2021 MERCEDES-BENZ S-CLASS SALOON LONG parking brake

Syst
Syst
em limits
em limits
The system limits of Tra1c Sign Assist apply to
th e de tection of tra1c signs (/ page 294).
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 283).
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 282 282
Driving and parking

assumed
that thero ute event is not releva nt
to the driver.
R Ifth e driver depresses the accelerator or
brake pedal during the process.
Sy
Sy st
stem limits
em limits
Ro ute-based speed adap tation does not take right
of wa yre gulations into account. The driver is
re sponsible for complying with road tra1c regula-
tions and driving at a suitable speed.
In di1cult conditions, the speed selection made
by the system may not alw ays be suitable. This
applies tothefo llowing situations, forex ample:
R unclear roads
R road nar rowing
R varying maximum permissible speeds in indi-
vidual lanes, forex ample at toll stations
R wetro ad sur faces, snow or ice
R if transport equipment, forex ample a trailer or
bicycle rack , is attached tothe trailer hitch
and the electrical connection has been cor-
re ctly es tablished In
these situations the driver must inter vene
accordingl y. &
W WARNI NG
ARNI NGRisk 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 calculated
ro ute
R If map data is not up-to-date or available
R Intheev ent of roadwor ks
R In bad weather or road conditions
R Ifth e accelerator pedal is depressed
R Intheev ent of electronically displa yed
speed limi tations #
Adapt the speed tothe tra1c situation. Se
Se
tting A
tting A ctiv
ctive Dist
e Dist ance Assis
ance Assist DIS t DISTR
TRONIC dr
ONIC dr iving
iving
s
sty ty les
les
R
R eq
eq uir
uir ements:
ements:
R Active Distance Assist DISTRONIC is activa-
te d.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Driving 5
Active Distance Assist
Selecting a dr
Selecting a dr iving s
iving stytyle
le #
Select DYNAMIC SELECT based ,Dynamic or
Comfort.
Se
Se tting speed adapt
tting speed adapt ation
ation #
Select For curves etc..
When these functions are active, theve hicle
speed is adjusted depending on thero ute
ev ents ahead.
% When one of thefo llowing systems is active,
th e de tected speed can be manually adopted
as the speed limit:
R Active Distance Assist DISTRONIC
R Variable limi ter Driving and parking
283
283

R
Ifth e distance totheve hicle in front is too
short and thus the lane markings 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.
R If transpo rtequipment, forex ample a trailer or
bicycle rack , is attached tothe trailer hitch
and the electrical connection has been cor-
re ctly es tablished.
The system does not pr ovide assistance in thefo l-
lowing conditions:
R Onvery tight bends and when turning.
R When crossing junctions.
R Atroundabouts or toll stations.
R When actively changing lane without switching
on the turn signal indicator.
R When the tyre pressure is too lo w. &
W
WARNI NG
ARNI NGRisk of accident if Active Steer-
ing Assist unexpectedly stops functioning
If th e system limits of Active Steering Assist
are reached there is no guarantee that the
system will remain active or will keep theve hi-
cle in lane. #
Alwayske ep your hands on the steering
wheel and obser vethe tra1c carefull y. #
Always steer theve hicle paying attention
to tra1c conditions. &
W
WARNI NG
ARNI NGRisk of accident if Active Steer-
ing Assist unexpectedly inter venes
The de tection of lane markings and objects
may malfunction and cause unexpected steer-
ing inter ventions. #
Steer according totra1c conditions. A A
ctiv
ctiv ating/deactiv
ating/deactiv ating A
ating Activ
ctiveSt
e St eer
eer ing Assist
ing Assist
R
R eq
eq uir
uir ements:
ements:
R ESP ®
is activated, but is not inter vening. R
Active Distance Assist DISTRONIC is activa-
te d.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Driving #
Select ØAct. Steering Asst . F
F
unction of A
unction of A ctiv
ctive Emerg
e Emerg encySt
ency Stop Assist
op Assist Ac
tive Emer gency Stop Assist uses touch sensors
to monitor whe ther the driver holds the steering
wheel and initiates an emer gency stop if neces-
sa ry.
If Ac tive Steering Assist is deactivated, the accel-
erator and brake pedal are monitored as well as
th e steering wheel. A warning is issued when the
stee ring wheel is not being held or when a pedal
is not depre ssed, andtheve hicle is in danger of
leaving the lane. 286
286
Driving and parking

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, visual warning 1 is issued. If the driver
still does not steer theve hicle, or gives no con/r-
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 284).
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. Driving and parking
287
287

When
Active Lane Change Assist is available, the
± display appears along with green ar rows in
th e driver displa y.Ifth e system has been activa-
te d but is not cur rently available, the± display
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. Driving and parking
289 289

R
There is glare, e.g. from oncoming tra1c,
di re ct sunlight or re0ections.
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 290
290
Driving and parking

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 179).
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 Driving and parking
291
291

front continues
todecrease at higher speeds, the
L warning lamp begins to0ash.
Collision w
Collision w ar
arning
ning
Collision warning can assist you in thefo llowing
situations from appr oximately 7 km/h with an
intermittent warning tone and theL warning
lamp.
V V ehicles wit
ehicles wit h PRE-S
h PRE-SAFE
AFE®
®
:
:depending on the coun-
tr y, an additional haptic warning occurs in the
fo rm of slight, repeated tensioning of the seat
belt.
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching 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. A A
ut
ut onomous br
onomous br aking function
aking function
The autonomous braking function can inter vene
from speeds of appro ximately 7 km/h:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead.
R Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching 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 br Situation-dependent br aking assist
aking assistance
ance
Situation-dependent braking assistance can inter-
ve ne from speeds of app roximately 7 km/h:
R Atspeeds up toappr oximately 250 km/h
when approaching vehicles ahead. R
Atspeeds up toappr oximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
R Atspeeds up toappr oximately 100 km/h
when approaching 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 br Cancelling a br ak
ake application of A
e application of A ctiv
ctive Br
e Br ake
ake
Assist
Assist
Yo u can cancel a brake application of Active
Brake Assist at any time by:
R Fully depressing the accelerator pedal or with
kickdown.
R Releasing the brake pedal.
Ac tive Brake Assist may cancel the brake applica-
tion when one of thefo llowing conditions is ful/l-
led:
R you manoeuvre toavo idthe obstacle
R there is no longer a risk of collision 292 292
Driving and parking