
you
determ ine by thepos ition ofthe
acc eler ator pedal .
Act ivating when drivin gto war dsa
st at iona ryveh icle
If th eveh iclein fron to fyou isstation ary,you
can only activate DISTRONIC PLUSonceyour
vehicle isstation aryaswell.
X Briefly pullthecruise controllever towards
you ?,orbriefly pressup: ordown ;.
DIS TRONIC PLUSisselected. i
DIS
TRONIC PLUScanonly beactivated at
under 20mph (30km/ h)ifav ehicle infron t
has been detec ted.Therefor e,the
DIS TRONIC PLUSdistanc edisplay inthe
inst rument clustershouldbeactivat ed
(Y page 232).
X Keep thecruise control lever pressed
up : ordown ;until thedesired speed
is set. i
You
canusethecruise control lever toset
the stor edspeed andthecontrol onthe
cruise control lever toset the specified
minimum distance(Y page 176).
Activating atthe curr entspeed/last
stored speed G
WARN
ING The
setspeed storedinmemory shouldonly
be set again ifprevailing roadconditions and
legal speed limitspermit .Possible
acceleration ordeceleration differences
arising fromreturn ingtothe preset speed
could cause anaccident and/orserious injury
to you and others.
X Briefly pullthecruise controllever towards
you ?.
X Remove yourfootfrom theaccelerator
pedal.
DIS TRONIC PLUSisactivated. Thefirst
time itis activated, thecurrent speedis
stored. Otherwise, itsets thevehicle cruise
speed tothe previously storedvalue. Display
whenDISTRONIC PLUSis
activat ed DIS
TRONIC PLUSdisplay sin the speedometer
When DISTRONIC PLUSisactivated, oneor
two segment s; inthe setspeed rangelight
up. i
For
design reasons, thespeed display ed
in the speedometer maydiffer slightly from
the speed setforDIS TRONIC PLUS.
If DIS TRONIC PLUSdetect savehicle infron t,
segmen ts; between speedofthe vehicle in
fron t: and storedspeed =light up. Dist
ance display withDISTRONIC PLUSactivat ed
in the multifunc tiondisplay
: DISTRONIC PLUSactivat ed
; Own vehicle
= Specif iedminimum distanceto the
vehicle infron t;adjustable
? Vehicle infron t,ifdetec ted
You canselect thedistanc edisplay inthe
Ass istanc emen u(Y page 232)of the on-
board computer . Driving
systems
173Driving and parking Z

X
Sel ect the Dis
tanceDisplay functi
on
us ing the on-bo ardcomp uter
(Y page 232) . i
Yo
uwi llsee thestore dspe edfor abou t
fiv eseco ndswhen youacti vate DISTR ONIC
PLU S.
Dri vin gwi th DISTRONI CPL US Pul
ling awa y
X Ifthe vehic lein fron tpulls away: remove
you rfoot from thebrake pedal.
X Briefly pullthecruise controllever
(Y page 172)towards you.
or
X Acc elerate briefly.
Your vehicle pullsaway andadapts its
speed tothat ofthe vehicle infront .
Driving G
WARNIN
G If
you depress thebrake, DISTRONIC PLUSis
deactivated unlessyourvehicle isstation ary.
DIS TRONIC PLUSthennolonger brakes your
vehicle. Insuch cases, controlthe distance
from vehicles travelling infront withthebrake
alone. Youcould otherwise causeanaccident
and thereby injureyourself andothers. The
driver remains fullyresponsible forthe
vehicle's distancefromother vehicles, the
speed beingdriven andforbraking ingood
time.
If there isno vehicle infront ,DIS TRONIC
PLUS operates inthe same wayascruise
cont rol.
If DIS TRONIC PLUSdetect sthat thevehicle
in front hasslowed down,itbrakes your
vehicle. Inthis way, thedistance youhave
selected ismaintained.
If DIS TRONIC PLUSdetect sthat thevehicle
in front hasincreased speed,itincreases your
driving speed,butonly uptothe speed you
have stored. Changing
lanes
If you wish tochange tothe passing lane(in
count rieswith right- hand traffic ,the passing
lane isthe left- hand lane), DISTRONIC PLUS
supports youif:
R you aredriving fasterthan40mph
(60 km/ h).
