The sensor is part of the ACC» page 110 and Front Assist » page 114systems.
The sensor function may be impaired in the events of one of the following. ▶ The sensor cover is soiled (e.g. with mud, snow etc.).
▶ The area in front of and around the sensor cover is obscured (e.g. by labels,
auxiliary headlights etc.).
▶ When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
If the sensor is covered or dirty, the corresponding message appears in the in-
strument cluster display for the ACC system » page 114, Malfunctions or Front
Assist system » page 116, Malfunctions .WARNING■
If you suspect that the sensor is damaged, deactivate the ACC system and
Front Assist system » page 111, » page 116 . Have the sensor checked by a
specialist garage.■
A collision or damage in the front or lower area of the vehicle could affect
the sensor function - there is risk of accident! Have the sensor checked by
a specialist garage.
■
Do not cover the area in front of and around the sensor cover. This can
lead to impaired function of the sensor - risk of accidents!
CAUTION
Remove the snow with a brush and the ice with a solvent-free de-icer.
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Stability Control (ESC)
101
Anti-lock braking system (ABS)
101
Engine drag torque control (MSR)
101
Traction control (TCS)
102
Electronic differential lock (EDL and XDS)
102
Brake Assist (HBA)
102
Hill Start Assist (HHC)
102
Multi collision brake (MCB)
103
The brake and stabilization systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.
The error display is in Chapter » page 28, Warning lights .WARNINGThe general information relating to the use of assistance systems must be
observed » page 100, in section Introduction .
Stability Control (ESC)
Read and observe
on page 101 first.
The ESC improves vehicle stability when driving at the limit (e.g. if the vehiclestarts to skid) by braking individual wheels to maintain the desired direction.
If there is a TCS intervention, the indicator light flashes in the instrument
cluster.
Anti-lock braking system (ABS)
Read and observe
on page 101 first.
ABS prevents the wheels locking when braking. Thereby, it helps the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not pump the brakes or lift off the brake
pedal.
Engine drag torque control (MSR)
Read and observe
on page 101 first.
MSR counteracts the tendency of the drive wheels to lock during downshifts
or sudden deceleration (e.g. on icy or an otherwise slippery road surface).
If the drive wheels should lock, then the engine speed is automatically in-
creased. This reduces the braking effect of the engine and the wheels can ro-
tate freely again.
101Assist systems
Multi collision brake (MCB)Read and observe
on page 101 first.
MCB helps to decrease speed after a collision by means of automatic braking
interventions and to stabilise the vehicle. This reduces the risk of a subse-
quent crash due to uncontrolled vehicle movement.
The automatic brake interventions can take place only if the following condi-
tions are met.
There was a front, side and rear-end collision of a certain severity.
The impact speed was greater than approx. 10 km/h.
The brakes, the ESL and other required electrical systems remain function-
al after impact.
The accelerator pedal is not actuated.
Parking aid (ParkPilot)
Introduction
This chapter contains information on the following subjects:
Function
103
Display in the Infotainment display
104
Activation / deactivation
105
Automatic system activation when moving forward
105
The parking aid (hereinafter referred to as "system") draws attention to obsta-
cles in the vicinity of the vehicle via acoustic signals or on the Infotainment
display when manoeuvring.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 100, in section Introduction .■
Moving persons or objects may not be recognised by the system sensors.
■
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the system signals. There is a danger that such ob-
jects or people may not be recognised by the system sensors.
WARNING (Continued)■ External noise sources may affect the signals of the system sensors.
There is a danger that obstacles may not be recognised by the system sen-
sors.■
Before reversing, you should satisfy yourself that there are no small ob-
stacle, such as a rock, thin post etc., in front or behind your vehicle. Such
obstacles may not be recognised by the system sensors.
CAUTION
■ Keep the system sensors » Fig. 127 on page 103 clean, snow-and ice-free
and do not cover with any objects of any kind, otherwise the system function-
ing may be impaired.■
In adverse weather conditions (heavy rain, water vapour, very low or high
temperatures, etc.), the functioning of the system may be impaired - “incorrect
recognition of obstacles”.
■
Accessories additionally installed on the vehicle rear, such as bicycle carriers,
can impair the system function.
Function
Fig. 127
Installation location of the sensors on the left side of the vehicle:
front / rear
103Assist systems
Fig. 128
Sampled areas and range of the
sensors
Read and observe and on page 103 first.
The system uses ultrasound waves to calculate the distance between the
bumper and an obstacle. The ultrasonic sensors are, depending on vehicle
equipment,, located in the back or in the front bumper » Fig. 127.
