2021 MERCEDES-BENZ V-CLASS check engine

Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
¯ AdBlue system Malfunc-
tion See Owner's Manual *
Awa rning tone also sounds. The AdBlue ®
system is malfunctioning. #
Consult a quali/ed specialist workshop immediatel y.
¯ AdBlue malfunction
Emer. oper. in XXX km
See Owner's Manual *
Awa rning tone also sounds. The AdBlue ®
system is malfunctioning.
The displa yed distance 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 distance shown. ATer
th at, the engine management system will pr eventthe engine from
being star ted again. #
Consult a quali/ed specialist workshop immediatel y.
¯ Limp-home mode: 20
km/h No start ... km
See Owner's Manual. *
Awa rning tone also sounds. The AdBlue ®
system is malfunctioning.
Yo u may continue todrive the displa yed distance at a maximum speed
of 20 km/h. If you subsequently switch o. the engine, the engine
management system will pr event the engine from being star ted again. #
Drive on toaqu ali/ed specialist workshop.
or #
Stop theve hicle in accordance with the tra1c conditions and con-
sult a quali/ed specialist workshop.
¯
Refill AdBlue Start not
possible *
Awa rning tone also sounds. The AdBlue ®
system is malfunctioning.
Yo u can no longer start the engine. #
Inform a quali/ed specialist workshop immediatel y. T T
yr
yr es
es Displa
Displa y messag
y messag es P
es P ossible causes/conseq
ossible causes/conseq uences and
uences andM
M Solutions
Solutions
Rectify tyre pressure *The tyre pressure is too low in at least one of the tyres, or the di.er-
ence in tyre pressure between the individual wheels is toogr eat. #
Check the tyre pressure at the next opportunity (/ page 258). #
Correct the tyre pressure as necessar y. #
Restart the tyre pressure monitoring system (/ page 258).
Check tyre(s) *Awarning tone also sounds.
The tyre pressure in one or more tyres has dropped signi/cantl y.&
W
WARNI NG
ARNI NGRisk of an accident due toinsu1cient tyre pres-
sure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking
may be greatly impaired. 298
298
Display messages and
warning and indicator lamps

Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Ó *A
warning tone also sounds. The bonnet is open. &
W
WARNI NG
ARNI NGRisk of accident due todriving with the bonnet
unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine bonnet is loc ked. #
Stop theve hicle immediately in accordance with the tra1c condi-
tions. #
Secure theve hicle against rolling away. #
Close the bonnet.
C *I
n addition, a warning tone sounds during the trip.
The display sho ws the open door or doors. #
Close all the doors.
¥
Top up washer fluid *T
hewasher 0uid le vel in thewa sher 0uid reser voir has dropped below
th e minimum. #
Top up thewa sher 0uid (/ page 229).
Ð Power steering malfunc-
tion See Owner's Manual *A
warning tone also sounds. The po wer assistance forth e steering
could be malfunctioning. You may need tosteer mo reforc efull y. #
Carefully continue toaqu ali/ed specialist workshop and ha vethe
stee ring checked immediatel y.
Telephone No service *Your vehicle is outside the transmission and receiver range of the
mobile phone network pr ovider.
To start engine, shift to
either P or N *Y
ou ha veattem pted tostart theve hicle in transmission position kor
h. #
ShiT the transmission toposition jori.
Auxiliary battery malfunc-
tion *T
he auxiliary battery forth e transmission is no longer being charge d. #
Consult a quali/ed specialist workshop.
Apply brake to deselect
Park (P) position *Y
ou ha vetried toshiT the transmission toposition h,kori with-
out applying the brake. #
Depress the brake pedal.
Apply brake to select R *You ha vetried toshiT the transmission toposition kwithout appl y-
ing the brake. #
Depress the brake pedal. #
ShiT the transmission position tok .
N permanently active
Risk of vehicle rolling *A
warning tone also sounds. While theve hicle is rolling or driving, the
transmission was shiTed toposition i. #
Tostop, depress the brake pedal and, when theve hicle is at a
standstill, shiT the transmission toposition j. Display messages and
warning and indicator lamps
301 301

