2020 MERCEDES-BENZ S-CLASS SALOON LONG warning light

Microsleep de
tection also does not function
when the driver camera cann otdetect theey es
of the driver, as a result of thefo llowing factors,
fo rex ample:
R The driver's eyes are co vered due tothe
st eering column position, forex ample.
R Poor lighting conditions.
R Some types of spectacles or sunglasses.
R The driver's line of vision is outside the driver
camera's field of vision.
Also obser veany information rega rding display
messages that can be displa yed in the driver dis‐
pla y.
The tiredness and alertness assessment of
AT TENTION ASSIST with microsleep de tection is
re set and restar ted when continuing the journey
in thefo llowing situations:
R Ifyo u swit choff the engine.
R Ifyo u unfas tenyo ur seat belt and open the
driver's door (e.g. tochange drivers or take a
break). Setting
ATTENTION ASSI ST
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Assistance 5
ATTENTION ASSIST
Setting the sensitivity #
Tapth e cur rent setting. #
Select Standard orSensitive .
Ac tivating/deactivating the mic rosleep
wa rning #
Activate/deactivate Microsleep warning. Limiter
Fu
nction of the limiter
The limiter restricts the speed of theve hicle. To
re duce the speed tothe set speed, the limiter
applies the brakes automaticall y.
Yo u can limit the speed as follo ws:
R Variable: for a short-term speed restriction,
e.g. in built-up areas
R Perm anen t:for a longer-term speed restric‐
tion, e.g. in winter tyre mode The
variable limiter is operated using the cor re‐
sponding steering wheel buttons (/ page 232).
Yo u can store any speed abo ve20 km/h up to
th e maximum design speed or up tothe set win‐
te r tyre limit. You can also per form settings
while theve hicle is stationary if theve hicle has
been star ted.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219).
Messages in the driver display
R È (gre y): variable limiter is selec ted but
not yet acti vated.
R È (flashes gr ey):va riable limiter is temp o‐
rari lypassive.
R È (green): variable limiter is activated.
A stored speed appears under theÈ display
and is indicated in the speedome ter.
When the driving speed is greater than the
st ored speed, theÈ display flashes. 228
Driving and parking

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

Sy
stem limits
The sy stem may be impaired or may not function
in thefo llowing situations, forex ample:
R In sn ow,ra in, fog, heavy spr ay, if there is
gl are, in direct sunlight or in greatlyvarying
light conditions.
R The windsc reen 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.
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 possible
deceleration. If this decele ration is not su ffi‐
cient, Active Dis tance Assi stDISTRONIC
alerts you with a visual and acoustic warning. #
Adjust your speed and main tain a suita‐
ble dis tance from theve hicle in front. #
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 Driving and parking
231

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

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

R
The exterior lighting sho wsa defect.
R The sy stem does not de tect a suitable road,
fo rex ample, in tight bends or shortly af ter a
slip road.
R The vehicle is on a construction site.
% The Active Lane Change Assi stsensors
adjust automatically while a cer tain dis tance
is being driven af terth eve hicle has been
delivered. Active Lane Change Assi stis
una vailable or only partially available during
th is teach-in process, and no ar rows are dis‐
pla yed next totheØ Active Steering
Assist symbol.
Obser vethe no tes on driving sy stems and your
re sponsibility; you may otherwise failto recog‐
nise dangers (/ page 219).
Selecting Active Lane Change Assi st
Multimedia sy stem:
4 © 5
Settings 5
Assistance
5 Driving #
Select the function. Ac
tive Brake Assi st Fu
nction of Active Brake Assi st
Ac tive Brake Assi stconsi sts of thefo llowing
functions:
R Distance warning function
R Autonomous braking function
R Situation-dependent braking assi stance
R Evasive Steering Assist (count ry-specific)
Ac tive Brake Assi stcan help youto minimise the
ri sk of a collision with vehicles, cyclists or
pedestrians or toreduce the ef fects of su ch a
collision.
If Ac tive Brake Assi sthas de tected a risk of colli‐
sion, a warning tone sounds and theL dis‐
ta nce warning lamp lights up. In
theAssistance menu, an insuf ficient di stance
1 totheve hicle in front is displa yed in red. If
yo u fur ther reduce the dis tance, theve hicle in
front is also highlighted in red. When the sy stem
de tects a risk of collision, redra dar waves2
appear in front of theve hicle.
Ve hicles with PRE-SAFE ®
:depending on the
countr y,an additional haptic warning occurs in
th efo rm of slight, repeated tensioning of the
seat belt.
% Vehicles with active ambient lighting: if
Warning assistance is activated,theAc tive
Brake Assi stwa rning is also accompanied by
ambient lighting (/ page162). Driving and pa
rking 243