Depending on the equipment, the following system variants are possible
» Fig. 128 .
▶ Variant 1: warns of obstacles in the areas
C
,
D
.
▶ Variant 2: warns of obstacles in the areas
A
,
B
,
C
,
D
.
Approximate range of sensors (in cm)
Area » Fig. 128Variant 1
(3 sensors)Variant 2
(7 sensors)A-120B-60C160160D6060
Audible signals
The interval between the acoustic signals becomes shorter as the clearance is
reduced. At a distance of approx. 30 cm a continuous tone starts to sound -
danger area. From this moment do not continue to move towards the obsta-
cle!
The acoustic signals can be set in Infotainment » Owner's Manual Infotain-
ment .
Towing a trailer
When towing, or when another accessory is connected to the trailer socket on-
ly the areas
A
and
B
» Fig. 128 are active in the system.
NoteThe signal tones for front obstacle recognition are factory-set to be higher
than for rear obstacle recognition.
Display in the Infotainment display
Fig. 129
Display
Read and observe and on page 103 first.
Function surfaces and warnings » Fig. 129ARoad display. Depending on the Infotainment type: Switching off park assistant dis-
play. Switching audible parking signals on/off.Change to rear-view camera display .There is an obstacle in the collision area (the distance to the obstacle
is less than 30 cm).
Stop moving in the direction of the obstacle!There is an obstacle in the road (the distance to the obstacle is great-
er than 30 cm).An obstacle is located outside of the road (the distance to the obsta-
cle is greater than 30 cm).System failure (there is no indication of obstacles).
Road display
The road display
A
» Fig. 129 indicates the road on which the vehicle would
take the current steering wheel and shift / selector lever position.
The shift lever is in the neutral position and the gear selector is in mode N. the
road display is at the front.
104Driving
WARNING■The general information relating to the use of assistance systems must
be observed » page 100, in section Introduction .■
The camera may not be soiled or obscured, otherwise the system function
will be significantly affected - there is a risk of accident. For information on
cleaning » page 132 , Exterior car care .
CAUTION
■
The camera image is distorted by contrast with eyesight. The display is
therefore only of limited use for estimating distances to following vehicles.■
Some items, such as thin columns, chain link fences or lattice, may not be
represented adequately in terms of display resolution.
■
In a crash or damage the vehicle's rear camera can possibly deviate from the
correct position. If this is the case, have the sensor checked by a specialist ga-
rage.
Note
The camera can be equipped with a cleaning system » page 60. The spraying is
carried out automatically when the rear window is sprayed.
Operation
Fig. 132
Installation location of the camera / scanned area behind the ve-
hicle
Read and observe
and on page 106 first.
The camera for capturing the area behind the vehicle is in the grip of the bootlid » Fig. 132 .
Area behind the vehicle » Fig. 132
Detection range of the camera
Area outside the detection range of the camera
The system can assist the driver when parking and manoeuvring under the fol-
lowing basic conditions.
The ignition is switched on.
The reverse gear is engaged. 1)
The luggage compartment lid is completely closed.
The vehicle is travelling at less than 15 km/h.
The area behind the vehicle is clearly visible.
The selected parking / manoeuvring area is clear and even.
Note
■ The display can be interrupted by pressing the symbol button » Fig. 130 on
page 105 .■
After disengaging the reverse gear, automatic display of the parking aid is
carried out (variant 2, 3) » page 103.
Guidelines and function interfaces
Fig. 133
Infotainment Display: Orientation lines / functional surfaces
Read and observe
and on page 106 first.
Orientation lines are shown along with the monitored area behind the vehicle
in the display.
AB1)
The area behind the vehicle can be displayed for a few seconds more after disengaging the reverse gear.
106Driving
NoteBy pressing the button D during the control this is cancelled and the CCS is
activated.
Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the following subjects:
Operation
110
Automatic stop-start
111
Operation overview
111
Start control
112
Stop/resume control
112
Set/change the desired speed
112
Set the clearance level
113
Special driving conditions
113
Overtaking and towing
114
Malfunctions
114
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 100.
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 100, 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 into “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.
Operation
Fig. 140
Display of the instrument cluster: Examples of ACC displays
110Driving
Fig. 141
Display of the instrument cluster: Examples of ACC status dis-
plays
Read and observe
on page 110 first.
The ACC allows a speed of 30-160 km/h to be set or a distance to the preced-
ing vehicle to be very short of very long to be set.
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. 120 m ahead using the radar
sensor.
