
Driving and driving saf
ety sy stems Driving sy
stems and your responsibility 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 aids
and do not relie ve you of your responsibility per‐
ta ining toroad traf fic la w.Pay attention tothe
traf fic conditions at all times and inter vene
when necessa ry. Be aware of the limitations
re ga rding the safe use of these sy stems. Information on
radar and ultrasonic senso rsSome driving and driving sa
fety sy stems use
ra dar or ultrasonic sensors tomonitor the area
in front of, behind or next totheve hicle (depend‐
ing on theve hicle's equipment).
Depending on theve hicle's equipment, thera dar
sensors are integrated behind the bumpers
and/or behind the Mercedes star. The ultrasonic
sensors are located in the front and rear bump‐
ers. Keep these parts free of dirt, ice and slush
(/ page 509). The sensors must not be cov‐
ered, forex ample bybicycle rack s, ove rhanging loads,
sticke rs,fo il or foils toprotect against
st one chipping. Additional license plate brac kets
can li kewise impair the function of the ultrasonic
sensors. In theev ent of damage tothe bumpers
or radiator grille, or following a collision impact‐
ing the bumpers or radiator grille, ha vethe func‐
tion of the sensors checked at a qualified spe‐
cialist workshop. If the sensors are damaged,
some driving sy stems and driving saf ety sy stems
may no longer function proper ly. Overview of driving sy
stems and driving
saf ety sy stems In
this section, you will find information about
th efo llowing driving sy stems and driving saf ety
sy stems:
R 360° Camera (/ page275)
R ABS (A nti-lock Braking System)
(/ page 218)
R Active Dis tance Assi stDISTRONIC
(/ page 236)
R Adaptive Brake Lights (/ page 230)
R AIRMATIC (/ page 251) R
Active Brake Assi st (/ page 224)
R Active Lane Keeping Assist (/ page 294)
R Start-off assist (/ page 251)
R ATTENTION ASSIST (/ page 285)
R BAS (Bra keAssist System) (/ page218)
R Hill Start Assist (/ page249)
R DSR (Dow nhillSpeed Regulation)
(/ page 234)
R E-AC TIVE BODY CONTROL (/ page 255)
R EBD ( Electronic Brakeforc eDistribution)
(/ page 224)
R ESP ®
(Elect ronic Stability Program)
(/ page 219)
R Off- road ESP ®
(/ page 222)
R ESP ®
Crosswind Assist (/ page 223)
R ESP ®
trailer stabilisation (/ page 223)
R Speed Limit Assist (/ page 286)
R Active Speed Limit Assi st (/ page 240)
R HOLD function (/ page249)
R STEER CONTROL (/ page 224) Driving and parking
217

R
Activation byan abrupt steering mo vement
during a swerving manoeuvre.
R Assis tance du ring swerving and stra ightening
of theve hicle.
R Reaction from a speed of appr oximately
20 km/h up toa speed of appr oximately
70 km/h.
Yo u can pr eventthe assis tance at any time by
actively steering.
Cornering function (only vehicles with Driv‐
ing Assistance Package)
If a danger of collision from an oncoming vehicle
is de tected when turning across an oncoming
lane, au tonomous braking can be initia ted at
speeds below 15km/h be fore you ha veleft the
lane in which you are driving. &
WARNING Risk of an accident despi te
Evasive Steering Assist
Evasive Steering Assist cann otalw ays clearly
identify objects and complex traf fic situa‐
tions. In addition,
thesteering support of Evasive
St eering Assist is general lynot su fficient to
avo id a collision.
In such cases Evasive Steering Assist can:
R give an unnecessary warning or pr ovide
assis tance
R not gi veawa rning or not pr ovide assis‐
ta nce #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Ev asive
St eering Assist alone. #
Beready tobrake and take evasive
action, if necessar y. #
Preve ntthe assis tance byactively
st eering in non-critical driving situa‐
tions. #
Drive at an appropriate speed if pedes‐
trians are close tothe path of your vehi‐
cle. Sy
stem limits
Fu ll sy stem per form ance is not available for a
fe w seconds af ter switching on the ignition or
af te r driving off.
The sy stem may be impaired or may not function
in thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
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 displ ayed.
R If DSR is activated.
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. Driving and parking
229

