Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
233
Operation
234
Automatic stopping and starting
234
Operation overview
235
Start control
235
Stop/resume control
235
Set/change the desired speed
236
Set the clearance level
236
Special driving situations
236
Overtaking and towing
237
Malfunctions
237
The Adaptive Cruise Control (hereinafter referred to as ACC) maintains the set
speed or the distance to the vehicle ahead without the accelerator or brake
pedal being pressed.
The front of the vehicle and the distance to the vehicle ahead is monitored by
a radar sensor » page 212.
The state in which the ACC maintains the speed or the proximity is described
as control from here on.
WARNING■
The general information relating to the use of assistance systems must
be observed » page 212, in section Introduction .■
The driver must always be ready to take over the operation of the accel-
erator and brake pedal.
■
The ACC does not react when approaching a stationary obstacle, such as
traffic jams, vehicle breakdowns or vehicles waiting at a traffic light.
■
The ACC does not respond to crossing or oncoming objects.
■
If the ACC does not decelerate fast enough, immediately apply the vehi-
cle's foot brake.
WARNINGFor safety reasons, do not use the ACC under the following conditions.■When driving in turning lanes, motorway exits or construction sites, to
avoid an unwanted acceleration to the stored speed.■
When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
■
When road conditions are poor (e.g. ice, slippery road, gravel, dirt road).
■
Driving in “sharp” corners or in steep gradients / on steep inclines.
■
When driving through places where metal objects (such as metal build-
ings, railway tracks, etc.) can be found.
■
When driving through very divided and enclosed spaces (such as large-ca-
pacity garages, car ferries, tunnels and the like.).
Note
■ The ACC is designed primarily for use on motorways.■The ACC reduces the speed by automatically releasing the accelerator or by
means of a braking procedure as appropriate. If the brakes are used for an au-
tomatic speed reduction at any moments, then the brake light illuminates.■
In case of failure of more than one brake light on the vehicle or on the con-
nected trailer, the ACC becomes unavailable.
■
The control automatically cancels the engagement of the brake supportive
assistance systems (e.g. ESC) or when the maximum permitted engine speed is
exceeded.
Settings in Infotainment
Read and observe
on page 233 first.
›
Press the button, then tap on the function surface
→
Driver assistance
.
■ ACC (adaptive cruise control) - Setting for the adaptive cruise control
■
Driving progr.:
- Set the vehicle acceleration when adaptive cruise control is
activated 1)
■
Last selec. Distance
- Switch on/off of the last distance selected
■
Distance:
- Set the distance monitoring to the vehicles ahead
1)
This can be set in the menu on vehicles with a travel mode option as follows » page 240 .
233Assist systems
When cornering
When driving into or driving out of long corners, it could be that a vehicle is
travelling in the adjacent lane and is scanned by the radar » Fig. 297 -
. The
host vehicle is then controlled according to this vehicle.
Narrow vehicles or vehicles travelling side by side
A narrow or offset vehicle driving can only be recognized by the ACC if this is
located in the scanning range of the radar » Fig. 297 -
.
Other vehicles changing lanes
Vehicles that change onto the lane with a small distance » Fig. 298 -
may not
be detected by ACC in good time.
Stationary vehicles
The ACC does not detect stationary objects! When a vehicle detected by the
ACC turns or sheers off and there is a stationary vehicle in front of this vehi-
cle, » Fig. 298 -
the ACC does not respond to the stationary vehicle.
Vehicles with special load or special body parts
Other vehicles with a load or with body parts protruding from the sides, back
or top of the vehicle contour may not be detected by the ACC.
Overtaking and towing
Read and observe
on page 233 first.
When overtaking
When your vehicle is being controlled at a speed that is lower than the set
speed and the turn signal is operated, ACC assesses this situation as meaning
that the driver wishes to overtake. The ACC automatically accelerates the vehi-
cle, thereby reducing the proximity to a vehicle ahead.
If your vehicle changes to the overtaking lane and no vehicle is detected
ahead, ACC accelerates until the set speed is reached and then keeps it con-
stant.
Acceleration can be cancelled at any time by touch on the brake pedal or
pressing the button on the lever
» Fig. 296 on page 235 .
Towing a trailer
When towing, or if another accessory is connected to the trailer socket, ACC
control is set with a lower rate. The manner of driving should therefore be
adapted to this limitation.
Malfunctions
Read and observe
on page 233 first.
If, for some unknown reason, ACC is not available, the warning light
appears
in the display of the instrument cluster and an appropriate message is shown.
Sensor covered / dirty
If the sensor cover or the sensor is dirty or covered, a message appears on the
instrument cluster display stating there is no sensor view. Clean the sensor
cover or remove the obstacles » Fig. 264 on page 212 .