If
yo u do not react tothewa rning, autonomous
braking can be initiated in critical situations.
In particular lycritical situations, Active Brake
Assi stcan also initia teautonomous braking
direct ly. Inthis case, thewa rning lamp and warn‐
ing tone occur simultaneously wi th 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 assis tance
occu rs. The brake pressure increases up tomax‐
imum full-s top braking if necessar y.If autonomous braking or situation-dependent
braking assis
tance has occu rred, pop up 1appears in
the driver display and then automati‐
cally goes out af ter a short time.
If th e autonomous braking function or the situa‐
tion-dependent braking assis tance is trig gered,
additional pr eventive measu resfo r occupant
pr otection (PRE-SAFE ®
) may also be initiated. &
WARNING Risk of accident due tolimi‐
te d de tection per form ance of Active
Brake Assi st
Ac tive Brake Assi stcannot al ways clear ly
identify objects and complex traf fic situa‐
tions.
Ac tive Brake Assi stis only an aid. The driver
is responsible for maintaining a suf ficiently
safe di stance totheve hicle in front, vehicle
speed and for braking in good time. #
Alw ays pay careful attention tothe traf‐
fi c situation; do not rely on Active Brake
Assi stalone. #
Be prepared tobrake or swer veif nec‐
essar y. %
IfAc tive Brake Assi stis deactivated, æ
appears in the driver displa y.
If th e sy stem is una vailable or the functions
are restricted, Ä appea rs.
Also obser vethe sy stem limits of Active Brake
Assi st.
The individual subfunctions are available in
th efo llowing speed ranges:
The dis tance warning function issues a warning
in thefo llowing situations:
R From appr oximately 30 km/h, if over se veral
seconds the dis tance maintained totheve hi‐
cle tr avelling in front is insuf ficient forthe
driven speed, theL distance warning
lamp lights up in the driver's displa y.
R From appr oximately 7 km/h, if your vehicle
is critically close toave hicle, cyclist or
pedestrian, you will hear an intermit tent
wa rning tone and theL distance warning
lamp lights up in the driver's displa y.
Ve hicles with PRE-SAFE ®
:depending on
th e count ry, an additional haptic warning 244
Driving and pa rking

occurs in
thefo rm of slight, repeated ten‐
sioning of the seat belt.
If possible, brake immediately or manoeuvre to
avo idthe obs tacle.
Di stance warning function
The dis tance warning function can assist youby
means of an intermittent warning tone and a
wa rning lamp:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when app roaching crossing vehicles, pedes‐
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when app roaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h
when approaching cyclists ahead.
R Atspeeds up toappr oximately 70 km/h
when approaching stationary pedestrians
and cyclists. Au
tonomous braking function
The autonomous braking function can inter vene
from speeds of appr oximately 7 km/h:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when app roaching crossing vehicles, pedes‐
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when app roaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h
when approaching cyclists ahead.
R Atspeeds up toappr oximately 70 km/h
when approaching stationary pedestrians
and cyclists.
Situation-dependent braking assistance
Situation-dependent braking assis tance can
inter vene from speeds of appr oximately 7 km/h:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead. R
Atspeeds up toappr oximately 120 km/h
when app roaching crossing vehicles, pedes‐
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when app roaching stationary vehicles.
R Atspeeds up toappr oximately 80 km/h
when approaching cyclists ahead.
R Atspeeds up toappr oximately 70 km/h
when approaching stationary pedestrians
and cyclists.
Cancelling a brake application of Active
Brake Assi st
Yo u can cancel a brake application of Active
Brake Assi stat any time by:
R Fully depressing the accelerator pedal or
with kickdown.
R Releasing the brake pedal.
Ac tive Brake Assi stmay cancel the brake appli‐
cation when one of thefo llowing conditions is
fulfilled:
R You manoeuv retoavo idthe obs tacle.
R The reis no longer a risk of collision. Driving and parking
245