MERCEDES-BENZ C-CLASS SALOON 2022 Owners Manual


Select Early , Medium or Late. Speed Limit Assist
Function of Speed Limit Assist
%
Speed Limit Assist uses OpenStreetMap data,
whic h is made available under the conditions
of the Open Database License (OBbL). For
more information, see: https://
www.osmfoundation.org/wiki/licence.
Speed Limit Assist detects speed limits with multi-
function camer
a and displays them in the driver's
display and optionally in the head-up display. The
camera also detects speed limits with a restric-
tion indicated by an additional sign (e.g. when
wet).
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers (  page 227).
Warning when the maximum permissible speed is
exceeded
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 e

xceeded before a warning is issued. You can
specify whether the warning is to be just a visual
warning or an acoustic one as well (  page 259).
Display in the driver's display 1
Permissible speed
2 Permissible speed when there is a restriction
3 Additional sign with restriction
% TraPc signs whic
h have an impact on the
maximum permissible speed, e.g. signs indi-
cating the beginning or end of dual carriage-
ways, can also be detected. 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, cruise
control or Active Distance Assist DISTRONIC for
adoption and is shown in the head-up display.
If Speed Limit Assist cannot determine the cur-
rent maximum permissible speed (e.g. due to
missing signs), the following display appears in
the driver's display: This is displayed continuously if the vehicle is in a
countr

y where Speed Limit Assist is not suppor-
ted. Speed Limit Assist is not available in all coun-
tries. 258
Driving and parking

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.
= If traPc signs are diPcult to detect, e.g. due
to dirt, snow, ice, insuPcient lighting or driving
too close to the vehicle in front, or because
they are covered, faded, damaged, badly posi-
tioned or twisted.
= Digital LED traPc signs may not be detected
correctly or at all due to technical factors,
suchas transmission frequency.
= If signs or the road layout is ambiguous, e.g.
traPc signs in roadworks, at exits and ramps,
in neighbouring lanes or parallel roads. =
If signs do no t conform to the standard.
= If signs or road layouts are speciNc to the
country, forexample, at or beyond construc-
tion sites.
= Aser sharp turns and tight bends, when traPc
signs are outside the camera's Neld of vision.
= If you overtake vehicles with traPc signs
which are aPxed or attached to them.
= If you are using transport equipment secured
with a trailer coupling, suchas a bicycle rack,
the system may react to restrictions for car/
trailer combinations.
Setting Speed Limit Assist
Multimedia system: 4 © 5
Settings 5
Assistance
5 Assistance 5
Speed Limit Assist
Setting an additional audible indication 
Activate or deactivate the function.
Setting the warning threshold
This v
alue determines the speed at which a warn-
ing is issued when exceeded. 
Select Warning threshold. 
Set the desired speed.
% 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 242). TraPc
Sign Assis
t Function of
T
raPc Sign Assist
% This function is an on-demand feature
(  pag

e 22).
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- Driving and parking
259

ing when you exceed the maximum permissible
speed.
In some countr
ies, 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 Assist 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 227). 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, cruise
control 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 260
Driving and parking

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: 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 449).
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. Driving and parking
261

=
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 262).
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. =
If tr
aPc signs are diPcult to detect, e.g.
because they are dirty, covered, faded, cov-
ered with ice, damaged, badly positioned,
poorly lit or twisted.
= Active traPc signs with LED displays may not
be detected correctly or at all due to technical
factors, suchas transmission frequency.
= If the information on the navigation system's
digital map is incorrect, incomplete or out of
date.
= If signs or the road layout is ambiguous, e.g.
traPc signs in roadworks, at exits and ramps,
in neighbouring lanes or parallel roads.
= If signs do not conform to the standard.
= If signs or road layouts are speciNc to the
country and deviate from the route guidance
in the navigation system, e.g. at or beyond
construction sites.
= Aser sharp turns and tight bends, when traPc
signs are outside the camera's Neld of vision.
= If you overtake vehicles with traPc signs
which are aPxed or attached to them. =
If y ou are using transport equipment secured
to the vehicle with a trailer coupling, suchas a
bicycle rack, restrictions for car/trailer combi-
nations may be considered valid if applicable.
Setting TraPc Sign Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic Sign Assist
Activating or deactivating the speed warning 
Activate or deactivate Speed limit warning.
Activating or deactivating further functions of Traf-
f
ic Sign Assist 
Switch Further warnings or Additional warn-
ing tone on or oM.
Setting the warning threshold
This v
alue determines the speed at which a warn-
ing is issued when exceeded. 
Set the desired speed under Warning thresh-
old .
% This function is an on-demand feature
(  pag

