MERCEDES-BENZ V-CLASS MPV 2021 Owners Manual

R
The ignition is switched off.
R The front left-hand door is open.
% Do not
get ba ckinto theve hicle during the
re fuelling process. Otherwise, electros tatic
ch arge could build up again.
Obser vethe no tes on operating fluids
(/ page 269). #
Open fuel filler flap 1. #
Turn fuel filler cap 2anti-clockwise and
re mo veit. #
Close all vehicle doors topreve nt fuel
va pours from entering theve hicle interior. #
Comple tely slide thefiller neck of the pump
nozzle into theta nk, hook in place and refuel. #
Fillthe fuel tank only until the pump nozzle
switches off. #
Replace fuel filler cap 2and turn it clock‐
wise.
Yo u will hear a click when the fuel filler cap is
closed full y. #
Open the front left-hand door. #
Close fuel filler flap 1.
% Ve
hicles with a diesel engine and incor‐
re ct fuelling pr otector against refuelling
with petrol: thefiller neck is designed for
re fuelling at diesel filling pumps for
passenger vehicles.
% Ve
hicles with a diesel engine without an
incor rect fuelling pr otector: refuelling pre‐
fe rred at diesel filling pumps for passenger
ve hicles. Ho wever,yo u can also refuel at a
diesel filling pump for lor ries.
% If
th e fuel tank has been run comple tely dr y,
to p up with at least 5 l of fuel. Before starting th
e engine again: switch on the ignition three
or four times.
% Ve
hicles that can use a mixture of fuels can
be recognised bythest icke r "Ethanol up to
E85!" on the fuel filler flap. Ad
Blue ® Note
s onAdBlue ®
Ad Blue ®
is a wate r-soluble fluid forth eex haust
ga s af tertre atment of diesel engines. In order for
th eex haust gas af tertre atment tofunction prop‐
er ly, only use AdBlue ®
in accordance with
ISO 222 41 .
Ad Blue ®
has thefo llowing properties:
R non-t oxic
R colourless and odourless
R non-flammable
If yo u open theAd Blue ®
tank, small amounts of
ammonia vapour may be released. Fill the
Ad Blue ®
tank only in well-ventilated areas.
Do not let AdBlue ®
come into contact wi thskin,
ey es or clo thes. Keep AdBlue ®
aw ay from chil‐
dren.
Do not ingest AdBlue ®
. If AdBlue ®
is swallo wed,
immediately rinse your mouth out thoroughly.
Drink plenty of water.Seek medical attention at
once.
Obser vethe no tes on the operating fluid AdBlue ®
(/ page 272).
Ad Blue ®
av ailability:
R AdBlue ®
can be topped up at a qualified spe‐
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
R AdBlue ®
is available at numerous filling sta‐
tions via AdBlue ®
filling pumps.
R Alternatively, AdBlue ®
is available at qualified
specialist workshops, e.g. a Mercedes-Benz
Service Centre, and at numerous filling sta‐
tions as an AdBlue ®
re fill canis ter or AdBlue ®
re fill bottle.
% Ensure
the connection between there fill con‐
ta iner and vehicle filler neck does not drip. 14 8
Driving and pa rking

Calling up
theAd Blue ®
ra nge and AdBlue ®
fill
le ve l display
On-board computer:
4 Service 5
AdBlue
Ad Blue ®
freezes at a temp erature of appr ox‐
imately -11 °C. The vehicle is equipped with an
Ad Blue ®
preheating sy stem at thefa ctor y.This
means that winter operation is also ensured for
te mp eratures below -11 °C. If youto p up AdBlue ®
at temp eratures below -11 °C, theAd Blue ®
level
in the instrument clus ter may not be displa yed
cor rectl y.Ifth eAd Blue ®
is frozen, drive for at
least 20 minutes and then park theve hicle for a
minimum of 30 seconds, so that the le vel is cor‐
re ctly displa yed. In extreme winter conditions,
th e time needed todetect the amount topped up
may be considerably longer. Park theve hicle in a
wa rm garage tospeed up this process. #
Call up the menu.
The multifunction display will show the
Ad Blue ®
leve l.
