Radar sensorFig. 174
Mounting location of the radar
sensor
Read and observe on page 142 first.
The radar sensor (hereinafter referred to only sensor) uses electromagnetic
waves to capture the traffic situation ahead of the vehicle. The radar is located
under a cover » Fig. 174.
The sensor is part of the ACC » page 163 and Front Assist » page 168systems.
The sensor function may be impaired in the event of one of the following sit-
uations arising. ▶ The sensor cover is soiled by mud, snow and the like.
▶ The area in front and around the sensor cover is obscured by labels, auxiliary
lights and similar.
▶ When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
▶ In exceptional cases, the sensor may be covered up in the area under the
cover, e.g. due to snow.
If the sensor cover of the sensor is dirty or covered, a message to that effect
from the ACC » page 168 or Front Assist » page 171 system appears in the
instrument cluster display.
WARNING■ If you suspect that the sensor has been damaged, deactivate the ACC
» page 163 und Front Assist » page 168 system. Have the sensor checked
by a specialist garage.■
The sensor can become misaligned by collisions or by damage to the front
of the vehicle, the wheel arch or the underside of the vehicle. This can lead
to impaired function of the sensor - risk of accident! Have the sensor
checked by a specialist garage.
■
The area in front and around the sensor cover should not be obscured by
labels, auxiliary lights and similar. This can lead to impaired function of the
sensor - risk of accident!
CAUTION
Remove snow with a brush and ice with a solvent-free de-icer from the sensor
cover.
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Stability Control (ESC)
144
Anti-lock braking system (ABS)
144
Traction control (TCS)
144
Electronic differential lock (EDL and XDS)
145
Driver Steering Recommendation (DSR)
145
Brake Assist (HBA)
145
Hill Start Assist (HHC)
145
Multi collision brake (MCB)
145
Trailer stabilization system (TSA)
146
Auto Hold function
146
This chapter describes the functions of the brake and stabilization systems.
The error display is in Chapter » page 31, Warning lights .
The brake and stabilization systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.
143Assist systems
WARNINGThe increased stopping and starting comfort brought by the system must
not tempt you to take any safety risks.■
The system is not able to stop the vehicle under all circumstances, such
as on icy or otherwise slippery ground, or on gradients.
■
When stopping and parking always make sure that the vehicle is correctly
secured » page 134 , Parking .
CAUTION
In some washing systems it is necessary that the vehicle can roll freely. There-
fore, the system must be deactivated before driving through a car wash.
Note
The system is able to secure the vehicle for about 10 minutes, after which the
vehicle will be automatically secured by the parking brake.
Parking aid (ParkPilot)
Introduction
This chapter contains information on the following subjects:
Function
147
Display in the Infotainment display
148
Activation / deactivation
149
Automatic system activation when moving forward
149
The parking aid (hereinafter referred to as system) draws attention via acous-
tic signals or the Infotainment display when manoeuvring around obstacles in
the vicinity of the vehicle.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 142, in section Introduction .■
Moving persons or objects may not be recognized by the system sensors.
■
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the system signals. For this reason, such people or
objects may not be recognised by the system sensors.
WARNING (Continued)■ External noise sources may affect the signals of the system sensors. Un-
der adverse conditions, this may cause objects or people not to be recog-
nised by the system.■
Before reversing, you should make sure that there are no small obstacles,
such as rocks, thin posts, trailer draw bars etc. in front or behind your vehi-
cle. Such obstacles may not be recognised by the system sensors.
CAUTION
■ Keep the system sensors » Fig. 177 on page 147 clean, snow-and ice-free
and do not cover with any objects of any kind, otherwise the system function-
ing may be impaired.■
Under adverse weather conditions (heavy rain, water vapour, very low or
high temperatures, etc.), the system function may be limited - “incorrect recog-
nition of obstacle”.
■
Accessories fitted to the vehicle rear, such as bicycle carriers, can impair the
system function.
Function
Fig. 177
Installation locations of the sensors on the left side of the vehi-
cle: front/rear
147Assist systems
›Stop the vehicle and steer opposite until the yellow lines 6 the red line 8fade into each other (required roadway alignment). Hold the steering wheel
in this position.
Orientation lines are displayed » Fig. 187 on page 153 in the display.›
Carefully move backwards.
›
Stop the vehicle when
appears the display, or at a safe distance from the
obstacle situated behind the vehicle.
Note
The guidance in the parking space is cancelled due to the system when the
steering wheel is set for a period of time against the required road direction.
The parking is to be started again.
Mode - driving up to a trailer / distance monitoring
Fig. 190
Display
Read and observe and on page 151 first.
In this mode, the area behind the vehicle is shown at the top of the display.
Vehicles with towing hitch
If your vehicle is factory fitted with a tow-bar, this mode supports the driver
when the vehicle approaches a trailer draw bar.
Display » Fig. 190
Ball head of the towing device
Lines for the distance estimation (at a distance of about 10 cm)
Line for approaching a trailer draw bar
Trailer draw bar
The line
C
moves depending on the steering angle and indicate the roadway
on which the vehicle would take with the current steering wheel position.