If there is no sensor view in the winter, the snow on the sensor under the cov- er could be the reason. The ACC is functional again after the snow melts away
from the sensor.
ACC not available
If the ACC is currently unavailable, a message concerning the unavailability ap-
pears. Stop the vehicle, switch off the engine and then start it again. If ACC
continues to be unavailable, seek the assistance of a specialist garage.
ACC fault
With an ACC fault, an error message appears. Seek help from a specialist ga-
rage.
Front Assist
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
238
Operation
238
Distance warning
238
Warning and automatic braking
238
Deactivation/activation
239
Malfunctions
240
The Front Assist (hereinafter referred to as the system) warns you of the dan-
ger of a collision with a vehicle or another obstacle in front of the vehicle, and
tries to avoid a collision or mitigate its consequences by automatically applying
the brakes where necessary.
The area in front of the vehicle is monitored by a radar sensor » page 212.
237Assist systems
The first protection level can be deactivated in one of the following ways.
▶ in the menu in Infotainment
→ →
Driver assistance
.
▶ Deactivating the TCS » page 214.
▶ By selecting the driving mode
Sport
» page 241 .
Provided that the driving mode
Sport
is not selected, the system is activated
over the two levels of protection after switching the ignition off and on again.
The second level of protection
The system intervenes only if the situation is evaluated as critical, such as
when panic braking at high speeds.
This level of protection cannot be deactivated.
Vehicles with the Front Assist system
Using this information, a system intervention may also occur when there is the danger of a collision with an obstacle detected in front of the vehicle.
Lane Departure Warning (Lane Assist)
Introduction
Fig. 303
Sensor for Lane Assist
This chapter contains information on the following subjects:
Settings in Infotainment
243
Operation
244
Activation / deactivation
245
Malfunctions
245
The lane departure warning (following known as system) helps to keep the ve-
hicle between the boundary lines of a lane.
The system recognises the boundary lines of the lane using a sensor
» Fig. 303 .
When the vehicle approaches a detected line between lanes, the system
makes a light movement of the steering wheel in the opposite direction to the
boundary line. This corrective steering intervention can be manually overrid-
den at any time.WARNING■ Please take note of the general points relating to the use of assistance
systems » page 212, in section Introduction .■
Lane Assist can help you keep the vehicle within the lane. However, it
does not steer the vehicle for you. The driver retains full responsibility for
steering at all times.
■
Some objects or markings on the road can be recognised as the boundary
lines - an erroneous steering intervention may be the result.
WARNINGThe system may not be able to recognise the boundary line, or recognise it
incorrectly, for example, in the following situations.■
When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
■
When driving in “sharp” bends.
■
The sensor is blinded by the sun or oncoming traffic.
■
The field of view of the sensor is limited by an obstacle or a preceding ve-
hicle.
CAUTION
Do not attach any stickers or similar objects in front of the sensor on the wind-
screen to avoid impairing the functions of the system.
Note
■ The system is designed for driving on motorways and roads with adequate
longitudinal markings.■
The system can detect both continuous and broken lines.
Settings in Infotainment
Read and observe
and on page 243 first.
›
Press the button, then tap on the function surface
→
Driver assistance
.
■ Lane Assist (lane departure warning sys.) - Settings for Lane Assist
■
Active
- Activate/deactivate the assistant
■
Adaptive lane guidance
- Activate/deactivate adaptive lane guidance
243Assist systems
OperationFig. 304
Monochromatic display of the instrument cluster: Examples of
system indications
Fig. 305
Colour display of the instrument cluster: Examples of system in-
dications
Read and observe
and on page 243 first.
System displays » Fig. 304 and » Fig. 305
The system is active, but not ready to intervene.
The system is active and ready to intervene.
The system intervenes when approaching the right-hand boundary lane.
Adaptive tracking takes place.
The system can intervene when the following basic conditions are present. The system is activated.
The vehicle is travelling at more than around 65 km/h 1)
.
The boundary line of at least one side of the lane is detected.
The driver's hands are on the steering wheel.
The lane is more than 2.5 m in width.
If the turn signal is switched on (e.g. when turning), no steering intervention takes place when the vehicle approaches the boundary line. The system re-
gards the situation as an intended lane change.
Warning lights in the instrument cluster The system is active, but not ready to intervene.
The system is active and ready to intervene or is currently intervening.
Adaptive lane assist
Adaptive tracking helps to keep the vehicle in the position between the boun-
dary lines selected by the driver, by means of steering intervention.
If the position within the lane is changed, the system quickly adapts and holds
the newly-selected position.
Steering wheel vibrations
In the following situations, it may occasionally be the case that due to the
steering wheel vibrations the syst4em indicates that a driver steering inter-
vention is required.