To pping up AdBlue ®
* NOTEEngine damage due toAd Blue ®
being in the fuel #
AdBlue ®
must not be used tofill th e fuel
ta nk. #
Only use AdBlue ®
to fill th eAd Blue ®
ta nk. #
Do not overfill theAd Blue ®
tank. *
NO
TEContamination of theve hicle inte‐
ri or due toAd Blue ®
lea kage #
Afterto pping up, carefully close the
Ad Blue ®
re fill conta iner. #
Avoid car rying AdBlue ®
re fill conta iners
permanently in theve hicle. *
NOTEOver filling theAd Blue ®
tank due to
th eve hicle standing at an angle The
AdBlue ®
tank can only be filled as inten‐
ded when theve hicle is par ked on a le vel sur‐
fa ce. This way,va riations in thefilling amount
are avoided.
When filling there ser voir when theve hicle is
st anding at an angle, there is a risk of overfill‐
ing. This may damage exhaust gas af tertre at‐
ment components. #
Park theve hicle on a le vel sur face tofill
th eAd Blue ®
tank. Re
quirements
R The auxiliary heating is switched off.
R The ignition is switched off.
R The front left-hand door is open.
The following messages that appear in succes‐
sion in the multifunction display indicate that you
need torefill th eAd Blue ®
tank:
R Refill AdBlue See Owner's Manual
The AdBlue ®
tank has dropped tothere ser ve
le ve l.
R Refill AdBlue Emer. oper. in XXX km See Own-
er's Manual
The low AdBlue ®
leve l will result in limited
per form ance af terth ere maining dis tance dis‐
pl ay ed has been driven. Top up AdBlue ®
as
qu ickly as possible.
R Emergency operation: 20 km/h No start in
XXX km See Operating Instructions
The vehicle speed is limited toappr oximately
20 km/h. You will on lybe able todrive the
ve hicle the dis tance shown. Subsequently, it
will no longer be possible tostart the engine.
R Refill AdBlue Engine start not possible
The vehicle can no longer be star ted.
Yo u can also ha vetheAd Blue ®
fill le vel and the
Ad Blue ®
ra nge displ ayed (/ page149).
Opening theAd Blue ®
filler cap #
Open the front door on the left-hand side and
fo ld out filler flap 1. #
Close all vehicle doors topreve nt ammonia
va pours from entering theve hicle interior. #
Turn blue AdBlue ®
filler cap 2anti-clockwise
and remo veit.
Fu elfiller cap 3forth e fuel remains closed. Driving and parking
14 9

Re
fuelling with a refill canis ter Example
#
Unscr ewthe cap on AdBlue ®
re fill canis ter
1 . #
Screw disposable hose 2onto the opening
of Ad Blue ®
re fill canis ter1 until hand-tight. #
Screw disposable hose 2onto thefiller neck
of theve hicle until hand-tight. #
Lift up and tip AdBlue ®
re fill canis ter1.
The filling process stops when theAd Blue ®
ta nk is comple tely full.
Ad Blue ®
re fill canis ter1 can be remo ved
when it has been only partially em ptied.
% Avoid storing AdBlue ®
containers perma‐
nently in theve hicle. #
Unscr ewdisposable hose 2inreve rse order
from AdBlue ®
re fill canis ter1 and thefiller
neck of theve hicle.
Closing theAd Blue ®
filler cap #
Afterfilling theAd Blue ®
tank, place the
Ad Blue ®
filler cap on thefiller neck and
tigh ten it clo ckwise. #
Turn theAd Blue ®
filler cap until the lettering
is legible and horizontal.
The filler neck is only loc ked cor rectly when
th is is the case. #
Open the front left-hand door firs t, and then
close thefiller flap. #
Swit chon the ignition.
The Refill AdBlue See Owner's Manual mes‐
sage in the multifunction display must go out
af te r appro x. 20 seconds. If the message con‐ tinues
tobe displa yed, you must add more
Ad Blue ®
. Park
ing Pa
rking theve hicle &
WARNING Risk offire caused byhot
ex haust sy stem parts
Flammable materials such as lea ves, grass or
twigs may ignite. #
Park theve hicle so that no flammable
material can come into con tact with hot
ve hicle components. #
In particular, do not park on dry grass‐
land or har vested grain fields. &
WARNING Risk of accident and injury
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in part icular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf fic.
R operate vehicle equipment and become
trapped, forex ample.
