Other
features of Active Distance Assist
DISTRONIC:
R Adjusts the driving style depending on the
selected drive prog ram (fuel-saving, comfor ta-
ble or dynamic) (/ page 211)
R Initiates acceleration tothe stored speed if the
turn signal indica tor is switched on tochange
to theove rtaking lane
R Reacts tostationa ryvehicles de tected in
urban speed ranges (e xcept bicycles and
mo torc yc les)
R Take s one-sided overtaking restrictions into
account on mo torw ays or on multi-lane roads
with separate car riag ewa ys(countr y-depend-
ent)
A
A dditional function av
dditional function available in cert
ailable in cert ain countr
ain countries:
ies:
if Ac tive Distance Assist DISTRONIC has braked
th eve hicle toa standstill, it can automatically fol-
low theve hicle in front when driving o. again
within 30 seconds. If a critical situation is de tec-
te d in the sur rounding area when driving o., such
as a person in theve hicle path, a visual and
acoustic warning is given indicating that the driver must now
take cont rol of theve hicle. The vehicle
is not accelerated any furt her.
Ac tive Distance Assist DISTRONIC is ready topull
aw ay when thegr een ç vehicle symbol 0ashes
cyclical ly.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 228).
Displa
Displa y in t
y in the dr
he dr iv
iver's displa
er's displa y in t
y in the
heAssistance
menu
menu 1
Vehicle in front
2 Distance indicator
3 Set speci/ed distance Ve
hicle de tected in front 1is highlighted in
gr een. It may also be in the lane tothe leT of your
ve hicle in situations where it is not permitted to
ove rtake on theright, forex ample on mo torw ays.
P
P er
er manent st
manent st atus display
atus display
R ç (gre y): Active Distance Assist
DISTRONIC selected but not yetactive
R ç (gre en speedome ter,white vehicle):
Ac tive Distance Assist DISTRONIC active,
speed set
R ç (gre en): Active Distance Assist
DISTRONIC active andvehicle de tected
The stored speed is shown under the permanent
status display and highlighted on the speedome-
te r. When Active Distance Assist DISTRONIC is
passive, the status display is grey ed out.
If th e speed of theve hicle in front or the speed
adjustment is less than the stored speed due to
th ero ute event ahead, the segments in the
speedome ter light up.
When the set speci/ed distance is increased or
decreased, theÒ display brie0y appears under
th eve hicle in the permanent status displa y.238
238
Driving and parking
%
On mo torw ays or high-speed major roads, the
gr een ç vehicle symbol is displ ayed cycli-
cally when theve hicle is ready topull away.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Distance Assist
DISTRONIC, the system is switched topassive
mode. The çsuspended message
appears in the driver's displa y.
Syst
Syst em limits
em limits
The system may be impaired or may not function
in thefo llowing situations, forex ample:
R In sno w,rain, fog, heavy spr ay, if there is glare,
in direct sunlight or in greatly varying light
conditions.
R The windscreen in the area of the camera is
dirty, misted up, damaged or co vered.
R Ifth era dar sensors are dirty or co vered.
R In multi-s tore y car par ksor on roads with
steep uphill or downhill gradients.
R Ifth ere are nar row vehicles in front, such as
bicycles or mo torc yc les. In addition, on slippery
roads, braking or acceler-
ating can cause one or se veral wheels tolose
traction and theve hicle could 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, for
ex ample:
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 owerth an 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. &
W
WARNING
ARNING Risk of accident due toinsu1-
cient deceleration byActive Distance
Assist DISTRONIC
Ac tive Distance Assist DISTRONIC brakes your
ve hicle with up to50% of the possible deceler-
ation. If this deceleration is not su1cient,
Ac tive Distance Assist DISTRONIC alerts you
with a visual and acoustic warning. #
Adjust your speed and maintain a suita-
ble distance from theve hicle in front. #
Brake theve hicle yourself and/or take
ev asive action. Driving and parking
239
239
Syst
Syst
em limits
em limits
The system limits of Tra1c Sign Assist apply to
th e de tection of tra1c signs (/ page 255).
Speed limits below 20 km/h are not automatical ly
adop tedby the system as the stored speed. Tem-
porary speed restrictions (e.g. for a cer tain time
or due towe ather conditions) cann otbe proper ly
de tected bythe system. The maximum permissi-
ble speed applying toave hicle with a trailer is not
de tected bythe system.
