2022 MERCEDES-BENZ C-CLASS ESTATE Owners Manual

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 255).
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. 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: 254
Driving and parking

=
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
= Cruise control
= Variable limiter
Further information about Active Distance
Assist DISTRONIC ( page 250).
% Further information on speed adaptation
(  pag

e 253).
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 fr
ont and vehicles cutting in.
Active Stop-and-Go Assist requires you, as the
driver, 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 236).
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 250).
= Active Steering Assist is activated and active
( page 259).
= You are travelling no faster than 60 km/h.
When Active Stop-and-Go Assist is active the

System limits
The sy
stem limitations of Active Distance Assist
DISTRONIC and Active Steering Assist apply to
Active Stop-and-Go Assist ( page 257). DSR (Downhill Speed Regulation)
Function of DSR (Downhill Speed Regulation)
DSR is an aid t
o assist you when driving downhill.
It keeps the speed of travel at the selected target
speed. The steeper the downhill gradient, the
greater the D S R braking eMect on the vehicle.
On Oat stretches of road and uphill gradients, the
DSR brakes the vehicle minimally or not at all.
When DSR is activated and the transmission is in
position h, k or i, DSR controls the driving
speed. The target speed can be set to a value
between 2 km/h and 18 km/h. By braking or
accelerating, you can drive at a higher or lower
speed than the target speed at any time.
If you drive faster than 45 km/h or change the
driving programme (except in F/G), DSR
switches oM automatically. The î off message
appears in the driver's display. The status indica- tor in the driver's display goes out. You also hear
a w

arning tone.
Information on DSR &
WARNING Risk of skidding and accident
when DSR is activ
ated on slippery road
surfaces
If the driven speed and the target speed diMer
,
the wheels may lose traction. 
Take into account the road surface and
t
he diMerence between the driving speed
and target speed before activating DSR. Observe the notes on driving systems and your
r
esponsibility; you may otherwise fail to recognise
dangers ( page 236).
You are always responsible for keeping control of
the vehicle and for assessing whether the downhill
gradient can be negotiated. Depending on road
surface and tyres, DSR may not always be able to
keep to the target speed. Select a target speed
suitable for the environmental conditions and also
apply the brakes yourself if required. Activating or deactivating DSR (Downhill Speed
R
egulation)
Requirements:
= You are driving at 40 km/h or slower.
If the vehicle speed is too high, the Max.
speed 40 km/h message appears in the driv-
er's display.
= Active Distance Assist DISTRONIC, TEMPO-
MAT and variable limiter are switched oM.
Multimedia system: 4 © 5
Settings 5
Assistance 
Select î.
A s

tatus display appears in the driver's display
when the function is activated.
% When you switch to the G dr
ive program,
the function is automatically activated. 256
Driving and parking

Changing the target speed

To increase the target speed: swipe upw ards
from the bottom of control panel 1.
= The target speed is increased by 1 km/h.
or 
Press and hold 1 at M t
he top of the con-
trol panel.
The target speed is increased in 1-km/h incre-
ments. 
To decrease the target speed: swipe do
wn-
wards from the top of control panel 1.
= The target speed is decreased by 1 km/h.
or 
Press and hold 1 atN t
he bottom of the
control panel.
The target speed is reduced in 1-km/h incre-
ments.
The set target speed is shown î ne
xt to the
status display in the driver's display. Active Steering Assist
Function of Active Steering Assist
A
ctive Steering Assist is only available up to a
speed of 210 km/h. The system helps you to stay
in the centre of the lane by means of moderate
steering interventions. Depending on the speed
driven, Active Steering Assist uses the vehicles
ahead and lane markings as a reference. %
Depending on the country, in the lower speed
r
ange Active Steering Assist can use the sur-
rounding traPc as a reference. If necessary,
Active Steering Assist can then also provide
assistance when driving outside the centre of
the lane.
If the detection of lane markings and vehicles
ahead is im
paired, Active Steering Assist switches
to passive mode. The system provides no support
in this case.
Permanent status display in the driver's display
Ø Grey: activ
ated and passive
Ø Green: activ
ated and active
Ø Red, Oashing: pr
ompt to the driver to
actively conNrm or transition from active to
passive status, system limit detected
% During the transition from active to passive
s

tatus, the Ø symbol is shown as enlarged
and Oashing. Once the system is passive, the
Ø symbol is shown as grey in the driver's
display. Driving and parking
257

Contact detection
The dr
iver is required to keep their hands on the
steering wheel at all times and be able to inter-
vene at any time to correct the course of the vehi-
cle and keep it in lane. The driver must expect a
change from active to passive mode or vice versa
at any time. 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
consider
able period, an emergency stop is initi-
ated (  page 259).
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
the 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 236).
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 t
he 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 road 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. 258
Driving and parking

=
If tr ansport 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.
= When crossing 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 monitors the steer-
ing wheel and t

he accelerator and brake pedals. If
the system detects a lack of driver activity and the
vehicle threatens to leave the lane, a warning can
be issued and an emergency stop initiated.
Vehicles without Driving Assistance Package: The
system is available from a speed of approx.
60 km/h.
Vehicles with Driving Assistance package: If
Active Steering Assist is switched oM, the system
is available from a speed of approx. 60 km/h.
If the system detects that the vehicle is threaten-
ing to leave the lane, a warning can be issued and
an emergency stop initiated.
= The driver does not touch the steering wheel
for a longer period of time or no steering
movement can be measured for a longer
period of time (depending on the vehicle
equipment).
= Neither the accelerator nor the brake pedal is
depressed. Driving and parking
259

%
Vehicles with Driving Assistance package: if
A ctive Steering Assist is switched on and
active, only the steering wheel is monitored by
the system. If the driver does not touch the
steering wheel for a longer period of time, a
warning may be given despite pedal actuation.
Also observe the instructions on the contact
detection of Active Steering Assist
(  page 257). Active Emergency Stop Assist issues the following
w
arnings in order:
= Display message 1 appears in the driver's
display. =
In addition t
o 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
longer accelerate and, if necessary, slight belt
tensioning 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.
Vehicles with Driving Assistance Package:
Depending on t
he country, a lane change to the
adjacent right-hand lane is carried out, if possible.
It is only possible to change across one lane and
only into the right-hand lane, and not onto the
hard shoulder.
When automatic braking is initiated, Active Dis-
tance Assist DISTRONIC is deactivated. Depend- ing on the country, the hazard warning light sys-
t
em 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 Active 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 260
Driving and parking

%
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 248)
= Active Steering Assist (  page 257)
= Active Lane Change Assist ( page 261)
= Active Brake Assist (  page 263)
Vehicles without Driving Assistance Package:
Active Emergency Stop Assist is inactive in the fol-
lowing cases:
= Active Lane Keeping Assist has reached a sys-
tem limit. =
A
ctive Lane Keeping Assist is not operational
(grey status display) or deactivated (white sta-
tus display) ( page 277). 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.
For this, the following conditions must be fulNlled:
= 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.
= No 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. =
A
ctive 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. Driving and parking
261