2022 MERCEDES-BENZ S-CLASS SALOON LONG Owners Manual

=
A ctive Distance Assist DISTRONIC or Active
Steering Assist is deactivated.
= The vehicle cannot make the lane change as
planned.
Cancellation of Active Lane Change Assist is dis-
played as follows: = The arrow in the selected direction of travel
turns red.
= A corresponding message appears on the
driver display.
= In certain circumstances a warning tone
sounds. &
WARNING Risk of accident when c
hanging
lane to an occupied adjacent lane
Lane Change Assist cannot always clearly
de
tect if the adjacent lane is free.
The lane change might be initiated although
the adjacent lane is not free. 
Before changing lanes, make sure that
t

he neighbouring lane is free and there is
no danger to other road users. 
Monitor the lane change. &
WARNING Risk of accident if Lane Chang
e
Assist unexpectedly stops functioning
If the system limitations for Lane Change
Assis
t have been reached, there is no guaran-
tee that the system will remain active.
Lane Change Assist cannot then assist you by
applying steering torque. 
Always monitor the lane change and
k

eep your hands on the steering wheel.
Observe the traPc conditions and steer
and/or brake if necessary. System limits
The sy

stem may be impaired or may not function
in the following instances:
= There is poor visibility, e.g. due to snow, rain,
fog, heavy spray, greatly varying light condi-
tions or strong shadows on the carriageway.
= There is glare, e.g. from oncoming traPc,
direct sunlight or reOections. =
Due t
o insuPcient illumination of the road, or
if the exterior lighting indicates a malfunction.
= The windscreen is dirty, misted up, damaged
or covered in the vicinity of the camera, e.g.
by a sticker.
= The sensors are damaged, covered or dirty.
= No, or several, unclear lane markings are pres-
ent for one lane, or the markings change
quickly, for example, in a construction area or
junctions.
= The system does not detect a suitable road,
for example, in tight bends or shortly aser a
slip road.
= The lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow.
= If the distance to the vehicle in front is too
short and thus the lane markings cannot be
detected.
= There are obstacles on the lane or projecting
out into the lane, such as object markers.
= When the tyre pressure is too low. 286
Driving and parking

Also observe the system limits of Active Steering
Assis t and the information on vehicle sensors and
cameras in the vehicle Owner's Manual.
% The Active Lane Change Assist sensors adjust
aut

omatically while a certain distance is being
driven aser the vehicle has been delivered.
Active Lane Change Assist is unavailable or
only partially available during this teach-in
process, and no arrows are displayed next to
the Ø Active Steering Assist symbol.
Selecting Active Lane Change Assist
Multimedia sy
stem:
4 © 5
Settings 5
Assistance
5 Driving 
Select Active Lane Change Assist. Active Brake Assist
Function of Active Brake Assist
A

ctive Brake Assist consists of the following func-
tions:
= Distance warning function
= Collision warning =
A
utonomous braking function
= Situation-dependent braking assistance
= Evasive Steering Assist (country-speciNc)
Active Brake Assist can help you to minimise the
risk of a collision with vehicles, cyclists or pedes-
trians or to reduce the eMects of such a collision.
If Active Brake Assist has detected a risk of colli-
sion, a warning tone sounds and the / dis-
tance warning lamp lights up. In the Assistance
menu, an insuPcient dis
tance
1 to the vehicle in front is displayed in red. If you
further reduce the distance, the vehicle in front is
also highlighted in red. When the system detects a risk of collision, red radar waves
2 appear in
fr
ont of the vehicle.
% Vehicles with PRE-SAFE n
: depending on t
he
country, an additional haptic warning occurs
in the form of slight, repeated tensioning of
the seat belt.
% Vehicles with active ambient lighting: if Warn-
ing assistance is activ
ated, the Active Brake
Assist warning is also accompanied by ambi-
ent lighting (  page 180).
If you do not react to the warning, autonomous
br
aking can be initiated in critical situations.
In particularly critical situations, Active Brake
Assist can also initiate autonomous braking
directly. In this case, the warning lamp and warn-
ing tone occur simultaneously with the braking
application.
If you 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 to maxi-
mum full-stop braking if necessary. Driving and parking
287

If autonomous braking or situation-dependent
br
aking assistance has occurred, pop up 1
appears in the driver's display and then automati-
cally goes out aser a short time.
If the autonomous braking function or the situa-
tion-dependent braking assistance is triggered,
additional preventive measures for occupant pro-
tection (PRE-SAFE n
) may also be initiated. &
WARNING Risk of an accident caused b
y
limited detection performance of Active
Brake Assist
Active Brake Assist cannot always clearly iden-
tify objects and com
plex traPc situations. In such cases, Active Brake Assist might:
= Giv

e a warning or brake without reason
= Not give a warning or not brake
Active Brake Assist is only an aid. The driver is
responsible for maintaining a suPciently safe
distance to the vehicle in front, vehicle speed
and for braking in good time. 
Always pay careful attention to the tr
aPc
situation; do not rely on Active Brake
Assist alone. 
Be prepared to brake or swerve if neces-
sar

y. If Active Brake Assist is deactivated or the func-
tions ar
e restricted, e.g. due to activation of
another driving system, the ê display message
appears in the driver's display.
If the system is unavailable due to dirty or dam-
aged sensors or due to a fault, or if the functions
are restricted, the

