2021 MERCEDES-BENZ V-CLASS MPV key battery

Gene
rally, these are volatile data and will not be
st ored be yond the period of operation but will
only be processed within theve hicle itself. Con‐
trol units, vehicle keys forex ample, of ten contain
da ta memories. Their use permits thete mp orary
or permanent documentation of tech nical infor‐
mation about theve hicle's operating state, com‐
ponent loads, main tenance requirements and
te ch nical events or faults.
Depending on thete ch nical equipment, thefo l‐
lowing data are stored:
R operating status of sy stem components, such
as fill le vels, tyre pressure or battery status
R malfunctions or faults in impor tant sy stem
components, such as lights or brakes
R system reactions in special driving situations,
such as airbag deployment or the inter vention
of stability control sy stems
R information on events in which theve hicle is
damaged
In cer tain cases, it may be requ ired tostore data
th at wo uld ha veotherwise been temp orar y.This
may be the case if theve hicle has de tected a
malfunction, forex ample.
If yo u use services, such as repair services and
maintenance work,st ored operational data as
we ll as theve hicle identification number can be
re ad out and used. They can be read out by
service network emplo yees, such as workshops
and manufacturers or third parties, such as
breakdown services. The same is true in the case
of wa rranty claims and quality assurance meas‐
ures.
In general, there adout is per form ed via the
legally prescribed port forth e diagnostics con‐
nection in theve hicle. The operational data that
are read out document tech nical states of the
ve hicle or of individual components and assist in
th e diagnosis of malfunctions, compliance with
wa rranty obligations and quality impr ovement. To
th at end, these data, in particular information
about component loads, tech nical events, mal‐
functions and other faults may be transmitted
along with theve hicle identification number to
th e manufacturer. In addition, the manufacturer is
subject toproduct liability. Forth is reason, the
manufacturer also uses operational data from the
ve hicle, forex ample, forre calls. These data can
also be used toexamine the cus tomer's warranty
and guarantee claims. Fa
ult memories in theve hicle can be reset by a
service outlet or at your requ est as part of repair
or maintenance work.
Con venience and inf otainment functions
Yo u can store con venience settings and individual
settings in theve hicle and change or reset them
at any time.
Depending on theve hicle equipment, this
includes thefo llowing settings, forex ample:
R seat and steering wheel positions
R suspension and climate cont rol settings
R individual settings, such as interior lighting
Depending on the selected equipment, you can
import data into vehicle inf otainment functions
yo urself.
Depending on theve hicle equipment, this
includes thefo llowing data, forex ample:
R multimedia data, such as music, films or pho‐
to sfo r playback in an integrated multimedia
sy stem
R address book data for use in an integrated
hands-free sy stem or an integrated navigation
sy stem
R entered navigation destinations
R data on the use of Internet services
These data for con venience and inf otainment
functions may be sa ved locally in theve hicle or
th ey may be located on a device which you ha ve
connected totheve hicle, such as a smartphone,
USB flash drive or MP3 pla yer.If yo u ha ve
entered these data yourself, you can dele tethem
at any time.
This data is transmit ted from theve hicle tothird
parties only at your requ est. This applies, in par‐
ticular, when you use online services in accord‐
ance with the settings that you ha veselected.
Smartphone integ ration (e.g. Android Autoor
Apple CarPlay ®
)
If yo ur vehicle is equipped appropriatel y,yo u can
connect your smartphone or ano ther mobile end
device totheve hicle. You can then cont rolth em
by means of the cont rol elements integrated in
th eve hicle. The smartphone's picture and sound
can be output via the multimedia sy stem. Simul‐
ta neously, specific items of information are trans‐
fe rred to yo ur smartphone. Depending on the
type of integration, this includes position data,
day/night mode and other general vehicle sta‐
tuses. For more information, please consult the Gene
ral no tes 25

Key
Overview of
key functions &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in part icular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf fic.
R operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. &
WARNING Risk of accident due toinad‐
ve rtent turning of theke y in the ignition
lock
If yo u attach lar geor heavy objects totheke y,
th eke y could inadver tently turn in the ignition
lock while theve hicle is in motion. #
Do not attach any lar geor heavy objects
to thekey. #
Remo veake yring if it is cumbe rsome
before you insert theke y in the ignition
loc k. *
NO
TEDama getotheke y caused bymag‐
netic fields #
Keep theke yaw ay from strong mag‐
netic fields. Ke
y (e xamp le:vehicles with an EAS Y-PA CK tail‐
ga te and/or rear wind owwhich can be opened
separately)
1 Indicator lamp
2 Toopen or close the EASY -PAC Ktailgate, or
to unlo ck th ere ar wind owwhich can be
opened separately
3 Tolock theve hicle centra lly
4 Tounlo ckthe EASY -PAC Ktailgate and sliding
doors, or tounlo ckand open/close the elec‐
tric sliding door
5 Emer gency key
6 Tounlo cktheve hicle centra lly or onlythe
driver's door
The key's factory setting enables youto centrally
lock and unlock thefo llowing components:
R the driver's door and co-driver door
R the sliding doors
R theta ilgate
% If
yo u do not open theve hicle within appr ox‐
imately 40 seconds of unlocking, theve hicle
will lock again and anti-theft pr otection will
be primed again.
Do not keep theke yto ge ther with electronic devi‐
ces or me tallic objects. This can af fect theke y's
functionalit y.
% If
th ech eck lamp does not light up when you
press the0036 or0037 button, the battery is
dischar ged.
Re place theke y bat tery ( / page 50). Ac
tivating/deactivating the acoustic lo cking
ve rification signal Multimedia sy
stem:
4 © 5
Settings 5
Vehicle #
Activate or deacti vate Acoustic lock .
% Please no
te: Opening and closing
49

