2021 MERCEDES-BENZ V-CLASS sensor

R
Use only automatic car washes that meet cur-
re nt tech nological standa rds.
R Do not use a wash prog ram that ends with a
hot wax treatment in automatic car washes.
R Do not use paint cleaners, bu1ng or polishing
products, or gloss preser vers, e.g. wax.
R Always ha vepaintwork repairs car ried out at a
qu ali/ed specialist workshop. N
No
ot
tes on t
es on t he car
he care of v
e of vehicle par
ehicle par ts
ts &
W
WARNING
ARNING Risk of injury if unsuitable
climbing aids are used
In theev ent that you use openings in the body-
wo rkor 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. &
W
WARNING
ARNING Risk of ent rapment if the wind-
screen wipers are switched on while the
windscreen is being cleaned
If th e windscreen wipers are set in motion
while you are cleaning the windscreen or wiper
blades, you can be trapped bythe wiper arm. #
Always switch o. the windscreen wipers
and the ignition before cleaning the wind-
screen or wiper blades. &
W
WARNING
ARNING Risk of burns from theta ilpipe
and tailpipe trims
The exhaust tailpipe and tailpipe trims can
become very hot. If you come into contact with
th ese parts of theve hicle, you could burn your-
self. #
Always be particular lycareful around the
ta ilpipe and theta ilpipe trims and super-
vise children especially closely in this
area. #
Allow vehicle parts tocool down before
to uching them. *
N NOOTE TE Damage caused bythe use of open-
ings 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. %
Information on suitable cleaning agents or
cleaning clo ths can be obtained from a quali-
/ed specialist workshop.
To prev ent damage totheve hicle, obser vethe
no tesfo r cleaning and care of thefo llowing vehicle
parts:
Wheels and r Wheels and r ims
ims
R Use water and acid-free alloy wheel cleaner.
R Do not use acidic alloy wheel cleaners to
re mo vebrake dust. Otherwise, wheel bolts and
brake components could be damaged.
R Toavo id cor rosion of brake discs and brake-
pads, drive for a few minutes aTer cleaning
before parking theve hicle. The brake discs and
brakepads warm up and dry out.
W
W indo ws
indo ws
R Clean the windo wsinside and outside with a
damp clo thand with a cleaning agent recom-
mended for Mercedes-Benz.
R Do not use dry clo ths, abrasive cleaning agents
or cleaners containing sol vents toclean the
inside of windo ws.
W
W iper blades
iper blades
R With th e wiper arms folded away,clean the
wiper blades with a damp clo th (/ page 118).
R Do not clean the wiper blades too oTen.
Ext
Ext er
erior lighting
ior lighting
R Clean the lenses with a wet sponge and mild
cleaning agent, forex ample, car shampoo.
R Only use cleaning agents or clo ths suitable for
plastic lenses.
Sensors
Sensors
R Clean the sensors in the front and rear bump-
ers with a soT clo thand car shampoo
(/ page 152).
R When using a high-pressure cleaner, keep a
minimum distance of 30 cm. 232
232
Maintenance and care

Seat belts
Seat belts
R Clean wi thluk ewa rmsoapy water.
R Do not use chemical cleaning agents.
R No heating over 80°C or drying in direct sun-
light.
Ins
Instr trument clust
ument clust er lenses
er lenses
R Clean the sur faces carefully with a micro/bre
clo thand acr ylic glass care products.
R Do not use any other agents.
Displ ay
Display
R Switch o. the display and let it cool down.
R Clean the sur face carefully with a micro/bre
clo thand a suitable displ aycleaning product
(TFT-LCD).
R Do not use any other agents.
Digit
Digit al inside r
al inside r ear
earvie
vie w mirr
w mirr or
or
R Clean the mir ror glass with a clo thmoistened
with glass cleaner.
R Clean the light sensors of the inside rearview
mir ror with a dry cotton clo th.
R Do not spr aythe glass cleaner on the mir ror
glass.
R Do not use any other agents.
Plas
Plas tic tr
tic tr im
im
R Clean with a damp micro/bre clo th.
R For heavy soiling: Use a cleaning product rec-
ommended for Mercedes-Benz.
R Do not a1x stic kers, /lms or similar.
R Do not allow tocome into contact with cos-
metics, insect repellent and sun creams.
R
R oof lining
oof lining
R Clean with a brush or dry shampoo.
