MERCEDES-BENZ S-CLASS SALOON LONG 2022 Owners Manual

Reducing or increasing the
speciNed dis tance
from the vehicle in front 
Press K.
The M displa

y appears. The speciNed dis-
tance is reduced by one level.
If the lowest level is already selected, the
selection jumps to the highest level.
Deactivating Active Distance Assist DISTRONIC or
t
he variable limiter &
WARNING Risk of an accident due t
o
Active Distance Assist DISTRONIC being
active when you leave the driver's seat
If you leave the driver's seat while the vehicle
is being br
aked by Active Distance Assist
DISTRONIC only, the vehicle can roll away. 
Always deactivate Active Distance Assist
DIS

TRONIC and secure the vehicle to
prevent it from rolling away before you
leave the driver's seat. 
Press

&
WARNING Risk of accident due t o Active
Speed Limit Assist adapting the vehicle's
speed
The speed adopted by Active Speed Limit
Assis
t may be too high or incorrect in some
individual cases, such as:
= at speed limits below 20 km/h
= in wet conditions or in fog
= when towing a trailer 
Ensure that the driven speed complies
wit

h traPc regulations. 
Adjust the driving speed to suit current
tr
aPc and weather conditions. Function of route-based speed adaptation
When A

ctive Distance Assist DISTRONIC is activa-
ted, the vehicle speed will be adapted accordingly
to the route events ahead. Depending on the drive
program selected, the vehicle negotiates a route
event ahead in a fuel-saving, comfortable or
dynamic manner. When the route event has been
passed, the vehicle accelerates again to the
stored speed. The set distance to the vehicle in front, vehicles detected ahead and speed restric-
tions ahead ar
e taken into account.
Route-based speed adaptation can be activated in
the multimedia system ( page 280).
The following route events are taken into account:= Bends
= Roundabouts
= T-junctions
= Turns and exits
= TraPc jams ahead (only with Live TraPc )
Also, the speed is reduced if the turn signal indi-
cator is switched on and one of the following sit-
uations is detected:
= Turning at junctions
= Driving on slowing-down lanes
= Driving on lanes adjacent to slowing-down
lanes
The driver is responsible for choosing the right
speed and observing other road users. This
applies in particular to junctions, roundabouts and traPc
lights, as r oute-based speed adaptation
does not brake the vehicle to a standstill.
If a corresponding route event is detected while
route guidance is active, the Nrst speed adjust-
ment is carried out automatically. If the turn signal
indicator is switched on, the selected route is
conNrmed and further speed adjustment is activa-
ted.
Speed adaptation is cancelled in the following
cases:
= If the turn signal indicator is switched oM
before the route event and it is therefore
assumed that the route event is not relevant
to the driver.
= If the driver depresses the accelerator or
brake pedal during the process.
System limits
Route-based speed adaptation does not take right
of way regulations into account. The driver is
responsible for complying with road traPc regula-
tions and driving at a suitable speed. Driving and parking
279

In diPcult
conditions, t he speed selection made
by the system may not always be suitable. This
applies to the following situations, forexample:
= the road's course not clearly visible
= Road narrowing
= varying maximum permissible speeds in indi-
vidual lanes, forexample at toll stations
= wet road surfaces, snow or ice
= If transport equipment, forexample a trailer or
bicycle rack, is attached to the trailer hitch
and the electrical connection has been cor-
rectly established.
In these situations the driver must intervene
accordingly. &
WARNING Risk of accident in spit
e of
route-based speed adaptation
Route-based speed adaptation can malfunc-
tion or be t
emporarily unavailable in the fol-
lowing situations: =
If t
he driver does not follow the calculated
route
= If map data is not up-to-date or available
= In the event of roadworks
= In bad weather or road conditions
= If the accelerator pedal is depressed
= In the event of electronically displayed
speed limitations 
Adapt the speed to the tr
aPc situation. Setting Active Distance Assist DISTRONIC driving
s

tyles
Requirements: = Active Distance Assist DISTRONIC is activa-
ted.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Driving 5
Active Distance Assist
Selecting a driving style 
Select according to the driving programme,
Dynamic or Comfortable .Setting speed adaptation 
Route-based or Speed limit select.
When t
hese functions are active, the vehicle
speed is adjusted depending on the route
events ahead.
% When one of the following systems is active,
t
he detected speed can be manually adopted
as the speed limit:
= Active Distance Assist DISTRONIC
= Variable limiter
Further information about Active Distance
Assist DISTRONIC ( page 276).
% Further information on speed adaptation
(  pag

e 279).
Function of Active Stop-and-Go Assist
A
ctive Stop-and-Go Assist helps you when in traf-
fic jams on multi-lane roads with separate carria-
geways by automatically pulling away within up to
60 seconds and with moderate steering manoeu-
vres. It orients itself using the vehicle in front and
lane markings. Active Stop-and-Go Assist auto-
matically maintains a safe distance from the vehi-
cle in front and vehicles cutting in. 280
Driving and parking