V
V
ehicle
ehicle W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Ð Po we r steering system
wa rning lamp *The
red po wer steering warning lamp is on while theve hicle is on. A
wa rning tone also sounds.
The po wer assistance forth e steering could be malfunctioning. You may
need tosteer mo reforc efull y. #
Carefully continue toaqu ali/ed specialist workshop and ha vethe
stee ring checked immediatel y. Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
; Engine diagnostics warn-
ing lamp *The
yellow engine diagnostics warning lamp is on while theve hicle is
on.
There may be a malfunction in thefo llowing vehicle systems:
R Engine management
R Injection
R Exhaust system
R Ignition system (in vehicles with a petrol engine)
R Fuel system
This can cause the emissions limit values tobe exceeded and the
engine torun in eme rgency mode. #
Have theve hicle checked immediately at a quali/ed specialist work-
shop.
6
Fu elreser vewarning lamp *T
he yellow fuel reser vewarning lamp is on while theve hicle is on.
The fuel supply has dropped into there ser verange.
Ope ration of the auxiliary heating (stationary heater) is deactivated in
th ere ser verange. #
Refuel theve hicle.
?
Coolant warning lamp *The
red coolant warning lamp is on while theve hicle is running and the
coolant temp erature display is at the start of the scale.
The temp erature sensor forth e coolant temp erature display is defec-
tive.
The coolant temp erature is no longer being monitored. If the coolant is
to o hot, the engine may be damaged. #
Stop theve hicle immediately in accordance with the tra1c condi-
tions and switch it o.. Do not continue driving! #
Secure theve hicle against rolling away. #
Consult a quali/ed specialist workshop.
? Coolant warning lamp *T
he red coolant warning lamp is on while theve hicle is on.
The coolant le vel is too lo w.
If th e coolant le vel is cor rect, the air supply tothera diator may be
impaired or thera diator's electric fan may be faulty.
The coolant is too hot and the engine is not being adequately cooled. #
Pay attention tothe display messages. Display messages and
warning and indicator lamps
309 309

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Stop theve hicle immediately in accordance with the tra1c condi-
tions and switch it o.. #
Secure theve hicle against rolling away. #
Exit theve hicle and keep a safe distance from it until the engine has
cooled down. #
Check the coolant le vel and top up with coolant, complying with the
inst ructions (/ page 228). #
Ifth e coolant has tobe topped up frequentl y,ha ve the engine cool-
ing system checked at a quali/ed specialist workshop. #
Ensure that the air supply tothera diator is not impaired, e.g. by a
plastic bag that has been blown onto thegr ille. #
Monitor the coolant temp erature display on the inst rument cluster. #
Do not restart the engine until the coolant temp erature is below
120°C. If you do, the engine may be damaged. #
Drive on tothe nearest quali/ed specialist workshop. Avoid high
engine loads, e.g. driving in mountainous terrain or stop-and-go
driving.
?
Coolant warning lamp *The
red coolant warning lamp is on while theve hicle is on. A warning
to ne also sounds.
The coolant has exceeded thete mp erature of 120°C. The air supply to
th era diator may be impaired or the coolant le vel may be too lo w.
The engine has not been su1cient lycooled and may be damaged. &
W
WARNING
ARNING Risk of burns when opening the bonnet
If yo u open the bonnet in theev ent of an overheated engine or /re
in the engine compartment, thefo llowing situations may occur:
R You may come into contact with hot gases.
R You may come into contact with other escaping hot operating
0uids. #
Before opening the bonnet, allow the engine tocool down. #
Intheev ent of a /re in the engine compartment, keep the
bonnet closed and call the /re service. #
Pay attention tothe display messages. #
Stop theve hicle immediately in accordance with the tra1c condi-
tions and switch it o.. #
Secure theve hicle against rolling away. #
Exit theve hicle and keep a safe distance from it until the engine has
cooled down. #
Check the coolant le vel and top up with coolant, complying with the
inst ructions (/ page 228). #
Ifth e coolant has tobe topped up frequentl y,ha ve the engine cool-
ing system checked at a quali/ed specialist workshop. #
Ensure that the air supply tothera diator is not impaired, e.g. by a
plastic bag that has been blown onto thegr ille. 310
310
Display message
s andwarning and indicator lamps