▶ The system is not able to keep the vehicle by a within the lane due to a
steering intervention.
▶ During an intense system-related steering intervention, the system suddenly
cannot recognize the boundary lines.WARNINGThe system function may be restricted if, for example there is danger due
to ruts on a downhill road or in a crosswind.1)
Not valid for vehicles with the traffic jam assistant » page 245.
244Driving
Activation / deactivationRead and observe
and on page 243 first.
The activation/deactivation of the system can be carried out in one of two
ways. ▶ In the instrument cluster display » page 48, Menu item
Assist systems
.
▶ In Infotainment » page 243, Settings in Infotainment .
Adaptive tracking can also be enabled or disabled In Infotainment.
After switching off and switching on the ignition, the system setting is re-
tained.
Note
The system setting is stored (depending on the Infotainment type) in the ac-
tive user account personalisation » page 49.
Malfunctions
Read and observe
and on page 243 first.
If, for some unknown reason, the system is not available, an appropriate mes-
sage appears in the display of the instrument cluster.
Sensor covered / dirty
If the windscreen is dirty, iced or misted up in the sensor area, a message ap-
pears indicating that there is no sensor view. Clean the windscreen or remove
the obstacles from the sensor area.
System unavailable
If the system is currently unavailable, a message concerning the unavailability
appears. Try to re-activate the machine. If the system still is not available, seek
the assistance of a specialist garage.
System fault
In the case of a system fault, an error message appears. Seek help from a spe-
cialist garage.
Request to take over steering
If the system detects that there are no hands are on the steering wheel, this
will not work properly. You will be prompted to take over steering. Place your
hands on the steering wheel.
Traffic jam assistant
Introduction
This chapter contains information on the following subjects:
Function
245
Operating conditions
245WARNING■ Please take note of the general points relating to the use of assistance
systems » page 212, in section Introduction .■
The driver must always have hands on the steering wheel and be ready to
take over steering of the vehicle himself (accelerate or brake).
Note
The system is designed primarily for use on motorways.
Function
Read and observe
on page 245 first.
The traffic jam assistant (referred to as system) helps to keep the vehicle with-
in the lane at speeds below 65 km/h while keeping the distance to the vehicle
ahead.
The system is only available for vehicles with Automatic transmission.
The traffic jam assistant is an extension of the systems Lane Assist » page 243
and ACC » page 233 and works by using the functions of these two systems.
For this reason, the chapters on System Lane Assist and ACC are to be read
carefully and the safety notes are to be observed.
Operating conditions
Read and observe
on page 245 first.
The system activation occurs automatically whilst fulfilling the following ba-sic conditions.
Lane Assist with the adaptive tracking is enabled, the boundary lines on
both sides are recognized lane » page 243.
ACC is activated and the regulation » page 233 follows.
The vehicle speed is below 65 km/h.
245Assist systems
Assistant for emergencies
Introduction
This chapter contains information on the following subjects:
Function
246
Operating conditions
246WARNING■ Please take note of the general points relating to the use of assistance
systems » page 212, in section Introduction .■
The system is intended for emergency situations when the driver is sud-
denly unable to take over the steering task. Therefore, never try to test out
the system - there is a risk of an accident!
Function
Read and observe
on page 246 first.
The assistant for emergencies (following known as system) detects inactivity
of the driver, which for example can be caused by a sudden loss of conscious-
ness. The system then performs measures as safely as possible to decelerate
the vehicle to a stop.
The system is only available for vehicles with Automatic transmission.
The assistant for emergencies is an extension of the systems Lane Assist
» page 243 and ACC » page 233 and works by using the functions of these two
systems.
For this reason, the chapters on System Lane Assist and ACC are to be read
carefully and the safety notes are to be observed.
System intervention
If the system detects the driver's inactivity, it draws attention to this fact by a beep and a message on the display of the instrument cluster. It keeps the ve-
hicle in its lane.
If the driver does not take over the steering even after a repeated warning,
the system automatically brakes the vehicle and after it has come to a stand-
still the parking brake switch on.
With automatic braking, the hazard warning system is switched on.
The automatic braking interventions can be cancelled by pressing the acceler-
ator pedal or by means of a steering intervention.
Operating conditions
Read and observe
on page 246 first.
The system can intervene when the following basic conditions are present. Lane Assist is activated and the boundary line is detected at least on one
side of the lane » page 243.
ACC is activated and the regulation » page 233 follows.
Traffic sign recognition
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
247
Operation
247
Additional display
248
Malfunction and information messages
248
The traffic sign recognition (following known as system) shows certain traffic
signs (e.g. speed limits) on the display of the instrument cluster and if necessa-
ry warns against excessive speeds.
