2020 MERCEDES-BENZ S-CLASS SALOON LONG lane assist

ically
follow theve hicle in front when driving off
again within 30 seconds. If a critical situation is
de tected in the sur rounding area when driving
off, such as a person in theve hicle path, a visual
and acoustic warning is given indicating that the
driver must now take control of theve hicle. The
ve hicle is not accelerated any fur ther.
Ac tive Dis tance Assi stDISTRONIC is ready to
pull away when the green çvehicle symbol
fl ashes cyclicall y.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219). Driver display in
theAssistance menu 1
Vehicle in front
2 Distance indica tor
3 Set specified di stance
Ve hicle de tected in front 1is highlighted in
green. It may also be in the lane tothe left of
yo ur vehicle in situations where it is not permit‐
te dto ov ertake on theright, forex ample on
mo torw ays.
Pe rm anent status display
R ç (white): Active Dis tance Assi st
DISTRONIC selected, speci fied dis tance set R
ç (gre en): Active Dis tance Assi st
DISTRONIC acti ve, specified dis tance set and
ve hicle de tected
The stored speed is shown under the permanent
st atus display and highlighted on the speedome‐
te r.When Active Dis tance Assi stDISTRONIC is
passi ve,th est atus display is greye d out.
If th e speed of theve hicle in front or the speed
adjustment is less than thestored speed due to
th ero ute event ahead, the segments in the
speedome ter light up.
When the set specified dis tance is increased or
decreased, theÒ display brief lyappears
under theve hicle in the permanent status dis‐
pla y.
% On mo torw ays or high-speed major roads,
th e green çvehicle symbol is displa yed
cyclically when theve hicle is ready topull
aw ay.
% Ifyo u depress the accelerator pedal be yond
th e setting of theAc tive Dis tance Assi st
DISTRONIC, the sy stem is switched topas‐
sive mode. The çsuspended message
appears on the driver displa y.230
Driving and parking

hitch and
the electrical connection has been
cor rectly es tablished
In these situations the driver must inter vene
acco rdingly. &
WARNING Risk of accident in spi teof
ro ute-based speed adap tation
Ro ute-based speed adap tation can malfunc‐
tion or be temp orarily una vailable in thefo l‐
lowing situations:
R Ifth e driver does not follow the calcula‐
te dro ute
R If map data is not up-to-date or available
R Intheeve nt of roadwor ks
R In bad weather or road conditions
R Ifth e accelera tor pedal is depressed
R Intheeve nt of electronical lydispla yed
speed limitations #
Adapt the speed tothe traf fic situation. Setting
Active Di stance Assist DIST RONIC
driving styles
Re quirements:
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Driving 5
Active Distance Assist
Selecting a driving style #
Select DYNAMIC SELECT based ,Dynamic or
Comfort.
Setting speed adaptation #
Select When cornering etc. orFor limits .
When these functions are active, theve hicle
speed is adjus ted according toaro ute event
ahead or tospeed limits de tected byTraf fic
Sign Assi st.
% When one of thefo llowing sy stems is active,
th e de tected speed can be manually adop ted
as the speed limit:
R Active Dis tance Assi stDISTRONIC R
Variable limiter
Fu rther information about Active Dis tance
Assi stDISTRONIC (/ page 232).
% Further information on speed adap tation
(/ page 235).
Fu nction of Active Traf fic Jam Assist
Ac tive Traf fic Jam Assi sthelps you when in traf‐
fi c jams on multi-lane roads with separate car ria‐
ge wa ys by automatically pulling away within
60 seconds and with moderate steering
manoeuvres. It orients itself using theve hicle in
front and lane markings. Active Traf fic Jam
Assi stautomatically main tains a safe dis tance
from theve hicle in front and vehicles cutting in.
Ac tive Traf fic Jam Assi strequ iresyou, as the
driver, tokeep your hands on thesteering wheel
at all times so that you are able tointer vene at
any time tocor rect the course of theve hicle and
ke ep it in lane.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219). 236
Driving and parking

