WARNINGThe general information relating to the use of assistance systems must be
observed » page 212, in section Introduction .WARNING■
In the case of a collision or damage to the rear of the vehicle, the function
of the systems may be affected - risk of accident! Have the vehicle checked
by a specialist garage.■
Do not cover the sensor area - the function of the systems could be limi-
ted. ■ Remove snow, ice and such obstacles from the sensor environment im-
mediately.
WARNINGThe wizard for “blind spot”monitoring is limited by physical and system-re-
lated limits. Therefore, in the following situations the system can be de-
layed in drawing attention (or not at all) to a vehicle in the next land.■
When a vehicle is approaching at a very high speed.
■
When passing through a very sharp curve or a roundabout.
CAUTION
■ If a trailer or other accessory is to be connected to the trailer socket, then
the two systems are not available.■
In adverse weather conditions (heavy rain, water vapour, very low or high
temperatures, etc.), the system function may be limited - “failure to recognise
a vehicle”.
■
Accessories additionally installed on the vehicle rear, such as bicycle carriers,
can impair the system function.
Rear Traffic Alert- OperationFig. 272
Infotainment screen: Warning indicator / driving situation
Read and observe
and on page 219 first.
With the ignition switched on, the area next to and behind the vehicle is moni-
tored by the radar sensors of the system. If an approaching vehicle is detected
from the rear of the vehicle » Fig. 272, the system warns of this fact.
Warning - vehicles with parking aid
You will hear a continuous tone and one of the following warning levels
» Fig. 272 appears on the Infotainment screen.
An oncoming vehicle is detected. Do not continue driving backwards and
check around the vehicle.
A vehicle in the collision region is detected. Do not continue driving back-
wards .
Warning - vehicles without parking sensors
An acoustic signal is sounded and information for the driver to observe the
traffic behind is shown in the instrument cluster.
Automatic emergency braking
If the driver does not react to the warning and the system detects an impend-
ing collision, then this can trigger an automatic braking at a speed up to 10
km/h. A corresponding message is shown in the information cluster display.
AB219Assist systems
Wizard for “Blind Spot”Monitoring - OperationRead and observe
and on page 219 first.
At a speed over 15 km/h, the area alongside and behind the vehicle is moni-
tored by the system. At the same time, the distance and the difference in
speed between your vehicle and the other vehicles in the monitored area can
be measured.
When driving, the sensors monitor an area to the left and right to the extent of
a normal lane width.
If a vehicle is detected in the “blind spot” area, the system indicates this vehi-
cle by the indicator light in the exterior mirror.
System constraint
The system is unable to recognise the specific lane width by means of sensors.
Therefore this can e.g. in the following cases respond to a vehicle in a further
lane.
▶ When driving on a road with narrow lanes or on the lane edge.
▶ Driving around a bend.
The system may also respond to objects on the roadside such as crash barriers,
noise barriers or similar objects.
Wizard for “Blind Spot”Monitoring - driving situations and
warnings
Fig. 273
Driving situation / indicator light in the left outside mirror indi-
cates the driving situation
Fig. 274
Driving situation / indicator light in the right outside mirror indi-
cates the driving situation
Read and observe
and on page 219 first.
In the following situations, the indicator light in the outside mirror indicates avehicle in the “blind spot”.
▶ You vehicle
B
is being overtaken by vehicle
A
» Fig. 273 .
▶ Your vehicle
C
overtakes the vehicle
D
at a greater speed of max. 10
km » Fig. 274 . If the speed during the overtaking is even higher, then there is
no warning by the warning light.
The warning display is always in the exterior mirror on the side of the vehicle where a vehicle is detected in the “blind spot”.
The greater the speed difference between the two vehicles, the earlier the
warning (by means of the warning light) regarding the vehicle that is overtak-
ing you takes place.
Two warning levels
light up - a vehicle has been detected in the “blind spot”.
flash - a vehicle has been detected in the “blind spot” and the turn signal is
switched on .
An advanced warning for vehicles with Lane Assist
flash also if the steering wheel is turned in the direction of the vehicle in
the “blind spot” . Therefore the Lane Assist » page 243 must be enabled and
the boundary line between the vehicles detected.
If in this case your vehicle indicates crossing the boundary line, with a short vi-
bration of the steering wheel.
220Driving
Function surfacesFig. 277
Function surfaces
Read and observe and on page 221 first.
It is possible to adjust the parking and manoeuvring mode by means of the
function surfaces.
Function surfaces » Fig. 277
Turns off the display of the area behind the vehicle
Mode - traverse parking
Mode - parallel parking
Mode - driving up to a trailer / distance monitoring
Mode - monitor the area behind the vehicle (wide view)
Screen settings - brightness, contrast, colour
Parking aid (mini display)
Enabling/disabling the mini display
Switch to full screen display
Orientation lines and roadway
Fig. 278
Orientation and lane lines
ABCDEFGRead and observe and on page 221 first.
In the modes for transverse and parallel parking guidance, orientation lines for
the assessment of distance and lane lines are displayed on the screen.
Screen display » Fig. 278
The distance is about 40 cm (safety distance limit).
The distance is about 100 cm.
The distance is about 200 cm.
The lane lines terminate approximately 300 cm behind the vehicle.
The distance may vary slightly depending on the load of the vehicle and the
road inclination.
The distance between the side lines corresponds approximately to the vehicle
width including mirrors.
Lane
The lane lines
D
» Fig. 278 change depending on the steering angle and indi-
cate the roadway on which the vehicle would take with the current steering
wheel position.
CAUTION
The objects shown on the screen can be closer or even further away than they
appear. This is especially the case in the following situations.■
Protruding objects, such as the rear of a truck and the like.