e 22). 262
Driving and parking

TraPc
light vie w Information about the
tr
aPc light view
The traPc light view supports the driver when
waiting in front of a red light by displaying the
camera image on the central display. The camera
image is displayed when the driver is the Nrst vehi-
cle in front of the red light and faded out when the
vehicle drives oM.
Displaying traPc light view
Requirements: = The Traffic light view option is switched on .
= A traPc light view is available.
Multimedia system: 4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic light view
% This function is not available in all countries.
If the vehicle is in Nr
st position at a traPc light,
the camera image with traPc light view is shown
on the central display.
When the vehicle pulls away, the camera image is
faded out. 
Activate D or deactiv
ate E Traffic
light view .
Using other available functions 
Select =. 
Select On request or Automatic .
If On request is se
t and a traPc light view is
available, the Please tap here for traffic light
view. message is displayed. The camera image
is shown aser conNrmation of the message.
When Automatic is set, the camera image is
automatically displayed when the traPc light
view is available. Blind Spot Assist and Active Blind Spot Assist
Function of Blind Spot Assist and Active Blind
Spo
t Assist with exit warning
Blind Spot Assist and Active Blind Spot Assist use
radar sensors to monitor the area up to 40 m
behind and 3 m next to your vehicle.
The system can detect vehicles travelling from
speeds of approximately 12 km/h and issue a
warning if they move into the monitoring range. Status display in the driver's display

If a vehicle is detected in the warning range and
y
ou switch on the turn signal indicator in the cor-
responding direction, a double warning tone
sounds once, and the warning lamp Oashes red in
the corresponding outside mirror. Red radar
waves 2 are displayed next to your vehicle in the
assistance graphic.
If the turn signal indicator remains on, the display
in the outside mirror Oashes for all other detected
vehicles, but no further warning tone sounds. If
you overtake a vehicle quickly, no warning is
given.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers ( page 227). &
WARNING Risk of accident despit
e Blind
Spot Assist
Blind Spot Assist does not react to vehicles
appr
oaching and overtaking you at a greatly
diMerent speed.
Blind Spot Assist cannot warn drivers in this
situation. 
Always pay careful attention to the tr
aPc
situation and maintain a safe distance at
the side of the vehicle. Exit warning
The e

xit warning is an additional function of Blind
Spot Assist and Active Blind Spot Assist and can
warn vehicle occupants attempting to leave a sta-
tionary vehicle about approaching vehicles. &
WARNING Risk of accident despit
e exit
warning
The exit warning neither reacts to stationary
objects nor t
o persons or road users
approaching you at a greatly diMering speed.
The exit warning cannot warn drivers in these
situations. 
Always pay particular attention to the
tr
aPc situation when opening the doors
and make sure there is suPcient clear-
ance. If a vehicle is detected in the monitoring range,
t
he red warning lamp lights up in the correspond-
ing outside mirror.
If a vehicle occupant pulls the door handle on the
side of the warning, a warning tone sounds twice
and the ambient lighting in the respective door
and the warning lamps in the corresponding out-
side mirror Oash red.
% Vehicles with ambient lighting: t
he Warning
assistance of the ambient lighting can be
activated and deactivated ( page 147).
% The warning assistance can diMer depending
on t
he equipment and may vary according to
the setting.
This exit warning is only available when Blind Spot
Assis
t is active.
Aser the vehicle is switched oM, the exit warning
continues to function for a few minutes. When the
outside mirror warning lamp Oashes three times,
the exit warning is no longer available.
The exit warning is only an aid and not a substi-
tute for the attention of vehicle occupants. The
responsibility for opening and closing the doors 264
Driving and parking

and for leaving the vehicle remains with the vehi-
cle occupants.
Sy
stem limits
Blind Spot Assist and Active Blind Spot Assist may
be limited in the following situations, in particular:
= if there is dirt on the sensors or the sensors
are obscured
= in poor visibility, e.g. due to fog, heavy rain or
snow
= if there are narrow vehicles, e.g. bicycles or
motorbikes
= if the road has very wide or narrow lanes
= if vehicles are not driving in the middle of their
lane
Warnings may be issued in error when driving
close to crash barriers or similar continuous lane
borders. Always make sure that there is suPcient
distance to the side for other traPc or obstacles.
Warnings may be interrupted when driving along-
side long vehicles, for example lorries, for a pro-
longed time. Blind Spot Assist and Active Blind Spot Assist are
no t operational when reverse gear is engaged.
Blind Spot Assist and Active Blind Spot Assist are
not operational if transport equipment, for exam-
ple a trailer or bicycle rack, is attached to the
trailer hitch and the electrical connection has
been correctly established.
Additionally, the exit warning may be limited in the
following situations:
= when the sensors are covered by adjacent
vehicles in narrow parking spaces
= when people approach the vehicle
= in the event of stationary or slowly moving
objects
Function of the brake application of Active Blind
Spot Assist
% The brake application function is only availa-
ble f

