2021 MERCEDES-BENZ V-CLASS MPV check engine

#
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

*
NO
TEDama geand malfunctions caused
by impurities in AdBlue ® Impuri
ties in AdBlue ®
re sult in thefo llowing:
R higher emission values
R damage tothe catalytic con verter
R engine damage
R malfunctions in theAd Blue ®
ex haust gas
af te rtre atment sy stem #
Avoid impurities in AdBlue ®
. Ad
Blue ®
re sidue cr ystallises af ter some time and
st ain the af fected sur faces. Clean the dirty sur fa‐
ces wi thwate r as soon as possible.
If yo u open theAd Blue ®
tank, small amounts of
ammonia vapour may be released. Do not inhale
any ammonia vapours that may be released. Fill
th eAd Blue ®
tank only in well-ventilated areas.
Ad Blue ®
consu mption and filling capacity
Fi lling capacities
The total capacity of theAd Blue ®
tank may vary,
depending on theve hicle equipment.
To tal capacity of AdBlue ®
tank Ve
hicl eT otal capacity
All model s1 1.5 l,24 l or 25 l Ad
Blue ®
consu mption
Like fuel consu mption, AdBlue ®
consu mption is
highly dependent upon driving style and operat‐
ing conditions. AdBlue ®
consu mption is usually
wi thin a range of 0 and 5% of the fuel consump‐
tion. If necessar y,Ad Blue ®
must be refilled in
acco rdance with the instructions when there fill
message is displa yed in the instrument clus ter.
This may also be necessary between the sched‐
uled maintenance.
Check theAd Blue ®
fill le vel before making jour‐
ne ys outside of Europe.
Ad Blue ®
ra nge and fill le vel
The AdBlue ®
fill le vel and range can be displ ayed
via the on-board computer. The AdBlue ®
ra nge
shown depends strongly on the driving style and
operating conditions. The actual range can there‐
fo re deviate from thera nge cur rently displ ayed in
th e on-board computer. The information supplied
in the Owner's Manual rega rding there ser ve
qu antity at thefirs t displ aywarning in the multi‐ function display and on
the minimum top-up
qu antity when the fuel tank is empty is also tobe
under stood as guide values.
Display theAd Blue ®
ra nge and le vel
( / page 183). Engine oil
Note
s on engine oil
Obser vethe no tes on operating fluids
(/ page 269). *
NO
TEEngine damage caused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forthe
service inter vals. #
Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Have the engine oil rene we d at regular
inter vals. Mercedes-Benz
recommends having the oil
ch anged at a qualified specialist workshop.
Only Mercedes-Benz-appr oved engine oils may be
used in Mercedes-Benz engines.
Fu rther information on engine oil and oil filter:
R inthe Mercedes-Benz Specification for
Service Products at https://be vo.mercedes-
benz.co m (by en tering the designation)
R at a qualified specialist workshop Te
ch nical da ta273

Display messages
Possible causes/consequences and 0050 0050Solutions #
When opening the cap, wear pr otective glove s and saf ety
gl asses. #
Open the cap slowly torelease pressure. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. #
Monitor the coolant temp erature display 00AConthe instrument
clus ter. #
Wait until the engine has cooled down. #
Ensure that the air supply tothera diator is not obstructed. #
Avoiding high engine loads, drive on tothe nearest qualified spe‐
cialist workshop. In doing so, ensure that the coolant temp era‐
ture display remains below 120°C.
00AC *T
hefan mo tor is defective. #
Check the coolant temp erature display 00AConthe instrument
clus ter.
If th e coolant temp erature is below 120°C, you can continue driving
to the nearest qualified specialist workshop.
Av oid high engine loads, e.g. driving on hilly roads or stop-and-go
driving.
00BD
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* NO
TEEngine damage due toinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Top up with coolant, following the no tes on coolant
(/ page 225).
If yo u frequently need to top up the coolant: #
Have the engine cooling sy stem checked at a qualified specialist
wo rkshop.
009E
Replace air cleaner *T
he engine air filter is dirty and must be replaced. #
Consult a qualified specialist workshop.
00B2
Check eng. oil lev. when
next refuelling *A
warning tone also sounds. The oil le vel in your vehicle has fallen to
th e minimum.
* NO
TEEngine damage caused bydriving with insuf ficient
engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Che ckthe oil le vel when next refuelling, at the latest
(/ page 223). #
If necessar y,top up the engine oil (/ page 224). 294
Display messages and warning and indicator lamps

