2021 MERCEDES-BENZ V-CLASS MPV sensor

*
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 #
Comply with the activation conditions forAc tive Dis tance Assi st
DISTRONIC (/ page 162).
Active Distance Assist
Off *A
ctive Dis tance Assi stDISTRONIC has been deacti vated
( / page 162).
In theeve nt of a deacti vation not initia tedby the driver, a warning
to ne sounds as well.
Active Distance Assist
inoperative *A
warning tone also sounds. Active Dis tance Assi stDISTRONIC is
malfunctioning. In addition, BAS may ha vefailed. #
Consult a qualified specialist workshop.
Active Distance Assist
and Limiter inoperative *A
warning tone also sounds. Active Dis tance Assi stDISTRONIC and
th e limiter are malfunctioning. #
Consult a qualified specialist workshop.
Active Distance Assist
suspended *Y
ou are accelerating. Active Dis tance Assi stDISTRONIC does not
inter vene forth e duration of the acceleration process. #
Remo veyour foot from the accelerator pedal.
Ac tive Dis tance Assi stDISTRONIC will be acti vated again.
Active Distance Assist
currently unavailable
See Owner's Manual *A
warning tone also sounds.
Ac tive Dis tance Assi stDISTRONIC has been switched off and is
te mp orarily non-operational.
The following causes are possible:
R The function is impaired due toheavy rain or sno w.
R The radar sensor sy stem is temp orarily non-operational, e.g. due
to electromagnetic radiation close toTV orradio transmitting
st ations or other sources of radiation.
R The sy stem is outside the operating temp erature range.
R The on-board electrical sy stem voltage is too lo w.
If th e causes mentioned abo veno longer apply, the display message
will disappear and Active Dis tance Assi stDISTRONIC will be opera‐
tional again.
If th e display message does not disappear: #
Stop in accordance with the tra ffic conditions. #
Secure theve hicle against rolling away. #
Restart the engine.
Active Distance Assist
available again *A
ctive Dis tance Assi stDISTRONIC is operational again following
te mp orary non-availabilit y.Yo u can now swit chActive Dis tance
Assi stDISTRONIC on again (/ page 163).
Active Brake Assist Func-
tions limited See Own-
er's Manual *A
ctive Brake Assi stis una vailable due toa malfunction. #
Consult a qualified specialist workshop.
Active Brake Assist Func-
tions currently limited
See Owner's Manual *A
ctive Brake Assi stistemp orarily non-operational.
The following causes are possible:
R The sensors in the front bumper are dirty.
R The function is impaired due toheavy rain or sno w. 288
Display messages and warning and indicator lamps

Display messages
Possible causes/consequences and 0050 0050Solutions
R The radar sensor sy stem is temp orarily inoperative, e.g. due to
electromagnetic radiation emitted bynearby TVorradio stations
or other sources of electromagnetic radiation.
R The sy stem is outside the operating temp erature range.
R The on-board electrical sy stem voltage is too lo w.
If th e causes mentioned abo veno longer apply, the display message
will disappear and Active Brake Assi stwill be operational again.
If th e display message does not go out: #
Stop in accordance with the tra ffic conditions. #
Secure theve hicle against rolling away. #
Switch off the engine. #
Clean the sensors in the front bumper (/ page 229). #
Restart the engine.
Radar sensors dirty See
Owner's Manual *A
warning tone also sounds.
At least one of thefo llowing driving sy stems or driving saf ety sys‐
te ms is temp orarily non-operational or operational only on a restric‐
te d basis:
R Active Brake Assi st
R Blind Spot Assist
R Active Dis tance Assi stDISTRONIC
The following causes are possible:
R The sensors in thera diator grille and/or in the bumpers are
dirty.
R The function of the driving sy stem or driving saf ety sy stem is
impaired due toheavy rain or sno w.
If th e causes mentioned abo veno longer apply, the display message
will disappear and the driving sy stems or driving saf ety sy stems will
be operational again.
If th e display message does not disappear: #
Stop in accordance with the tra ffic conditions. #
Secure theve hicle against rolling away. #
Switch off the engine. #
Clean the sensors in thefo llowing places:
R Inthera diator grille
R Inthe front bumper
R Inthere ar bumper #
Restart the engine.
Limiter - - - km/h *T
he limiter cannot be activated while you ha vethe accelera tor pedal
depressed be yond the point of resis tance (ki ckdown). #
If conditions permit, drive at a speed greater than 30 km/h and
st ore the speed. Display messages and
warning and indicator lamps 289

