2021 MERCEDES-BENZ V-CLASS MPV engine overheat

#
Always switch thest ationary heater off
in enclosed spaces without an air
ex traction sy stems, e.g. in garage s. #
Keep theta ilpipe and the area around
th eve hicle free from snow when the
engine or thest ationary heater are run‐
ning. #
Open a window on the windward side of
th eve hicle toensure an adequate sup‐
ply of fresh air. &
WARNING Risk offire due tohot station‐
ary heater components and exhaust
ga ses
Flammable materials such as lea ves, grass or
twigs may ignite. #
When thest ationary heater is swit ched
on, make sure that:
R hot vehicle parts do not come into
contact with flammable materials.
R theex haust gas can flow out of the
st ationary heater exhaust pipe
unhindered.
R theex haust gas does not come into
contact with flammable materials. The heater
forth e auxiliary heating is fitted at the
front of theve hicle underbody. The emissions
outlet is on the left side of theve hicle below the
front door. &
WARNING Risk of poisoning duri ngwork
on the auxiliary warm-air hea ter
If wo rkon the heat exchanger of the auxiliary
wa rm-air hea ter is not per form ed cor rectl y,
ex haust fumes could leak into the passenger
compartment. #
Have all workon the auxiliary warm-air
hea ter car ried out at a qualified special‐
ist workshop. If
yo u are transpo rting hazardous materials, com‐
ply with there leva nt sa fety regulations. Place
objects a suf ficient dis tance from the auxiliary
heating outlet opening.
* NO
TEDama getothe auxiliary heating
due toove rheating If
th eflow of hot air is bloc ked, the auxiliary
heating may overheat and switch off. #
Do not block theflow of hot air. *
NO
TEBattery discharge caused bysta‐
tionary heater or stationary ventilation
ope ration Ope
rating thest ationary heater or stationary
ve ntilation drains the batter y. #
After heating or ventilating theve hicle
twice, drive for a longer period of time. Yo
ur vehicle may be equipped with either a hot-
wate r auxiliary heater or an auxiliary warm-air
hea ter.
The hot-water auxiliary heater is adjusted and
operated using the003B rock er switch on the cli‐
mate cont rol sy stem cont rol panel and via the
multimedia sy stem or byremo tecontrol.
The auxiliary warm-air heater is adjusted and
operated via the switch clock on the lo wer centre
console or byremo tecontrol Hot-water auxiliary heater
Fu
nction of the hot- water auxiliary hea ter
Obser vethe no tes on auxiliary heating
(/ page 126).
The hot-water auxiliary hea ter has a heater boos‐
te r,stationary heater and stationary ventilation
function. In addition, the auxiliary heating sy stem
heats the engine coolant toprotect the engine.
The stationary heater automatically adapts its
operating mode tochanges in outside temp era‐
ture and weather conditions. It is therefore possi‐
ble that thest ationary heater may swit chfrom
ve ntilation toheating mode or from heating to
ve ntilation mode.
The stationary heater will automatically swit ch
itself off af ter a maximum of 50 minutes. The
heater boos ter function helps toheat up theve hi‐
cle while the engine is running and at low outside
te mp eratures.
Yo u can set up tothre e departure times for pre-
entry clima tecontrol byremo tecontrol or via the
multimedia sy stem. The switch-on time is then
calculated based on the outside temp erature and
th e activated departure time. This means that
yo ur vehicle is preheated or precooled bythe set
departure time.
If th e departure time is reached and the engine is
not star ted, the auxiliary heating will continue to Climate cont
rol127

#
Avoid high engine speeds and driving at
full thro ttle until the engine has reached
its operating temp erature. Note
s on short-distance trips
If th eve hicle is predominantly used in short-dis‐
ta nce driving, a fault in the automatic cleaning
function of the diesel particulate filter can occur.
Due tothis, fuel may also accumulate in the
engine oil and cause engine failure.
During automatic cleaning, extreme lyhot exhaust
ga ses escape from theex haust pipe. Maintain a
dis tance of at least 1 m to other objects, e.g.
par kedve hicles, in order toavoid material dam‐
age.