=
A t speeds up to approximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
= At speeds up to approximately 100 km/h
when approaching stationary vehicles.
= At speeds up to approximately 80 km/h when
approaching cyclists ahead.
= At speeds up to approximately 70 km/h when
approaching stationary pedestrians and
cyclists.
Autonomous braking function
The autonomous braking function can intervene
from speeds of approximately 7 km/h: = At speeds up to approximately 250 km/h
when approaching vehicles ahead.
= At speeds up to approximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
= At speeds up to approximately 100 km/h
when approaching stationary vehicles.
= At speeds up to approximately 80 km/h when
approaching cyclists ahead. =
A t speeds up to approximately 70 km/h when
approaching stationary pedestrians and
cyclists.
Situation-dependent braking assistance
Situation-dependent braking assistance can inter-
vene from speeds of approximately 7 km/h: = At speeds up to approximately 250 km/h
when approaching vehicles ahead.
= At speeds up to approximately 120 km/h
when approaching crossing vehicles, pedes-
trians and cyclists.
= At speeds up to approximately 100 km/h
when approaching stationary vehicles.
= At speeds up to approximately 80 km/h when
approaching cyclists ahead.
= At speeds up to approximately 70 km/h when
approaching stationary pedestrians and
cyclists. Cancelling a brake application of Active Brake
Assis
t
You can cancel a brake application of Active
Brake Assist at any time by: = Fully depressing the accelerator pedal or with
kickdown.
= Releasing the brake pedal.
Active Brake Assist may cancel the brake applica-
tion when one of the following conditions is fulNl-
led
= You manoeuvre to avoid the obstacle.
= There is no longer a risk of collision.
= An obstacle is no longer detected in front of
your vehicle.
Reaction to oncoming road users
Active Brake Assist can also react to detected
oncoming road users:
= Reaction up to speeds of approximately
100 km/h
= Warning for oncoming road users through
acoustic warning and warning lamp Driving and parking
289

=
A utonomous braking application in order to
reduce the severity of an accident
Evasive Steering Assist &
WARNING Risk of accident despit
e Eva-
sive Steering Assist
Evasive Steering Assist cannot always recog-
nise objects or com
plex traPc situations
clearly.
Moreover, the steering support provided by
Evasive Steering Assist is not suPcient to
avoid a collision. 
Always pay careful attention to the tr
aPc
situation; do not rely on Evasive Steering
Assist alone. 
Be prepared to brake or swerve if neces-
sar

y. 
End the support by actively steering in
non-cr
itical situations. 
Drive at an appropriate speed if there
ar

e pedestrians close to the path of your
vehicle. Evasive Steering Assist has the following charac-
t

eristics:
= Detection of pedestrians, cyclists and vehi-
cles.
= Assistance through power-assisted steering if
it detects a swerving manoeuvre.
= Activation by an abrupt steering movement
during a swerving manoeuvre.
= Assistance during swerving and straightening
of the vehicle.
= Reaction from a speed of approximately
20 km/h up to a speed of approximately
110 km/h.
The steering support of Evasive Steering Assist
can be cancelled at any time by counter steering.
System limits
Full system performance is not yet available for a
short time aser switching on the vehicle or aser
driving oM. As long as the functions are restricted,
the

=
If t he driver's seat belt is not fastened.
= On bends with a tight radius.
Setting Active Brake Assist
Requirements:
= The vehicle is switched on.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Collision avoidance 
Activate or deactivate the function.
% It is recommended that you always leave
A

ctive Brake Assist activated.
When Active Brake Assist is deactivated, the dis-
t
ance warning function, the autonomous braking
function and Evasive Steering Assist are deactiva-
ted.
% If Active Brake Assist is deactivated, the æ
symbol appear
s in the status bar of the driv-
er's display, and the system is reactivated the
next time the vehicle is started.
Setting the time of the brake application warnings 
Select = ne
xt to Active Brake Assist . 
Select Early , Medium or Late. TraPc
Sign Assis
t Function of
T
raPc Sign Assist
% This function is an on-demand feature
(  pag

