brakes MERCEDES-BENZ V-CLASS 2021 Owners Manual

1
å ESP®
OFF →
304
2 ÷ ESP®
→
304
3 · Distance warning →
308
4 Ð Powe r steering →
309
5 #! Turn signal lights →
108
6 ! Parking brake (yellow) →
304
7 ! ABS →
304
8 ; Engine diagnostics →
309
9 % Preglow
A ! Parking brake (red) →
304
B J Brakes (red) →
304
C ? Coolant →
309
D J Brakes (yellow) inopera-
tive E
6 Restraint system →
304
F ü Seat belt →
307
G K High beam →
108
H L Low beam →
107
I 6 Reser vefuel →
309
J T Standing lights and
licence plate and instrument
lighting →
107
K R Rear fog light →
107
N Inoperative
L h Tyre pressure monitoring
system →
311
Cor responding messages may
also be shown on the inst ru-
ment cluster displa y.→
281 At
a glance – Indicator and warning lamps
7 7

as driver assis
tance systems, while others enable
comfort or inf otainment functions.
The following pr ovides you with general informa-
tion rega rding data processing in theve hicle. Addi-
tional information rega rding exactly which data in
yo ur vehicle are collected, sa ved and transmitted
to third parties, and for what purpose, can be
fo und in the information directly related tothe
functional characteristics in question in their
re specti veoperating instructions. This information
is also available online and, depending on theve hi-
cle equipment, digitall y.
P
P er
er sonal data
sonal data
Every vehicle is identi/ed bya uni queve hicle iden-
ti/cation number. Depending on the countr y,this
ve hicle identi/cation number can be used by,for
ex ample, go vernmental authorities todeterm ine
th e identity of theow ner. There are other possibili-
ties for using data collected from theve hicle to
identify theow ner or driver, such as the licence
plate number.
Therefore, data generated or processed bycont rol
units may be attributable toa person or, under cer-
ta in conditions, become attributable toa person.
Depending on which vehicle data are available, it
may be possible tomake inferences about, for
ex ample, your driving behaviour, your location, your
ro ute or your use patterns.
Leg
Leg al r al req
equir
uir ements r
ements r eg
egar
arding t
ding t he disclosur
he disclosur e of
e of
data
data
If legally requ ired todo so, manufacturers are, in
individual cases, legally obliged toprov ide go vern-
mental entities, upon requ est and totheex tent
re qu ired, data stored bythe manufacturer. For
ex ample, this may be the case during the in vestiga-
tion of a criminal o.ence.
Go vernmental entities are themsel ves, in individual
cases and within the applicable legal frame work,
authorised toread out data from theve hicle. In the
case of an accident, information that can help with
an in vestigation can, therefore, be take n from the
airbag cont rol unit, forex ample.
Oper
Oper ational dat ational dat a in t
a in the v
he vehicle
ehicle
This is data rega rding the operation of theve hicle,
which ha vebeen processed bycont rol units.
This includes thefo llowing data, forex ample:
R vehicle status information such as the speed,
longitudinal acceleration, lateral acceleration, number of wheel
revo lutions or thefa stened
seat belts display
R ambient conditions, su chastempe rature, rain
sensor or distance sensor
Generall y,these are volatile data and will not be
stored be yond the period of operation but will only
be processed within theve hicle itself. Control
units, vehicle keys forex ample, oTen contain data
memories. Their use permits thete mp orary or per-
manent documentation of tech nical information
about theve hicle's operating state, component
loads, maintenance requ irements and tech nical
ev ents or faults.
Depending on thete ch nical equipment, thefo llo w-
ing data are stored:
R operating status of system components, such
as /ll le vels, tyre pressure or battery status
R malfunctions or faults in impor tant system
components, such as lights or brakes
R system reactions in special driving situations,
such as airbag deployment or the inter vention
of stability control systems
R information on events in which theve hicle is
damaged
In cer tain cases, it may be requ ired tostore da ta
th at wo uld ha veotherwise been temp orar y.This
may be the case if theve hicle has de tected a mal-
function, forex ample.