Ad just the speed in these situations. &
W
WARNING
ARNING Risk of accident due toActive
Speed Limit Assist adapt ingtheve hicle's
speed
The speed adop tedby Active Speed Limit
Assist may be too high or incor rect in some
individual cases, such as:
R at speed limits below 20 km/h
R inwe t conditions or in fog
R when towing a trailer #
Ensure that the driven speed complies
with tra1c regulations. #
Adjust the driving speed tosuit cur rent
tra1c and weather conditions. F
F
unction of r
unction of r out
oute-based speed adapt
e-based speed adapt ation
ation
When Active Distance Assist DISTRONIC is activa-
te d, theve hicle speed will be adap ted accordingly
to thero ute events ahead. Depending on the drive
prog ram selected, theve hicle neg otiates a route
ev ent ahead in a fuel-saving, comfor table or
dynamic manner. When thero ute event has been
passed, theve hicle accelerates again tothe
stored speed. The set distance totheve hicle in
front, vehicles de tected ahead and speed restric-
tions ahead are take n into account.
Ro ute-based speed adap tation can be activa ted in
th e multimedia system (/ page 244).
The following route events are take n into account:
R Bends
R Roundabouts
R T-junctions
R Turns and exits R
Tra1c jams ahead (only with Live Tra1c )
Also, the speed is reduced if the turn signal indi-
cator is switched on and one of thefo llowing sit-
uations is de tected:
R Turning o. at junctions
R Driving on slowing-down lanes
R Driving on lanes adjacent toslowing-down
lanes
The driver is responsible forch oosing theright
speed and observing other road users. This
applies in particular tojunctions, roundabouts and
tra1c lights, as route-based speed adap tation
does not brake theve hicle toa standstill.
If a cor responding route event is de tected while
ro ute guidance is active, the /rst speed adjust-
ment is car ried out automaticall y.Ifth e turn signal
indicator is switched on, the selected route is
con/rmed and fur ther speed adjustment is activa-
te d.
Speed adap tation is cancelled in thefo llowing
cases:
R Ifth e turn signal indicator is switched o.
before thero ute event and it is therefore Driving and parking
243 243
ch
ange from active topassive mode or vice versa
at any time. If
th e system de tects that the driver has not
steered theve hicle for a considerable period of
time or has remo vedth eir hands from the steering
wheel, an optical warning is given /rst. Display 1
appears in the driver's displa y.Ifth e driver still
does not steer theve hicle, or gives no con/rma-
tion tothe system, a warning tone sounds in addi-
tion tothe visual warning message.
If th e driver does not react tothis wa rning for a
considerable period, an emer gency stop is initi-
ated (/ page 247). The
warning is not issued or is stopped as soon as
th e system de tects that the driver has touched
th e steering wheel.
To uch de tection may be limited or inoperative in
th efo llowing situations:
R The driver is wearing glo ves.
R There is a steering wheel co ver on the steering
wheel.
If Ac tive Steering Assist de tects that a system
limit has been reached, a visual warning is issued
and a warning tone sounds.
Obser vethe no tes on driving systems and your
re sponsibility; you may otherwise failto recognise
dangers (/ page 228).
Syst
Syst em limits
em limits
Ac tive Steering Assist has a limited steering tor-
qu efo r lateral guidance. In some cases, the steer-
ing inter vention is not su1cient tokeep theve hi-
cle in the lane. The system may be impaired or may not function
in
thefo llowing instances:
R There is poor visibility, e.g. due tosno w,rain,
fo g, heavy spr ay,gr eatly varying light condi-
tions or strong shadow s onthe car riag ewa y.
R There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections.
R Insu1cient road illumination.
R The windscreen is dirty, mis ted up, damaged
or co vered in the vicinity of the camera, e.g.
by a stic ker.
R No, or se veral, unclear lane markings are pres-
ent for one lane, or the markings change
qu ickl y,forex ample, in a construction area or
junctions.
R The lane markings are wornawa y,dark or co v-
ered up, e.g. bydirt or sno w.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R The road is na rrow and winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers. 246 246
Driving and parking
mation
tothe system, a warning tone sounds in
addition tothe visual warning message.
Also obser vethe inst ructions on the contact
de tection of Active Steering Assist (/ page 245).
Ac tive Emer gency Stop Assist issues thefo llowing
wa rnings in order:
R Display message 1appears in the driver's
displa y.
R In addition todisplay 1awa rning tone
sounds.
R The Beginning emergency stop message
appears in the driver's displa y,a continuous
wa rning tone sounds, theve hicle no lon ger
accelerates, and there is a slight, repeated
te nsioning of the seat belt.