Display messages
Possible causes/consequences and 0050 0050Solutions
If engine oil frequently needs tobe topped up: #
Have the engine checked at a qualified specialist workshop.
00B2
Engine oil level Stop vehi-
cle Switch engine off *T
he oil le vel is too lo w.There is a risk of engine damage. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. #
Secure theve hicle against rolling away. #
Check the oil le vel (/ page 223). #
If necessar y,top up the engine oil (/ page 224).
00B4 Reserve fuel level *T
he fuel supply has dropped into there ser verange.
Ope ration of the auxiliary heating (s tationary hea ter) is deactivated
in there ser verange. #
Refuel theve hicle.
Ï *T
here is very little fuel in the fuel tank. #
It is absolutely essential torefuel at the nearest filling station. Ad
Blue ® Displ
aymessages
Possible causes/consequences and 0050 0050Solutions
00C8
Refill AdBlue See Own-
er’s Manual *
Awa rning tone also sounds. The AdBlue ®
leve l has fallen below the
re ser verange. #
Top up with AdBlue ®
as soon as possible (/ page 149).
00C8 Refill AdBlue Emer. oper.
in XXX km See Owner's
Manual *
Awa rning tone also sounds. The AdBlue ®
leve l is suf ficient only for
th e dis tance displ ayed. If you subse quently start the engine again,
yo u will be able todrive theve hicle only at a maximum speed of
20 km/h forth e dis tance shown. Engine mana gement will then pre‐
ve nt the engine from starting. #
Top up with AdBlue ®
immedia tely (/ page149).
00C8 Limp -home mode: 20
km/h No start ... km
See Owner's Manual. *
Awa rning tone also sounds. The AdBlue ®
tank is em pty. Yo u can
drive the dis tance shown at a maximum speed of 20 km/h. If you
subsequently switch off the engine, the engine management sy stem
will pr eventthe engine from being star ted again. You will then be
able tostart the engine only once you ha verefilled theAd Blue ®
ta nk. #
Stop theve hicle in accordance with the tra ffic conditions. #
Top up with AdBlue ®
immedia tely (/ page149). Displ
aymessa ges and warning and indicator lamps 295

Display messages
Possible causes/consequences and 0050 0050Solutions
00C8
Refill AdBlue Start not
possible *
Awa rning tone also sounds. The AdBlue ®
tank is em pty. Yo u can no
lon gerst art the engine. #
Top up with at least 8 l AdBlue ®
(/ page 149). #
Turn theke yto position 0048inthe ignition lock and waitfor
appr oximately one minute.
The engine can be restar ted once the engine management has
de tected the new le vel.
0099 AdBlue system Malfunc-
tion See Owner's Manual *
Awa rning tone also sounds. The AdBlue ®
sy stem is malfunctioning. #
Consult a qualified specialist workshop immediatel y.
0099 AdBlue malfunction
Emer. oper. in XXX km
See Owner's Manual *
Awa rning tone also sounds. The AdBlue ®
sy stem is malfunctioning.
The displa yed dis tance is the maximum you can drive. If you subse‐
qu ently start the engine again, you will be able todrive theve hicle
only at a maximum speed of 20 km/h forth e dis tance shown. Af ter
th at, the engine management sy stem will pr event the engine from
being star ted again. #
Consult a qualified specialist workshop immediatel y.
0099 Limp-home mode: 20
km/h No start ... km
See Owner's Manual. *
Awa rning tone also sounds. The AdBlue ®
sy stem is malfunctioning.
Yo u may continue todrive the displa yed dis tance at a maximum
speed of 20 km/h. If you subse quently switch off the engine, the
engine management sy stem will pr eventthe engine from being star‐
te d again. #
Drive on toaqu alified specialist workshop.
or #
Stop theve hicle in accordance with the tra ffic conditions and
consult a qualified specialist workshop.
0099 Refill AdBlue Start not
possible *
Awa rning tone also sounds. The AdBlue ®
sy stem is malfunctioning.
Yo u can no lon gerst art the engine. #
Inform a qualified specialist workshop immediately. Ty
res Display messages
Possible causes/consequences and 0050 0050Solutions
Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the dif fer‐
ence in tyre pressu rebetween the individual wheels is too great. #
Check the tyre pressure at the next opportunity . #
Correct the tyre pressure as necessar y. #
Restart the tyre pressure monitoring sy stem (/ page 255).
Check tyre(s) *A
warning tone also sounds.
The tyre pressure in one or more tyres has dropped significantl y.296
Display messages and warning and indicator lamps