R DIS TRONIC PLUSismaintainin gthe
distance toavehicle infront .
R you switch onthe appropriate turnsignals.
R DIS TRONIC PLUSdoesnotdetect adanger
of collision.
If these condit ionsaremet, yourvehicle is
accelerated. Acceleration willbeinter rupted
if changing lanestakes toolong orifthe
distance between yourvehicle andthe
vehicle infront becomes toosmall. G
WARNIN
G DIS
TRONIC PLUSandActiveBlind SpotAssist
are only aidsdesigned toassist driving.
They donot relieve youofthe responsibility
of paying attention.Thedriver remains fully
responsible forthe vehicle's distancefrom
other vehicles, thevehicle's speedandfor
braking ingood time. Always payatten tionto
traffic conditionsandyour surroundings.
Otherwise, youmay failtorecogn izedangers
in time, cause anaccident andinjure yourself
and others.
Vehicles withCOMAND i
The
following functionisnot operational
in all count ries.
DIS TRONIC PLUSusesadditional information
from yournavigation systemsothat itcan
react appropriately tocert aintraffic
situations. Thisisthe case if,while following
a vehicle, DISTRONIC PLUSisactive andyou:
R approach ordrive through atraffic circle
R approach aTinter section
R turn offatafreeway exit
Even ifthe vehicle infront leaves the
detect ionrange, DISTRONIC PLUS
temporarily maintainsthecurrent driving 174
Driving
systemsDriving and parking

There
areseveral waystodeactivate
DIS TRONIC PLUS:
X Briefly pressthecruise controllever
forwards :.
or
X Brake, unless thevehicle isstation ary.
When youdeactivate DISTRONIC PLUS,the DISTRONIC
PLUSOff message
isshown in
the multifunct iondisplay forapproximately
five seconds. i
The
lastspeed stored remains storeduntil
you switch offthe engine. i
DIS
TRONIC PLUSisnot deactivated ifyou
depress theaccelerator pedal.Ifyou
accelerate toovert ake,DISTRONIC PLUS
adjusts thevehicle's speedtothe last
speed stored afteryouhave finished
overt aking.
DIS TRONIC PLUSisautomatically
deactivated if:
R you engage theelectric parking brakeorif
the vehicle isautomatically securedwith
the electric parking brake
R you aredriving slowerthan
15 mph (25km/ h)and there isno vehicle
in fron t,or ifthe vehicle infron tisno longer
detected
R ESP ®
interven esoryou deactivate ESP®
.
R the transmission isin the P,Ror Nposition.
R you switch offthe radar sensor system
(Y page 236).
R you pull thecruise controllever towards
you inorder topull awayand the front- pa
sse nge rdoor orone ofthe rear doors is
open.
R you activate DSR.
R the vehicle hasskidded.
If DIS TRONIC PLUSisdeactivated, youwill
hear awarning tone.The DISTRONIC
PLUS Off message
isshown inthe multifunct ion
display forapproximately fiveseconds.
You canselect thedistance displayinthe
Assist ancemenu (Ypage 232)ofthe on-
board computer. Distan
cedisplay whenDISTRONIC PLUSis
deactivated
: Vehicle infront ,if detect ed
; Distan ceindicator, currentdistance to
the vehicle infront
= Specified minimum distancetothe
vehicle infront ;adjustable
? Own vehicle
X Select the Distance
Display funct
ion
using theon-board computer
(Y page 232).
Tips fordriving withDISTRONIC PLUS Import
antsafety notes G
WARNIN
G The
DISTRONIC PLUSworks tomaintain the
speed selected bythe driver unless amoving
obstacle proceeding directlyaheadofitin the
same travel direction isdetect ed(e.g.
following anothervehicleaheadofyou atyour
set distance). Driving
systems
177Driving and parking
Z

because
ofits narro wwidth. Thedistan ceto
the vehicle infron twillbe too shor t.