If yo u use services, such as repair services and
maintenance work, stored operational data as well
as theve hicle identi/cation number can be read
out and used. They can be read out byservice net-
wo rkemplo yees, such as workshops and manufac-
turers or third parties, such as breakdown ser v-
ices. The same is true in the case of warranty
claims and quality assurance measures.
In general, there adout is per form ed via the legally
prescribed port forth e diagnostics connection in
th eve hicle. The operational data that are read out
document tech nical states of theve hicle or of indi-
vidual components and assist in the diagnosis of
malfunctions, compliance with warranty obliga-
tions and quality impr ovement. Tothat end, these
data, in particular information about component
loads, tech nical events, malfunctions and other
fa ults may be transmitted along with theve hicle
identi/cation number tothe manufacturer. In addi-
tion, the manufacturer is subject toproduct liabil-
ity. Forth is reason, the manufacturer also uses
operational data from theve hicle, forex ample, for 26 26
General no
tes

*
N NO OTE
TE Damage totheve hicle due tonot
observing the maximum permitted head-
ro om clearance If
th eve hicle height is greater than the maxi-
mum permitted headroom clearance, thero of
and other parts of theve hicle may be dam-
aged. #
Obser vethe signposted headroom clear-
ance. #
Ifth eve hicle height is greater than the
permitted headroom clearance, do not
enter. #
Obser vethech anged vehicle height with
add-on roof equipment. N No
ot
tes on shor
es on shor t-dist
t-distance tr
ance tr ips
ips
If th eve hicle is predominantly used in short-dis-
ta nce driving, a fault in the automatic cleaning
function of the diesel particulate /lter can occur.
Due tothis, fuel may also accumulate inthe engine
oil and cause engine failure.
During automatic cleaning, extremely hot exhaust
ga ses escape from theex haust pipe. Main tain a
distance of at least 1 m toother objects, e.g.
par kedve hicles, in order toavo id material damage.
If yo u mainly drive short distances, you should
drive on a mo torw ay or go for a country drive for
20 minutes every 500 km. This facilitates the
re ge neration of the diesel particulate /lter.
Inf
Inf or
ormation about tr
mation about tr anspor
ansport b
t by r
y rail
ail
Tr ansporting your vehicle byrail may be subject to
cer tain restrictions or requ ire special measures to
be take n in some countries due tovarying tunnel
heights and loading standards.
Yo u can obtain information about this from a
Mercedes-Benz Service Centre.
Inf
Inf or ormation on br
mation on br ak
ak es
es &
W
WARNING
ARNING Risk of accident due tothe
brake system overheating
If yo u lea veyour foot on the brake pedal when
driving, the brake system may overheat.
This increases the braking distance and the
brake system can even fail. #
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. *
N NOOTE TE Causing wearto the brake linings by
permanently depressing the brake pedal #
Do not permanently depress the brake
pedal while driving. #
Touse braking e.ect of the engine, shiT
to a lo werge ar in good time. Do
Do
wnhill gr
wnhill gradients
adients
On long and steep downhill gradients you should
obser vethefo llowing inst ructions:
R invehicles with an automatic transmission,
shiT down toshiT ranges 2 2or 1 1in good time
so that the engine is running at a medium to
high engine speed (/ page 143).
R invehicles with a manual transmission, shiT
down toa lo werge ar in good time, so that the
engine is running at a medium tohigh engine
speed.
% Change the shiT range in good time when
cruise control or the limiter are activated.
Obser vethe driving tips (/ page 137).
Yo uth ereby make use of the braking e.ect of the
engine and do not ha vetobrake as oTen tomain-
ta in the speed. This relie vesth e load on the
service brake and pr events the brakes from over-
heating and wearing tooqu ickl y.
Hea
Hea vy and light loads
vy and light loads
If th e brakes ha vebeen subjected toa heavy load,
do not stop theve hicle immediatel y.Drive on for a
short while. The brakes cool down more quickly in
th e air0o w.
If th e brakes ha vebeen used only moderatel y,you
should occasionally test their e.ectiveness. Todo
th is, brake more /rmly from a higher speed while
paying attention tothe tra1c conditions. The
brakes will grip better as a result.