■
When driving from a horizontal surface into a slope or a depression.
■
When driving from a slope or a depression onto a horizontal surface.
ABCD223Assist systems
Departing from a parallel parking spaceRead and observe
and on page 226 first.
The system supports the driver when leaving a parking space of a parallel
parking space.
Leaving a parking space process
›
Press the
» Fig. 282 on page 226 button.
The following message is displayed:
Park Assist: Set indicators and engage reverse gear!›
Activate the turn signal for side of the vehicle where the parking space is out
of which you wish to manoeuvre.
›
Select reverse gear or move the selector lever into position R.
The further procedure is analogous to that for reverse parking.
›
Follow the system instructions shown in the display.
As soon as the parking procedure is complete, an audible signal sounds and
the following message appears in the display.
If the parking space is too small, it is not possible to use the system to leave
the parking space. A corresponding message is shown in the information clus-
ter display.
Automatic brake assist
Read and observe
and on page 226 first.
Automatic brake assist when speeding
If a velocity of 7 km / h is exceeded during the parking manoeuvre for the first
time, the speed will be automatically reduced by the system to less than 7 km /
h. This prevents the parking manoeuvre from aborting.
Automatic emergency braking
If the system detects a risk of collision during parking, automatic emergency
braking takes place to prevent a collision.
The parking is terminated by the emergency braking.
CAUTION
The automatic emergency braking is not triggered by the system when the
parking process stops due to the speed of 7 km / hr being exceeded!Malfunctions
Read and observe
and on page 226 first.
If, for some unknown reason, the system is not available, an appropriate mes-
sage appears in the display of the instrument cluster.
System unavailable
If the system is not available because the vehicle has a fault, a message ap-
pears concerning the unavailability. Seek help from a specialist garage.
System fault
In the case of a system fault, an error message appears. Seek help from a spe-
cialist garage.
Cruise Control System
Introduction
This chapter contains information on the following subjects:
Operation
230
Operation description
230
The Cruise Control System (CCS) maintains a set speed without you having to
actuate the accelerator pedal. The state where the CCS maintains the speed is
referred to hereinafter as the control.
WARNING■
The general information relating to the use of assistance systems must
be observed » page 212, in section Introduction .■
After pressing the clutch pedal, no interrupted control occurs! For exam-
ple, if a different gear is engaged and the clutch pedal is released, control is
continued.
229Assist systems
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
OperationFig. 294
Instrument cluster display: Examples of ACC displays
Fig. 295
Instrument cluster display: Examples of ACC status displays
Read and observe
on page 233 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 displays » Fig. 294
Vehicle detected (control active)
Line showing the displacement of the distance when setting » page 236,
Set the clearance level
12Set distance to the vehicle ahead
Vehicle detected (control deactivated)
ACC status displays » Fig. 295
Regulation is inactive (in the colour display the digits of speed limits is
shown in grey).
Regulation active - no vehicle detected (in the colour display the digits of
the speed limits are highlighted).
Regulation deactivated - no speed stored.
Regulation active - vehicle detected (in the colour display the digits of the
speed limits are highlighted).
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.
Regulation according to the vehicle in the adjacent lane
During regulation your vehicle may be regulated according to the vehicle in the
adjacent lane.
This could occur at speeds above about 80 km/h when your vehicle is moving
faster than the vehicle in the adjacent lane on the driver's side. The display
shows the detected vehicle is in the adjacent lane.
Note
Some 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 stopping and starting
Read and observe
on page 233 first.
Vehicles with an automatic transmission can decelerate to a standstill and
start moving again using the ACC.
Decelerate to a standstill
If a vehicle ahead decelerates to a standstill, the ACC will also decelerate your
vehicle to a standstill.
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 regulated.
34234Driving
If the preceding vehicle starts moving again after a long break, then to contin-
ue the regulation press the accelerator pedal or lever to set the lever in
» page 235 position.
Operation overview
Fig. 296
Operating lever
Read and observe
on page 233 first.
Overview of ACC functions operated with the lever » Fig. 2961Activate ACC (regulation deactivated)2Start control (resume) / increase speed by 1 km/h at a time
(sprung position)3Interrupt control (sprung position)4Deactivate ACC5 Increase speed by 10 km/h at a time6 Decrease speed by 10 km/h at a timeA Set proximity levelBStart control / reduce speed in increments of 1 km/h
If the lever is set from the position
directly into the sprung position
the current speed is stored and the control process is started.
Start control
Read and observe
on page 233 first.
Basic requirements for start of control The ACC is activated.
On vehicles with manual transmission , the second gear or a higher gear is
selected and the current speed is greater than 25 km/h.
On vehicles with automatic transmission , the selector lever is in the D/S
position or in the Tiptronic position.
Start control
›
Press the button
» Fig. 296 on page 235 .
›
OrSet the lever into the sprung position
» Fig. 296 on page 235 .
The ACC takes the current driving speed and performs the control, the warning light illuminates in the instrument cluster.
If the control is started by moving the lever to the position and should
the speed be stored already, the ACC adopts this speed and executes control.
Note
If control is started at a speed of less than 30 km/h on vehicles with an auto-
matic transmission, the speed of 30 km/h is stored. The speed increases auto-
matically to 30 km/h or is regulated with respect to the speed of the vehicle
ahead.
Stop/resume control
Read and observe
on page 233 first.
Stop control
›
Set the lever into the sprung position
» Fig. 296 on page 235 .
›
Or apply the brake.
Control stops, the speed remains stored.
Resume control
›
Start control » page 235, Start control .
Note
Control is also stopped when the clutch pedal is held down for longer than 30
s or the TCS is deactivated.235Assist 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