Obst ructions andstationa ryvehicles DI
STRON ICPLUS doesnotbrak efor
obst acles orstation aryvehic les.If,for
exam ple,thedete cted vehic letur ns acor ner
and reve alsanobst acle orstation aryvehic le,
DI STRON ICPLUS willnotbrak efor these.
Crossin gvehicles DI
STRON ICPLUS maymistaken lydete ct
vehic lesthat arecrossin gyour lane.
Ac tivatin gDI STRON ICPLUS attraffic lights
with crossin gtr affic ,for exam ple,could cause
your vehic leto pull away unintention ally. HOLD
function
Gener alnotes The
HOL Dfunc tion can assis tthe driver inthe
following situations:
R when pullingaway ,especiall yon steep
slopes
R when maneuvering onsteep slopes
R when waiting intraffic
The vehicle iskept stationary withoutthe
driver having todepress thebrake pedal.
The braking effectiscanceled andtheHOLD
funct iondeactivated whenyoudepress the
accelerator pedaltopull away .
Activation conditions You
canactivate theHOLD functionif:
R the vehicle isstationary.
R the engine isrunning.
R the driver's doorisclosed orifyour seat
belt isfastened.
R the electric parking brakeisreleased.
R the transmission isin position D,Ror N.
R DIS TRONIC PLUSisdeactivated.
Activating theHOLD function X
Make surethattheactivation conditions
are met.
X Depress thebrake pedal. X
Quickly depress thebrake pedalfurther
until HOLD displa
y: appea rsinthe
multifunction display.
The HOLD functionisactivated. Youcan
release thebrake pedal. Driving
systems
179Driving and parking Z

If
indicator lamp;islit:
X Press button :.
Indicator lamp;flash es.The vehicle is
adjus tingtohighw ay/high-spee dlevel .
Whil ethe adjus tment istaking place, a
messag eapp ears inthe multifu nction
disp lay,e.g.: If
you press the% ora button onthe
multifu nctionsteering wheel,the messag e
wil ldisa ppea r.
Once highw aylevel hasbeen reached ,
indicator lamp;goes out.The Lowering
messag
edisa ppea rsfrom themultifu nction
disp lay.
The vehicle automaticallyselects highway
level ifyou aredriving ataspeed above
50 mph (80km/h) orifyou drive for
app roximately 20seconds between40m ph
(64 km/ h)and 50mph (80km/ h).Depen ding
on the ADSm ode selected (Ypage 180), the
vehicle islowered tohigh-speed levelat
higher speeds. PARKTRON
IC
Import antsafety notes G
WARNIN
G The
PARKTRONIC isasupplemental system.
It is not inten dedto,nor does itreplace, the
need forextr eme care. Theresponsibility
during parking andother criticalmaneuvers
alway sremains withthedriver. G
WARNIN
G Make
surenopersons oranimals areinor
near thearea inwhich youareparking/ maneuvering.
Otherwise,theycould be
injured.
PARKTRONIC isan electron icparking aidwith
ultrasonic sensors.Itindicates visuallyand
audib lythe distance between yourvehicle
and anobject .
PARKTRONIC isactivated automatically when
you:
R switch onthe ignition
R shift thetrans mission toposition D,Ror N
R release theelectric parking brake
PARKTRONIC isdeactivated atspeeds above
11 mph (18km/ h).It is reactivat edatlower
speeds.
PARKTRONIC monitorsthe area around your
vehicle usingsixsensors inthe front bumper
and four sensors inthe rear bumper. :
Sensor sin the front bumper, left-hand
side (example)
Range ofthe sensors General
notes
The sensors mustbefree ofdirt, iceand
slush; otherwise theymaynotfunct ion
correc tly.Clean thesensors regularly ,takin g
care nottoscratc hor damage them
(Y page 322). Driving
systems
183Driving and parking Z

Problems
withPARKTRONIC Problem Possible
causes/co nsequences andM Solutions
Only
thered segments
in the PARKTRONIC
warning displaysare lit.
You also hear awarning
tone forapproximately
two seconds.
PARKTRONIC is
deactivated after
approximately
20 seconds, andthe
indicator lampinthe
PARKTRONIC button
lights up. PARKTRONIC
hasmalfunction edand hasswitched off.