ABCDVehicles without towing hitch
If your vehicle is not factory equipped with a towing device, a red line for moni-
toring the distance to obstacles is displayed at a distance of 40 cm behind the
vehicle.
Mode - monitor the area behind the vehicle
Read and observe
and on page 151 first.
In this mode, the area behind the vehicle is shown in the display.
The mode is suited for the entire view of the situation behind the vehicle.
Park Assist
Introduction
This chapter contains information on the following subjects:
Functioning
156
Parking space search
157
Switch to park mode
157
Reverse parking
157
Park forward
158
Departing from a parallel parking space
159
Automatic brake assist
159
Information messages
159
Park Assist (following referred to system) helps drivers park in suitable parallel
and perpendicular parking places or also to manoeuvre out of parallel parking
spaces.
The system takes over the steering movements when parking or leaving a
parking space. The driver operates the pedals and the shift lever or gear selec-
tor.
The state in which the steering wheel is operated by the system, is referred to
as parking operation.
The Park Assist is an extension of the parking aid » page 147 and operates on
the basis of data collected by the ultrasonic sensors.
For this reason, the chapter on the parking aid is to be read carefully and the safety notes are to be observed.
155Assist systems
Operation descriptionFig. 201
Operating elements of the speed
limiter
Read and observe on page 162 first.
Overview of the control elements of the speed limiter » Fig. 201ASpeed Limiter disable (set limit delete) Interrupt control (sprung position) Activate CCS (required condition for the subsequent activation of
the speed limiter) To activate the speed limiter the switch is to be adjusted to posi-
tion
, then press D
to operate.
BTake control again a)
/ Increase speed - short press (in increments
of 1 km/h), long press (in increments of 10 km/h)CStart regulation / reduce speed - short press (in increments of 1
km/h), long press (in increments of 10 km/h)DSwitch between CCS » page 160 and Speed Limitera)
If no speed limit is set, the current speed is set as the speed limit.
At the start of the regulation, the current speed is set as the speed limit and
displayed in the instrument cluster display. The warning light illuminates in
the instrument cluster.
Exceeding the speed limit during the regulation
If exceeding the speed limit is required during the regulation, for example
when overtaking, then the accelerator pedal is to be fully pressed.
When exceeding the speed limit, an acoustic signal sounds and the warning
light in the instrument cluster flashes.
The regulation is resumed once the speed has fallen below the set limit.
CAUTIONWhen driving downhill, exceeding the set speed limit may occur. When exceed-
ing the limit, an acoustic signal sounds and the warning light in the instru-
ment cluster flashes.
Note
By pressing the button D » Fig. 201 during the regulation this is cancelled and
the CCS is activated.
Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the following subjects:
Operation
164
Automatic stop-start
165
Operation Overview
165
Start control
166
Stop/resume control
166
Set/change the desired speed
166
Set the clearance level
167
Special driving conditions
167
Information messages
168
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 143.
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 142, in section Introduction .■
The driver must always be ready to take over steering of the vehicle him-
self (accelerate or brake).
163Assist systems
WARNING (Continued)■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).
■
When driving around “sharp” bends.
■
When riding on a steep gradient / high slope.
■
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.
OperationFig. 202
Instrument cluster display: Examples of ACC displays
Fig. 203
Instrument cluster display: Examples of ACC status displays
Read and observe
on page 163 first.
The ACC allows you to set a speed of 30 - 160 or 210 km / h (depending on
equipment) and the distance to the vehicle ahead in the range of a very short
to a very long distance.
The ACC adjusts the set speed with respect to the detected vehicle ahead,
thus maintaining the selected proximity.
The ACC can detect a vehicle that is up to approx. 150 m ahead using the radar
sensor.
ACC display » Fig. 202
Vehicle detected (control active).
Line showing the displacement of the distance when setting » page 167,
Set the clearance level .
12164Driving
Narrow vehicles or vehicles travelling side by side
Narrow vehicles or vehicles travelling side by side are not detected by the ra-
dar sensor until they are within the sensor's range » Fig. 205 -
.
If necessary, slow down the car by applying the brake.
Other vehicles changing lanes
Vehicles that change onto the lane with a small proximity » Fig. 206 -
do not
have to be detected by the radar sensor in time. The result may be a delayed
ACC response.
If necessary, slow down the car by applying the brake.
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 vehicle,
» Fig. 206 -
the ACC does not respond to the stationary vehicle.
In such cases, take over the steering and stop the vehicle by applying the foot
brake.
When overtaking
When your vehicle is being controlled (the speed is lower than that which is
stored) and the indicator is activated, the ACC interprets this situation as
meaning that the driver intends to overtake. The ACC automatically acceler-
ates the vehicle, thereby reducing the proximity to a vehicle ahead.
If the vehicle changes to the fast lane and no vehicle is detected ahead, the
ACC accelerates until the set speed is reached and then keeps it constant.
Acceleration can be cancelled at any time by touch on the brake pedal or
pressing the button on the lever
» Fig. 204 on page 165 .
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.
Control should therefore be disabled whenever you are driving behind or over-
taking such a vehicle.