th
e set speed. The speed and dis tance tothe
ve hicle in front are set and sa ved on thesteering
wheel on vehicles without the Driving Assis tance
Pa ckage, in thera nge between 20 km/h and
200 km/h and, on vehicles with the Driving
Assis tance Package, in thera nge between
20 km/h and 210 km/h.
Other features of Active Dis tance Assi st
DISTRONIC:
R Adjusts the driving style depending on the
selected drive program (fuel ef ficient, com‐
fo rtable or dynamic) (/ page194)
R Vehicles with Driving Assistance Pack‐
age: reacts tostationary vehicles de tected in
urban speed ranges (e xcept bicycles and
mo torcyc les).
R Initiates acceleration tothestored speed if
th e turn signal indicator is switched on to
ch ange totheove rtaking lane.
R Vehicles with Driving Assistance Pack‐
age: take s one-sided overtaking restrictions
into account on mo torw ays or on multi-lane
ro ads with separate car riag ewa ys(countr y-
dependent). Ve
hicles with Active Parking Assist and Driv‐
ing Assistance Package: ifth eve hicle has
been braked toast andstill on multi-lane, sepa‐
ra te car riag ewa ysby Active Dis tance Assi st
DISTRONIC, it can au tomatically follow theve hi‐
cle in front driving off again within 30 seconds. If
a critical situation is de tected when driving off, a
visual and acoustic warning is given indicating
th at the driver must now take control of theve hi‐
cle. The vehicle is not accelerated any fur ther.
Ac tive Dis tance Assi stDISTRONIC is only an aid.
The driver is responsible forke eping a safe dis‐
ta nce totheve hicle in front, forve hicle speed
and for braking in good time.
Sy stem limits
The sy stem may be impaired or may not function
in thefo llowing situations:
R In sno w,rain, fog, heavy spr ay, if there is
gl are, in direct sunlight or in great lyvarying
light conditions.
R Ifth ere is swirling dust, e.g. when driving off-
ro ad or on sandy sur faces. R
The windscreen in the area of the camera is
dirty, mis ted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi- stor ey car pa rks or on roads with
st eep uphill or downhill gradients.
R Ifth ere are nar rowvehicles in front, such as
bicycles or mo torcyc les.
In addition, on slippery roads, braking or accel‐
erating can cause one or se veral wheels tolose
traction and theve hicle could then skid.
Do not use Active Dis tance Assi stDISTRONIC in
th ese situations. &
WARNING Risk of accident from acceler‐
ation or braking byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC may accel‐
erate or brake in thefo llowing cases, for
ex ample:
R Ifth eve hicle pulls away using Active Dis‐
ta nce Assi stDISTRONIC. Driving and pa
rking 237

R
Ifth estored speed is called up and is
considerably faster or slo werth an the
cur rently driven speed.
R IfAc tive Dis tance Assi stDISTRONIC no
longer de tects a vehicle in front or does
not react toreleva nt objects. #
Alw ays carefully obser vethe traf fic con‐
ditions and be ready tobrake at all
times. #
Take into account the tra ffic situation
before calling up thestored speed. &
WARNING Risk of accident due toinsuf‐
fi cient decele ration byActive Dis tance
Assi stDISTRONIC
Ac tive Dis tance Assi stDISTRONIC brakes
yo ur vehicle with up to50 % of the maximum
possible deceleration. If this decele ration is
not su fficient, Active Dis tance Assi st
DISTRONIC alerts you with a visual and
acoustic warning. #
Inthese cases, adjust your speed and
ke ep a suf ficient di stance. #
Brake theve hicle yourself and/or take
ev asive action. &
WARNING Risk of accident if de tection
function of Active Dis tance Assi st
DISTRONIC is impaired
Ac tive Dis tance Assi stDISTRONIC does not
re act or has a limited reaction:
R when driving on a dif fere nt lane or when
ch anging lanes
R topedestrians, animals, bicycles or sta‐
tionary vehicles, or unexpected obs tacles
R tocompl extraf fic conditions
R tooncoming vehicles and crossing traf fic
As a result, Active Dis tance Assi st
DISTRONIC may nei ther give warnings nor
inter vene in su chsituations. #
Alw ays obser vethe tra ffic conditions
carefully and react accordin gly. Operating
Active Di stance Assist DIST RONIC
Re quirements:
R The vehicle has been star ted.
R The elect ric pa rking brake is released.
R ESP ®
is activated and is not inter vening.
R The transmission is in position h.
R All doors and the bonn etare closed.
R Check of thera dar sensor sy stem has been
successfully comple ted.
R Parking Assist PARKTRONIC is not being
used topark theve hicle or toexit from a
parking space.
R DSR is deactivated.
R The vehicle does not skid. 238
Driving and parking