Active Stop-and-Go Assist requires you, as the
dr iver, to keep your hands on the steering wheel
at all times so that you are able to intervene at
any time to correct the course of the vehicle and
keep it in lane.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers ( page 263).
Active Stop-and-Go Assist activates automatically
when all of the following conditions are met:
= You are in a traPc jam on a motorway or high-
speed major road.
= Active Distance Assist DISTRONIC is activated
and active (  page 276).
= Active Steering Assist is activated and active
( page 283).
= You are travelling no faster than 60 km/h.
When Active Stop-and-Go Assist is active the

If the system detects that the driver has not
s
teered the vehicle for a considerable period of
time or has removed their hands from the steering
wheel, an optical warning is given Nrst. Display 1
appears in the driver's display. If the driver still
does not steer the vehicle, or gives no conNrma-
tion to the system, a warning tone sounds in addi-
tion to the visual warning message.
If the driver does not react to this warning for a
considerable period, an emergency stop is initi-
ated (  page 283).
The warning is not issued or is stopped as soon as
the system detects that the driver has touched
the steering wheel. Touch detection may be limited or inoperative in
t
he following situations:
= The driver is wearing gloves.
= There is a steering wheel cover on the steering
wheel.
If Active Steering Assist detects that a system
limit has been reached, a visual warning is issued
and a warning tone sounds.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers ( page 263).
System limits
Active Steering Assist has a limited steering tor-
que for lateral guidance. In some cases, the steer-
ing intervention is not suPcient to keep the vehi-
cle in the lane.
The system 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. =
*nsuPcient r
oad illumination.
= The windscreen is dirty, misted up, damaged
or covered in the vicinity of the camera, e.g.
by a sticker.
= No, or several, unclear lane markings are pres-
ent for one lane, or the markings change
quickly, forexample, in a construction area or
junctions.
= 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.
= The road is narrow and winding.
= There are obstacles on the lane or projecting
out into the lane, suchas object markers.
= If transport equipment, forexample a trailer or
bicycle rack, is attached to the trailer hitch
and the electrical connection has been cor-
rectly established.
The system does not provide assistance in the fol-
lowing conditions: = On very tight bends and when turning. 282
Driving and parking

=
When cr ossing junctions.
= At roundabouts or toll stations.
= When actively changing lane without switching
on the turn signal indicator.
= When the tyre pressure is too low. &
WARNING Risk of accident if A
ctive Steer-
ing Assist unexpectedly stops functioning
If the system limits of Active Steering Assist
ar
e reached there is no guarantee that the
system will remain active or will keep the vehi-
cle in lane. 
Always keep your hands on the steering
wheel and obser
ve the traPc carefully. 
Always steer the vehicle paying attention
t

o traPc conditions. &
WARNING Risk of accident if A
ctive Steer-
ing Assist unexpectedly intervenes
The detection of lane markings and objects
ma
y malfunction and cause unexpected steer-
ing interventions. 
Steer according to tr
aPc conditions. Activating/deactivating Active Steering Assist
R

equirements:
= ESP n
is activated, but is not intervening.
= Active Distance Assist DISTRONIC is activa-
ted.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Driving 
Activate or deactivate Active Steering Assist . Function of Active Emergency Stop Assist
Active Emergency Stop Assist uses touch sensors
t
o monitor whether the driver holds the steering
wheel and initiates an emergency stop if neces-
sary.
If Active Steering Assist is deactivated, the accel-
erator and brake pedal are monitored as well as
the steering wheel. A warning is issued when the
steering wheel is not being held or when a pedal is not depressed, and the vehicle is in danger of
lea
ving the lane.
If Active Steering Assist is switched oM, the sys-
tem is available from a speed of approx. 60 km/h. Active Emergency Stop Assist issues the following
w
arnings in order:
= Display message 1 appears in the driver's
display.
= In addition to display 1 a warning tone
sounds.
= The message Beginning emergency stop will
appear in the driver's display, a continuous
warning tone will sound, the vehicle will no Driving and parking
283

