Opening and closing
53
53

Emerg
Emerg
ency br
ency br aking
aking
If, in exceptional cases, the service brake fails, you
can use the parking brake toper form emer gency
braking. The braking distance is then considerably
gr eater. #
While driving, press switch 1ofthe electric
parking brake.
The vehicle is braked as long as youke ep
switch 1ofthe electric parking brake
depressed.
The vehicle's brake lights light up.
The lon ger electric parking brake switch 1is
depressed, thegr eater the braking forc e.
During the braking procedure, you will receive the
fo llowing feedback from theve hicle:
R Awa rning tone sounds.
R The Release parking brake messageappears
in the inst rument cluster.
R The red! indicator lamp 0ashes in the
inst rument cluster.
When theve hicle has been braked toa standstill,
th e electric parking brake is applied. P P
ar
ar king up t
king up t he v
he vehicle
ehicle P
P
ar
ar king up t
king up t he v
he vehicle f
ehicle f or long
or longer t
er than f
han f our w
our w eeks
eeks #
Connect the star ter battery toa trickle charger
via a jump-start connection (/ page 240).
or #
Disconnect all bat teries (/ page 242).
P
P ar
ar king up t
king up t he v
he vehicle f
ehicle f or long
or longer t
er than six w
han six w eeks
eeks #
Contact a quali/ed specialist workshop and
seek advice.
The vehicle can otherwise su.er damage as a
re sult of lack of use. Dr Dr
iving and dr
iving and dr iving safe
iving safe ty syst
ty systems
ems N
No
ot
t es on dr
es on dr iving syst
iving syst ems and y
ems and y our r
our responsibility
esponsibility Yo
ur vehicle is equipped with driving systems
which assist you in driving, parking and manoeu-
vring theve hicle. The driving systems are only
aids. They are not a substitute foryo u paying
attention toyour sur roundings and do not relie ve
yo u of your responsibility per taining toroad tra1c
la w. The driver is alw aysre sponsible for maintain-
ing a safe distance totheve hicle in front, forve hi-
cle speed, for braking in good time and for st aying
in lane. Alw ays pay attention tothe tra1c and inter
vene if necessar y.Be awa reofthe limitations
re ga rding the safe use of these systems.
Driving systems can neither reduce therisk of
accident if youfa ilto adapt your driving style nor
ove rride the la wsof ph ysics. They cannot alw ays
ta ke into account road, weather or tra1c condi-
tions. Inf
Inf
or
ormation on v
mation on v ehicle sensor
ehicle sensor s and camer
s and cameras
as Some driving and driving saf
ety systems use cam-
eras and radar or ultrasonic sensors tomonitor the
area in front of, behind or next totheve hicle. 1
Cameras in the outside mir rors
2 Multifunction camera
3 Front camera
4 Ultrasonic sensors
5 Reversing camera
% Depending on theve hicle's equipment, the
ra dar sensors are integ rated on the side of the
re ar bumpers and/or behind the Mercedes
star in thera diator grille. &
W
WARNING
ARNING Risk of accident due torestric-
te d de tection per form ance of vehicle sen-
sors and cameras
If th e area around vehicle senso rsor cameras
is co vered, damaged or dirty, cer tain driving
and saf ety systems cann otfunction co rrectl y.
There is a risk of an accident. #
Keep the area around vehicle senso rsor
cameras clear of any obstructions and
clean. #
Have damage tothe bumper, radiator
gr ille or stone chipping in the area of the 152 152
Driving and parking