If yo u main lydrive short dis tances, you should
drive on a mo torw ay or go for a country drive for
20 minutes every500 km. This facilitates the
re ge neration of the diesel particulate filter.
Information about driving abroad
Service
An extensive Mercedes-Benz service is also avail‐
able abroad. Ne vertheless, please remember that
services or spare parts may not be available
immediatel y.The releva nt wo rkshop directories
are available from a Mercedes-Benz Service
Cent re.
Fu el
In some countries, only fuels with an inc reased
sulphur con tent are available.
Uns uitable fuel can cause engine damage. Yo u
can find fur ther information under "Fuel"
(/ page 270).
Ad Blue ®
Ad Blue ®
is not available in suf ficient quality in all
countries. Therefore, check theAd Blue ®
leve l,
particular lybefore driving outside Europe
(/ page 148). Consul t aqualified specialist
wo rkshop for advice.
Yo u can find information about AdBlue ®
in "Oper‐
ating fluids and capacities" (/ page271).
Low beam
In countries in whi chtraf fic drives on the oppo‐
site side of thero ad from the count ryin which
th eve hicle is regis tere d, you will ha vetoswitch
th e headlamps tosymmetrical dipped beam. This
will pr event oncoming traf fic from being dazzled.
Symm etrical dipped beam will no longer illumi‐
nate the edge of the car riag ewa y as far or as
high. Ve
hicles with halogen headlamps:
It is not necessa ryto change the headlamps over
to symmetrical dipped beam. The statutory
requ irements of the count ries in which tra ffic
drives on the opposite side of thero ad from the
country in whi ch theve hicle is regis tere d are also
met without changing over.
Ve hicles with LED headlamps:
Yo u can set the low beam for driving on theright
or left via the on-board computer (/ page189).
Information about transport byrail
Tr ansporting your vehicle byrail may be subject
to cer tain restrictions or requ ire special meas‐
ures tobe take n in some countries due tovarying
tunnel heights and loading standards.
Yo u can obtain information about this from a
Mercedes-Benz Service Cent re.
Information on brakes &
WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may overheat.
This increases the braking dis tance and the
brake sy stem may evenfa il. #
Never use the brake pedal as a foot re st. #
Do not depress the brake pedal and the
accelerator pedal at the same time
while driving. *
NO
TECausing wearto the brake linings
by permanently depressing the brake
pedal #
Do not permanently depress the brake
pedal while driving. #
Touse braking ef fect of the engine, shift
to a lo werge ar in good time. Downhill
gradients
On long and steep downhill gradients you should
obse rveth efo llowing instructions:
R invehicles with an automatic transmission,
shift down toshift ranges 2or 1in good time
so that the engine is running at a medium to
high engine speed (/ page143).
R invehicles with a manual transmission, shift
down toa lo werge ar in good time, so that the
engine is running at a medium tohigh engine
speed. 13 8
Driving and pa rking

Af
terth e cooling phase, AIRMATIC is again
av ailable without restrictions. Re
fuelling Re
fuelling theve hicle &
WARNING Risk offire or explosion from
fuel
Fu els are highly flammable. #
Fire, naked flames, smoking and crea‐
tion of spar ksmust be avoided. #
Swit choff the ignition and, if available,
th est ationary heater, before and while
re fuelling theve hicle. &
WARNING Risk of injury from fuels
Fu els are poisonous and hazardous to your
health. #
Do not swallow fuel or let it come into
contact with skin,eyes or clo thing. #
Do not inhale fuel vapour. #
Keep children away from fuel. #
Keep doors and windo wsclosed du ring
th ere fuelling process.