Car
Car pet
pet
R Use a carpet and textile cleaning agent recom-
mended for Mercedes-Benz.
Genuine leat
Genuine leat her seat cov
her seat covers
ers
R Clean with a damp clo thand then wipe with a
dry clo th.
R Leather care: Use a leather care agent recom-
mended for Mercedes-Benz.
R Do not allow the leather tobecome too damp.
R Do not use a micro/bre clo th.
Imit
Imit ation leat
ation leat her seat cov
her seat cov ers
ers
R Clean with a damp clo thand 1% soapy water.
R Do not use a micro/bre clo th.Clot
Clot
h seat cov
h seat cov ers
ers
R Clean with a damp micro/bre clo thand 1%
soap solution and allow todry.
St
St eer
eer ing wheel fr
ing wheel fr om g
om genuine leat
enuine leat her or DIN
her or DINAMICAAMICA
* NO
NOTE
TEDamage caused bywrong cleaners #
Do not use sol vent-based cleaning
agents such as tarre mo ver or wheel
cleaner; neither should you use polishes
or wa xes. Otherwise you may damage
th e /nish. R
Clean with a damp clo thand a 1% soapy water
solution and then wipe with a dry clo th.
R For heavy soiling: Use a cleaning product rec-
ommended for Mercedes-Benz.
R Leather care: Use a leather care agent recom-
mended for Mercedes-Benz.
R Do not allow the leather tobecome too damp.
R Do not use a micro/bre clo th.
% Leather is a natural product. It has natural sur-
fa ce properties, such as di.erences in st ruc-
ture, mar kscaused bygrow thand injury or
subtle colour di.erences.
R
R eal w
eal w ood and tr
ood and tr im elements
im elements
R Clean with a micro/bre clo th.
R Black piano-lac quer look: Clean with a damp
clo thand soapy water.
R For heavy soiling: Use a cleaning product rec-
ommended for Mercedes-Benz.
R Do not use any cleaning agents, polishes or
waxes containing sol vents containing sol vents. 234 234
Maintenance and ca
re

P
P
ar
ar tiall
tiall y laden v
y laden v ehicle
ehicle1
1
F
Full
ull y laden v
y laden v ehicle
ehicle
T
T yr
yr es/disk
es/disk
wheel
wheel Fr
Fr
ont axle R
ont axle R ear axle Fr
ear axle Front axle R
ont axle R ear axle
ear axle
245/45 R 19
XL 102Y 230 kPa (2.3
bar/33 psi) 230 kPa (2.3 bar/33
psi) 260 kPa (2.6
bar/38 psi)270 kPa (2.7
bar/39 psi)
245/45 R 19
XL 102W 260 kPa (2.6
bar/38 psi) 260 kPa (2.6 bar/38
psi) 290 kPa (2.9
bar/42 psi)300 kPa (3.0
bar/44 psi)V V
ehicles wit
ehicles wit h agr
h a gross v
oss v ehicle w
ehicle w eight of
eight of 3,200 kg
3,200 kg
and all-wheel dr
and all-wheel dr iv
ive 4MA
e 4MA TIC
TIC
The following tyre pressure values apply tothefo l-
lowing vehicles:
R with a gross vehicle weight of 3,200 kg
R with a permissible axle load of 1,650 kg on the
re ar axle R
with 4MATIC
R the tyres referred tounder "Wheel and tyre
combinations" (/ page 264)
Ty re pressure forth e spare wheel is 350 kPa
(3.5 bar/51 psi). P
P
ar
ar tiall
tiall y laden v
y laden v ehicle
ehicle1
1
F
Full
ull y laden v
y laden v ehicle
ehicle
T
T yr
yr es/disk
es/disk
wheel
wheel Fr
Fr
ont axle R
ont axle R ear axle Fr
ear axle Front axle R
ont axle R ear axle
ear axle
235/55 R 17
XL 103W/V 270 kPa (2.7
bar/39 psi) 250 kPa (2.5 bar/36
psi) 280 kPa (2.9
bar/41 psi)310 kPa (3.1
bar/45 psi)
245/45 R 19
XL 102Y 230 kPa (2.4
bar/33 psi) 230 kPa (2.3 bar/33
psi) 260 kPa (2.7
bar/38 psi)280 kPa (2.8
bar/41 psi)
245/45 R 19
XL 102W/V 270 kPa (2.7
bar/39 psi) 270 kPa (2.7 bar/39
psi) 290 kPa (2.9
bar/42 psi)310 kPa (3.1
bar/45 psi)T T
yr
yr e pr
e pr essur
essur e monit
e monit or
oring syst
ing syst em
em F
F
unction of t
unction of t he tyr
he tyre pr
e pressur
essur e monit
e monit or
oring syst
ing syst em
em
The system checks the tyre pressure and the tyre
te mp erature of the tyres /t tedtotheve hicle by
means of a tyre pressure sensor.
