MERCEDES-BENZ C CLASS 2023 Owners Manual

=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 freeway exit or slip road for example, or aser
you turn at a intersection, the display in the driv- er\bs display can thus be updated without a traPc
sign having been detected.\bUpdate the digital road map of the navigation
system regularly so that the traPc sign assis-
tant can work optimally.
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\bs display:
TraPc Sign Assist 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.
If TraPc Sign Assist is temporarily or permanently
unavailable due to a technical malfunction or soil-
ing of the windshield, the warning light ê
appears in the driver display.\bPlease also note the information on the dis-
play messages of the traPc sign assistant
(  page 382).
Warning when the maximum permissible speed is
exceeded
The system can warn you if you unintentionally exceed the maximum permissible speed. Depend-
ing on the country, you can set in the multimedia system by how much the maximum permitted
speed may be exceeded before a warning is given.
You can switch oM the warning or set whether the
warning should be visual (by Oashing the traPc
sign in the driver display) or visual and audible.
The selected setting is conNrmed by an indication
in the driver\bs display.
1Warning only visual2WARNING oM\bThe type, duration and trigger thresholds of
the speed warning, as well as the possibility of
setting the trigger thresholds above which the warning is to be triggered, are subject to the country-speciNc legislation of the country of
delivery of the vehicle.
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-
Driving and parking209

tion of road, forexample on freeway slip roads orone-way 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 44 mph (70 km/h).
Warning at stop signs: TraPc Sign Assist can warn
you up to a speed of approximately 44 mph
(70 km/h) if you are about to drive past a stop
sign unintentionally. For this to be possible, the signs must be clear, forexample if the systemdetects 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 44 mph
(70 km/h) if you are about to drive through a red light unintentionally.
The following conditions must be fulNlled:
= Several traPc lights have been detected.
= All traPc lights detected are red.=
At least one of the red traPc lights detected is
on the front passenger side beside the vehi-
cle\bs own lane.
= The traPc lights are in the following sequence
(from top to bottom): red, yellow, green.\bIf the function is available, you can activate or deactivate the warnings at pedestrian cross- ings, stop signs and red lights in the TraPc
Sign Assist menu under Further Warnings
(  page 211).
System limits
The system 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 windshield in the vicinity
of the multifunction camera or if the camera is fogged up, damaged or obscured.
= if the traPc signs are diPcult to see because,
forexample, they are dirty, obscured, faded, iced over, damaged, inconveniently positioned,
insuPciently illuminated or distorted.
= 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\bs
digital map is incorrect, incomplete or out of
date.
= if the signs, road markings or road layout are
ambiguous, e.g. in the case of traPc signs in
construction sites, at exits and driveways, in the case of adjacent lanes or parallel roads, in
the case of pedestrian crossing markings at traPc lights
= if the signage or road markings do not comply
with the standard
= if the signage, road markings or road guidance
is country-speciNc and deviates from the route
guidance of the navigation system, e.g. in or
aser road works
= Aser sharp turns and tight bends, when traPc
signs are outside the camera\bs Neld of vision.210Driving and parking

=If you overtake vehicles with traPc signs
which are aPxed or attached to them.

q Setting TraPc Sign Assist
Multimedia system: 4 © 5
Settings 5
Assistance
5 Assistance 5
Traffic Sign Assist
Activating or deactivating the speed warningSwitch oM Speed Limit Warning .
The speed warning remains oM according to
country-speciNc legislation until the next time
the vehicle is switched on or oM and the driv-
er\bs door is opened.
Change the type of speed warning
Change the warning to Visual only or Visual
and acoustic .
Setting the warning threshold
This value determines the speed at which a warn-
ing is issued when exceeded.
Set the desired speed under Warning Thresh-
old.Activating or deactivating further functions of Traf-
Nc Sign AssistSwitch further warning contents on or oM.
The available functions are switched on or oM.
Set the type of warning for other functions
Select Visual only or Visual and acoustic .
TraPc light view

qInformation about the traPc 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.