longer accelerate and, if necessary, slight belt
t
ensioning will be produced.
= The vehicle speed is reduced in increments
until it is at a standstill. Sharp brake impulses
are also produced.
% Vehicles with Driving Assistance Package: If
A
ctive Distance Assist DISTRONIC is active
and the driver unfastens the seat belt and
driver's door, an emergency stop can be initi-
ated immediately.
Depending on the country, a lane change to the
adjacent r
ight-hand lane is carried out, if possible.
When automatic braking is initiated, Active Dis-
tance Assist DISTRONIC is deactivated. Depend-
ing on the country, the hazard warning light sys-
tem is switched on.
When the vehicle is stationary, the following
actions are carried out:
= The vehicle is secured with the electric park-
ing brake.
= The vehicle is unlocked.
= If possible, an emergency call is placed to the
Mercedes-Benz emergency call centre. Before automatic braking is initiated, you can can-
cel A
ctive Emergency Stop Assist by steering.
You can cancel the intervention by Active Emer-
gency Stop Assist aser automatic braking is initi-
ated by one of the following actions:
= Accelerating or braking: the emergency stop is
cancelled, but the warning message, warning
tone and power steering remain active
= Steering: power-assisted steering is cancelled,
the warning message and warning tone remain
active and the vehicle continues to be braked
% Active Emergency Stop Assist can initiate an
emer
gency stop a maximum of three times
within a driving cycle. Aser that, Active Steer-
ing Assist and Active Emergency Stop Assist
are disabled until the vehicle has been restar-
ted.
System limits
F
or the detection of vehicles and other obstacles,
observe the system limits of the following func-
tions:
= Active Distance Assist DISTRONIC
( page 273) =
A
ctive Steering Assist (  page 281)
= Active Lane Change Assist ( page 284)
= Active Brake Assist (  page 287) Active Lane Change Assist
Function of Active Lane Change Assist
A

ctive Lane Change Assist supports the driver
when changing lanes and is activated by indicat-
ing brieOy.
Active Lane Change Assist is only an aid and not a
substitute for your attention. It is essential that
you observe the notes on driving systems and
your responsibility in the vehicle Owner's Manual;
you may otherwise fail to recognise dangers.
The following conditions must be fulNlled for a
lane change:
= You are on a motorway or high-speed major
road.
= The vehicle speed is between approximately
80 km/h and 180 km/h.
= The neighbouring lane is separated by a bro-
ken lane marking. 284
Driving and parking

=
N o vehicle or obstacle is detected in the adja-
cent lane.
= Since the last time the vehicle was started,
the sensors have detected a vehicle at a suita-
ble distance behind your vehicle.
= Active Lane Change Assist is selected in the
multimedia system.
= Active Distance Assist DISTRONIC and Active
Steering Assist are activated on motorways.
The system is not available and must be reactiva-
ted in the following situations:
= Active Distance Assist DISTRONIC and Active
Steering Assist were already activated before
entering the motorway.
= The system brieOy does not detect the road
you are on as a motorway or a motorway-like
road, e.g. on a motorway junction.
As soon as Active Lane Change Assist detects a
suitable road, you can reactivate it with J,
M or N. Driver display in the
$ssLstDnFH menu 1
Green arrow: lane change initiated
2 Red arrow: lane change cancelled
When Active Lane Change Assist is available, the
± displa
y appears along with green arrows in
the driver display. If the system has been activa-
ted but is not currently available, the ± displayappears along with grey arrows in the driver dis-
pla
y.
If no vehicle or obstacle is detected in the adja-
cent lane and a lane change is permitted, the lane
change begins aser the driver has indicated
brieOy. The lane change is shown to the driver
with a Oashing green arrow next to the ±
steering wheel symbol. Green arrow 1 is dis-
played in the appropriate adjacent lane in the
Assistance menu in the driver display. The Lane
change to the left message, for example, also
appears.
Active Lane Change Assist can be cancelled in
various situations, including the following:
= Change in the surrounding conditions (e.g.
detected obstacle).
= The driver removes their hands from the steer-
ing wheel.
= The driver steers with too much force or in the
opposite direction.
= The driver moves the turn signal indicator in
the opposite direction. Driving and parking
285

=
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