ACC display » Fig. 140
Vehicle detected (control active)
Line showing the displacement of the distance when setting » page 113,
Set the clearance level
Set distance to the vehicle ahead
Vehicle detected (control deactivated)
ACC status displays » Fig. 141
Control deactivated.
Control activated - no vehicle detected.
Regulation deactivated - no speed stored.
Control activated (vehicle detected).
Note to reduce speed
If the delay of the ACC is insufficient in relation to the vehicle in front, the
warning light lights up in the instrument cluster and the display shows a
message to engage the brake pedal.
1234NoteSome ACC notifications in the display of the instrument cluster may be hidden
by notifications for other functions. An ACC notification automatically appears
for a brief moment when there is a change in status of the ACC.
Automatic stop-start
Read and observe
on page 110 first.
Vehicles with an automatic transmission can decelerate to a complete stop
and start moving again using the ACC.
Decelerate to a complete stop
If a vehicle ahead decelerates to a standstill, the ACC will also decelerate your
vehicle to a complete stop.
Starting to drive again after a holding period
As soon as the vehicle ahead starts moving again after a holding period, your
vehicle will also move and the speed will continue to be controlled. Control is
automatically disconnected in case of longer holding periods.
Operation overview
Fig. 142
Operating lever
Read and observe
on page 110 first.
Overview of ACC functions operated with the lever » Fig. 1421Activate ACC (control deactivated)2Start control (resume) / increase speed by 1 km/h at a time
(sprung position)3Interrupt control (sprung position) 111Assist systems
Overtaking and towingRead and observe
on page 110 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. 142 on page 111 .
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 110 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 is dirty or covered, a message indicating that there is no sensor
view appears. Clean the sensor cover or remove the obstacles » Fig. 125 on
page 100 .
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:
Operation
114
Distance warning
115
Warning and automatic braking
115
Deactivation/activation
116
Malfunctions
116
The Front Assist (hereinafter referred to as "system") warns you of the danger
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 100.
WARNING■
The general information relating to the use of assistance systems must
be observed » page 100, 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 114 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.
▶ 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.
TCS is activated » page 102.
The vehicle is travelling forwards at a speed of more than approx. 5 km/h.
114Driving
Deactivation/activationFig. 147
Buttons / Dial: on the operating lever / the multifunction steer-
ing wheel
Read and observe
and on page 114 first.
The function is automatically activated each time the ignition is switched on.
The system should only be disabled in exceptional cases »
.
On vehicles with the MAXI DOT display, the system can be activated/deactiva- ted in the main menu » page 41, Menu item
assist systems
.
Deactivation / activation in vehicles with segment display
Button
» Fig. 14 7ActionOperation
AHold up / downShow Front Assist menu itemBPressDeactivate/activate system
Deactivation / activation in vehicles with multi-function steering wheel
Button /dial
» Fig. 14 7
ActionOperation
CPressShow Front Assist menu itemDPressDeactivate/activate system
Disable / enable and setting in the Infotainment
In Infotainment, the entire system or the functions warning and distance
warning can be deactivated/activated » Owner's Manual Infotainment .
If the distance-warning function was deactivated before switching off the igni-
tion, it remains deactivated after switching on the ignition.WARNINGIn the following situations, Front Assist should be switched off for safety
reasons.■
When the vehicle is being towed away.
■
When the vehicle is on a rolling test bench.
■
If an unfounded warning or a system action was taken.
■
When on a truck, or a car ferry service or similar.
Malfunctions
Read and observe
and on page 114 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 sensor is dirty or covered, a message indicating that there is no sensor
view appears. Clean the sensor cover or remove the obstacles » Fig. 125 on
page 100 .
System unavailable
If the system is currently unavailable, a message concerning the unavailability
appears. Stop the vehicle, switch off the engine and then start it again. If the
system still is not available, seek the assistance of a specialist garage.
Fatigue detection
The fatigue detection system (hereinafter referred to as "system") recom-
mends the driver takes a break from driving when driver fatigue can be detec-
ted due to the driver's steering behaviour.
From the starting of the journey, the system evaluates the steering behaviour
at speeds 65-200 km/h. If, while driving, there have been changes in the steer-
ing behaviours that are evaluated by the system as indicating possible fatigue,
a break recommendation is issued.
Conditions under which a break from driving is detected by the system ▶ The vehicle is stopped and the ignition switched off.
▶ The vehicle is stopped, the seat belt removed and the driver's door opened.
▶ The vehicle is stopped for more than 15 minutes.
116Driving