In addition, thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. *
NO
TEDama getotheve hicle or the drive‐
train due torolling away #
Always park your vehicle safely and
according tolegal requirements. #
Always proper lysecure theve hicle
against rolling away. 15 0
Driving and pa rking

*
NO
TETransmission damage caused by
ro lling in neut ral position If
th e engine is switched off and theve hicle
ro lls in neut ral position (e.g. when towing),
th is can cause damage tothe driv etra in and
transmission. #
Only allow theve hicle toroll brief lyin
th e neutral position. Depending on
the transmission, the automatic
transmission switches totransmission position
005D (9-speed au tomatic transmission) or005C (7-
speed automatic transmission) when switching
off the engine. The po wer transmission between
th e engine and transmission is inter rupte d in
transmission position 005C. Inthis case, shift the
automatic transmission totransmission position
005D before switching off the engine when theve hi‐
cle is stationar y.Obser vethe messages on the
multifunction displa y.App lythe parking brake to
pr eve nttheve hicle from rolling away.
Obser vethefo llowing points toensure that the
ve hicle is properly secured against rolling away
unin tentionally. #
Always apply the parking brake. #
On uphill or downhill inclines: turnthe
front wheels towa rdsth eke rb. #
Vehicles with manual transmission:
engage firs t or reve rsege ar. #
Vehicles with automatic transmission:
engage transmission position 005D.#
Turn theke yto position 005Aand switch off the
engine. Electric parking brake
Information on
the electric pa rking brake &
WARNING Risk of accident and inju ry
due toleaving children unat tended in the
ve hicle
If ch ildren are left unat tended in theve hicle,
th ey could, in part icular:
R open doors, thereby endangering other
persons or road users.
R get out and be stru ck byoncoming traf fic.
R operate vehicle equipment and become
trapped, forex ample. In addition,
thech ildren could also set the
ve hicle in motion by,fo rex ample:
R releasing the parking brake.
R changing the transmission position.
R starting theve hicle. #
Never lea vechildren unat tended in the
ve hicle. #
When leaving theve hicle, alw aysta ke
th eke y with you and lock theve hicle. #
Keep theve hicle key out of there ach of
ch ildren. Fo
rth e automatic functions towo rkcor rectl y,the
driver must be seated in the cor rect seat position
(/ page 69).
% The electric parking brake is only actually
applied when
there d0024 indicator lamp
lights up continuousl y.
Au tomatically applying the electric parking
brake
When youre mo vetheke y from the ignition lock
when theve hicle is stationar y,the parking brake
is applied automaticall y.
The red0024 indicator lamp in the multifunction
display lights up. The electric parking brake is
only actually applied when there d0024 indicator
lamp lights up continuousl y.
Re leasing the electric pa rking brake automat‐
ically
Ve hicles with automatic transmission:
The electric parking brake of your vehicle is
re leased when all of thefo llowing conditions are
fulfilled:
R the co-driver seat is occupied
R the seat belt tongue of the seat belt is inser‐
te d into the driver's seat belt buckle
R the engine is running
R you shift the transmission toposition 005Bor
005E
Ve hicles with manual transmission:
The electric parking brake of your vehicle is
re leased when all of thefo llowing conditions are
fulfilled:
R the co-driver seat is occupied
R the seat belt tongue of the seat belt is inser‐
te d into the driver's seat belt buckle
R the engine is running Driving and pa
rking 151

R
age ar is engaged
R youre lease the clutch pedal and depress the
accelerator pedal at the same time
% The holding
forc e of the parking brake is
already reduced when the pulling-a wayge ar
is engaged. Therefore also depress the brake
pedal when engaging thege ar. On lythen is
yo ur vehicle secured against rolling away.
App lying/releasing the electric pa rking brake
manually
Applying the electric pa rking brake #
Turn theke yto position 0047or0048.
If yo u turn theke yto position 005Ainthe igni‐
tion loc k,you can only apply the parking
brake within the next five minutes. #
Press switch 1.
When the electric parking brake is applied,
th ere d0024 indicator lamp lights up in the
multifunction displa y.The electric parking
brake is only actually applied when the
re d0024 indicator lamp lights up continu‐
ously.
Re leasing the electric pa rking brake #
Turn theke yto position 0047or0048.