Towing a trailer
When towing, or in when another accessory is connected to the trailer socket
the ACC control is set with a lower rate. The manner of driving should there-
fore be adapted to this limitation.Information messages
Read and observe
on page 163 first.
The warning symbols are shown in the instrument cluster display.
ACC: no sensor view!
The sensor cover or the sensor is covered or dirty.
Stop the car, switch off the engine and clean the sensor cover or remove the
obstacle » Fig. 174 on page 143 .
If this message appears in winter, the cause can be snow covering the sensor.
The ACC is functional again after the snow melts away from the sensor.
If the message appears again after starting the engine, the position of the lev- er should be
» Fig. 204 on page 165 adjusted.
ACC not available.
The ACC is not available for an unknown reason.
Stop the vehicle, switch off the engine and then start it again. If the ACC is still
not available, push the lever into position . Seek help from a specialist ga-
rage.
Error: ACC
There is an ACC system error.
Push the lever into position / press. Seek help from a specialist garage.
Speed limit
Increase the speed accordingly and start control
» page 166.
Front Assist
Introduction
This chapter contains information on the following subjects:
Operation
169
Distance warning (dangerous distance)
169
Warning and automatic braking
169
Disable/enable
170
Information messages
171
168Driving
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 143.WARNING■
Please take note of the general points relating to the use of assistance
systems » page 142, in section Introduction .■
The system does not respond to crossing or oncoming objects.
CAUTION
In case of failure of more than one brake light on the vehicle or on the electri-
cally connected trailer, the system becomes unavailable.
Operation
Read and observe
and on page 169 first.
The system support is provided in the following manner.▶ Alerts you about a dangerous proximity to the vehicle ahead.
▶ Warns you of an impending collision.
▶ Prepares the brakes for emergency braking prior to a detected danger.
▶ Assists with a brake action triggered by the driver.
▶ If the driver fails to respond to a detected danger, an automatic braking ac-
tion is performed.
The system can work only if the following basic conditions are met. The system is activated.
The TCS is activated » page 143, Braking and stabilisation systems .
The vehicle is moving forwards at a speed of more than approx. 5 km/h.
Note
The system can be impaired or may not be available, for example when driving
in “sharp ”curves or with an ESC engagement » page 144.Distance warning (dangerous distance)Fig. 207
Symbols in the instrument cluster: Note (dangerous
proximity)
Read and observe and on page 169 first.
The display of the distance warning is for vehicles with MAXI DOT display.
If a safe interval to the vehicle ahead falls below a minimum the display of the
instrument cluster shows the symbol
» Fig. 207 .
Immediately increase the proximity if the current traffic situation allows you
to do so!
The proximity at which the warning is displayed depends on the current speed.
The warning may occur when driving between about 60 km/h and 210 km/h.
Warning and automatic braking
Fig. 208
Symbols in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 169 first.
Emergency braking at low speed
In a driving speed range of about 5 km/h to about 30 km/h the automatic brak- ing action is not preceded by a warning. With an immediate impact hazard au-
tomatic braking is done with the breaking force increasing in stages.
169Assist systems
Information messagesRead and observe
on page 177 first.
The warning messages are available for both the assistant “blind spot moni-toring” and the Rear Traffic Alert and are displayed together in the instrument
cluster.
Rear Traffic Alert/ Blind Spot Monitor currently not avail.
The system is not available for an unknown reason.
Stop the vehicle, switch off the engine and then start it again.
If after engine start the message persists, then the help of a professional or- ganisation is required.
Error: Rear Traffic Alert/ Blind Spot Monitor
System error detected. Seek help from a specialist garage.
R. Traf. Alert/Blind Spt Mntr not avail. No sensor view.
The sensors are dirty or covered.
Stop the vehicle, stop the engine, clean the area in front of and around the
sensors or remove the obstructing item.
If after engine has restarted the message persists, then the help of a profes-
sional organisation is required.
Trailer: Rear Traf. Alert/Blind Spot Mntr not avail.
If the vehicle has a towing device, a trailer or any other accessory connected
that was done at the factors then the system is not available.
Traffic jam assistant
Introduction
This chapter contains information on the following subjects:
Operation
179
Operating conditions
179
The traffic jam assistant helps at speeds below 60 km / h to keep the vehicle within the lane while keeping the distance to the vehicle ahead.
The system is only available for vehicles with Automatic transmission.
WARNING■
Please take note of the general points relating to the use of assistance
systems » page 142, 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.
Operation
Read and observe
on page 179 first.
The traffic jam assistant is an extension of the systems Lane Assist » page 174
and ACC » page 163 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 179 first.
The system can work when the following basic conditions are present. Lane Assist with the adaptive tracking is enabled, the boundary lines on
both sides are recognized lane » page 174.
ACC is activated and the regulation » page 163 follows.
The vehicle is travelling less than about 60 km/h.
The system activation is automatic provided that the above conditions are met and a preceding vehicle is detected. The warning light
illuminates in the in-
strument cluster.
Assistant for emergencies
Introduction
This chapter contains information on the following subjects:
Operation
180
Operating conditions
180
179Assist systems