We
We t r
t road surf
oad surf aces
aces
If yo u ha vebeen driving for a long time in heavy
ra in without braking, there may be a dela yed
re sponse when you /rst apply the brakes. This may
also occur aTer driving thro ugh a car wash or deep
wa ter. Yo u must depress the brake pedal more
/rml y.Maintain a greater distance totheve hicle in
front.
While paying attention tothe tra1c conditions, you
should brake theve hicle /rml yaTer driving on a
we tro ad sur face or thro ugh a car wash. This heats
th e brake disks so that they dry more quickl y,
which pr otects them against cor rosion. 138 138
Driving and parking

Limited braking e.ect on salt-treated
roads:
R a layer of salt on the brake disks or brakepads
can increase braking distances considerabl y,
or braking may happen on only one side
R maintain an especially lar gesafe dis tance to
th eve hicle in front
To remo vethe la yer of salt:
R apply the brakes from time totime, paying
attention totra1c conditions
R careful lydepress the brake pedal at the end of
a journey and aTer the start of a new journey
N
N e
ew br
w br ak
ak e disk
e disk s and br
s and br ak
akepads
epads
Ne w brakepads and brake disks only reach their
optimal braking e.ect aTer appr oximately 100 km.
Until then, compensate forth ere duced braking
e.ect byapplying greater pressure tothe brake
pedal. For saf etyre asons, Mercedes-Benz recom-
mends that you only ha vebrakepads and brake
disks which are appr ovedby Mercedes-Benz instal-
led on your vehicle.
Other brake disks or brakepads may compromise
th e saf ety of your vehicle.
Alw aysre place all brake disks and brakepads on
an axle at the same time. Alw ays /t new brakepads
when replacing brake disks.
Inf
Inf or
ormation about dr
mation about dr iving onwe
iving on wet r
t roads
oads
Not
Not es on aq
es on aq uaplaning
uaplaning
Aq uaplaning can take place once a cer tain amount
of wa ter has accumulate d onthero ad sur face.
Obser vethefo llowing no tes during heavy precipi-
ta tion or in conditions in whi chaquaplaning may
occur:
R reduce your speed
R avoid tyre ruts
R avoid sudden steering mo vements
R brake careful ly
Also obser vethe no tes on regular lyinspecting
wheels and tyres (/ page 252).
Not
Not es on dr
es on dr iving t
iving thr
hrough w
ough w at
ater on r
er on r oads
oads
Wa ter which has entered theve hicle can damage
th e engine, electrics and transmission.
Wa ter can also enter the air intake /tting of the
engine and cause engine damage. Obser
vethefo llowing if you must drive thro ugh
wa ter:
R The water,when calm, may only reach the
lo we r edge of theve hicle body.
R Drive at walking pace at most; water can other-
wise enter theve hicle interior or engine com-
partment.
R Vehicles tr avelling in front, or oncoming vehi-
cles, can create waves which may exceed the
maximum permissible height of thewa ter
The braking e.ect of the brakes is reduced aTer
fo rd ing. Brake carefully while paying attention to
th e tra1c conditions until braking po wer has been
fully restored.
N
No ot
tes on dr
es on dr iving in mount
iving in mountainous ar ainous areas
eas
V
V ehicles wit
ehicles wit h diesel engines:
h diesel engines: the operating saf ety
of the diesel engine is guaranteed up toan ele va-
tion of 2,500 m abo vesea le vel.Yo u may exceed
th is ele vation for a short time, e.g. in mountainous
te rrain. Do not drive continuously at ele vations
abo ve2,500 m. Otherwise, you may damage the
diesel engine.
When driving in mountainous areas, no tethat
engine output, and therefore start-o. gradeability,
will decrease with increasing ele vation. The ECO
start/stop function is no longer available when
driving at ele vations higher than 2,500 m abo ve
sea le vel. Obser vethe no tes on braking on down-
hill gradients (/ page 138).