If yo u turn theke y from position 0047toposi‐
tion 005Ainthe ignition loc k,you can release
th e parking brake once. #
Depress the brake pedal. #
Pull switch 1.
The red0024 indicator lamp on the multifunc‐
tion display goes out.
% If
yo u apply and release the parking brake
frequently within a short period, it may not
be possible torelease the parking brake again in some cases.
Toprotect it from dam‐
age, the parking brake is temp orarily loc ked
and cannot be released – repeat loc k.The
parking brake is operational again af ter
appr oximately 20 seconds.
Emer gency braking
If, in exceptional cases, the service brake fails,
yo u can use the parking brake toper form emer‐
ge ncy braking. The braking di stance is then con‐
siderably greater. #
While driving, press switch 1ofthe electric
parking brake.
The vehicle is braked as long as youke ep
switch 1ofthe electric parking brake
depressed.
The vehicle's brake lights light up.
The longer electric parking brake switch 1is
depressed, the greater the braking forc e.
During the braking procedure, you will receive the
fo llowing feedback from theve hicle:
R Awa rning tone sounds.
R The Release parking brake messageappears
in the multifunction displa y.
R The red0024 indicator lamp flashes in the
multifunction displa y.
When theve hicle has been braked toast andstill,
th e electric parking brake is applied. Park
ing up theve hicle Park
ing up theve hicle for longer than four
we eks #
Connect thest ar ter battery toa trickle
ch arge r via a jump-s tart connection
(/ page 237).
or #
Disconnect all batteries (/ page 239).
Pa rking up theve hicle for longer than six
we eks #
Contact a qualified specialist workshop and
seek advice.
The vehicle can otherwise suf fer dama geas a
re sult of lack of use. 15 2
Driving and pa rking

Driving and driving saf
ety sy stems Note
s on driving sy stems and your responsi‐
bility Yo
ur vehicle is equipped with driving sy stems
which assist you in driving, parking and manoeu‐
vring theve hicle. The driving sy stems are only
aids. They are not a substitute foryo u paying
attention toyour sur roundings and do not relie ve
yo u of your responsibility per taining toroad traf‐
fi c la w.The driver is alw aysre sponsible for main‐
ta ining a safe dis tance totheve hicle in front, for
ve hicle speed, for braking in good time and for
st ay ing in lane. Alw ays pay attention tothe tra ffic
and inter vene if necessa ry. Be aware of the limi‐
ta tions rega rding the safe use of these sy stems.
Driving sy stems can neither reduce therisk of
accident if youfa ilto adapt your driving style nor
ove rride the la wsof ph ysics. They cannot alw ays
ta ke into account road, weather or traf fic condi‐
tions. In
fo rm ation on vehicle sensors and cameras Some driving and driving saf
ety sy stems use
cameras and radar or ultrasonic sensors tomoni‐
to rth e area in front of, behind or next totheve hi‐
cle. 1
Cameras in the outside mir rors
2 Multifunction camera
3 Front camera
4 Ultrasonic sensors
5 Reversing camera
% Depending on
theve hicle's equipment, the
ra dar sensors are integrated on the side of
th ere ar bumpers and/or behind the
Mercedes star in thera diator grille. &
WARNING Risk of accident due to
re stricted de tection per form ance of vehi‐
cle sensors and cameras
If th e area around vehicle sensors or cameras
is co vered, damaged or dirty, cer tain driving
and saf ety sy stems cann otfunction cor rectly.
The reis a risk of an accident. #
Keep the area around vehicle sensors or
cameras clear of any obstructions and
clean. #
Have damage tothe bumper, radiator
grille or stone chipping in the area of
th e front and rear wind owsrepaired at a
qu alified specialist workshop. Ke
ep the areas of the cameras and sensors free
of dirt, ice and slush (/ page 229). The sensors
and cameras must not be co vered and the de tec‐
tion ranges around them must be kept free. Do
not attach additional license pla tebrac kets,
ad vertisements, sticke rs,fo ils or foils toprotect
against stone chippings in the de tection range of
th e sensors and cameras. Make sure that there
are no overhanging loads pr otru ding into the
de tection range.