Ne w tyre pressure sensors, e.g. in winter tyres, are
automatical ly taught-in during the /r stjourney they
are used.
It is the driver's responsibility toset the tyre pres-
sure tothere commended cold tyre pressure suita-
ble forth e operating situation (/ page 253).
No tethat the cor rect tyre pressure forth e cur rent
ope rating situation must /rst be taught-in tothe
tyre pressure monitoring system. If a substantial
loss of pressure occurs, thewa rning thre shold for
th ewa rning message is alignedtotheta ught-in
re fere nce values. Restart the tyre pressure monitor
aTer adjusting tothe cold tyre pressure (/
page 258). The cur rent pressures are sa ved as
new refere nce values. This will ensure that a warn-
ing message will only appear if the tyre pressure
drops signi/cantl y.
The h warning lamp in the inst rument cluster
displa ysa de tected pressure loss or a malfunction
as follo ws:
R ifth eh warning lamp is lit continuousl y,
th e tyre pressure on one or more tyres is sig-
ni/cant lytoo lo w.The tyre pressure moni tor is
not malfunctioning.
R ifth eh warning lamp 0ashes for around a
minute and then remains lit cons tantl y,the tyre
pressure monitor is malfunctioning.
R a message also appears in the inst rument clus-
te r.
1 The tyre pressures forth e partially laden vehicle are not valid forth e Marco Polo with integ rated kitchen. Wheels and tyres
257 257

Obser
vethefo llowing points when selecting, /tting
and replacing tyres:
R Countr y-speci/c requ irements for tyre
appr oval that de/ne a speci/c tyre type for
yo ur vehicle.
Fu rthermore, the use of cer tain tyre types in
cer tain regions and areas of operation can be
high lybene/cial.
R Use only tyres and wheels of the same type,
design (summer tyres, winter tyres, all-season
tyres) and make.
R Only /t wheels of the same size and tread
design on one axle (leT and right).
It is only permissible to/t a di.e rent wheel
size tothis in theev ent of a 0at tyre in order to
drive tothe specialist workshop.
R Only /t tyres of the cor rect size onto the
wheels.
R Do not make any modi/cations tothe brake
system, the wheels or the tyres.
The use of shims or brake dust shields is not
permitted and results in the in validation of the
ve hicle's general ope rating permit.
R V
V ehicles wit ehicles wit h a tyr
h a tyre pr
e pressur
essur e monit
e monit or
oring sy
ing sy s-
s-
t
t em:
em: all /t tedwheels must be equipped with
functioning sensors forth e tyre pressure moni-
to ring system.
R Attemp eratures below 10°C use winter tyres
or all-season tyres with the M+S marking on all
wheels.
Wi nter tyres bea ring thei snow0ake sym-
bol in addition tothe M+S marking pr ovide the
best possible grip in wintry road conditions.
R For M+S tyres, only use tyres with the same
tread.
R Obser vethe maximum permissible speed for
th e M+S tyres /t ted.
If th is is below theve hicle's maximum permis-
sible speed, this must be indicated in an appro-
priate label in the driver's /eld of vision.
R Run in new tyres at moderate speeds forthe
/r st 100 km.
R Replace the tyres aTer six years at the latest,
re ga rdless of wear.
Fo r more information on wheels and tyres, contact
a quali/ed specialist workshop. Also obser
vethefo llowing fur ther related subjects:
R Notes on tyre pressure (/ page 253)
R Tyre pressure table (/ page 254)
R Notes on the emer gency spa rewheel
(/ page 267) N No
ot
tes on c
es on c hanging wheels
hanging wheels &
W
WARNING
ARNING Risk of injury thro ugh di.erent
wheel sizes
Inter changing the front and rear wheels can
se verely impair the driving characteristics.
The disk brakes or wheel suspension compo-
nents may also be damaged. #
Only inter change the front and rear
wheels if the wheels and tyres ha vethe
same dimensions. Inter
changing the front and rear wheels if the
wheels or tyres ha vedi.erent dimensions can ren-
der thege neral ope rating permit in valid.