If yo u or other people come into contact with
fuel, obser vethefo llowing: #
Immediately rinse fuel off your skin with
soap and water. #
If fuel comes into contact with your
ey es, immediately rinse them thor‐
oughly with clean water.Seek medical
attention immediately. #
Ifyo u swallow fuel, seek medical atten‐
tion immediatel y.Do not induce vomit‐
ing. #
Change immediately out of clo thing that
has come into con tact with fuel. &
WARNING Risk offire and explosion due
to electros tatic charge
Electros tatic charge can igni tefuel vapour. #
Before you open the fuel filler cap or
ta ke hold of the pump nozzle, touch the
me tallic vehicle body. #
Toavo id creating ano ther electros tatic
ch arge , do not getinto theve hicle again
during there fuelling process. &
WARNING Risk offire from fuel mixture
Ve hicles with a diesel engine:
If yo u mix diesel fuel with petrol, theflash
point of the fuel mixture is lo werth an that of
pure diesel fuel.
While the engine is running, component pa rts
in theex haust sy stem may overheat without
wa rning. #
Neverre fuel using petrol. #
Never mix petrol with diesel fuel. *
NO
TEDo not use diesel torefuel vehicles
with a petrol engine If
yo u ha veaccidentally refuelled with the
wrong fuel:
R do not swit ch the ignition on. Otherwise
fuel can enter the engine.
Even small amounts of the wrong fuel
could result in damage tothe fuel sy stem
and the engine. The repair costs are high. #
Consult a qualified specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. *
NO
TEDo not use petrol torefuel vehicles
with a diesel engine If
yo u ha veaccidentally refuelled with the
wrong fuel:
R do not swit ch the ignition on. Otherwise,
fuel can enter the fuel sy stem.
Even small amounts of the wrong fuel
could result in damage tothe fuel sy stem
and the engine. The repair costs are high. #
Consult a qualified specialist workshop. #
Have the fuel tank and fuel lines drained
comple tely. *
NO
TEDama getothe fuel sy stem caused
by ove rfilled fuel tanks #
Only fill th e fuel tank until the pump
nozzle switches off. Re
quirements
R The vehicle is unloc ked.
R The auxiliary heating is switched off. Driving and parking
147

#
Toactivate/deactivate: pressthe0076 but‐
to n.
The di stance warning function and the auton‐
omous braking function of Active Brake Assi st
are deactivated or activated.
When the functions are deactivated, the00D4
symbol appears in the Assis tance graphic in
th e multifunction displa y.
The next time theve hicle is star ted, Ac tive Brake
Assi stis automatically activated. Fu
nction of Adaptive Brake Lights Ad
aptive brake lights warnfollowing traf fic in an
emergency braking situation with th efo llowing
signals:
R Byflashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds
abo ve50 km/h, the brake lamps flash rapidl y.
This pr ovides traf fic tr ave lling behind you with an
eve n more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake applica‐
tion, the hazard warning lights switch on once the
ve hicle is stationar y.When pulling away again,
th e hazard warning lights switch off automatically
at appr oximately 10km/h.
Yo u can also swit choff the hazard warning lights
using the hazard warning button (/ page107). Cruise control and limiter
Fu
nction of cruise control
Cruise cont rol accelerates and brakes theve hicle
automatically in order tomaintain a pr eviously
st ored speed.
If yo u accelerate toove rtake, forex ample, the
st ored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal af terove rtaking,
cruise control will resume speed regulation back
to thestored speed.
Yo u operate cruise control using the cruise con‐
trol le ver.Yo u can store any speed abo ve
30 km/h.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 153). Sy
stem limits
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed if the uphill gradient evens out
and theve hicle's speed does not fall below
30 km/h.
On long and steep downhill gradients, you should
ch ange down toa lo werge ar in good time. Take
particular no teofthis when driving a laden vehi‐
cle. By doing so, you will make use of the
engine's braking ef fect. This will take some of the
st ra in off the brake sy stem and pr eventthe
brakes from overheating and wearing tooqu ickl y.
If yo uch ange wheel size on your vehicle, check it
is assigned tothe cor rect wheel size catego ry
( / page 258). If the category is changed without
re coding the cont rol units in theve hicle, the func‐
tioning of cruise cont rol may be impaired.