q 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\bThis function is not available in all countries.
If the vehicle is in Nrst 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 deactivate E Traffic
Light View .
Using other available functions
Select =.Select On Request or Automatic .
If On Request is set and a traPc light view is
available, the 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.Driving and parking211

TraPc Light Information service&WARNING Risk of an accident or injury
due to distraction, incorrect or missing
data
The traPc light information display is an aid
and cannot replace the observation of the
actual driving situation.
Keep the actual traPc situation con-
stantly in view when approaching a traf-
Nc light and when changing lanes.Avoid looking at the Instrument Display
and Head-up Display for a long time.
The traPc light icon and countdown of remaining
time until the next green phase are shown in the driver display.
Example view on the driver\bs display
1TraPc light icon and countdown of remaining
time until the next green phase time
The display is hidden about Nve seconds before
the traPc lights change to green.
\bThe display also goes out in the following
cases:
= When turning oM before the intersection
into a cross or side street
= When turning before the intersection\bThe direction arrows are displayed depending
on the following functions:
= A turn signal is set= A lane is recommended during active
route guidance
If neither function is active, the remaining time until the next green phase for the lane
straight ahead is displayed.\bUse of the traPc light information service
requires the regular transmission of vehicle
positions and driving directions to Mercedes-
Benz. The data is immediately anonymized by Mercedes-Benz and forwarded to the providerof the traPc light information service. The
vehicle positions and driving directions are
deleted aser a very short time (a few sec-
onds) and are not permanently saved.
If you do not want to transmit the vehicle
positions and driving directions, you have the following options:
= You deactivate the service in the
Mercedes me portal.
= You have the service deactivated at an
authorized Mercedes-Benz Center.\bThis traPc light information service is only
available in certain cities and regions.212Driving and parking

The function is supported under the following con-
ditions:
= The vehicle is equipped with a multimedia sys-
tem featuring navigation and a communication
module with an activated, integrated SIM card.
= You have a user account for the Mercedes me
Portal.
= The vehicle has been connected with the user
account.
= The navigation services option is available,
subscribed to and activated in the Mercedes me Portal.
= The traPc light information service is within
the scope of the navigation service.
The current vehicle position and the direction of travel are transmitted via the communicationmodule and aligned with the data from the traPc
light information service provider. The provider gathers data from traPc lights which transmit
their changing phases. When the vehicle approaches an inter-section with networked traPc
lights, data is transmitted to the vehicle.A set turn signal les or right and lane recommen-
dations during active route guidance are taken
into account for the display.
The service is for information purposes only and is
not linked to any other vehicle functions, systems or components. Please note that the displayed data is not available in all traPc areas and may be
incorrect.
Certain light signal systems automatically adapt
their switching times to the current traPc situa-
tion. This can lead to a sudden change in the
countdown display.
The driver\bs display is shown aser selecting the
Assistance menu . If another menu is selected, the
traPc light countdown is not displayed.
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-
tionsPlease observe the notes on driving systems and your responsibility. You could otherwise fail to rec-ognize dangers.
System limits
The display does not appear in the following situa- tions, for example:
= There is no traPc light data available.
= The time remaining until the next green phase
is less than ten seconds.
= Emergency vehicles or local public transport
are located in the vicinity of the intersection.
= The data transmission from the vehicle has
been interrupted.
= Light signal systems are located in a construc-
tion site area or are being maintained.
= The light signal system is malfunctioning.
= The subscription to the service has expired.Driving and parking213

Blind Spot Assist and Active Blind Spot Assist

qFunction of Blind Spot Assist and Active Blind
Spot Assist with exit warning
Blind Spot Assist and Active Blind Spot Assist use radar sensors to monitor the area up to 130 s
(40 m) behind and 10 s (3 m) next to your vehicle.
The system can detect vehicles traveling from speeds of approximately 8 mph (12 km/h) and issue a warning if they move into the monitoring
range.
Status display in the driver\bs display