Ac
tive Traf fic Jam Assi stactivates automatically
when all of thefo llowing conditions are me t:
R You are in a traf fic jam on a mo torw ay or
high-speed major road.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d and active (/ page 232).
R Active Steering Assist is activated and active
(/ page 239).
R You are tr avelling no fasterthan 60 km/h.
When Active Traf fic Jam Assi stis active the¬
st atus display appears in the driver displa y.
Sy stem limits
The sy stem limitations of Active Dis tance Assi st
DISTRONIC and Active Steering Assist apply to
Ac tive Traf fic Jam Assi st (/ page 237). Ac
tive Steering Assist Fu
nction of Active Steering Assist
Ac tive Steering Assist is only available up to a
speed of 210 km/h. The sy stem helps youto
st ay inthe cent reofthe lane bymeans of mod‐
erate steering inter ventions. Depending on thespeed driven,
Active Steering Assist uses the
ve hicles ahead and lane markings as a refer‐
ence.
% Depending on the count ry, in the lo wer
speed range Active Steering Assist can use
th e sur rounding traf fic as a refere nce. If nec‐
essar y,Ac tive Steering Assist can then also
pr ov ide assis tance when driving outside the
centre of the lane.
If th e de tection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches topassive mode. The sy stem pr ovides
no support in this case.
Pe rm anent status display in the driver dis‐
play
Ø Grey:acti vated and passive
Ø Green: activated and active
Ø Red,flashing: prompttothe driver to
actively con firm or transition from active
to passive status, sy stem limit de tected
% During the transition from active topassive
st atus, theØ symbol is shown as
enlar ged and flashing. Once the sy stem is passive,
theØ symbol is shown as gr eyin
th e driver displa y.
Contact de tection
The driver is requiredtokeep their hands on the
st eering wheel at all times and be able tointer‐
ve ne at any time tocor rect the course of the
ve hicle and keep it in lane. The driver must
ex pect a change from active topassive mode or
vice versa at any time. If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, an optical warning is given firs t. Dis‐
pl ay messa ge1 appears in the driver displa y.If Driving and parking
237

th
e driver still does not steer theve hicle, or
gives no confirmation tothe sy stem, a warning
to ne sounds in addition tothe visual warning
message.
If th e driver does not react tothis wa rning for a
considerable period, an emergency stop is initi‐
ated (/ page 239).
The warning is not issued or is stopped as soon
as the sy stem de tects that the driver has
to uched thesteering wheel.
To uch de tection may be limited or inoperati vein
th efo llowing situations:
R The driver is wearing glov es.
R There is a steering wheel co ver on thesteer‐
ing wheel.
If Ac tive Steering Assist de tects that a sy stem
limit has been reached, a visual warning is
issued and a warning tone sounds.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219). 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.
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,forex ample, in a con stru ction area
or junctions.
R The lane markings are wornaw ay, dark or
co vered up, e.g. bydirt or sno w. R
Ifth e dis tance totheve hicle in front is too
short and thus the lane markings cann otbe
de tected.
R The road is nar rowand winding.
R There are obs tacles on the lane or projecting
out into the lane, such as object mar kers.
R If transport equipment, forex ample a trailer
or bicycle rack , is attached tothe trailer
hitch and the electrical connection has been
cor rectly es tablished.
The sy stem does not pr ovide assis tance in the
fo llowing conditions:
R Onvery tight bends and when turning.
R When crossing junctions.
R Atroundabouts or tollst ations.
R When actively changing lane without swit ch‐
ing on the turn signal indicator.
R When the tyre pressure is too lo w. 238
Driving and parking

&
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
The de tection of lane markings and objects
may malfunction and cause unexpected
st eering inter ventions. #
Steer according totraf fic conditions. Ac
tivating/deactivating Active Steering
Assist
Re quirements:
R ESP ®
is activated, but is not inter vening.
R Active Dis tance Assi stDISTRONIC is acti va‐
te d.
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Driving #
Select ØAct. Steering Asst . Fu
nction of Active Eme rgency Stop Assist Ac
tive Emergency Stop Assist uses touch sen‐
sors tomonitor whe ther the driver holds the
st eering wheel and initiates an emer gency stop if
necessar y.
If Ac tive Steering Assist is deactivated, the
accelerator and brake pedal are monitored as
we ll as thesteering wheel. A warning is issued
when thesteering wheel is not being held or
when a pedal is not depressed, and theve hicle
is in danger of leaving the lane. If
th e sy stem de tects that the driver has not
st eered theve hicle for a considerable period of
time or has remo vedth eir hands from thesteer‐
ing wheel, visual warning 1is issued. If the
driver still does not steer theve hicle, or gives no
confirmation tothe sy stem, a warning tone
sounds in addition tothe visual warning mes‐
sage.
Also obser vethe instructions on the conta ct
de tection of Active Steering Assist
(/ page 237). Driving and parking
239