Display messages
Possible causes/consequences and 0050 0050Solutions
Limiter passive *Y
ou ha vethe accelerator pedal depressed be yond the point of
re sis tance. Whilst you are accelerating, the limiter does not cont rol
yo ur speed. #
Remo veyour foot from the accelerator pedal. The limiter will be
re activated and will limit your speed.
Cruise control - - - km/h *A
n acti vation condition for cruise control has not been met.
Fo rex ample, you are aiming tostore a speed below 30 km/h. #
If conditions permit, drive at a speed greater than 30 km/h and
st ore the speed. #
Obser vethe activation conditions for cruise control
(/ page 159).
Cruise co ntrol and Lim-
iter inoperative *A
warning tone also sounds. Cruise control and the limiter are mal‐
functioning. #
Consult a qualified specialist workshop.
Blind Spot Assist not
available when towing a
trailer See Owner's Man-
ual *B
lind Spot Assist is switched off during trailer operation. #
Acknowled gethe display message with the0076 steering wheel
button.
Blind Spot Assist inoper-
ative *B
lind Spot Assist is malfunctioning. #
Consult a qualified specialist workshop.
Blind Spot Assist cur-
rently unavailable See
Owner's Manual *B
lind Spot Assist is temp orarily non-operational.
The following causes are possible:
R The function is impaired due toheavy rain or sno w.
R The radar sensor sy stem is temp orarily non-operational, e.g. due
to electromagnetic radiation close toTV orradio transmitting
st ations or other sources of radiation.
R The sy stem is outside the operating temp erature range.
If th e causes mentioned abo veno longer apply, the display message
will disappear and Lane Keeping Assist will be operational again.
If th e display message does not disappear: #
Stop in accordance with the tra ffic conditions. #
Secure theve hicle against rolling away. #
Switch off the engine. #
Restart the engine.
00C6
--- km/h *D
SR has been switched on but is not acti veas you are driving at a
speed greater than 18 km/h. If you drive at a speed below 18km/h,
DSR will au tomatically brake again tothe set speed.
00C6
Off *D
SRwas deactivated.
If it was not deactivated bythe driver, e.g. due toa malfunction of
th e ESP ®
, a warning tone also sounds. 290
Display messa ges and warning and indicator lamps

Display messages
Possible causes/consequences and 0050 0050Solutions &
WARNING Risk of an accident due toinsuf ficient tyre pres‐
sure
R The tyres can burs t.
R The tyres can wearexcessi velyand/or une venly.
R The driving characteristics as well as thesteering and brak‐
ing may be greatly impaired.
Yo u could then lose cont rol of theve hicle. #
Obser vethere commended tyre pressu res. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle without steering or braking suddenl y.Pa y atten‐
tion tothe tra ffic conditions. #
Secure theve hicle against rolling away. #
Check the tyres. If necessar y,replace the wheel (/ page 259). #
Check the tyre pressure. Cor rect the tyre pressure as neces‐
sary .
Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenl y.&
WARNING Risk of an accident from driving wi thaflat tyre
R The tyres can overheat and cause a fire.
R The driving characteristics as well as thesteering and brak‐
ing may be greatly impaired.
Yo u could then lose cont rol of theve hicle. #
Do not drive on with a flat tyre. #
Obse rveth e no tes on flat tyres. #
Stop theve hicle without steering or braking suddenl y.Pa y atten‐
tion tothe tra ffic conditions. #
Secure theve hicle against rolling away. #
Check the tyres. If necessar y,replace the wheel (/ page 259).
Tyre press. monitor cur-
rently unavailable *D
uetoa source of radio inter fere nce, no signals from the tyre pres‐
sure sensors are being received. The tyre pressure monitoring sys‐
te m is temp orarily malfunctioning.
The tyre pressure monitoring sy stem will restart automatically as
soon as the cause has been rectified.
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of at least one tyre.
The display is not showing any pressure value forth e tyre in ques‐
tion. #
Have thefa ulty tyre pressure sensor replaced at a qualified spe‐
cialist workshop.
Tyre pressure monitor
inoperative No wheel
sensors *T
he wheels fitted do not ha vesuitable tyre pressure sensors. The
tyre pressure monitoring sy stem is deactivated. Display messages and
warning and indicator lamps 297

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

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

Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
00B4
Fu elreser ve wa rning
lamp *The
yellow fuel reser ve wa rning lamp is on while the engine is run‐
ning.
The fuel supp lyhas dropped into there ser verange.
Ope ration of the auxiliary heating (s tationary hea ter) is deactivated in
th ere ser verange. #
Refuel theve hicle.
00AC
Coolant warning lamp *
The red coolant warning lamp is on while the engine is running and
th e coolant temp erature display is at thest art 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 too hot, the engine may be damaged. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. Do not continue driving! #
Secure theve hicle against rolling away. #
Consult a qualified specialist workshop.
00AC
Coolant warning lamp *T
he red coolant warning lamp is on while the engine is running.
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. #
Stop immediately in accordance with the traf fic conditions and
switch off the engine. #
Secure theve hicle against rolling away. #
Exit theve hicle and keep a safe dis tance from it until the engine
has cooled down. #
Check the coolant le vel and top up with coolant, complying with
th e instructions (/ page 225). #
Ifth e coolant has tobe topped up frequentl y,ha ve the engine
cooling sy stem checked at a qualified specialist workshop. #
Ensure that the air supply tothera diator is not impaired, e.g. by a
plastic bag that has been blown onto the grille. #
Monitor the coolant temp erature display on the instrument clus‐
te r. #
Do not restart the engine until the coolant temp erature is below
12 0°C. If you do, the engine may be damaged. #
Drive on tothe nearest qualified specialist workshop. Avoid high
engine loads, e.g. driving on hilly roads or stop-and-go driving.
00AC Coolant warning lamp *The
red coolant warning lamp is on while the engine is running. A
wa rning tone also sounds.
The coolant has exceeded thete mp erature of 120°C. The air supply
to thera diator may be impaired or the coolant le vel may be too lo w.
The engine has not been suf ficiently cooled and may be damaged. 308
Display messages and warning and indicator lamps