R
Further information on ABS (/ page 153)
R Further information on ESP ®
(/ page 153)
Fo r saf etyre asons, Mercedes-Benz recommends
th at you only use batteries that ha vebeen tested
and appro vedfo ryo ur vehicle byMercedes-Benz.
These bat teries pr ovide increased impact pr otec-
tion topreve ntvehicle occupants from su.ering
acid burns should the battery be damaged in an
accident. &
W
WARNING
ARNING Risk ofexplosion due toelec-
trostatic charge
Electrostatic charge can ignite the highly explo-
sive gas mixtu reinthe batter y. #
Todischar geany elect rostatic charge
th at may ha vebuilt up, touch the me tal
ve hicle body before handling the batter y. The high
ly0ammable gas mixtu reis created while
th e battery is charging and when jump-starting.
Make sure that nei ther you nor the battery is elec-
trostatically charge d.
Electrostatic charge can occur in thefo llowing
cases, forex ample:
R you are wearing synthetic clo thing.
R there is friction between your clo thing and the
seat.
R ifyo u drag or push the battery across a carpet
or other synthetic materials
R youru bth e battery with clo ths or towe ls &
W
WARNING
ARNING Danger of chemical burns from
th e 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. #
Immediately rinse bat tery acid o. thor-
oughly with plenty of clean water and
seek medical attention immediatel y. +
ENVIR ENVIR
ONMENT ONMENT AL NO
AL NOTE
TE Environmen tal
damage due toimproper disposal of bat-
te ries Batteries contain pollutants. It is
illegal todispose of them with the household
ru bbish. #
Dispose of batteries in an
environmentally responsible manner.
Ta ke dischar ged batteries toaqu ali/ed
specialist workshop or toa collection
point for used batteries. Obser
vethe saf ety no tes and pr otective measures
when handling batteries. Risk of
explosion Fire
, naked 0ames and smoking are
prohibited when handling the batter y.
Av oid creating spar ks. Electrolyte or battery acid is cor
rosive.
Av oid contact with the skin, eyes and
clo thing. Wear suitable pr otective
clo thing, in particular glo ves, an apron
and a saf ety mask. Immediately rinse
electrolyte acid splashes o. with clean
wa ter. If necessar y,seek medical
advice. We
areye pr otection. Ke
ep children at a safe distance. Obser
vethese Operating Instructions. Breakdown assistance
239 239

Obser
vethefo llowing no tes:
R Recharge the battery more frequently in the
fo llowing cases:
- You predominantly drive short distances.
- 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 maxi-
mum possible service life, they must alw ays be
su1ciently charge d.
R Consult a quali/ed specialist workshop if you
wish tolea veyour vehicle par ked up for long
periods.
R When you park theve hicle, remo vetheke y if
yo u do not requ ire any electrical consumers.
The vehicle will then use very little energy, thus
conserving battery po wer.
R Ifyo ur vehicle requ ires jump-starting, or if you
wish toprov ide jump-starting assistance to
ano ther vehicle, only use the jump-start con-
nection point in the engine compartment
(/ page 240).
Inst
Inst allation locations
allation locations
Yo ur vehicle may be equipped with thefo llowing
two batteries located in the seat base of theright-
hand front seat, depending on the equipment ver-
sion:
R Starter battery
R Support battery S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery &
W
WARNING
ARNING Risk ofexplosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
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 inst rument cluster 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 batter y.
R The service life of a bat tery that has been
th awe d may be reduced drasticall y.
R The starting beh aviour may de teriorate, partic-
ular lyat low temp eratures.
R It is recommended that you ha veath awe d bat-
te ry checked at a quali/ed specialist workshop. &
W
WARNING
ARNING Risk ofexplosion due toexplo-
sive mixture of gases
An explosive mixture of gases can escape from
th e battery during charging and starting assis-
ta nce. #
Fire, naked 0ames, smoking and creating
spar ksmust be avoided. #
Make sure there is adequate ventilation. #
Do not stand overth e batter y. &
W
WARNI NG
ARNI NGDanger of chemical burns from
th e 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. #
Immediately rinse battery acid o. thor-
oughly with plenty of clean water and
seek medical attention immediatel y. S
S
t
tar
ar ting assist
ting assist ance
ance
* NO
NOTE
TEDamage caused bynumerous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted 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, the
engine can be jump-star ted from ano ther vehicle
or from a donor battery using jump leads. Forth is
purpose, theve hicle has a jump-start connection
point in the engine compartment. 240
240
Breakdown assistance