Sy
stem limits
Ac tive Steering Assist has a limited steering tor‐
qu efo r lateral guidance. In some cases, the
st eering inter vention is not su fficient tokeep the
ve hicle in the lane or todrive thro ugh exits.
The sy stem may be impaired or may not function
in thefo llowing ins tances:
R The reis poor visibilit y,e.g. due tosno w,rain,
fo g, heavy spr ay, greatly varying light condi‐
tions or strong shado wsonthe car riag ewa y.
R There is glare, e.g. from oncoming traf fic,
di re ct sunlight or reflections.
R Insuf ficient road illumination.
R The windsc reen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by ast icke r.
R No, or se veral, unclear lane markings are
present for one lane, or the markings change
qu ickl y,e.g. in a const ruction area or junc‐
tions.
R The lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w. R
The dis tance totheve hicle in front is too
small and the lane markings thus cannot be
de tected.
R The road is nar row and winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R On tight bends and when turning.
R When crossing junctions.
R Atroundabouts or tollst ations.
R When towing a trailer.
R When actively changing lane without swit ch‐
ing on the turn signal indicator.
R When the tyre pressure is too lo w.
Depending on the selected vehicle settings,
Ac tive Steering Assist may be una vailable.
Obser vethest atus display of Active Steering
Assist in the multifunction display
(/ page 247). &
WARNING Risk of accident if Active
St eering Assist unexpectedly stops func‐
tioning
If th e sy stem limits of Active Steering Assist
are reached there is no guarantee that the
sy stem will remain active or will keep the
ve hicle in lane. #
Alw ayske ep your hands on thesteering
wheel and obser vethe tra ffic carefull y. #
Alw aysst eer theve hicle paying atten‐
tion totraf fic conditions. &
WARNING Risk of accident if Active
St eering Assist unexpectedly inter venes
A malfunction in the de tection of lane mark‐
ings and objects can occu r.
This could cause unexpected steering inter‐
ve ntion. #
Steer according totraf fic conditions. Ac
tivating/deactivating Active Steering
Assist
Re quirements: 244
Driving and pa rking

R
ESP ®
is acti vated, but is not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Quick access #
Select aAct. Steer. Asst .
Fu nction of Active Lane Change Assi st
% The following function is countr y-dependent
and only available in conjunction with the
Driving Assi stance Package.
Ac tive Lane Change Assi stsupports the driver
when changing lanes byapplying steering torque
if th e driver operates a turn signal indicator.
Assis tance when changing lanes is pr ovided if all
th efo llowing conditions are me t:
R You are driving on a mo torw ay orroad with
multiple lanes in the direction of tr avel.
R The neighbouring lane is separated bya bro‐
ke n lane ma rking.
R Novehicle is de tected in the adjacent lane. R
The driven speed is between 80 km/h and
180 km/h.
R Active Lane Change Assi stis switched on in
th e multimedia sy stem.
R Active Steering Assist is switched on and
active. If no
vehicle is de tected in the adjacent lane and
a lane change is permit ted, the lane change
begins af terth e driver has activated the turn sig‐
nal indicator. This is shown tothe driver with a
green ar row 2 next tothesteering wheel sym‐
bol. The Lane change to the left message also
appears, forex ample. If Active Lane Change
Assi sthas been activated with the turn signal indicator but a lane
change is not immediately
possible, a gr eyarrow 1appears next tothe
st eering wheel symbol, which remains green.
When the lane change assis tance starts, the turn
signal indicator is automatically activated along
with the display in the multifunction displa y.
If th e assis tance graphic is shown when chang‐
ing lanes, the lane change display appears with
an additional ar rowpointing towa rdsth e adja‐
cent lane (/ page247).
If a lane change is not possible, the ar row fades
out af ter a few seconds and a new lane change
must be initiated. An immediate lane change is
on lypossible on mo torw ay sections without
speed limits.
If th e sy stem is impaired, Active Lane Change
Assi stmay be cancelled. If it is cancelled, the
Lane change cancelled message appears inthe
multifunction display and a warning tone sounds. &
WARNING Risk of accident from chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways detect
clearly if the adjacent lane is free. Driving and parking
245