In theeve nt of damage, or following a se vere
impact, ha vethe function of the sensors checked
at a qualified specialist workshop. Ha vedamage
or stone chipping in the area of the cameras
re paired at a qualified specialist workshop. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about the
fo llowing driving sy stems and driving saf ety sys‐
te ms:
R ABS ( Anti-lock BrakingSystem)
(/ page 154)
R BAS (Bra keAssist System) (/ page154)
R ESP ®
(Electronic Stability Program)
(/ page 154)
R EBD ( Electronic Brakeforce Distribution)
(/ page 156)
R Active Brake Assi st (/ page 156)
R Adaptive brake lights (/ page158)
R Cruise control (/ page158) and limiter
(/ page 158)
R Active Dis tance Assi stDISTRONIC
(/ page 162) Driving and pa
rking 15 3

R
Hill start assist (/ page165)
R HOLD function (/ page165)
R Parking Assist PARKTRONIC (/ page166)
R Reversing camera (/ page167)
R 360° Camera
R Active Parking Assist (/ page169)
R ATTENTION ASSIST (/ page172)
R Traf fic Sign Assi st (/ page 173)
R Blind Sp otAssi st (/ page 174)
R Lane Keeping Assist (/ page174) Fu
nction of ABS (Anti-lock Braking Sy stem) ABS controls
the brake pressure in critical situa‐
tions:
R the wheels are pr evented from lock ing during
braking, forex ample at maximum full- stop
braking or when there is insuf ficient tyre trac‐
tion
R thesteerability of theve hicle in term s of
ph ysical possibilities is ensured when braking
If ABS inter venes, you will feel pulsations in the
brake pedal. The pulsating brake pedal may be an
indication of hazardous road conditions and func‐
tions as a reminder totake extra care while driv‐
ing. Fu
nction of BAS (Brake Assist Sy stem) BA
S suppo rts yo u with additional braking forc e in
an emer gency braking situation.
If yo u depress the brake pedal quickl y,BA S is
acti vated:
R BAS au tomatically boosts the braking forc e of
th e brakes
R BAS can sho rten the braking dis tance
R ABS pr events the wheels from locking
When youre lease the brake pedal, the brakes
function as usual again. BAS is deactivated. Fu
nction of ESP ®
(Electronic Stability Pro‐
gr am) ESP
®
can, within ph ysical limits, monitor and
impr ovedriving stability and traction in thefo l‐
lowing situations:
R when driving and pulling away on wet or slip‐
pe ry road sur faces
R when braking
If th eve hicle is deviating from the direction
desired bythe driver, ESP ®
can stabilise theve hi‐
cle byper form ing thefo llowing actions:
R one or more wheels are braked
R the engine output is adap ted according tothe
situation
% Only use wheels with
there commended tyre
sizes. Only then will ESP ®
function properly.
If th e00E5 warning lamp flashes in the instru‐
ment clus ter,one or more wheels ha vereached
th eir traction limit:
R adapt your driving style to suit the pr evailing
ro ad and weather conditions
R do not deactivate ESP ®
under any circum‐
st ances
R only depress the accelera tor pedal as far as is
necessary when pulling away
If th e00E5 warning lamp lights up continuousl y,
ESP ®
is not available due toa malfunction.
Obse rveth e information on warning lamps and
display messages (/ page 302).
When ESP ®
is deactivated, the00BB warning
lamp in the instrument clus ter lights up continu‐
ously.
Obser vethefo llowing points when ESP ®
is deac‐
tivated:
R vehicle stabilisation is dela yed and is signifi‐
cant lyreduced in the lo wer speed range
R the drive wheels may start tospin
R traction control is still active
% If ESP ®
is deactivated, ESP ®
will still support
yo u when braking. 15 4
Driving and pa rking

Deactivating or activating ESP
®
using the on-
board compu ter &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilisation. #
ESP ®
should only be deactivated in the
fo llowing situations. It may be best
todeactivate ESP ®
in thefo llowing
situations:
R When using snow chains.
R In deep snow.
R On sand or gr avel.
Spinning the wheels results in a cutting action,
which enhances traction.
Ad justing settings using the on-board computer is
only available on vehicles without the00BB but‐
to n on the cent reconsole.
On-boa rdcompu ter:
4 00E2 5
Settings 5
Assistance 5
ESP #
Todeactivate/acti vate:press the0076 but‐
to n.
If ESP ®
is deacti vated, the00BB warning lamp
in the instrument clus ter lights up.