W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Monitor the coolant temp erature display on the inst rument cluster. #
Ifth e coolant temp erature is below 120°C, you can continue driving
to the nearest quali/ed specialist workshop. #
In doing so, avoid high engine loads, e.g. driving in mountainous ter-
ra in or stop-and-go driving. T
T
yr
yr es
es W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
h Ty re pressure monitoring
system warning lamp *The
yellow tyre pressure monitoring system warning lamp (pressure
loss/malfunction) is on.
The tyre pressure monitoring system has de tected a loss of pressure in
at least one tyre. &
W
WARNING
ARNING Risk of an accident due toinsu1cient tyre pressure
R The tyres can burst.
R The tyres can wearexcessively and/or une venly.
R The driving characteristics as well as the steering and braking
may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle without steering or braking sudden ly.Pa y attention
to the tra1c conditions. #
Secure theve hicle against rolling away. #
Pay attention tothe display messages. #
Check the tyres and, if necessar y,replace the wheel (/ page 261). #
Check the tyre pressure.
In vehicles with steering-wheel buttons, you can check the tyre pressure
electronically (/ page 258). #
Correct the tyre pressure as necessar y.
h Ty re pressure monitoring
system warning lamp *The
yellow tyre pressure monitoring system warning lamp (pressure
loss/malfunction) 0ashes for appr oximately one minute and then
re mains lit.
The tyre pressure monitoring system is malfunctioning. &
W
WARNING
ARNING There is a risk of an accident if the tyre pressure
monitoring system is malfunctioning
The tyre pressure monitoring system cannot issue a warning if there
is pressure loss in one or more of the tyres.
Ty res with insu1cient tyre pressure may impair the driving charac-
te ristics as well as steering and braking. #
Have the tyre pressure monitoring system checked at a quali-
/ed specialist workshop. Display messages and
warning and indicator lamps
311
311

Electr
Electr
omagne
omagne tic com
tic com patibility
patibility
Declaration of conformity..................... .19
Electr
Electr onicSt
onic Stability Pr
ability Pr ogr
ogram
am
see ESP ®
(Elect ronic Stability Prog ram)
Electr
Electr onics
onics................................................ 269
Emerg
Emerg ency
ency
Fire extinguisher................................. 235
Fi rs t-aid kit (soT-sided)....................... 235
Re moving thewa rning triangle............ 235
Saf etyve st.......................................... 235
Setting up thewa rning triangle............ 235
Emerg
Emerg ency br
ency br aking
aking
Electric parking brak e......................... 152
Emerg
Emerg ency call
ency call
see Mercedes-Benz emer gency call system
Eme rg
Emerg encykey
ency key
Locking a door...................................... 55
Unlocking a door................................... 55
Emerg
Emerg encyke
ency key element y element
Re moving/inserting............................. .52
Eng
Eng ag
agerev
e rev er
erse g
se g ear
ear.................................. 142
Eng
Eng aging dr
aging dr iv
ive position (aut
e position (aut omatic
omatic
tr
tr ansmission)
ansmission)............................................ 143
Eng
Eng aging neutr
aging neutr al (aut
al (automatic tr
omatic tr ansmis-
ansmis-
sion)
sion)......................................................... 142
Engine
Engine
ECO start/s top function.................... .139
Engine number....................................2 70
St arting assis tance............................. 240
Engine electr
Engine electr onics (not
onics (notes
es.......................... 269
Engine number
Engine number .......................................... 270
Engine oil
Engine oil
Additive.............................................. 275
Checking the oil le vel using the on-
board computer..........................2 25, 226
Checking the oil le vel with a dipstic k... 226
Fi lling capacity.................................... 276
To pping up.......................................... 227
Engine output
Engine output
Notes on changes................................. 24
Engine pr
Engine pr e-heating
e-heating
see Auxiliary heating
En
En vir
vironment
onment al prot
al pr otection
ection
No tes................................................... .16
Ta ke -back of end-of-life vehicles............ 16
ERA
ERA -GL
-GLON
ONASS tASS t es
est mode
t mode
St arting/ending................................. .238
ESC (Electr
ESC (Electr onicSt
onic Stability Contr
ability Contr ol)
ol)
see ESP ®
(Elect ronic Stability Prog ram) ESP
ESP
®
®
Crosswind Assis t................................. 154
Tr ailer stabilisatio n.............................. 155
ESP
ESP ®
®
(Electr
(Electronic St
onic Stability Pr
ability Pr ogr
ogram)
am)
Ac tivating/deactivating (on-board
computer)........................................... 154
Fu nction/no tes................................... 153
Switching on/o. (button)................... .154
Ext Ext er
erior lighting
ior lighting
Care...................................................2 32
Ext
Ext er
erior lighting
ior lighting
see Lights F
F
F
F atigue det
atigue det ection
ection
see ATTENTION ASSIST
F
F ault messa ge
ault message
see Displ aymessage
F F illing up t illing up t he windscr
he windscr een w
een w ashing sy
ashing sy s-
s-
t
t em
em ........................................................... 229
F
F ir
ir e e
e e xtinguisher
xtinguisher ....................................... 235
F
F irs
irst-aid kit t-aid kit (soT-sided)
(soT-sided) ............................. 235
Flat tyre
Flat tyre Changing a wheel................................ 261
Notes................................................ .238
F
F og light (e og light (e xt
xtended r
ended r ang
ange)
e)......................... 110
F
F oil cov
oil cov er
ering
ing
Ra dar and ultrasonic sensor s.............. 152
F
F olding t
olding t able
able
Fi tting/removing................................. 100
Moving............................................... 100
Using.................................................. 102
F F or
or eign tr
eign tr ip
ip
Symmetrical dipped bea m................... 107
Fr
Fr ee
ee soTw
soTw are
are..............................................28
Fr
Fr eq
eq uencies
uencies
Mobile phone...................................... 269
Tw o-w ayradio.................................... .269
Fr Fr ont airbag (dr
ont airbag (dr iv
iver
er , co-dr
, co-dr iv
iver)
er) .................... .33
Fr
Fr ont seats
ont seats
Ro tating................................................ 76
Fr Fr ont wheel ar ch
ont wheel ar ch
Fi tting/removing the co ver.................. 114
Wi ng................................................... 114
F
F uel uel
Additives............................................. 272
Diesel................................................ .273
E10....................................................2 72
Flexible fuel vehicles........................... 272 Index
319
319