X Ifproblems persist,havePARKTRONIC checkedataqual ified
specialist workshop. Only
thered segments
in the PARKTRONIC
warning displaysare lit.
PARKTRONIC is
deactivated after
approximately 20
seconds. The
PARKTRONIC sensorsaredirty orthere isinterf erence.
X Clea nthe PARKTRONIC sensors(Ypage 322).
X Switch theignition backon. The
problem maybecaused byan extern alsource ofradio or
ultrasound waves.
X See ifPARKTRONIC functionsinadifferent location. Active
Parking Assist
Import antsafety notes Act
ive Parking Assistisan electronic parking
aid with ultrasound. Ultrasoundisused to
measure theroad onboth sides ofthe vehicle.
As uitable parkingspac eis ind icat edbythe
park ingsymb ol.Active steer ing interv ention
can assis tyou during parking. Youmay also
use PARKTRONIC (Ypage 183). When
PARKTRONIC isswitched off,Active Parking
Assist isalso unavailab le. G
WARNIN
G Act
iveParking Assistismerely anaid and may
sometimes recommendparking spacesthat
are not suitable forparking. Forexample,
these might bespaces whereparking is
prohibited, driveways,unsuitablesurfaces,
etc. Act
ive Parking Assistmeasures theparking
space asyou drive pastit.Any later changes
to the parking spacearenot taken into
account .For instan ce,this may bethe case
when thevehicle parkedinfront ofor behind
the space changes itsposition orwhen an
obstacle ismoved intotheparking space.
Act ive Parking Assistdoesnotrelieve youof
the responsibility ofpaying attention.Ifyou
rely solely onAct ive Parking Assist,you could
cause anaccident andinjure yourself and
others.
You arealway sresponsible forsafety and
must continue topay atten tiontoyour
immediate surroundings whenparking and
maneuvering. 186
Driving
systemsDriving and parking

G
WARNING Objects
locatedabovethe heig htrange of
Active Parking Assistwillnot bedetected
when theparki ngspace ismeasu red.These
are not taken intoaccount whentheparki ng
proced ureiscalcu lated,e.g. overha nging
loa ds, tail sections orloa ding ramps ofgood s
vehicl es.Insome circumsta nces,Active
Parking Assistmaytherefore guide you into
the parki ngspace tooearly.This may leadto
a colli sion. Forthis reaso n,you shou ldavoi d
usi ng Active Parking Assistinsuch situations. G
WARNING The
front ofthe vehicl ewil lveer outinthe
dire ction ofthe oncoming trafficduringthe
parki ngopera tion.Insome cases, thevehicl e
wil lals otake youonto sections ofthe
oncoming laneduringthe parki ngproced ure.
You arerespo nsiblefor safety atall times and
must payattention toany road users
app roachi ngorpass ing.Stop thevehicl eif
necessa ryor cancel theActive Parking Assist
parki ngproced ure. G
WARNING Make
surenoperso nsoranima lsare inor
near thearea inwhi chyou areparki ng/
maneu vering. Otherwi se,they couldbe
injured .
Use Active Parking Assistforparki ngspa ces:
R that arepara llelto the direction oftravel
R that areonstraig htroad s,not bends
R that areonthe same levelas the road ,e.g.
not onthe pave ment
Parking tips:
R on narrow roads,drive pastthe parking
space asclose aspossible.
R parking spacesthatarelittered, overgrown
or partially occupied bytrailer drawba rs
might beidentified incorrectlyornot atall.
R snowfall orheavy rainmay lead toaparking
space beingmeasured inaccurately. R
pay attent iontothe PARKTRONIC
(Y page 184)warning messages duringthe
parking procedure.
R you can interven ein the steering procedure
to correct itat any time. Active Parking
Assist willthen becanceled.
R when transport ingaload which protrudes
from yourvehicle, youshould notuse
Act ive Parking Assist.
R never useActiveParking Assistwhensnow
chains oran emergency sparewheel are
mounted.
R make surethatthetire pressures are
alwa yscorrect .This has adirec tinflu ence
on the parking characteri stics ofthe
veh icle.