On vehicles with the same front and rear wheel
size, you can inter change the wheels every 5,000
to 10,000 km depending on thewe ar. Ensure the
direction of rotation is maintained forth e wheels.
It is imperative toobser vethe inst ructions and
saf ety no tes on "Changing a wheel" when doing so. Size cat Size cat
egor
egories of wheels
ies of wheels The de
term ined vehicle speed is displa yed in the
inst rument cluster and is impor tant for controlling
th e driving saf ety systems and driving systems. The
display accuracy of the speedome ter and the
odome ter is legally prescribed. De term ining the
speed is dependent on the tyre size or thero lling
circumference of the tyres. The rim diame ter is
alw ays speci/ed in inches.
Fo rth is reason, theve hicle cont rol units can be
coded forth efo llowing wheel size categories: Wheel size cat
Wheel size cat
egor
egory 1
y 1
195/65 R 16 C
205/65 R 16 C
225/60 R 16 C
225/55 R 17 C 260 260
Wheels and tyres

R
R
emo
emo ving a wheel
ving a wheel R
R
eq
eq uir
uir ements:
ements:
R The vehicle is raised (/ page 262).
When changing a wheel, avoid applying any force
to the brake discs since this could impair the le vel
of comfort when braking.
* NO
NOTE
TEDamage tothre ading from dirt on
wheel bolts #
Do not place wheel bolts in sand or on a
dirty sur face. #
Unscr ewthe wheel bolts. #
Remo vethe wheel. F
F
itting a ne
itting a ne w wheel
w wheel R
R
eq
eq uir
uir ements
ements
R The wheel is remo ved (/ page 263). &
W WARNING ARNING Risk of accident from losing a
wheel
Oiled or greased wheel bolts can cause the
wheel bolts tocome loose, as too can dam-
aged wheel bolts or wheel hub thre ads. #
Never oil or grease theth re ads. #
Intheev ent of damage totheth re ads,
contact a quali/ed specialist workshop
immediatel y. #
Have the damaged wheel bolts or dam-
aged hub thre ads replaced. #
Do not continue driving. &
W
WARNING
ARNING Risk of injury from tightening
wheel bolts and nuts
If yo u tighten the wheel bolts or wheel nuts
when theve hicle is raised, the jack could tip. #
Only tighten wheel bolts or wheel nuts
when theve hicle is on thegr ound. #
Obser vethe information on thech oice of tyres
(/ page 258). #
Obser vethe inst ructions and saf ety no tes on
ch anging a wheel (/ page 258).#
For saf etyre asons, only use wheel bolts or
wheel nuts which ha vebeen appr ovedby
Mercedes-Benz and forth e wheel in question. #
Clean the wheel and wheel hub contact sur fa-
ces. Low
Low
er
ering t
ing t he v
he vehicle
ehicle aTer
aTera wheel c
a wheel c hange
hange &
W
WARNING
ARNING Risk of accident due toincor-
re ct tightening torque
The wheels could come loose if the wheel bolts
or wheel nuts are not tightened tothe prescri-
bed torque. #
Ensure that the wheel bolts or wheel nuts
are tightened tothe prescribed tighten-
ing torque. #
Ifyo u are not sure, do not mo vetheve hi-
cle. Con tact a quali/ed specialist work-
shop and ha vethe tightening torque
ch ecked immediatel y. R
R
eq
eq uir
uir ements:
ements:
R The new wheel has been /t ted (/page 263). #
Place the adap ter and thera tchet on the he xa-
gon head nut of the jack such that the lettering
AB/DOWN is visible. #
T
To low
o low er t
er the v
he v ehicle:
ehicle: turnthera tchet of the
jack anti-clockwise. #
S
St
teel wheels:
eel wheels: tightenth e wheel bolts evenly in
a crosswise pattern in the sequence indicated
(1 to5 ) and toa maximum of 200 Nm. #
Light-allo
Light-allo y wheels:
y wheels: tightenthe wheel bolts
ev enly in a crosswise pattern in the sequence
indicated (1 to5 ) and toa maximum of
180 Nm. #
Check the tyre pressure of the ne wly/tted
wheel and adjust it if necessar y.