% Obser
vethe information on warning lamps
and display messages (/ page 302).Deactivating or activating ESP
®
using the but‐
ton &
WARNING Risk of skidding if ESP ®
is
deactivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilisation. #
ESP ®
should only be deactivated in the
fo llowing situations. It may be best
todeactivate ESP ®
in thefo llowing
situations:
R When using snow chains.
R In deep snow.
R On sand or gr avel.
Spinning the wheels results in a cutting action,
which enhances traction. #
Press button 1.
The 00BB warning lamp in the instrument
clus ter goes on when ESP ®
is deactivated.
% Obser
vethe information on warning lamps
and display messages (/ page 302). Fu
nction of ESP ®
Crosswind Assist ESP
®
Crosswind Assist de tects sudden gu sts of
side wind and helps the driver tokeep theve hicle
in the lane:
R ESP ®
Crosswind Assist is active at vehicle
speeds abo veappr ox. 80 km/h when driving
st ra ight ahead or cornering slight ly.
R The vehicle is stabilised bymeans of individ‐
ual brake application on one side. The instru‐
ment clus ter displa ysa message with the traf‐
fi c sign for a stro ng crosswind.
ESP ®
Crosswind Assi stdoes not react under the
fo llowing conditions:
R The vehicle is subjected tosevere jolts and
vib rations, e.g. as a result of une ven su rfaces
or po tholes.
R The vehicle loses traction, e.g. on snow or ice
or when aquaplaning. Fu
nction of ESP ®
trailer stabilisation &
WARNING Risk of accident in poor road
and weather conditions
In poor road and weather conditions, the
trailer stabilisation cannot pr event lur ching of
th eve hicle/trailer combination. Trailers with
a high centre of gravity may tip over before
ESP ®
de tects this. Driving and parking
15 5

#
Always adapt your driving style to suit
th e cur rent road and weather condi‐
tions. When
you are driving with a trailer, ESP ®
trailer
st abilisation can stabilise your vehicle if it begins
to swer vefrom side toside:
R Ifth e sy stem de tects the trailer, ESP ®
trailer
st abilisation is active at speeds abo veappr ox‐
imately 65 km/h.
R Minor swerving is reduced byata rgeted, indi‐
vidual brake application on one side.
R Intheev ent of se vere swerving, the engine
output is also reduced and all wheels are
braked. Fu
nction of EBD (Electronic Brakeforce Distri‐
bution) EBD has
thefo llowing characteristics:
R monitoring and controlling the braking force
on there ar wheels
R impr oving driving stabilisation when braking,
especially on bends Fu
nction of Active Brake Assi st Ac
tive Brake Assi stconsi sts of thefo llowing func‐
tions:
R Distance warning function
R Autonomous braking function
R Situation-dependent brake forc e boosting
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles, cyclists or pedes‐
trians, or reduce the ef fects of such a collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, a warning tone sounds and theL warn‐
ing lamp lights up in the instrument clus ter.
If yo u do not react tothewa rning, autonomous
braking can be initiated in critical situations. In
especially critical situations, Active Brake Assi st
can initiate auto nomous braking dire ctly.In this
case, thewa rning lamp and warning tone occur
simul taneously wi th the braking application.
If yo u apply the brake yourself in a situation
de tected as critical byActive Brake Assi st, or
apply the brake during autonomous braking, sit‐
uation-dependent brake forc e boosting occurs.
The brake pressure increases up tomaximum
full-s top braking if necessar y. If autonomous braking or a situation-dependent
braking boosting ef
fect has occu rred, theL
wa rning lamp flashes brief lyand then goes out.
Ve hicles with PRE-SAFE ®
:if th e autonomous
braking function or the situation-dependent brake
fo rc e boosting is triggered, additional pr eventive
measu resfo r occupant pr otection (PRE-SAFE)
may also be initiated (/ page 36). &
WARNING Risk of accident due tolimi‐
te d de tection per form ance of Active
Brake Assi st
Ac tive Brake Assi stcannot al ways clea rly
identify objects and complex traf fic situa‐
tions.