R The vehicle speed is reduced in increments
until it is at a standstill. Sharp brake impulses
are also produced.
Depending on the countr y,a lane change tothe
adjacent right-hand lane is carr ied out, if possible.
% It is only possible tochange across one lane
and only into theright-hand lane, and not
onto the hard shoulder. When automatic braking is initiated,
Active Dis-
ta nce Assist DISTRONIC is deactivated. Depend-
ing on the countr y,the hazard warning light sys-
te m is switched on.
When theve hicle is stationar y,thefo llowing
actions are car ried out:
R The vehicle is secured with the electric par k-
ing brake.
R The vehicle is unloc ked.
R If possible, an emer gency call is placed tothe
Mercedes-Benz emerg ency call centre.
Before automatic braking is initiated, you can can-
cel Active Emer gency Stop Assist bystee ring.
Yo u can cancel the inter vention byActive Emer-
ge ncy Stop Assist aTer automatic braking is initi-
ated byone of thefo llowing actions:
R Accelerating or braking: the emer gency stop is
cancelled, but thewa rning message ,wa rning
to ne and po wer steering remain active
R Steering: po wer-assis ted steering is cancelled,
th ewa rning message andwarning tone remain
active and theve hicle continues tobe braked %
Active Emer gency Stop Assist can initiate an
emer gency stop a maximum of thre e times
within one driving cycle. Subsequentl y,Ac tive
St eering Assist and Active Emer gency Stop
Assist are deactivated forth at driving cycle.
Syst Syst em limits
em limits
If Ac tive Lane Keeping Assist does not de tect lane
markings, Active Emer gency Stop Assist is not
active.
Fo rth e de tection of vehicles and other obs tacles,
obser vethe system limits of thefo llowing func-
tions:
R Active Distance Assist DISTRONIC
(/ page 237)
R Active Steering Assist (/ page 245)
R Active Lane Change Assist (/ page 248) A A
ctiv
ctiv e Lane Chang
e Lane Chang e Assist
e Assist F
F
unction of A
unction of A ctiv
ctive Lane Chang
e Lane Chang e Assist
e Assist
Ac tive Lane Change Assist supports the driver
when changing lanes and is activated byindicat-
ing brie0y. 248
248
Driving and parking
appears along with
grey arro ws inthe driver dis-
pla y.
If no vehicle or obs tacle is de tected in the adja-
cent lane and a lane change is permitted, the lane
ch ange begins aTer the driver has indicated
brie0y. The lane change is shown tothe driver
with a 0ashing green ar row next tothe±
steering wheel symbol. Green ar row 1 is dis-
pla yed in the appropriate adjacent lane in the
Assistance menu inthe driver displa y.The Lane
change to the left message,fo rex ample, also
appears.
Ac tive Lane Change Assist can be cancelled in
va rious situations, including thefo llowing:
R Change in the sur rounding conditions (e.g.
de tected obs tacle).
R The driver remo vesth eir hands from the steer-
ing wheel.
R The driver steers with too much forc e or in the
opposite direction.
R The driver mo vesth e turn signal indicator in
th e opposite direction. R
Active Distance Assist DISTRONIC or Active
St eering Assist is deactivated.
R The vehicle cann otmake the lane change as
planned.
Cancellation of Active Lane Change Assist is dis-
pla yed as follo ws:
R The ar row in the selected direction of tr avel
turns red.
R A cor responding message appears on the
driver displa y.
R In cer tain circumstances a warning tone
sounds. &
W WARNI NG
ARNI NGRisk of accident when changing
lane toan occupied adjacent lane
Lane Change Assist cann otalw ays clear ly
de tect if the adjacent lane is free.
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 toother road users. #
Monitor the lane change. &
W
WARNING
ARNING Risk of accident if Lane Change
Assist unexpectedly stops functioning
If th e system limitations for Lane Change
Assist ha vebeen reached, there is no guaran-
te eth at the system will remain active.
Lane Change Assist cannot then assist youby
applying steering torque. #
Alwa ys monitor the lane change and
ke ep your hands on the steering wheel.
Obser vethe tra1c conditions and steer
and/or brake if necessar y. Syst
Syst
em limits
em limits
The system may be impaired or may not function
in thefo llowing instances:
R There is poor visibility, e.g. due tosno w,rain,
fo g, heavy spr ay,gr eatly varying light condi-
tions or strong shadow s onthe car riag ewa y.
R There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections. 250 250
Driving and parking
R
Due toinsu1cient illumination of thero ad, or
if th eex terior lighting indicates a malfunction.