When jump-starting, obser
vethefo llowing points:
R The battery is not accessible in all vehicles. If
th eot her vehicle's battery is not accessible,
starting assis tance is tobe pr ovided using a
donor battery or a starting assistance device.
R You may only jump-start theve hicle when the
engine and exhaust system are cold.
R Ifth e battery is frozen, do not start theve hicle.
Let the battery thaw /rst.
R Starting assis tance may only be pr ovided using
batteries with a nominal voltage of 12 V.
R Only use jump leads that ha vea su1cient
cross-section and insulated term 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 start-
ing assistance can be obtained at any quali/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 contact with other
me tal parts while the jump leads are connec-
te dto the batter y.
R The jump leads do not touch moving parts
when theve hicle is star ted, such as theV- belt
pulley or thefa n. #
Apply the parking brake. #
V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: shiTthe
transmission toposition j. #
V
Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: shiTto
neutral. #
Switch o. all electrical consumers, e.g. audio
equipment, blo wer. #
Switch o. theve hicle and remo vethekey. #
Open the bonnet (/ page 224). Connecting and disconnecting t
Connecting and disconnecting t
he jum
he jump lead
p lead Example: jump-start connection point
#
Push contact pr otection co ver1 ofthe jump-
start connection point towa rdsth ere ar of the
ve hicle against the spring pressure as far as it
will go.
Po siti veterm inal 5ofthe jump-start connec-
tion point is visible. Te
rm inal connection diag ram #
Remo vethe co ver from positive term inal 3of
th e 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 5ofthe
jump-start connection point. #
Connect the negative term inal clamp of the
jump lead tonegative term inal 2ofthe donor
batter y,and then toear thcontact 4ofyour
ow nve hicle. Breakdown assis
tance
241 241

#
Start the engine of the donor vehicle and run it
at idling speed. #
Start theve hicle and let the engine runfo r a
while. #
Before disconnecting the jump leads, switch
on an electrical consumer in your ow nve hicle,
e.g. there ar wind owheater or the lighting. #
Disconnect the negative term inal clamp of the
jump lead from ea rth contact 4and then
from negative term inal 2ofthe donor bat-
te ry. #
Disconnect the positive term inal clamp of the
jump lead from positive term inal 5onthe
jump-start connection point, and then from
positive term inal 3ofthe donor batter y.
Contact pr otection co ver1 is automatically
re turned forw ards toits original position bythe
spring forc e and the jump-start connection
point is closed. #
Position the co ver on positive term inal 3of
th e donor batter y. #
Have the battery checked at a quali/ed spe-
cialist workshop.
Char
Char ging t
ging t he 12 V batt
he 12 V batt ery
ery
* NO
NOTE
TEDamage tothe electronics caused
by non-appro vedch arging devices Charging a /tted battery with a battery
charger
which has not been appr ovedby Mercedes-
Benz can damage the on-board electronics. #
Only use a battery charge r which has
been appr ovedby Mercedes-Benz and
which permits charging the battery when
it is /t tedintheve hicle. #
Only charge the battery using the jump-
start connection point. A battery
charge r specially adap tedfo r Mercedes-
Benz vehicles and tested and appro vedfor
Mercedes-Benz is available as an accessor y.
Fu rther information is available from any
Mercedes-Benz Se rvice Centre. Read the operat-
ing inst ructions 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 ter-
minal and ear thcontact in the same order as when connecting
the donor battery in the
jump-starting procedu re.
% If a battery is not /tted and not in service, you
should charge itev ery thre e months. This
helps tocounteract self-discharging and pre-
ve nt damage tothe batter y.
12 V batt
12 V batt er
ery care
y care
* NO
NOTE
TEBattery dischar gedue toleakage
cur rents Dirty bat
tery term inal clamps and battery sur-
fa ces cause leakage cur rents. This can lead to
th e battery discharging. #
Keep the battery term inals and battery
sur faces clean and dr y. *
N
NO
OTE
TE Damage tothe battery housing due
to improper cleaning If
yo u use cleaning agents containing fuel,
th ese can damage the battery housing. #
Do not use cleaning agents containing
fuel. *
N NOOTE TE Damage tothe battery due toself-
dischar ge If dirt
gets into the battery cell, the self-dis-
ch arge ofthe battery is increased and the bat-
te ry can be damaged. #
Only clean the battery with the cell caps
scr ewe d in. Obser
vethefo llowing points on battery care: #
Regular lych eck the battery term inals and the
fa stening of the negative cable tothech assis
to ensure that they are /rmly seated. #
Lightly grease the undersides of the battery
te rm inal clamps with acid-resistant grease. #
Only clean the battery housing with commer-
cially available cleaning agents. Disconnecting and r
Disconnecting and r
emo
emoving t
ving t he st
he start
arter batt
er batt ery
ery &
W
WARNING
ARNING Risk ofexplosion due tohydro-
ge nga s igniting
If, when charging a batter y,there is a short cir-
cuit or spar ksstart toform ,th ere is a danger
of hydrogen gas igniting. 242
242
Breakdown assis
tance