The lane
change might be initiated although
th e adjacent lane is not free. #
Before changing lanes, make sure that
th e neighbouring lane is free and there
is no danger to otherroad users. #
Monitor the lane change. &
WARNING Risk of accident if Lane
Change Assi stunexpectedly stops func‐
tioning
If th e sy stem limitations for Lane Change
Assist ha vebeen reached, there is no guar‐
antee that the sy stem will remain active.
Lane Change Assist cannot then assist you
by applying steering torques. #
Alw ays monitor the lane change and
ke ep your hands on thesteering wheel.
Obser vethe tra ffic conditions and steer
and/or brake if necessar y. Sy
stem limits
The sy stem limitations of Active Steering Assist
apply toActive Lane Change Assi st
( / page 243).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors in there ar bumper are dirty,
damaged or co vered, for ins tance by a
st icke r or ice and sno w.
R The exterior lighting is malfunctioning.
Ac tivating/deactivating Active Lane Change
Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Active Lane Change Assist #
Activate or deacti vate the function.
Fu nction of Active Eme rgency Stop Assist
If th e driver continually ignores the visual or
acoustic warning toput their hands on thesteer‐
ing wheel, theBeginning emergency stop mes‐
sage appears in the multifunction displa y.Ifthe
driver still does not respond, Active Dis tance Assi
stDISTRONIC reduces the speed. The vehi‐
cle is decelerated in stages toast andstill.
Depending on the count ry, at speeds below
60 km/h the hazard warning lights switch on
automaticall y.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R theve hicle is secured with the electric park‐
ing brake
R Active Dis tance Assi stDISTRONIC is ended
R theve hicle is unloc ked
R if possible, an emer gency call is placed to
th e Mercedes-Benz emer gency call centre
The driver can cancel the deceleration at any
time byper form ing one of thefo llowing actions:
R steering
R braking or accelerating
R pressing a steering-wheel button
R operating Touch Control
R activating or deactivating Active Dis tance
Assi stDISTRONIC 246
Driving and pa rking

R
The vehicle is secured with the electric park‐
ing brake.
In thefo llowing situations, theve hicle is held by
transmission position jorby the electric park‐
ing brake:
R The seat belt is unfas tened and the driver's
door is opened.
R The vehicle is switched off.
R There is a malfunction in the sy stem or the
po we r supp lyis insuf ficient. St
art-off assi st Fu
nction of thest art-off assi st
The start-off assist enables optimal vehicle
acceleration from a standstill. Forth is, a suitably
high- grip road sur face is required, the tyres and
ve hicle must also be in good condition.
Do not activate thest art-off assist on public
ro ads.
Be sure toobser vethe saf ety no tes and informa‐
tion on ESP ®
. Ac
tivating the start-off assi st &
WARNING Risk of skidding and having
an accident from wheels spinning
When you use start-off assist, individual
wheels could spin and you could lose cont rol
of theve hicle.
If ESP ®
is deactivated, there is a risk of skid‐
ding and accident! #
Make sure that no persons or obstacles
are in the close vicinity of your vehicle. #
Deactivating ESP ®
(/ page 222). #
Movethesteering wheel tothest ra ight-
ahead position. #
Depress the brake pedal firm ly wi thyour left
fo ot and keep it depressed. #
Enga getheh drive position (/ page199). #
Select the sportiest available drive program
B orC(/ page195). #
Rapidly depress the accelerator pedal full y. #
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera‐
tion. #
Swit chon ESP ®
once the acceleration proce‐
dure is comple te. ESP ®
will otherwise not be
able tostabilise theve hicle if theve hicle
st arts toskid or a wheel starts tospin.
Cancelling thest art-off assi st #
Remo veyour foot from the accelerator pedal. #
Reactivate the ESP ®
. AIRMATIC
Fu
nction of AIRMATIC
AIRMATIC is an air suspension sy stem with varia‐
ble damping for impr oved driving comfort and
ve hicle dynamics. The all-round le vel control sys‐
te m ensures the best possible suspension and
const ant ground clearance, even wi tha laden
ve hicle. When driving at speed, theve hicle is
lo we red automatically toimpr ove driving saf ety
and toreduce fuel consum ption. You also ha ve Driving and pa
rking 251