Ac
tive Emergency Stop Assist issues thefo llow‐
ing warnings in order:
R Display message 1appears in the driver
displa y.
R In addition todisplay 1awa rning tone
sounds.
R The Beginning emergency stop message
appears in the driver displa y,a continuous
wa rning tone sounds, theve hicle no longer
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 impul‐
ses are also produced.
Depending on the count ry, a lane change tothe
adjacent right-hand lane is car ried out, if possi‐
ble.
% It is only possible tochange across one lane
and on ly intotheright-hand lane, and not
onto the hard shoulder.
Depending on the count ry,th e hazard warning
lights are switched on when automatic braking is
initiated. When
theve hicle is stationar y,thefo llowing
actions are car ried out:
R The vehicle is secured with the electric park‐
ing brake.
R Active Dis tance Assi stDISTRONIC is ended
R The vehicle is unloc ked.
R If possible, an emer gency call is placed to
th e Mercedes-Benz emer gency call centre
Before au tomatic braking is initia ted, you can
cancel Active Emergency Stop Assist bysteer‐
ing.
Yo u can cancel the inter vention byActive Emer‐
ge ncy Stop Assist af ter auto matic braking is ini‐
tiated byone of thefo llowing actions:
R Accelerating or braking: the emer gency stop
is cancelled, but thewa rning message, warn‐
ing tone and po werst eering remain active
R Steering: po wer-assis tedsteering is cancel‐
led, thewa rning message and warning tone
re main active and theve hicle continues tobe
braked %
Active Emergency Stop Assist can initiate an
emer gency stop a maximum of thre e times
within one ignition cycle. Af terth is Ac tive
St eering Assist and Active Emergency Stop
Assist are deactivated forth at ignition cycle.
Sy stem limits
If Ac tive Lane Keeping Assist does not de tect
lane markings, Active Emergency Stop Assist is
not active.
Fo rth e de tection of vehicles and other obs ta‐
cles, obser vethe sy stem limits of thefo llowing
functions:
R Active Dis tance Assi stDISTRONIC
(/ page 229)
R Active Steering Assist (/ page 237)
R Active Lane Change Assi st (/ page 240) Ac
tive Lane Change Assi st Fu
nction of Active Lane Change Assi st
Ac tive Lane Change Assi stsupports the driver
when changing lanes and is activated byindicat‐
ing briefly. 240
Driving and pa rking

Fo
rth is, thefo llowing conditions must be fulfil‐
led:
R You are on a mo torw ay or high-speed major
ro ad.
R The vehicle speed is between appr oximately
80 km/h and 180 km/h.
R The neighbou ring lane is separated bya bro‐
ke n lane ma rking.
R Novehicle or obs tacle is de tected in the
adjacent lane.
R Since the last time theve hicle wasst ar ted,
th e sensors ha vedetected a vehicle at a suit‐
able dis tance behind your vehicle.
R Active Lane Change Assi stis selec ted in the
multimedia sy stem.
R Active Dis tance Assi stDISTRONIC and Active
St eering Assist are activated on mo torw ays.
The sy stem is not available and must be reacti‐
va ted in thefo llowing situations:
R Active Dis tance Assi stDISTRONIC and Active
St eering Assist werealready activated before
entering the mo torw ay. R
The sy stem briefly does not de tect thero ad
yo u are on as a mo torw ay or a mo torw ay-like
ro ad, e.g. on a mo torw ay junction.
As soon as Active Lane Change Assi stdetects a
suitable road, you can reactivate it with J,
M orN. Driver display in
theAssistance menu 1
Green ar row: lane change initiated
2 Red ar row: lane change cancelled
When Active Lane Change Assi stisavailable, the
± display appears along with green ar rows in
th e driver displa y.Ifth e sy stem has been activa‐
te d but is not cur rently available, the± dis‐ Driving and parking
241

play appears along with gr
eyarrow s in the driver
displa y.
If no vehicle or obs tacle is de tected in the adja‐
cent lane and a lane change is permit ted, the
lane change begins af terth e driver has indicated
brief ly. The lane change is shown tothe driver
with a flashing greenarro w next tothe±
st eering 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,forex ample, also
appears.
Ac tive Lange Change Assi stcan 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
st eering wheel.
R The driver steers with too much forc e or in
th e opposite direction.
R The driver mo vesth e turn signal indicator in
th e opposite direction. R
Active Dis tance Assi stDISTRONIC or Active
St eering Assist is deactivated.
R The vehicle cannot make the lane change as
planned.
Cancellation of Active Lane Change Assi stis 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 onthe
driver displa y.
R In cer tain circums tances a warning tone
sounds. &
WARNING Risk of accident when chang‐
ing lane toan occupied adjacent lane
Lane Chan geAssi stcannot al ways 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 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 torque. #
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 237).
The sy stem may also be impaired or may not
function in thefo llowing situations:
R The sensors are damaged, co vered or dirty
(/ page 220). 242
Driving and pa rking