Do not use cruise control in thefo llowing situa‐
tions:
R in traf fic situations whe refrequent speed
ch anges are required, e.g. in heavy traf fic or
on winding roads
R off-road or on con stru ction sites
R on slippe ryor slick roads, as the drive wheels
can lose traction when accelerating and the
ve hicle can then skid
R ifth ere is poor visibility
Fu nction of the limiter
The limiter restricts the speed of theve hicle. To
adjust tothe set speed quickl y,the limiter applies
th e brakes automaticall y.
Yo u can limit the speed as follo ws:
R Variable: for speed restrictions, e.g. in built-
up areas.
R Perm anen t:for long-term speed restrictions,
e.g. when driving in winter tyre mode.
Yo u can operate theva riable limiter with the
cruise control le ver.Yo u can store any speed
abo ve30 km/h. You can also per form settings
while theve hicle is stationary if theve hicle has
been star ted.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 153).
If yo uch ange wheel size on your vehicle, check it
is assigned tothe cor rect wheel size catego ry
( / page 258). If the category is changed without
re coding the cont rol units in theve hicle, the func‐
tioning of the limiter may be impaired. 15 8
Driving and pa rking

Note
s on loading guidelines &
DANG ER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust
ga ses such as carbon monoxide. Exhaust
ga ses can enter theve hicle interior if theta il‐
gate is open when the engine is running,
especially if theve hicle is in motion. #
Always switch off the engine before
opening theta ilgate. #
Never drive with theta ilgate open. &
WARNING Risk of injury from unsecured
objects in theve hicle
When objects are unsecured or inadequately
secured, they can slip, tip over or be thro wn
about, striking vehicle occupants.
This also applies to:
R luggage or loads
R seats which ha vebeen remo ved and are
being transpor ted in theve hicle in an
exc eptional case
There is a risk of injur y,particularly in the
ev ent of braking manoeuvres or abrupt
ch anges in direction. #
Alwaysstow objects in such a wayth at
th ey cannot be tossed about. #
Before tr avelling, secure objects, lug‐
ga ge or load topreve ntthem slipping or
tipping over. #
When a seat is remo ved, keep it prefera‐
bly outside theve hicle. &
WARNING Risk of accident due toincor‐
re ctly positioned load
The centre of gr avity of the load can be too
high and/or toofa rto wa rdsth ere ar.
This can significantly impair handling as well
as steering and braking characteristics. #
Always make sure that the cent reof
gr av ity of the load is between the axles
and as low as possible near there ar
axle. &
WARNING Risk of accident due to
exc eeding the permissible wheel/axle
loads or the gross vehicle weight
The driving characteristics, as well as steering
and braking, may be greatly impaired. Over‐
loaded tyres may overheat and bur stas a
consequence. #
When transpo rting a load, alw ays
obser vethe permissible wheel loads,
axle loads and the maximum permissi‐
ble gross mass forth eve hicle (including
occupants). &
WARNING Risk of injury if unsuitable
climbing aids are used
In theev ent that you use openings in the
bodywork or attachments as steps, you
could:
R Slip and/or fall.
R Damage theve hicle and thus slip and fall. #
Always use non-slip, stable climbing
aids, e.g. a suitable ladder. *
NO
TEDama gecaused bythe use of
openings in the bodywork or de tach able
part as a step Using
the lo wer guide of the sliding door (car‐
ri age) as a step can damage the trim and/or
mechanism of the sliding door. #
Do not use the guide of the sliding door
(car riage) as a step. If
yo u are using a roof luggage rack , please no te
th e maximum roof load and the maximum load
capacity of thero of luggage rack ( /page 278).
The handling characteristics of your vehicle are
dependent on the load distribution.
Therefore, please obser vethefo llowing no tes
when loading:
R the load must not pr otru de abo vethe upper
edge of the seat backrests.
R if possible, alw ays transport the load in the
load compartment.