#
Take care that the positive clamp con-
nected toa battery does not come into
contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,alw ays obser vethe sequence of
battery clamps described. #
Take care toonly connect battery term i-
nals of identical polarity when receiving
starting assistance. #
Obser vethe sequence described for con-
necting and disconnecting the jump
leads when receiving starting assistance. #
Do not connect or disconnect the battery
te rm inals while the engine is running. &
W
WARNI NG
ARNI NGDanger of chemical burns from
th e 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. #
Immediately rinse bat tery acid o. thor-
oughly with plenty of clean water and
seek medical attention immediatel y.*
N
NO
OTE
TE Damage toelectronic components
due towo rkcar ried out incor rectly on the
battery If
th e star ter battery is disconnected before
th eke y is remo ved from the ignition loc k,elec-
tronic components or assemblies, such as the
alternator, can be damaged. #
Switch o. theve hicle and remo vethe
ke y from the ignition loc k. #
Check tosee that there are no indicator
lamps lit in the inst rument cluster. #
Always disconnect the negative clamp
/rst and then the positive clamp. #
Do not inter change the battery clamps. Alw
ays ha veworkon the battery car ried out at a
qu ali/ed specialist workshop. If, in
exceptional circums tances, you must discon-
nect the battery yourself, pay attention tothefo l-
lowing:
R Obser vethe no tes on the 12 V battery
(/ page 238).
R Secure theve hicle toprev ent it from rolling
awa y.
R ATer the battery has been disconnected, the
parking brake is automatically applied. You can
th en no longer mo vetheve hicle.
R Forve hicles with an automatic transmission,
th e transmission is loc ked in position jaTer
disconnecting the batter y.Yo u can then no lon-
ge r mo vetheve hicle.
R The battery and the co ver of the positive term i-
nal clamp must be /t tedsecurely during opera-
tion. Seat base (e
xample:right-hand front seat)
The following description on connecting and /tting
th e battery uses theex ample of the star ter battery
in the seat base of theright-hand front seat. #
Switch o. all electrical consumers. #
Switch o. theve hicle and remo vetheke y from
th e ignition loc k. #
Open the front right-hand door. #
Press bo thcatch springs 1down and remo ve
co ver2 upwards from the seat base. #
Remo vecover2 bypulling upwards at an
angle from the seat base. Breakdown assistance
243
243

Open seat base (e
xample: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
negative term inal 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 necessar y,
hold the battery byhandles 9. #
Remo vethe clamp co ver of positive term inal
8. #
Remo vepositive term inal clamp 8from posi-
tive term inal 7. #
Remo vepositive clamp 8in such a wayth at it
no lon gerto uches positive term inal 7. #
LiTthe battery out of the door sill byhandles
9. Connecting and
Connecting and
/tting
/ttingt
the st
he st art
arter batt
er batt ery
ery &
W
WARNING
ARNING Risk ofexplosion due tohydro-
ge nga s igniting
If, when charging a batter y,there is a short cir-
cuit or spar ksstart toform ,th ere is a danger
of hydrogen gas igniting. #
Take care that the positive clamp con-
nected toa battery does not come into
contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,alw ays obser vethe sequence of
battery clamps described. #
Take care toonly connect battery term i-
nals of identical polarity when receiving
starting assistance. #
Obser vethe sequence described for con-
necting and disconnecting the jump
leads when receiving starting assistance. #
Do not connect or disconnect the battery
te rm inals while the engine is running. *
N
NOOTE
TE Damage tothe on-board electronics
due toreve rsing the battery clamps Incor
rectly connecting the battery can damage
th e on-board electronics. #
Always connect the battery as described
in thefo llowing sequence. Neverre ve rse
th ete rm inal clamps. The
following description on connecting and /tting
th e battery uses theex ample of the star 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. #
Connect positive term inal clamp 2topositive
te rm inal 1. The positive lead must be routed 244
244
Breakdown assistance