The maximum permissible trailer loads are valid for
journe ysat ele vations up to1,000 m abo vesea
le ve l with gradients up to12% (/ page 279). EC EC
O st
O st ar
art/st
t/st op function
op function Oper
Oper
ation of t
ation of t he EC
he ECO st
O star
art/st
t/st op function
op function &
W
WARNING
ARNING Risk of accident and injury due
to automatic engine starting
If th e engine was switched o. automatically
and youth en get out, it star ted again automati-
call y.The vehicle could pull away. #
Before leaving theve hicle, alw ays switch
o. theve hicle and secure theve hicle
against rolling away. Driving and parking
139
139

#
9-speed aut
9-speed aut omatic tr
omatic tr ansmission:
ansmission: Start the
ve hicle. #
Depress the brake pedal and engage neutral
i. #
Release the brake pedal. #
Switch o. theve hicle and lea vetheke y in the
ignition loc k.
Eng
Eng aging par
aging par k position P
k position P #
Press thej button on the DIRECT SELECT
le ve r when theve hicle is stationar y.
Pa rk position jis engaged automatically when
one of thefo llowing conditions is met:
R You switch o. theve hicle in transmission posi-
tion hork (9-speed automatic transmis-
sion).
R Ifyo ure mo vetheke y from the ignition loc k.
R You open the driver's door when theve hicle is
stationary or when driving at a very low speed
and in transmission position hork.
Eng
Eng aging dr
aging dr iv
ive position D
e position D #
Depress the brake pedal and push the DIRECT
SELECT le ver down wards past the /rst point of
re sis tance.
The automatic transmission shiTs thro ugh the indi-
vidual gears automatically when it is in transmis-
sion position h. This is de term ined bythefo llo w-
ing factors:
R The drive prog ram selected(/ page 144)
R ShiT range is limi ted (/ page 143)
R Position of the accelerator pedal
R Driving speed
R
R oc
oc king fr
king fr ee
ee
This function is only available forve hicles with 7-
speed automatic transmission.
At speeds of up to9 km/h you can switch back
and forth between transmission positions hand
k without applying the brakes. This helps when
ro ck ing theve hicle free out of snow or slush. #
Push the DIRECT SELECT le ver alternately
upwards and down wards past the /rst point of
re sis tance. R R
es
estr tricting t
icting t he
heshiT
shiT r
range
ange R
R
eq
eq uir
uir ements:
ements:
R Transmission position his engaged
(/ page 143).
R Drive prog ram A;or Cis selected
(/ page 144). #
T
To r
o r es
estrtrict t
ict t he
heshiT
shiT r
rang
ang e:
e:Brie0y pull the steer-
ing wheel gearshiT paddle 1.
The automatic transmission shiTs tothe next
lo we rge ar, depending on thege ar cur rently
engaged. The shiT range is also restric ted.
The selected shiT range is sh own in the inst ru-
ment cluster displa y.The automatic transmis-
sion shiTs only as far as the selected gear. #
Pull and hold the steering wheel gearshiT pad-
dle 1.
The automatic transmission will change to a
shiT range which all ows easy acceleration and
deceleration. Todo this, the automatic trans-
mission shiTs down one or more gears and
re stricts the shiT range.
The selected shiT range is sh own in the inst ru-
ment cluster displa y.The automatic transmis-
sion shiTs only as far as the selected gear.
% The automatic transmission does not shiT
down if you pull the steering wheel gearshiT
paddle 1whilst tr avelling at too high a
speed.
If th e maximum engine speed forth ere stric-
te d shiT range is reached and you continue to
depress the accelerator pedal, the automatic
transmission will shiT up automaticall y.This
pr otects against engine overrev. #
T To de-r
o de-r es
estrtrict t
ict t he
heshiT
shiT r
rang
ang e:
e: Brie0y pull the
stee ring wheel gearshiT paddle 2.