V
V
ehicle sensors
ehicle sensors
Information.........................................1 52
V
V ehicle t
ehicle t ool kit
ool kit
Information......................................... 250
Jack.................................................... 250
St ow age compartment in there ar...... .250
To wing eye.......................................... 249
VIN
VIN
Identi/cation plate.............................. 270
Reading out....................................... .270
Seat................................................... 270
Wi ndsc reen.........................................2 70
V
V ision ision
Demisting windo ws............................. 127 W
W
W
W ar
ar ning syst
ning syst em
em
see ATA (Anti-TheT Alarm system)
W
W ar
ar ning tr
ning tr iangle
iangle
Re moving............................................ 235
Setting up........................................... 235
W
W ar
ar ning/indicat
ning/indicat or lamp
or lamp
! ABSwarning lamp...................... 306
J Brake system warning lamp
.................................................. 304, 305
? Coolant warning lamp........ 309, 310
; Engine diagnostics warning
lamp...................................................3 09
å ESP®
OFF warning lam p............. 307
÷ ESP®
wa rning lamp.................... 306
6 Fuelreser vewarning lamp.........3 09
! Indicator lamp for parking
brake.................................................. 307
Ð Power steering system warn-
ing lamp.............................................3 09
6 Restraint system warning lam p... 304
ü Seat belt warning lamp...... 307, 308
h Tyre pressure monitoring sys-
te m wa rning lamp............................... 311
· Warning lamp for distance
wa rning function................................. 308
PA SSENGER AIR BA G............................ 36
W
W ar
ar ning/indicat
ning/indicat or lam
or lamps
ps
No tes................................................ .304
Overview................................................. 7
W
W arr
arr anty
anty.....................................................25 W
W
asher
asher 0uid
0uid
see Windsc reen washer 0uid
W
W ashing b
ashing b y hand (car
y hand (car e)
e)............................. 231
W
W ashing t
ashing t he engine
he engine ................................... 230
W
W eat
eat her inf
her inf or
ormation
mation ................................. .206
W
W eb brow
eb brow sers
sers
Overview............................................2 10
Wheel rot
Wheel rotation
ation .......................................... 260
Wheels
Wheels Care.................................................. .232
Changing............................................ 260
Checking............................................ 252
Checking the tyre pressure (tyre
pressure monitoring system)............... 258
Fi tting................................................. 263
Flat tyre.............................................. 238
Noise.................................................. 252
No tes on /tting................................... 258
Re moving............................................ 263
Re placing.................................... 258, 261
Re starting the tyre pressure monitor... 258
Selection............................................ 258
Snow chains....................................... 253
St oring................................................ 261
Te ch nical dat a..................................... 264
Ty re pressure (No tes).......................... 253
Ty re pressure monitoring system
(function)............................................ 257
Ty re pressure table............................ .254
Unusual driving characteristics............ 252
Wheel size catego ries......................... 260
Wheel/tyre combination.....................2 64
Wheels (car
Wheels (car e) e)............................................ 232
W
W i-Fi
i-Fi
Setting................................................ 200
W
W indo
indo w airbag
w airbag............................................ 33
W
W indo
indo w
wliTer
liTer
see Side windo ws
W
W indo ws
indo ws
see Side wind ows
W
W indow
indow s (car
s (care)
e) ......................................... 232
W
W indscr
indscr een
een
Demisting...........................................1 27
Re placing the wiper blades.................. 118
W
W indscr
indscr een
een
see Windsc reen
W
W indscr
indscr een w
een washer
asher 0uid
0uid........................... 277
W
W indscr
indscr een wipers
een wipers
Re placing the wiper blades.................. 118
Switching on/o.................................. 118 330
330
Index