Ac tive Brake Assi stis only an aid. The driver
is responsible for maintaining a suf ficiently
safe dis tance totheve hicle in front, vehicle
speed and for braking in good time. #
Always pay careful attention tothe traf‐
fi c situation; do not relyonActive Brake
Assi stalone. #
Be prepared tobrake or swer veif nec‐
essar y. Obser
vethe sy stem limitations of Active Brake
Assi st. Due tothe nature of the sy stem, complex
but non-critical driving conditions may also cause
Ac tive Brake Assi stto inter vene du ring braking.
The individual subfunctions are available in
th efo llowing speed ranges:
Distance warning function
The dis tance warning function warnsyo u in the
fo llowing situations:
R From a speed of appr oximately 30 km/h, if
ove r se veral seconds the dis tance maintained
to theve hicle tr avelling in front is insuf ficient
fo rth e driven speed. The Lwarning lamp
in the instrument clus terth en lights up.
R From a speed of appr oximately 7 km/h, if
yo ur vehicle is critically close toave hicle or
pedestrian. An intermittent warning tone
sounds and theL warning lamp in the
instrument clus terth en lights up.
Brake immediately or take evasive action, pr ovi‐
ded it is safe todo so and the tra ffic situation
allo ws th is. 15 6
Driving and pa rking

The dis
tance warning function can aid you in the
fo llowing situations with an intermitte ntwa rning
to ne and a warning lamp:
R Vehicles tr avelling in front: uptoappr ox‐
imately 250 km/h
R Stationary vehicles: uptoappr oximately
80 km/h
R Crossing vehicles: noreaction
R Moving pedestrians/cyclists ahead: upto
appr oximately 80 km/h
R Crossing cyclists: uptoappr oximately
60 km/h
R Stationary pedestrians: noreaction
Au tonomous braking function
The autonomous braking function may inter vene
at speeds starting from appr oximately 7 km/h in
th efo llowing situations:
R Vehicles tr avelling in front: uptoappr ox‐
imately 200 km/h
R Stationary vehicles: uptoappr oximately
50 km/h
R Crossing vehicles: noreaction
R Cyclists ahead: uptoappr oximately
80 km/h
R Moving pedestrians/crossing cyclists: up
to appr oximately 60 km/h
R Stationary pedestrians: noreaction
Situation-dependent brake forc e boosting
Situation-dependent brake forc e boosting may
inter vene at speeds starting from appr oximately
7 km/h in thefo llowing situations:
R Vehicles tr avelling in front: uptoappr ox‐
imately 250 km/h
R Stationary vehicles: uptoappr oximately
80 km/h
R Crossing vehicles: noreaction
R Cyclists ahead: uptoappr oximately
80 km/h
R Moving pedestrians/crossing cyclists: up
to appr oximately 60 km/h
R Stationary pedestrians: noreaction Cancelling a brake application of
Active Brake
Assi st
Yo u can cancel a brake application of Active
Brake Assi stat any time by:
R Fully depressing the accelerator pedal or with
kickdown.
R Releasing the brake pedal.
Ac tive Brake Assi stmay cancel the brake applica‐
tion when one of thefo llowing conditions is fulfil‐
led:
R You manoeuv retoavo idthe obs tacle.
R Thereis no longer a risk of collision.
R An obs tacle is no longer de tected in front of
yo ur vehicle.
Sy stem limits
Fu ll sy stem per form ance is not available for a few
seconds af ter switching on the ignition or af ter
driving off.
The sy stem may be impaired or may not function
in thefo llowing situations:
R In sno w,rain, fog or heavy spr ay.
R Ifth e sensors are dirty, mis ted up, damaged
or co vered.
R Ifth e sensors are impaired due tointer fer‐
ence from other radar sources, e.g. strong
ra dar reflections in multi-s torey car par ks.
R If a loss of tyre pressure or a defective tyre
has been de tected and displa yed.
R In complex tra ffic situations where objects
cannot alw ays be clear lyidentified.
R If pedestrians or vehicles mo vequickly into
th e sensor de tection range.
R If pede strians are hidden by other objects.
R Ifth e typical outline of a pedestrian cann otbe
distinguished from the bac kground.
R If a pedestrian is not de tected as such, e.g.
due tospecial clo thing or other objects.
R In bends with a nar rowradius. Ac
tivating or deactivating Active Brake Assi st On-board computer:
4 00E2 5
Settings 5
Assistance
5 Active Brake Assist
% It is
recommended that Active Brake Assi stis
alw ays left activated. Driving and parking
157