The automatic transmission shiTs tothe next
ge ar up, depending on thege ar cur rently
engaged. This de-restricts the shiT range at
th e same time. Driving and parking
143
143

front and
rear wind owsre paired at a
qu ali/ed specialist workshop. Ke
ep the areas of the cameras and sensors free of
dirt, ice and slush (/ page 232). The sensors and
cameras must not be co vered and the de tection
ra nges around them must be kept free. Do not
attach additional license pla tebrac kets, advertise-
ments, stic kers,fo ils or foils toprotect against
stone chippings in the de tection range of the sen-
sors and cameras. Make sure that there are no
ove rhanging loads pr otru ding into the de tection
ra nge.
In theev ent of damage, or following a se vere
impact, ha vethe function of the sensors checked
at a quali/ed specialist workshop. Ha vedamage or
stone chipping in the area of the cameras repaired
at a quali/ed specialist workshop. Ov
Ov
er
ervie
vie w of dr
w of dr iving syst
iving syst ems and dr
ems and dr iving safe
iving safety sy
ty sys-
s-
t
t ems
ems In
this section, you will /nd information about the
fo llowing driving systems and driving saf ety sys-
te ms:
R ABS (A Anti-lock B Braking S System) (/ page 153)
R BAS (BB ra ke A Assist S System) (/ page 153)
R ESP ®
(EElectronic S Stability P Program)
(/ page 153)
R EBD (E Electronic B Brakeforc e DDistribution)
(/ page 155)
R Active Brake Assist (/ page 155)
R Adaptive brake lights (/ page 157)
R Cruise cont rol (/ page 157) and limiter
(/ page 157)
R Active Distance Assist DISTRONIC
(/ page 161)
R Hill start assist (/ page 164)
R HOLD function (/ page 164)
R Parking Assist PARKTRONIC (/ page 165)
R Reversing camera (/ page 166)
R 360° Camera (/ page 168)
R Active Parking Assist (/ page 170)
R ATTENTION ASSIST (/ page 173)
R Tra1c Sign Assist (/ page 174)
R Blind Spot Assist (/ page 174)
R Lane Keeping Assist (/ page 176) F
F
unction of ABS (Anti-loc
unction of ABS (Anti-loc k Br
k Braking Syst
aking Syst em)
em) ABS controls
the brake pressure in critical situa-
tions:
R the wheels are pr evented from locking during
braking, forex ample at maximum full-stop
braking or when there is insu1cient tyre trac-
tion
R the steerability of theve hicle in term s of ph ysi-
cal 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 driving. F
F
unction of B
unction of B AS (Br
AS (Brak
ake Assis
e Assist Syst t System)
em) BAS
supports you with additional braking forc e in
an emer gency braking situation.
If yo u depress the brake pedal quickl y,BAS is acti-
va ted:
R BAS automatically boosts the braking forc e of
th e brakes
R BAS can shor tenth e braking distance
R ABS pr events the wheels from locking
When youre lease the brake pedal, the brakes
function as usual again. BASis deactivated. F
F
unction of ESP
unction of ESP ®
®
(Electr
(Electr onicSt
onic Stability Pr
ability Pr ogr
ogram)
am) &
W
WARNING
ARNING Risk of skidding if ESP ®
is deac-
tivated
If yo u deactivate ESP ®
, ESP ®
cannot car ryout
ve hicle stabilisation. #
ESP ®
should only be deacti vated in the
fo llowing situations. ESP
®
can, within ph ysical limits, monitor and
impr ovedriving stability and traction in thefo llo w-
ing situations:
R when driving and pulling away on wet or slip-
pery road sur faces
R when braking Driving and parking
153
153

R
Ifth e typical outline of a pedestrian cannot be
distinguished from the backg round.
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 row radius. A
A
ctiv
ctiv ating or deactiv
ating or deactiv ating A
ating Activ
ctive Br
e Br ak
ake Assist
e Assist On-board computer:
4 ò 5
Settings 5
Assistance
5 Active Brake Assist
% It isrecommended that Active Brake Assist is
alw ays leT activated. #
T
To activ
o activ at
ate/deactiv
e/deactiv at
ate:
e: press thea button.
The distance warning function and the autono-
mous braking function of Active Brake Assist
are deactivated or acti vated.
When the functions are deactivated, theæ
symbol appears in the assistance graphic in
th e inst rument cluster displa y.