V
V ehicles wit
ehicles wit h t
h the tyr
he tyr e pr
e pressur
essur e monit
e monit or syst
or system:
em:all
/t ted wheels must be equipped with functioning
sensors. #
Retighten the wheel bolts tothe speci/ed tight-
ening torque aTer theve hicle has been driven
50 km. Wheels and tyres
263
263

R19
R19
T
T
yr
yr es
es Light-allo
Light-allo y wheels
y wheels
245/45 R19 XL 102Y 8 J x 19 H2 ET 52245/45 R19 XL 102Y: only
forve hicles with a per-
missible gross weight up to3,200 kg and a permis-
sible axle load of 1,650 kg on there ar axle. Use of
snow chains is not permitted. Obser vethe no tes
under "Snow chains". Spar Spar
e wheel e wheel N
No
ot
tes on t
es on t he emerg
he emerg ency spar
ency spar e wheel and spare
e wheel and spare
wheel
wheel Spar
Spar
e wheel:
e wheel: wheel and tyre dimensions as well as
th e type of tyre cor respond totheot her /tted
wheels.
% A label with the limit speed and tyre pressure
can be found on the emer gency spa rewheel.
A /tted spare wheel changes the driving character-
istics and bears risks. &
W
WARNING
ARNING Risk of accident due toincor-
re ct wheel and tyre dimensions
The spare wheel can signi/cant lyimpair the
driving characteristics of theve hicle.
To prev ent hazardous situations: #
Adapt your driving style accordingly and
drive carefull y. #
Never /t more than one spare wheel that
di.ers in size tothe wheel being
re placed. #
Only use the spare wheel brie0y. #
Have a spare wheel of a di.erent size
re placed at the nearest quali/ed special-
ist workshop. It is essential that the new
wheel and tyre ha vethe cor rect dimen-
sions and that the cor rect tyre type is
obser ved. R
When using a spare wheel (di.erent from the
wheel tobe replaced), you must not exceed a
to p speed of 80 km/h.
R The tyre pressure of the spare wheel must be
ch ecked before starting a journey and, if nec-
essar y,adjusted (/ page 254).
R Have the spare wheel replaced bya quali/ed
specialist workshop. The
following should be checkedre gular ly, particu-
lar lyprior tolong journe ys:
R the secure positioning of the spare wheel
R the tyre pressure of the spare wheel (adjust
th e tyre pressure if necessary) (/ page 254)
R thefa stenings of the spare wheel holder
The spare wheel is located in a spare wheel holder
under there ar of theve hicle.
Re place the tyres aTer six years at the latest,
re ga rdless of wear. This also applies tothe spare
wheel.
% Ifyo u ha ve/tted a spare wheel, the tyre pres-
sure monitor will not function forth is wheel.
The spare wheel is not equipped with a sensor
fo r monitoring tyre pressure. F F
itting and r
itting and r emo
emoving t
ving t he spar
he spar e wheel
e wheel R
R
emo
emo ving t
ving t he spar
he spar e wheel under t
e wheel under t he r
he rear of t
ear of t he
he
v
v ehicle
ehicle #
Take the wheel wrench and the auxiliary tool
fo rth e spare wheel winch out of theve hicle
to ol kit (/ page 250). #
Carefully prise o. co ver cap 1with a suitable
to ol, e.g. a scr ewdriver. Be careful not todam-
age the paintwork or the co vering cap when
doing so. Wheels and tyres
267
267

Coolant
Coolant
N
No
ot
tes on coolant
es on coolant
Obser vethe no tes on operating 0uids
(/ page 271). &
W
W ARNING
ARNING Risk of /re‑ and injury from
antifreeze
If antifreeze comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite. #
Allow theve hicle tocool down before
yo uto p up the antifreeze. #
Make sure that no antif reeze spills out
next tothe /ller opening. #
Thoroughly clean the antifreeze from
component parts before starting the
ve hicle. *
N
NOOTE
TE Damage caused byincor rect cool-
ant #
Only add coolant that has been premixed
with there qu ired antifreeze pr otection. Information on coolant is
available at thefo llowing
locations:
R Inthe Mercedes-Benz Speci/cation for Operat-
ing Fluids 320.1
- Athttps://be vo.mercedes-benz.com
- Inthe Mercedes-Benz BeVo app
R Ataqu ali/ed specialist workshop
* N
NOOTE
TE Overheating at high outside temp er-
atures If an inappropriate coolant is used,
the engine
cooling system is not su1cient lyprotected
against overheating and cor rosion at high out-
side temp eratures. #