or vehicles with a Driving Assistance
Package.
If Active Blind Spot Assist detects a risk of a side
im
pact in the monitoring range, a course-correct-
ing brake application is carried out. This is
designed to help you avoid a collision. The course-correcting brake application is availa-
ble in t

he speed range between approximately
30 km/h and 200 km/h. &
WARNING Risk of accident despit
e brake
application of Active Blind Spot Assist
A course-correcting brake application cannot
alw
ays prevent a collision. 
Always steer, brake or accelerate your-
self, especiall
y if Active Blind Spot Assist
warns you or makes a course-correcting
brake application. 
Always maintain a safe distance at the
sides. &
WARNING Risk of accident despit
e Active
Blind Spot Assist
Active Blind Spot Assist does not react in the
f
ollowing situations:
= If you overtake vehicles at a high speed.
= If vehicles approach and overtake you at a
greatly diMerent speed. Driving and parking
265

Active Blind Spot Assist may not give warnings
or int
ervene in such situations. 
Always pay careful attention to the tr
aPc
situation and maintain a safe distance at
the side of the vehicle. If a course-correcting brake application occurs,
t
he red warning lamp Oashes in the outside mirror
and a warning tone sounds. In addition, a display
1 indicating the danger of a side collision
appears in the driver's display.
In rare cases, the system may make an inappro-
priate brake application. This brake application may be interrupted at any time if you steer slightly
in t

he opposite direction or accelerate.
System limits
Either a course-correcting brake application
appropriate to the driving situation, or none at all,
may occur especially in the following situations:
= Vehicles or obstacles, e.g. crash barriers, are
located on both sides of your vehicle.
= A vehicle approaches too closely on the side.
= You have adopted a sporty driving style with
high cornering speeds.
= You brake or accelerate signiNcantly.
= A driving safety system intervenes, e.g. ESP n
or Active Brake Assist.
= ESP n
is deactivated.
= A loss of tyre pressure or a defective tyre is
detected.
= Transport equipment, for example a trailer or
bicycle rack, is attached to the trailer hitch
and the electrical connection has been cor-
rectly established. Activating/deactivating Blind Spot Assist or
A
ctive Blind Spot Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Collision avoidance 
Activate or deactivate Active Blind Spot
Assist. Active Lane Keeping Assist
Function of Active Lane Keeping Assist
A

ctive Lane Keeping Assist monitors the area in
front of your vehicle by means of the multifunction
camera (  page 227) and can warn you before
you leave your lane unintentionally. The system
can guide you back into your lane through a
course-correcting steering intervention and addi-
tionally warns you with vibration pulses in the
steering wheel. Active Lane Keeping Assist is
available in the speed range between 60 km/h
and 200 km/h. 266
Driving and parking

The system can intervene in the following situa-
tions:
= A
ctive Lane Keeping Assist detects a lane
marking.
= One of your front wheels goes over a lane
marking.
If you activate the turn signal indicator, a steering
intervention does not occur on the corresponding
side.
If you leave the lane without activating the turn
signal indicator, but danger of a collision with a
moving obstacle is detected in your lane, a steer-
ing intervention does not occur.
Vehicles with Blind Spot Assist or Driving Assis-
tance Package: if the system detects an obstacle,
such as another vehicle in the adjacent lane, a
steering intervention will occur regardless of the
turn signal indicator. Display
1 will appear in t
he driver's display and a
warning tone will sound in the following situations:
= A steering intervention by Active Lane Keeping
Assist lasts longer than approximately ten sec-
onds.
= The system carries out two or more steering
interventions within approximately three
minutes without any steering intervention from
the driver.
In the Active Lane Keeping Assist settings, you
can set the sensitivity of the system and set the
level of support. Additionally, you can set whether
the system should react to discontinuous lane markings or only continuous lane markings
( pag

e 269).
Status displays for Active Lane Keeping Assist
ï White: A
ctive Lane Keeping Assist is deac-
tivated.
If ESPn
is deactivated or a tire pressure
loss warning is displayed, Active Lane
Keeping Assist is automatically deactiva-
ted.
ï Yellow: t
here is a malfunction. Please also
observe the display messages.
ð Grey: A
ctive Lane Keeping Assist is activa-
ted, but not operating.
ð Green: A
ctive Lane Keeping Assist is acti-
vated and operating. If the system is opera-
tional on only one side, the lane marking is
shown in green on the corresponding side.
ð Red: A
ctive Lane Keeping Assist has gui-
ded you back into your lane with a course-
correcting steering intervention. The status
display will Oash if there is also a haptic
warning in the steering wheel. The lane Driving and parking
267