Exit warning
The exit 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 despite exit
warning
The exit warning neither reacts to stationary
objects nor to 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 traPc situation when opening the doors
and make sure there is suPcient clear-
ance.
If a vehicle is detected in the monitoring range,
the 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.\bVehicles with ambient lighting: the Warning
Support of the ambient lighting can be activa-
ted and deactivated (  page 132).\bThe warning assistance can diMer depending
on the equipment and may vary according to
the setting.
This exit warning is only available when Blind Spot
Assist 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 doorsand for leaving the vehicle remains with the vehi- cle occupants.
System 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 trucks, for a pro- longed time.
Blind Spot Assist and Active Blind Spot Assist are
not operational when reverse gear is engaged.Driving and parking215

Additionally, the exit warning may be limited in thefollowing 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

q Function of the brake application of Active
Blind Spot Assist\bThe brake application function is only availa-
ble for vehicles with a Driving Assistance
Package.
If Active Blind Spot Assist detects a risk of a side
impact in the monitoring range, a course-correct- ing brake application is carried out. This isdesigned to help you avoid a collision.
The course-correcting brake application is availa-
ble in the speed range between approximately 20 mph (30 km/h) and approximately 125 mph
(200 km/h).
&WARNING Risk of accident despite brake
application of Active Blind Spot Assist
A course-correcting brake application cannot
always prevent a collision.
Always steer, brake or accelerate your- self, especially if Active Blind Spot Assist
warns you or makes a course-correcting
brake application.Always maintain a safe distance at the
sides.
If a course-correcting brake application occurs, the 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\bs 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 the 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 tire pressure or a defective tire is
detected.216Driving and parking

qActivating/deactivating Blind Spot Assist or
Active Blind Spot Assist
Multimedia system:
4 © 5
Settings 5
Assistance
5 Collision AvoidanceActivate or deactivate Active Blind Spot
Assist .
Active Lane Keeping Assist

qFunction of Active Lane Keeping Assist
Active Lane Keeping Assist monitors the area in front of your vehicle by means of the multifunctioncamera (  page 179) 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 37 mph (60 km/h) and 124 mph (200 km/h).
The system can intervene in the following situa-
tions:
= Active 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 amoving 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 the driver\bs 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 thelevel of support. Additionally, you can set whether
the system should react to discontinuous lane
Driving and parking217

markings or only continuous lane markings
(  page 219).
Status displays for Active Lane Keeping AssistïWhite: Active Lane Keeping Assist is deac-
tivated.
If ESP n
is deactivated or a tire pressure
loss warning is displayed, Active Lane
Keeping Assist is automatically deactiva-
ted.ïYellow: there is a malfunction. Please also
observe the display messages.ðGray: Active Lane Keeping Assist is activa-
ted, but not operating.ðGreen: Active 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.ðRed: Active 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 lanemarking is shown in red only on the side
for which there is a warning.
Vehicles without Driving Assistance Pack-
age: if both lane markings are simultane-
ously shown in red in the status display, Active Lane Keeping Assist has initiated an
emergency stop (  page 198).
Active Lane Change Assist display in the "Assis-
tance" menu
If the front wheel of the vehicle drives over a
detected lane marking, this will be highlighted red in the Assistance menu in the driver\bs display.
\bVehicles with active ambient lighting: if Warn-
ing Support is activated, the Active Lane
Keeping Assist warning is also accompanied
by ambient lighting (  page 132).
System limits
In the following situations, a lane-correcting steer-
ing intervention may not occur but rather a warn-
ing may be given on the steering wheel, depend- ing on the situation:
= You clearly and actively steer, brake or accel-
erate.
= If a driving safety system intervenes, such as
ESP n
, Active Brake Assist or Active Blind Spot
Assist.
= You have adopted a sporty driving style with
high cornering speeds or high rates of acceler-
ation.
= If transport equipment, for example a trailer or
bicycle rack, is attached to the trailer hitch
and the electrical connection has been cor-
rectly established.
218Driving and parking