R the wayyo ur veh icleis po sitio ned inthe
pa rking spaceafter parking isde pende nt
on vario us factors .These include the
position andshape ofthe vehicles parked
in front andbehind itand thecondition sof
the location. Insome cases, Active Parking
Assist mayguide youtoofarinto aparking
space, ornot farenough intoit.Insome
cases, itmay alsolead youacross oronto
the curb. Ifnecessary, youshould abortthe
parking procedure withActive Parking
Assist.
R you can also engage forward gear
prematurely. Thevehicle redirects and
does notdrive asfar into theparking space.
Should thegear change occurtoosoon to
achieve asensible parkingposition, the
parking procedure willbeaborted.
! Ifunavoidabl e,you should driveover
obstacles suchascurbs slowly andnotat
a sharp angle. Otherwise, youmay damage
the wheels ortires.
Detecting aparking space Active
ParkingAssist isswi tched on
au tomatica llywhe ndriving forwards.The
system isopera tional atspee dsofup to
app roximatel y22 mph (35km/h). Whilein
opera tion,thesystem independently locates Drivi
ngsystems
187Driving and parking Z

and
meas uresparkingspac eson bot hsides
of theveh icle.When driving atspeeds below
19 mph (30km/h), youwillsee theparking
symbol asastatus indicator inthe instrumen t
cluster. Bydefault, Active Parking Assistonly
displa ysparking spacesonthe front -
passenger side.Parking spacesonthe
driver's sidearedispla yedassoon asthe turn
signal onthe driver's sideisactivated. Ifyou
wish topark inaspace onthe driver's side,
the indicator onthe driver's sidemust remain
on. This must remain switched onuntil you
acknowledge theuse ofAct iveParking Assist
by pressing thea button onthe
multifunction steeringwheel.
When aparking spacehasbeen detect ed,an
arrow towards theright orthe left also
appea rs. :
Detec tedparking spaceonthe left
; Parking symbol
= Detec tedparking spaceonthe right
Act ive Parking Assistwillonly detect parking
spaces:
R that areparall elto the direction oftravel
R at least 59in(1.5 m)wide
R at least 51in(1.3 m)longer thanyour
vehicle
Ap arking spac ewill bedispl ayed toyou as
you driveby unt ilyou areappro ximately50 ft
(15 m)away from it.
Par king G
WAR
NING PA
RKTRO NICandActivePark ingAssist are
mer elypark ingaids andmay notd etec tall
obst acles. Theydonot reliev eyou ofthe
respo nsibilit yof paying attent ion. You
arealways responsible forsafet yand
must continue topay attent ion toyour
immed iatesurro undin gswhen parkingand
mane uverin g.You could otherwise endanger
yourself andothers.
X Stop the vehic lewhen thepark ingspace
symbol showsthedesired parkingspace in
the instrumen tclust er.
X Shif tthe transmission toposition R.
The Start
ParkAssist? Yes:OKNo: %
message appearsinthe multifunction
displa y.
X To cancel theprocedur e:press the
% button onthe multifunction steering
wheel orpull away .
or
X To par kusing Active ParkingAssist:
press thea button onthe multifunc tion
steerin gwheel.
The Park
Assist ActiveAccelera te and
Brake Observe Surroundings message
appearsinthe multifunc tion
display. G
WARNIN
G When
parking, youneed tomake surethatno
obstacles arelocated inthe vicinit yof the
vehicle duringtheentireoperation. Active
Parking Assistdoesnotrelieve youofthe
respons ibilityofpaying attention.Itmerely
aids youbyinter venin gactively inthe
steerin g.
To stop thevehicle ortoavoid anaccident ,
you need toapply thebrakes yourself.
X Let goofthe multifunc tionsteerin gwheel.
X Back upthe vehicle, beingready tobrake
at all times. Donot exceed aspeed of
approximately 6mph(10 km/ h)while
backin gup; Active Parkin gAssist will
other wisebecanc eled. i
In
tight parkin gspaces, youwillachieve
the best parkin gresults bybackin gup as 188
Driving
systemsDriving and parking