The selected setting
forth e acoustic locking
ve rification signal must comply wi th there le‐
va nt national road and traf fic re gulations. In
some countries, including German y,using the
acoustic locking verification signal is forbid‐
den bytraf fic la ws(in accordance with §16
Pa ra. 1 and §30 Para. 1 of the German
national road traf fic re gulations). The driver
of theve hicle must comply with these regula‐
tions. In countries where the use of this func‐
tion is forbidden, this function is not activa‐
te d in theve hicle and must not be activated. Changing
the unlocking settings The
key has thefo llowing adjus table unlocking
functions:
R unlock cent rally
R unlock the driver's door #
Toswitch between settings: press and hold
th e0036 and0037 buttons at the same time
fo r appro ximately six seconds until the indica‐
to r lamp flashes twice. #
Tounlo cktheve hicle centrally when the
unlocking function is selected for the driv‐
er's door: pressthe0036 button a second
time. Re
moving and inse rting the emer gency key %
The anti-theft alarm sy
stem (A TA) is triggered
when you unlo ckand open theve hicle using
th e emer gency key (/ page67). #
Toremo ve:push release cat ch1 inthe
direction of the ar row and simultaneously pull
emer gency key2 comp lete ly out of thekey. #
Toinser t:push emer gency key2 com‐
ple tely in totheke y until it en gage s and
re lease cat ch1 is back in its initial position. Re
placing the key battery &
DANG ER Risk of fata l injuries due to
swallowing batteries
Batteries contain toxic and cor rosive subs tan‐
ces. Swallowing batteries may cause se vere
internal burns tooccur within two hours.
There is a risk of fata l injur y. #
Keep batteries out of there ach of chil‐
dren. #
Ifth e battery compartment does not
close securely, do not use theke y any
lon ger and keep it out of there ach of
ch ildren. #
If batteries are swallo wed, seek medical
attention immediately. +
ENVIRONMEN
TALNO TEEnvironmental
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
environmen tally responsible manner.
Ta ke dischar ged batteries toaqu alified
specialist workshop or toa collection
point for used batteries. Re
quirements
R yourequ ire a CR 2025 3 V cell battery
Changing the bat tery
Mercedes-Benz recommends that you ha vethe
battery changed at a qualified specialist work‐
shop. #
Remo vethe emer gency key ( / page 50). 50
Opening and closing

#
Press emer gency key2 into the opening in
th eke y in the direction of the ar row until bat‐
te ry compa rtment co ver1 opens. When
doing so, do not hold battery compartment
co ver1 shut. #
Tapth eke y again stthe 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 up wards. Use a
lint-free clo thtodo so. #
Fit battery compartment co ver1 tothekey
casing wi th the front lugs firs t and push it
closed. #
Slide emergency key2 back into thekey
( / page 50). Re
ctifying problems with thekey It is no longer possible
tolock theve hicle
using theke y.
Po ssible causes:
R The doors are not closed proper ly.
R The centra l locking sy stem has malfunc‐
tioned. #
Close the doors properly and lock theve hicle
again. #
Lock theve hicle using the emer gency key
( / page 50) or press down the locking pins
and then close the doors. #
Have the cent ral locking sy stem checked as
soon as possible at a qualified specialist
wo rkshop.
Yo u cann otlock or unlock theve hicle any‐
more.
Po ssible causes:
R The key bat tery iswe ak or dischar ged.
R The key is faulty. #
Check the battery using the indicator lamp
and replace the batter y,if necessary
(/ page 49). #
Use the emer gency key element tolock and
unlock theve hicle (/ page 50). #
Have theke ych ecked at a qualified specialist
wo rkshop.
The engine cannot be star ted using the key.
Po ssible causes:
R The on-board electrical sy stem voltage is too
lo w. #
Switch off non-essential consumers, such as
interior lighting, and try tostart the engine
again.
If th is does not work: #
Check thest ar ter battery and charge it, if
necessary (/ page 237).
or #
Jump-s tart theve hicle.
or #
Consult a qualified specialist workshop.
Yo u ha velost a key. #
Have theke y deacti vated at a qualified spe‐
cialist workshop. #
Report the loss immediately totheve hicle
insurers. #
If necessar y,ha ve the loc kschanged as well. Doors
Un
locking and opening the door from inside Door handle (e
xamp le: driver's door) #
Pull door handle 2.
Locking pin 1pops up when the door is
unloc ked. Opening and closing
51