R The windscreen is dirty, misted up, damaged
or co vered in the vicinity of the camera, e.g.
by a stic ker.
R The sensors are damaged, co vered or dirty.
R No, or se veral, unclear lane markings are pres-
ent for one lane, or the markings change
qu ickl y,forex ample, in a construction area or
junctions.
R The system does not de tect a suitable road,
fo rex ample, in tight bends or shortly aTer a
slip road.
R The lane markings are wornawa y,dark or co v-
ered up, e.g. bydirt or sno w.
R Ifth e distance totheve hicle in front is too
short and thus the lane markings cannot be
de tected.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
R When the tyre pressure is too lo w. Also obser
vethe system limits of Active Steering
Assist and the information on vehicle senso rsand
cameras in theve hicle Owner's Manual.
% The Active Lane Change Assist sensors adjust
automatically while a cer tain distance is being
driven aTer theve hicle has been deli vered.
Ac tive Lane Change Assist is una vailable or
only partially available during this teach-in
process, and no ar rows are displ ayed next to
th eØ Active Steering Assist symbol.
Selecting A Selecting A ctiv
ctive Lane Chang
e Lane Chang e Assist
e Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Driving #
Select the function. A
A
ctiv
ctiv e Br
e Br ak
ake Assist
e Assist F
F
unction of A
unction of A ctiv
ctive Br
e Br ak
ake Assist
e Assist
Ac tive Brake Assist consists of thefo llowing func-
tions:
R Distance warning function
R Collision warning R
Autonomous braking function
R Situation-dependent braking assistance
R Evasive Steering Assist (countr y-speci/c)
Ac tive Brake Assist can help youto minimise the
ri sk of a collision with vehicles, cyclists or pedes-
trians or toreduce the e.ects of such a collision.
If Ac tive Brake Assist has de tected a risk of colli-
sion, a warning tone sounds and theL dis-
ta nce warning lamp lights up. In
theAssistance menu, an insu1cient distance
1 totheve hicle in front is displ ayed in red. If you
fur ther reduce the distance, theve hicle in front is
also highlighted in red. When the system de tects a Driving and parking
251
251
ri
sk of collision, redra dar waves2 appear in
front of theve hicle.
% V
Vehicles wit
ehicles wit h PRE-S
h PRE-SAFE
AFE®
®
:
:depending on the
count ry, an additional haptic warning occurs
in thefo rm of slight, repeated tensioning of
th e seat belt.
% V
Vehicles wit
ehicles wit h activ
h active ambient lighting:
e ambient lighting: ifWarn-
ing assistance is activated,theAc tive Brake
Assist warning is also accompanied byambi-
ent lighting (/ page 173).
If yo u do not react tothewa rning, autonomous
braking can be initiated in critical situations.
In particular lycritical situations, Active Brake
Assist can also initiate autonomous braking
directl y.In this case, thewa rning lamp and warn-
ing tone occur simultaneously with the braking
application.
If yo u apply the brake yourself in a critical situa-
tion or apply the brake during autonomous brak-
ing, situation-dependent braking assistance
occurs. The brake pressure increases up tomaxi-
mum full-s top braking if necessar y. If autonomous braking or situation-dependent
braking assis
tance has occur red, pop up 1
appears in the driver's display and then automati-
cally goes out aTer a short time.
If th e autonomous braking function or the situa-
tion-dependent braking assistance is triggered,
additional pr eventive measures for occupant pro-
te ction (PRE- SAFE®
) may also be initiated. &
W WARNING
ARNING Risk of an accident caused by
limited de tection per form ance of Active
Brake Assist
Ac tive Brake Assist cannot alw ays clear lyiden-
tify objects and complex tra1c situations. In such cases,
Active Brake Assist might:
R Give a warning or brake without reason
R Not give a warning or not brake
Ac tive Brake Assist is only an aid. The driver is
re sponsible for maintaining a su1ciently safe
distance totheve hicle in front, vehicle speed
and for braking in good time. #
Always pay careful attention tothe tra1c
situation; do not relyonActive Brake
Assist alone. #
Be prepa redto brake or swer veif neces-
sar y. The individual subfunctions are
available in thefo l-
lowing speed ranges:
Dist
Dist ance w
ance w ar
arning function
ning function
Yo u are warned bythe distance warning function
from appr oximately 30 km/h if, over se veral sec-
onds, the distance maintained totheve hicle tr av-
elling in front is insu1cient forth e driven speed.
In this case, theL warning lamp in the driver's
display lights up. If the distance totheve hicle in 252
252
Driving and parking