The next time theve hicle is star ted, Ac tive Brake
Assist is automatically acti vated. F
F unction of A
unction of A dap
daptiv
tive Br
e Br ak
ake Lights
e Lights Ad
aptive brake lights warnfollowing tra1c in an
emer gency braking situation with thefo llowing sig-
nals:
R By 0ashing the brake lamps
R By activating the hazard warning lights
If th eve hicle is braked sharply from speeds abo ve
50 km/h, the brake lamps 0ash rapidl y.This pro-
vides tra1c tr avelling behind you with an even
more noticeable warning.
If th eve hicle is tr avelling at speeds of more than
70 km/h at the beginning of the brake application,
th e hazard warning lights switch on once theve hi-
cle is stationar y.When pulling away again, the haz-
ard warning lights switch o. automatically at
appr oximately 10 km/h.
Yo u can also switch o. the hazard warning lights
using the hazard warning button (/ page 108). Cr
Cr uise contr
uise contr ol and limit
ol and limit er
er F
F
unction of cr
unction of cr uise contr
uise control
ol
Cruise control accelerates and brakes theve hicle
automatically in order tomaintain a pr eviously
stored speed. If
yo u accelerate toove rtake, forex ample, the
stored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal aTer overtaking,
cruise cont rol will resume speed regulation back to
th e stored speed.
Yo u operate cruise control using the cruise control
le ve r.Yo u can store any speed abo ve30 km/h.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
Syst
Syst em limits
em limits
Cruise cont rol may be unable tomaintain the
stored speed on uphill gradients. The stored speed
is resumed if the uphill gradient evens out and the
ve 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 teof this when driving a laden vehicle.
By doing so, you will make use of the engine's
braking e.ect. This will take some of the strain o.
th e brake system and pr event the brakes from
ov erheating and wearing tooqu ickl y.
If yo uch ange wheel size on your vehicle, check it
is assigned tothe cor rect wheel size category
(/ page 260). If the category is changed without
re coding the control units in theve hicle, the func-
tioning of cruise control may be impaired.
Do not use cruise control in thefo llowing situa-
tions:
R in tra1c situations where frequent speed
changes are requi red, e.g. in heavy tra1c or on
winding roads
R o.-road or on construction sites
R on slippery or slick roads, as the drive wheels
can lose traction when accelerating and the
ve hicle can then skid
R ifth ere is poor visibility
F
F unction of t unction of t he limit
he limiter
er
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 a short-term or medium-term
re striction of the highest permissible speed,
e.g. in built-up areas
R Perm anent: for a long-term restriction of the
highest permissible speed, e.g. in winter tyre
mode Driving and parking
157 157

#
Brie0y pull the cruise control le ver in direction
3.
The last stored speed is called up and theve hi-
cle maintains this speed (cruise control) or
does not exceed it (variable limiter).
If th e last stored speed has pr eviously been
dele ted, the cur rently driven speed is stored.
% When you switch o. theve hicle, the last speed
stored is cleared.
Incr Incr easing or r
easing or r educing t
educing the speed
he speed #
Press the cruise control le ver up 1or down
4 asfar as the 1st pressure point.
The stored speed is increased or reduced by
1 km/h.
or #
Press the cruise control le ver up 1or down
4 beyond the 1st pressure point.
The stored speed is increased or reduced by
10 km/h.
If yo u ha veset Miles asthe unit forth e digital
speedome ter,yo u can maintain any speed from
20 mph (cruise cont rol) or set it as the limit speed
(variable limiter). You can then set the limit speed
in increments of 1 mph and 5 mph.
Deactiv
Deactiv ating cr
ating cr uise contr
uise contr ol or t
ol or the v
he var
ariable limit
iable limit er
er #
Brie0y press the cruise control le verfo rw ards
6.
or #
Press button 5.
The ¯ orÈ symbol and the stored
speed in the inst rument cluster display then go
out.
% Cruise control is deactivated in thefo llowing
situations:
R you apply the brakes.
R you drive below a speed of 30 km/h.
R you shiT the transmission toposition i.
R ESP ®
inter venes.
In these cases theva riable limi terre mains
activated.