Only if
the green mark on the handwheel is
aligned with the green area on the ball neck is
th e ball neck securely engaged. #
Lock lock 6in handwheel 1with thekey. #
Remo vetheke y and place cap 5on lock 6.
The ball ne ckis securely ins talled only if the
ball neck can be loc ked and theke yre mo ved. #
Store the trailer hitch key in a safe place, e.g.
in theve hicle document wallet.
If yo u cannot remo vetheke y,the ball neck may
be dirty. #
Remo vethe ball neck (/ page178) and
clean it ( /page 229).
If yo ustill cannot lock the ball neck af ter cleaning
it, the trailer hitch is damaged. #
Remo vethe ball nec k.
Safe trailer ope ration is not guaranteed. The
ball neck mu stno longer be used for trailer
operation. #
Have the trailer hitch checked at a qualified
specialist workshop. Re
moving the ball ne ck Re
quirements
R Trailer hit chkey #
Remo vecap 5from lock 6in handwheel
1. #
Unlock lock 6in handwheel 1with th ekey. #
Hold ball neck 4in place. #
Pull handwheel 1outwards. Turn red mark
3 on handwheel 1into green area 2of
ball neck 4until handwheel 1engages.
Pa y attention tothe pictogram on handwheel
1. #
Pull ball neck 4out down wards. #
Ifth e ball neck is dirty, clean it
(/ page 229). %
Depending on
theve hicle equipment, the
holder forth e ball neck on theve hicle can be
pr otected with a co ver in the bumper. #
Store the ball neck with theke y inser ted in
th estow age space on theright-hand side in
th ere ar and remo vethe co verfo rth e ball
neck holder. #
Insert the co ver in the lo wer section of the
bumper and tighten the two quick- re lease fas‐
te ners forth e co ver (/ page177). Coupling/uncoupling a
trailer Re
quirements
R The ball neck must be engaged in a securely
locked position.
Tr ailers with 7-pin plugs can be connec tedto the
ve hicle using thefo llowing adap ters:
R Adapter plug
R Adapter cable
Coupling a trailer
* NO
TEDama getothest ar ter battery due
to full discharge Charging
the trailer battery using the po wer
supply of the trailer can damage thest ar ter
batter y. #
Do not use theve hicle's po wer supply
to charge the trailer batter y. 1
Eyeletfor break away cable
The eyelet on the ball neck is used exclusively for
attaching the trailer break away cable. You must
not attach a tow rope, a tow bar or anything simi‐
lar totheey elet. The eyelet has not been
designed for such a load and may tear. #
Shiftthe transmission toposition 005D. #
Apply theve hicle's parking brake. #
Close all the doors. 17 8
Driving and pa rking

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

#
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

Display messages
Possible causes/consequences and 0050 0050Solutions #
Fit wheels with suitable tyre pressure sensors.
The tyre pressure monitoring sy stem will switch on af ter a few
minutes of driving.
Tyre pressure monitor
inoperative *T
he tyre pressure monitoring sy stem is malfunctioning. #
Consult a qualified specialist workshop. Key
Display messages
Possible causes/consequences and 0050 0050Solutions
00AF
Key does not belong to
vehicle *Y
ou ha veinser ted an incor rect key into the ignition loc k. #
Use the cor rect key.
00AF
Remove key *T
hekey is in the ignition loc k. #
Remo vethekey.
00AF Replace key *T
hekey needs tobe replaced. #
Consult a qualified specialist workshop.
00AF
Change key batteries *T
hekey bat tery is dischar ged. #
Replace the battery (/ page 50). Ve
hicle Display messages
Possible causes/consequences and 0050 0050Solutions
Clutch overheated Avoid
pulling away Engage/
disengage clutch quickly
if req. *A
warning tone also sounds. The clutch is under heavy load and the
permissible operating temp erature of the clutch has been exceeded.
Av oid frequent pulling away and driving at walking pace overex ten‐
ded di stances. #
Stop in accordance with the tra ffic conditions. #
Secure theve hicle against rolling away. #
Leavethe engine running.
The clutch will cool more quickly when the engine is running.
or #
If possible, continue driving at a steady speed. #
Remo veyour foot from the clutch pedal and do not let the clutch
slip.
The clutch may also cool down during driving. 298
Display messages and warning and indicator lamps