R fastenthe load tothe tie-down eyes and dis‐
tribute the load evenly among them. 212
Transporting

*
NO
TEDama gecaused byincor rect cool‐
ant #
Only add coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction. Information on coolant is
available at thefo llow‐
ing locations:
R inthe Mercedes-Benz Specification for Oper‐
ating Fluids 320.1
- at https://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop
* NO
TEOverheating at high outside tem‐
peratures If an inapp
ropriate coolant is used, the engine
cooling sy stem is not suf ficiently pr otected
against overheating and cor rosion at high out‐
side temp eratures. #
Always use coolant appr ovedby
Mercedes-Benz . #
Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 320. 1. *
NO
TEPaint wo rkdamage due tocoolant #
Do not spill coolant on painted sur fa‐
ces. Ha
ve the coolant regularly replaced at a qualified
specialist workshop.
No tethe proportion of anti-cor rosion agent/anti‐
freeze in the engine cooling sy stem within thefo l‐
lowing temp erature ranges:
R at least 50% (antifreeze pr otection up to
about -37°C)
R maximum 55% (antifreeze pr otection up to
-45°C)
Capacities, coolant
Coolant capacity Mode
lC apacity
All model sA pprox.10 .4 l
Appr ox.13 .4 l
on vehicles with auxil‐
iary heating Wi
ndscreen washer fluid Note
s on windscreen washer fluid
Obser vethe no tes on operating fluids
(/ page 269). &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndscreen washer concentrate is highly
fl ammable. It could ignite if it comes into con‐
ta ct with hot engine component parts or the
ex haust sy stem. #
Make sure that no windscreen washer
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids
which are also suitable for use on plas‐
tic sur faces, e.g. MB SummerFit or MB
Wi nterFit. *
NO
TEBlocked spr aynozzles caused by
mixing windscreen washer fluids #
Do not mix MB SummerFit and MB Win‐
te rFit with other windscreen washer flu‐
ids. Do not use distilled or de-ionised
water.Other‐
wise, thefill le vel sensor may give a false reading.
Re commended windscreen washer fluid:
R Abo vefreezing point: e.g. MB SummerFit
R Below freezing point: e.g. MB WinterFit
Fo rth e cor rect mixing ratio, referto the informa‐
tion on the anti-freeze container.
Mix thewa sher fluid with windsc reen washer fluid
all year round. Re
frigerant Note
s onrefrigerant
Obser vethe no tes on operating fluids
(/ page 269). Te
ch nical da ta275

Display messages
Possible causes/consequences and 0050 0050Solutions #
Ifyo u hear sc raping sounds, pull over and stop theve hicle
in accordance with the traf fic conditions, and set a higher
ve hicle le vel if possible. #
Drive in a manner appropriate forth e cur rent le vel, but do not
exc eed 80 km/h. #
Consult a qualified specialist workshop. Engine
Display messages
Possible causes/consequences and 0050 0050Solutions
003D
See Owner's Manual *A
warning tone also sounds.
The battery is no longer being charge dfo r one of thefo llowing rea‐
sons:
R defective alternator
R torn poly -Vbelt
R malfunction in the electronics #
Stop immediately in accordance with the traf fic conditions and
switch off the engine.
Do not continue driving. If you do, the engine may overheat. #
Secure theve hicle against rolling away. #
Consult a qualified specialist workshop.
003A
Clean the fuel filter *T
here is water inthe fuel filter. The water must be drained off. #
Consult a qualified specialist workshop.
00AC
Coolant Stop vehicle
Switch engine off *A
warning tone also sounds. The coolant is too hot. &
WARNING Risk of burn s when opening the bonn et
If yo u open the bonn etwhen the engine has overheated or when
th ere is a fire inthe engine compartment, thefo llowing situa‐
tions may occur:
R You could come into con tact with hotgases.
R You could come into con tact with other hot, escaping oper‐
ating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the
bonn etclosed and call thefire service. &
WARNING Risk of scalding from hot coolant
If yo u open the cap, you could be scalded. #
Letthe mo tor cool down before opening the cap. Display messages and
warning and indicator lamps 293

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