If yo u deactivate ESP ®
, or ABS or ESP ®
is mal-
functioning, cruise control and the limiter are
deactivated.
% V Vehicles wit
ehicles wit h manual tr
h manual tr ansmission:
ansmission: ifthe
engine speed is very low, cruise cont rol or the
limiter is deactivated. When the transmission
is in neutral or the clutch pedal is depressed
fo r longer than six seconds, cruise cont rol is
deactivated. If cruise control automatically deactivates, a
warn-
ing tone sounds and theCruise control off mes-
sage appears brie0y in the inst rument cluster dis-
pla y.
Inf
Inf or
ormation on t
mation on t he per
he permanent limit
manent limit er
er
% The permanent limi ter is only available in cer-
ta in countries.
If th eve hicle should ne verex ceed a speci/c speed
(e.g. for driving in winter tyre mode), you can set
th is speed with the permanent limiter.
Yo u can permanently limit the speed toava lue
between 160 km/h and the maximum permissible
speed (/ page 159).
If yo u accelerate theve hicle using the accelerator
pedal, a message with the stored speed is shown
in the inst rument cluster display shortly before the
set limit speed is reached.
The permanent limi terre mains active even if the
va riable limi ter is deactivated. The permanent lim-
iter does not switch topassive mode even during
kickdown and the driven speed remains below the
set speed.
Se Se tting t
tting t he limit speed f
he limit speed f or wint
or winter tyr
er tyres
es
On-board computer:
4 ò 5
Settings 5
Vehicle
5 Limit speed (winter tyres) #
Change the setting and con/ rmusing thea
button.
By selecting Offyou switch o. the permanent
limiter. DSR (Do DSR (Do
wnhill Speed R
wnhill Speed R egulation)
egulation) N
No
ot
tes on DSR
es on DSR
DSR supports you when driving downhill. DSR
maintains a set speed foryo u on downhill gradi-
ents byapplying the brakes as requi red. Maintain-
ing the speed is dependent on thero ad sur face
conditions and the downhill gradient and cann ot
th erefore be guaranteed in all situations.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
Yo u can set the speed tobetween 4 km/h and
18 km/h using the brake and accelerator pedals
or the cruise control le ver.
DSR automatically controls in thefo llowing situa-
tions:
R Ifth eve hicle is stationar y,or its speed is less
th an 4 km/h , the speed is set to4 km/h or it Driving and parking
159
159

is set
tothe minimum speed forth ere specti ve
ge ar range.
R Ifyo u drive faster than 18 km/h o.-road, DSR
switches tostandby mode. DSR remains acti-
va ted, but does not brake automaticall y.
R Ifyo u drive downhill slo werth an 18 km/h, DSR
sets the speed tothe pr eviously set speed.
R Ifyo u drive faster than 45 km/h, DSR switches
o. automaticall y.
A
A ctiv
ctiv ating/deactiv
ating/deactiv ating DSR
ating DSR
R
R eq
eq uir
uir ements:
ements:
R you are driving at 40 km/h or theve hicle is
stationar y.
A
A ctiv
ctiv ating DSR
ating DSR #
Press the1 button.
The indicator lamp in the button is lit when
DSR is switched on. #
Brake or accelerate theve hicle tothe desired
speed between 4 km/h and 18 km/h. #
Release the brake or accelerator pedal.
The cur rent speed is stored. When stationar y,
4 km/h or the minimum possible speed for
each gear range is stored. DSR maintains the
stored speed on the downhill gradient and
brakes automaticall y.
When DSR is activated and theve hicle pulls away,
accelerates or brakes on an incline, the speed set
cor responds tothe speed at which the accelerator
or brake pedal is released or the cruise control
le ve r is operated during DSR regulation. This is
only the case if you are not driving faster than
18 km/h. DSR status displ
ayinthe on-board computer
R DSR is activ
DSR is activ at
at ed:
ed:
- f DSRandthe set speed appear in the
status area of the on-board computer.
R DSR is activ DSR is activ at ated, but is no
ed, but is no t int
t interv
ervening:
ening:
- You are driving between 18 km/h and
45 km/h.