e 26).
TraPc Sign Assis
t detects traPc signs with the
multifunction camera and compares this with
information in the digital navigation map. It assists
you by displaying detected speed limits and over-
taking restrictions in the driver's display and in
the head-up display. The system can issue a warn-
ing when you exceed the maximum permissible
speed.
In some countries, the system can provide you
with further functions and can warn you when you
are approaching pedestrian crossings or when
you are about to drive past stop signs or red lights
unintentionally.
The camera also detects and analyses traPc
signs with a restriction indicated by an additional
sign (e.g. when wet). TraPc
Sign Assis
t portrays only selected signs in
the driver's display. Actual traPc signs and speed
limits have priority over traPc signs and speed
limits shown in the driver's display.
Also observe the following information:
= select a speed adapted to the traPc, sur-
roundings and weather conditions
= observe actual traPc signs
= observe applicable traPc rules and regula-
tions
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers ( page 263). Driving and parking
291

Displays in the driver's display
1
Permissible speed
2 Permissible speed when there is a restriction
3 Additional sign with restriction
The system can show up to two tr aPc signs in the
driver's display simultaneously. The system always
prioritises displaying speed limits. Up to one traf-
fic sign with a maximum permissible speed can be
shown in the head-up display. If two speed signs
are shown in the driver's display, forexample when
speed limits are detected, the value of les-hand
speed limit 1 is transmitted to the limiter or
Active Distance Assist DISTRONIC for adoption
and is shown in the head-up display. Examples of
tr
aPc signs which can be displayed
TraPc Sign Assist can detect and display following
traPc signs 1:
= speed limits
= end of the speed limit
= overtaking restrictions
= play streets
= depending on the country: signs showing the
start or end of motorways and dual carriage-
ways TraPc
Sign Assis
t can detect following additional
signs 3 and, if necessary, analyse the relevance
of the restrictions using other vehicle sensors:
= when wet
= slippery road surfaces
= in fog
= temporary restrictions
= exits
= restrictions for car/trailer combinations
TraPc Sign Assist also uses data from the digital
street map in the navigation system. When you
leave or enter a municipality or change roads, on
a motorway exit or slip road forexample, or aser
you turn at a junction, the display in the driver's
display can thus be updated without a traPc sign
having been detected.
If TraPc Sign Assist cannot determine the cur-
rently applicable maximum permissible speed
(e.g. due to missing signs), the following display
appears in the driver's display: 292
Driving and parking

TraPc
Sign Assis t is not available in all countries.
If the vehicle is in a country where TraPc Sign
Assist is not supported, this is displayed continu-
ously.
% Also observe the information on display mes-
sag
es in TraPc Sign Assist (  page 503).
Warning when the maximum permissible speed is
e
xceeded
The system can warn you if you unintentionally
exceed the maximum permissible speed. To do
this, you can specify in the multimedia system by
how much the maximum permissible speed can
be exceeded before a warning is issued. You can
set the warning to visual only (the traPc sign
Oashes three times in the driver's display) or vis-
ual and acoustic, including a warning tone.
Additional functions of TraPc Sign Assist (coun-
try-speciNc)
Warning for no-entry signs: TraPc Sign Assist can
warn you if you drive the wrong way down a sec- tion of road, forexample on motorway slip roads
or one-w
ay streets.
Warning at pedestrian crossings: if you approach
pedestrian crossings, provided that pedestrians
are in the danger zone or are moving towards it,
TraPc Sign Assist can warn you up to a speed of
approximately 70 km/h.
Warning at stop signs: TraPc Sign Assist can warn
you up to a speed of approximately 70 km/h if
you are about to drive past a stop sign uninten-
tionally. For this to be possible, the signs must be
clear, forexample if the system detects more than
one stop sign, or a stop sign can be conNrmed
using the digital navigation map. No warning can
be issued if several diMerent signs are detected.
Warning at red lights: TraPc Sign Assist can warn
you up to a speed of approximately 70 km/h if
you are about to drive through a red light uninten-
tionally.
The following conditions must be fulNlled
= Several traPc lights have been detected.
= All traPc lights detected are red. =
A t least one of the red traPc lights detected is
on the front passenger side beside the vehi-
cle's own lane.
= The traPc lights are in the following sequence
(from top to bottom): red, yellow, green.
% If the function is available, you can activate or
deactiv
ate the warnings at pedestrian cross-
ings, stop signs and red lights in the TraPc
Sign Assist menu under Further warnings
(  page 294).
System limits
The sy
stem may be impaired or may not function
particularly in the following situations:
= If visibility is poor, e.g. due to insuPcient illu-
mination of the road, highly variable shade
conditions, rain, snow, fog, swirling dust or
heavy spray.
= If there is glare, e.g. from oncoming traPc,
direct sunlight or reOections.
= If there is dirt on the windscreen in the vicinity
of the multifunction camera or if the camera is
misted up, damaged or obscured. Driving and parking
293