WARNING■ Please take note of the general points relating to the use of assistance
systems » page 212, in section Introduction .■
Vertical traffic signs must always take precedence over the traffic signs
shown in the display. The driver is always responsible for correctly assess-
ing the traffic situation.
■
Speed specifications in the displayed road signs refer to the customary
speed units. For example, the display
the display can therefore refer to
km / h or mph, specific to the country.
246Driving
I
I-PAD holder
99
I-Size27
Ignition lock200
Images Display
135
Main menu153
safe removal of the data source133
Select Image Source153
service154
Set to135
Image viewer153
Immobilizer199
Import contacts136, 141
Import destinations186
Import my destinations186
Inertia reels17
Information about the towing process288
Information call168
Information system43
Auto Check Control43
Door alarm43
Eco tips43
Gear recommendation44
MAXI DOT display48
Multifunction display46
Service interval display49
Infotainment Auxiliary heating (auxiliary heating and ventila-tion)
119
Restart126
Software update131
Infotainment language132, 140
Infotainment menu CAR
198
Media (video)155
Sound131
TV tuner156
Infotainment menus127
Infotainment operation125
Infotainment screen125
Infotainment operation using an application in the external device
128
Infotainment screen132, 139
Areas125
important information124
Important information124
keyboard126
Maintenance124
Operation125
Input screen Language characters
140
Input screen with keyboard126
Instrument cluster32
Auto Check Control44
Warning lights33
Interior light73
Interior lighting72, 73
Ambient lighting73
Interior monitor58
Intermediate target190
ISOFIX26
J
Jack
281
- fit284
Jukebox151
Jump-starting287, 288
K
KESSY Unlock / lock
55
key Starting / stopping the engine
200
Switch on/off ignition200
Key Changing battery
290, 291
Take out emergency key54
keyboard126
L
L-band
135
Lamp failure Warning light
41
Lamps Warning light
41
Lan Departure Warning Activation / deactivation
245
Lane Assist Malfunctions
245
See lane departure warning243
Settings in Infotainment243
Warning light38
Lane Departure Warning243
Operation244
Settings in Infotainment243
Lane recommendation191
Language characters132
Last destinations184
Latitude180
LEAVING HOME70
Lever ACC
235
Cruise control230
Front Assist239
Operation of the information system45
Speed limiter with ACC232
Speed limiter with GRA232
Turn signal/main beam68
Windscreen wipers76, 77
Liability for defects5
Light66
Cockpit72
COMING HOME / LEAVING HOME70
Daytime running lights67
Flash68
Fog lights/rear fog light69
Fog lights with CORNER function70
318Index
Hazard warning light system70
Headlight assistant71
Headlight cleaning system77
Parking light70
Replacing bulbs299
Turn signal/main beam68
Xenon headlight69
Light Assist71
Lighting Entry space
71
Interior lighting72
Luggage compartment101
Lights Automatic driving light control
68
Dipped beam67
Driving abroad71
Headlight range control67
Parking lights67
Switching on and off67
Warning lights33
List of available stations
143
of available stations (TV tuner)157
of telephone contacts169
With folder / track list148
List of paired external devices164
List of traffic reports196
Load305
Lock Individual settings
56
KESSY55
Locking Central locking button
55
in case of emergency293
Remote control54
Lock steering lock199
Long cargo channel95
Longitude180
Luggage compartment101
Cover104
Fastening elements101
Fastening the flooring103
Fixing nets102
Floor covering on both sides103
foldable hook103
Lighting101
Net on the luggage compartment cover103
Net partition111
Removable light109
Roll-up cover105
Side pockets106
Storage compartments under the floor cover- ing
107
tray with cargo element106
unlock manually293
Unlock the boot lid293
Variable loading floor109
Luggage compartment cover104
Roll-up cover105
Luggage storage Multi-function pocket
108
M
Main beam
68
Warning light39
Main menu Android Auto
177
Apple CarPlay178
CAR198
Images153
Media146
Media Command158
MirrorLink®179
Navigation181
Radio142
SmartLink176
SMS172
TV tuner156
Video DVD155
Waypoint mode194
Manage favourites141
Manage Favourites136
Manage memory137
Managing paired devices164
Managing saved routes194
Manoeuvre Graphical driving recommendations
191
Nav. announcements192
Manoeuvring216
Manual air conditioning Air distribution control
117
Controls114
Manual gear changing See Gear changing
206
Map automatic scale
188
Display181
Display of road signs137
Display options187
Display options in the split screen189
Fast Map188
Lane recommendation137
Main menu181
Manual scale188
Map alignment189
Operation181
POI display137
Road sign189
Show POI187
|Alignment188
MAXI DOT See MAXI DOT display
48
MAXI DOT display Assist systems menu item
48
Audio menu item48
Main menu48
319Index