- f DSRis not shown in the status area
of the on-board computer. In addition, the
f - - - km/h message appears brie0y.
DSR is in standby mode.
R DSR is inactiv
DSR is inactiv e:
e:
- As soon as youex ceed a speed of
45 km/h.
- f DSRis not shown in the status area
of the on-board computer. In addition, the
f Offmessage appears brie0y.
Se
Se tting t
tting t he speed while dr
he speed while dr iving do
iving downhill
wnhill
Yo u can set the speed tobetween 4 km/h and,
depending on thege ar range, up to18 km/h using
th e brake and accelerator pedals or the cruise
control le ver. #
Brake or accelerate theve hicle tothe desired
speed on the downhill gradient. #
Release the brake or accelerator pedal.
The cur rent speed is stored.
or #
During a DSR regulation, brie0y press the
cruise cont rol le ver up 1or down 2tothe
/r st pressu repoint.
The last stored speed is increased or reduced
in increments of 1 km/h. 160
160
Driving and parking

%
It may be a moment before theve hicle starts
to brake tothe set speed. Take this delay into
account when setting the speed with the
cruise cont rol le ver.
Deactiv
Deactiv ating DSR
ating DSR #
Press the1 button.
The indicator lamp in the button goes out.
% Ifyo u drive faster than 45 km/h, the DSR
switches o. automaticall y.A
A
ctiv
ctiv e Dist
e Dist ance Assis
ance Assis t DIS
t DISTR
TR ONIC
ONIC F
F
unction of A
unction of A ctiv
ctive Dist
e Dist ance Assis
ance Assis t DIS
t DISTR
TRONIC
ONIC
Ac tive Distance Assist DISTRONIC maintains the
set speed on free-0owing roads. If vehicles ahead
are de tected, the set distance is maintained, if
necessary until theve hicle comes toa halt. The
ve hicle accelerates or brakes, depending on the
distance totheve hicle in front and the set speed.
The speed and distance totheve hicle in front are
set and sa ved using the cruise control le ver.The
speed can be set in thera nge between 20 km/h
and 200 km/h.
Other features of Active Distance Assist
DISTRONIC:
R Depending on the preselected distance,
DISTRONIC inter venes either dynamically
(short distance) or tosave fuel (long distance).
R Depending on theve hicle mass de tected, the
dynamics of the DISTRONIC inter vention are
re duced.
R The driving style is adap ted depending on the
drive prog ram selected.
R Acceleration tothe stored speed is initiated if
th e turn signal indicator is switched on to
ch ange totheove rtaking lane. Obser
vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 152).
Syst
Syst em limits
em limits
The system may be impaired or may not function in
th efo llowing situations, forex ample:
R in sno w,rain, fog or heavy spr ay
R ifth ere is dirt on thera dar sensors or they are
co vered
R ifth ere is inter fere nce from radar sources or
strong radar re0ections, forex ample in multi-
stor eycar par ks
R in tra1c situations where frequent speed
changes are requ ired, e.g. in heavy tra1c or on
winding roads or o.-road
R onroads with steep downhill or uphill gradients
R on winding roads
The system cann otdetect stationary objects
unless these wereprev iously de tected as moving.
In addition, on slippery or slick roads, braking or
accelerating can cause one or se veral of the drive
wheels tolose traction and theve hicle can then
skid.
Do not use Active Distance Assist DISTRONIC in
th ese situations. &
W WARNING
ARNING Risk of accident from accelera-
tion or braking byActive Distance Assist
DISTRONIC
Ac tive Distance Assist DISTRONIC may accel-
erate or brake in thefo llowing cases, forex am-
ple:
R Ifth eve hicle pulls away using Active Dis-
ta nce Assist DISTRONIC.
R Ifth e stored speed is called up and is con-
siderably faster or sl owerthan the cur-
re ntly driven speed.
R IfAc tive Distance Assist DISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Always carefully obser vethe tra1c con-
ditions and be ready tobrake at all times. #
Take into account the tra1c situation
before calling up the stored speed. Driving and parking
161
161