Display messages
Possible causes/consequences and 0050 0050Solutions
Cooling down can take afe w minutes. When the clutch has cooled
down, the display message will disappear and the clutch will be fully
operational again.
Ò *T
hetailgate is open. #
Close theta ilgate.
Ó *A
warning tone also sounds. The bonnet is open. &
WARNING Risk of accident due todriving with the bonn et
unlo 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. #
Stop theve hicle immediately in accordance with the traf fic con‐
ditions. #
Secu retheve hicle against rolling away. #
Close the bonn et.
0051 *I
n addition, a warning tone sounds du ring the trip.
The display sho ws the open door or doors. #
Close all the doors.
00B2
Top up washer fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped
below the minimum. #
Top up thewa sher fluid (/ page 226).
00CC Power steering malfunc-
tion See Owner's Manual *A
warning tone also sounds. The po wer assi stance forth esteering
could be malfunctioning. You may need tosteer more forc efully. #
Carefully continue toaqu alified specialist workshop and ha ve
th esteering checked immediatel y.
Telephone No service *Y
our vehicle is outside the transmission and receiver range of the
mobile phone network pr ovider.
To start engine, shift to
either P or N *
Yo u ha veattem pted tostart the engine in transmission position 005E
or 005B. #
Shift the transmission toposition 005Dor005C.
Auxiliary battery malfunc-
tion *T
he auxiliary batteryforth e transmission is no longer being
ch arge d. #
Consult a qualified specialist workshop.
Apply brake to deselect
Park (P) position *
Yo u ha vetried toshift the transmission toposition 005B,005Eor005C
without applying the brake. #
Depress the brake pedal. Display messages and
warning and indicator lamps 299

Display messages
Possible causes/consequences and 0050 0050Solutions
0049
AUTO lights inoperative *T
he light sensor is faulty. The automatic driving lights are malfunc‐
tioning. #
Swit chthe light functions on/off manually (/page105). #
Consul t aqualified specialist workshop.
Intell. Light System inop-
erative *T
he Intelligent Light Sy stem is malfunctioning. The lighting sy stem
re mains available without the Intelligent Light Sy stem functions. #
Consult a qualified specialist workshop.
0049
Malfunction See Own-
er's Manual *T
heexterior lighting is malfunctioning. #
Consult a qualified specialist workshop. Wa
rning and indicator lamps Indicator and
warning lamps on the instru‐
ment clus ter Some sy
stems will per form a self-test when the
ignition is switched on. Some indicator and warn‐
ing lamps may briefly light up or flash. This
behaviour is non-c ritical. These indica tor and
wa rning lamps indicate a malfunction only if they
light up or flash af terth e engine has been star ted
or during a journe y. Saf
ety sy stems Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
0075
Re stra int sy stem warning
lamp *The
redwa rning lamp forth ere stra int sy stem is on while the engine
is running.
The restra int sy stem is malfunctioning. &
WARNING Risk of injury duetomalfunctions in there stra int
sy stem
Components in there stra int sy stem may be activated unintention‐
ally or not deploy as intended in an accident. #
Have there stra int sy stem checked and repaired immediately
at a qualified specialist workshop. #
Pay attention tothe display messages. #
Drive on carefull y. #
Have there stra int sy stem and its components checkedby aqu ali‐
fi ed specialist workshop immediately.
Fu rther information on there stra int sy stem and its components can
be found under "Occupant saf ety". 302
Display messages and warning and indicator lamps