Always use coolant appr ovedby
Mercedes-Benz . #
Obser vethe inst ructions in the
Mercedes-Benz Speci/cations for Oper-
ating Fluids 320.1. *
N
NOOTE
TE Paintwork damage due tocoolant #
Do not spill coolant on painted sur faces. Ha
ve the coolant regular ly replaced at a quali/ed
specialist workshop. No
tethe proportion of anti-cor rosion agent/anti-
freeze in the engine cooling system within thefo l-
lowing temp erature ranges:
R A minimum of 50% (antifreeze pr otection down
to about -37°C)
R A maximum of 55% (antifreeze pr otection down
to -45°C)
Capacities, coolant
Capacities, coolant
Engine cooling syst Engine cooling syst em
em Model
Model
Capacity
Capacity
All models Approx. 10.4 l
Appr ox. 13.4 l
on vehicles with auxili-
ary heating W
W
indscr
indscr een w
een washer
asher 0uid
0uid N
No
ot
tes on windscr
es on windscr een w
een washer
asher 0uid
0uid
Obser vethe no tes on operating 0uids
(/ page 271). &
W
WARNING
ARNING ‑ Risk of /re and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly 0am-
mable. It could ignite if it comes into contact
with hot engine component parts or the
ex haust system. #
Make sure that no windscreen washer
concentrate spills out next tothe /ller
opening. *
N
NOOTE
TE Damage totheex terior lighting due
to unsuitable windscreen washer 0uid Unsuitable windscreen
washer 0uids may dam-
age the plastic sur face of theex terior lighting. #
Only use windscreen washer 0uids which
are also suitable for use on plastic sur fa-
ces, e.g. MB SummerFit or MB WinterFit. *
N
NOOTE
TE Bloc ked spr aynozzles caused by
mixing windscreen washer 0uids #
Do not mix MB SummerFit and MB Win-
te rFit with other windscreen washer 0u-
ids. Do not use distilled or de-ionised
water. Otherwise,
th e /ll le vel sensor may give a false reading. Te
ch nical data
277
277

Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Active Distance Assist
Off *A
ctive Dis tance Assist DISTRONIC has been deactivated
(/ page 161).
In theeve nt of a deactivation not initia tedby the driver, a warning
to ne sounds as well.
Active Distance Assist
inoperative *A
warning tone also sounds. Active Distance Assist DISTRONIC is mal-
functioning. In addition, BASmay ha vefailed. #
Consult a quali/ed specialist workshop.
Active Distance Assist
and Limiter inoperative *A
warning tone also sounds. Active Distance Assist DISTRONIC and
th e limiter are malfunctioning. #
Consult a quali/ed specialist workshop.
Active Distance Assist
suspended *Y
ou are accelerating. Active Distance Assist DISTRONIC does not
inter vene forth e duration of the acceleration process. #
Remo ve yo urfoot from the accelerator pedal.
Ac tive Distance Assist DISTRONIC will be acti vated again.
Active Distance Assist
currently unavailable
See Owner's Manual *A
warning tone also sounds.
Ac tive Distance Assist DISTRONIC has been switched o. and is tem-
porarily non-operational.
The following causes are possible:
R The function is impaired due toheavy rain or sno w.
R The radar sensor system is temp orarily non-operational, e.g. due
to electromagnetic radiation close toTV orradio transmitting sta-
tions or other sources of radiation.
R The system is outside the operating temp erature range.
R The on-board electrical system voltage is too lo w.
If th e causes mentioned abo veno longer app ly,th e display message
will disappear and Active Distance Assist DISTRONIC will be opera-
tional again.
If th e display message does not disappear: #
Stop in accordance with the tra1c conditions. #
Secure theve hicle against rolling away. #
Restart theve hicle.
Active Distance Assist
available again *A
ctive Dis tance Assist DISTRONIC is ope rational again following tem-
porary non- availabilit y.Yo u can now switch Active Distance Assist
DISTRONIC on again (/ page 162).
Active Brake Assist Func-
tions limited See Own-
er's Manual *A
ctive Brake Assist is una vailable due toa malfunction. #
Consult a quali/ed specialist workshop.
Active Brake Assist Func-
tions currently limited
See Owner's Manual *A
ctive Brake Assist is temp 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. 290 290
Display message
s andwarning and indicator lamps