check engine MERCEDES-BENZ V-CLASS 2021 User Guide

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

#
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

one
that does not comply with the speci/cations of
th ese operating inst ructions.
* N
NO OTE
TE Damage caused byadditives in
Ad Blue ®
or by diluting AdBlue ® The
AdBlue ®
ex haust gas aTertreatment sys-
te m could be dest roye dby thefo llowing:
R additives in AdBlue ®
R diluting AdBlue ® #
Only use AdBlue ®
in acco rdance with
ISO 22241. #
Do not mix additives. #
Do not dilu teAd Blue ®
. *
N
NOOTE
TE Dama geand malfunctions caused
by impurities in AdBlue ® Impurities in
AdBlue ®
result in thefo llowing:
R higher emission values
R damage tothe catalytic con verter
R engine damage
R malfunctions in theAd Blue ®
ex haust gas
aTertreatment system #
Avoid impurities in AdBlue ®
. Ad
Blue ®
residue cr ystallises aTer some time and
stain the a.ected sur faces. Clean the dirty sur fa-
ces with water 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.
A
A dBlue
dBlue ®
®
consump
consump tion and
tion and/lling
/llingcapacity
capacity
F
F illing capacities
illing capacities
The tota l capacity of theAd Blue ®
tank may vary,
depending on theve hicle equipment.
Tot
Tot al capacity of A
al capacity of A dBlue
dBlue®
®
t
tank
ank V
V
ehicle Tot
ehicle Total capacity
al capacity
All model s1 1.5 litres, 24 litres or
25 litres A
A
dBlue
dBlue ®
®
consump
consump tion
tion
Like fuel consum ption, AdBlue ®
consu mption is
high lydependent upon driving style and operating
conditions. AdBlue ®
consu mption is usually within
a ra nge of 1 and 5% of the fuel consum ption. If necessar
y,Ad Blue ®
must be re/lled in acco rdance
with the inst ructions when there /ll message is dis-
pla yed in the inst rument cluster. This may also be
necessary between the scheduled maintenance.
Check theAd Blue ®
/ll le vel before making jour-
ne ys outside of Europe.
A
A dBlue
dBlue ®
®
r
rang
ang e and
e and /ll
/lllev
level
el
The AdBlue ®
/ll le vel and range can be displa yed
via the on-board computer. The AdBlue ®
range
sh ow n depends strongly on the driving style and
operating conditions. The actual range can there-
fo re deviate from thera nge cur rently displa yed in
th e on-board computer. The information given in
th e operator's manual in display messages rega rd-
ing there ser vequantity and the minimum top-up
qu antity when the fuel tank is em pty is also tobe
understood as guide values.
Display theAd Blue ®
range and le vel
( / page 184). Engine oil
Engine oil N
No ot
tes on engine oil
es on engine oil
Obser vethe no tes on operating 0uids
(/ page 271). *
N
NOOTE
TE Engine damage caused byan inco r-
re ct oil /lter, incor rect oil or additi ves #
Do not use engine oils or oil /lters other
th an those which meet the speci/cations
necessary forth e prescribed service
inter vals. #
Do not alter the engine oil or oil /lter in
order toachie velonger change inter vals
th an prescribed. #
Do not use additives. #
Have the engine oil changed aTer the
prescribed inter vals. Mercedes-Benz
recommends having the oil
ch anged at a quali/ed specialist workshop. Te
ch nical data
275
275

Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Monitor the coolant temp erature display ?onthe inst rument
cluster. #
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 quali/ed spe-
cialist workshop. In doing so, ensu rethat the coolant temp erature
display remains below 120°C.
? *T
hefan mo tor is defective. #
Check the coolant temp erature display ?onthe inst rument
cluster.
If th e coolant temp erature is below 120°C, you can continue driving
to the nearest quali/ed specialist workshop.
Av oid high engine loads, e.g. driving on hilly roads or stop-and-go driv-
ing.
+ Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Top up with coolant, following the no tes on coolant
(/ page 228).
If yo u frequently need to top up the coolant: #
Have the engine cooling system checked at a quali/ed specialist
wo rkshop.
¸
Replace air cleaner *T
he engine air /lter is dirty and must be replaced. #
Consult a quali/ed specialist workshop.
4 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.
* N NOOTE
TE Engine damage caused bydriving with insu1cient
engine oil #
Avoid long journe yswith insu1cient engine oil. #
Check the oil le vel when next refuelling, at the latest
(/ page 226). #
If necessar y,top up the engine oil (/ page 227).
If engine oil frequently needs tobe topped up: #
Have the engine checked at a quali/ed specialist workshop. 296
296
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
4 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 theve hicle immediately in accordance with the tra1c condi-
tions and switch it o.. #
Secure theve hicle against rolling away. #
Check the oil le vel (/ page 226). #
If necessar y,top up the engine oil (/ page 227).
6 Reserve fuel level *T
he 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.
Ï *T
here is very little fuel in the fuel tank. #
It is absolutely essential torefuel at the nearest /lling station. A A
dBlue
dBlue ®
® Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Ø
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 148).
Ø Refill AdBlue Emer. oper.
in XXX km See Owner's
Manual *
Awa rning tone also sounds. The AdBlue ®
leve l is su1cient only for
th e distance displa yed. If you subsequently start the engine again, you
will be able todrive theve hicle only at a maximum speed of 20 km/h
fo rth e distance shown. Engine management will then pr event the
engine from starting. #
Top up with AdBlue ®
immediately (/ page 148).
Ø
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
th e distance shown at a maximum speed of 20 km/h. If you subse-
qu ently switch o. the engine, the engine management system will
pr eve ntthe engine from being star ted again. You will then be able to
start the engine only once you ha vere/lled theAd Blue ®
tank. #
Stop theve hicle in accordance with the tra1c conditions. #
Top up with AdBlue ®
immediately (/ page 148).
Ø
Refill AdBlue Start not
possible *
Awa rning tone also sounds. The AdBlue ®
tank is em pty. Yo u can no
longer start the engine. #
Top up with at least 8 l AdBlue ®
(/ page 148). #
Turn theke yto position 2inthe 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. Display message
s andwarning and indicator lamps
297 297

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