Leaving a parallel parking spaceRead and observe
and on page 234 first.
The system supports the driver when leaving a parking space of a parallel
parking space.
Leaving a parking space process
›
Press the
» Fig. 289 on page 234 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 234 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 234 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.
Trailer manoeuvring assistant (Trailer Assist)
Introduction
This chapter contains information on the following subjects:
Operating principle
238
Activation / deactivation
238
Manoeuvring trailer
239
Automatic brake intervention
239
The trailer manoeuvring assistant (below only system) helps the driver when
reversing with a trailer.
When manoeuvring, the system only undertakes the steering movement. The
driver operates the brake, accelerator or clutch pedal and the shift / selector
lever.
The state in which the steering wheel is operated by the system, is referred to
as parking operation.
WARNING■
The general information relating to the use of assistance systems must
be observed » page 215, in section Introduction .■
The system is not oriented to the area around the vehicle, there is no ob-
stacle detection.
237Assist systems
WARNING (Continued)■During manoeuvring, always observe the movement of the trailer and if
neccesary cancel the manoeuvring autonomously to prevent accidents or
damage to the vehicle and the trailer.■
During the parking process, the system automatically performs rapid
steering movements. While it is doing so, do not place your hands between
the steering wheel – risk of injury!
■
During parking manoeuvres on loose or slippery surfaces (gravel, snow,
ice, etc.) it is possible to stray from the calculated road. Therefore, use the
system with extreme caution in such situations.
CAUTION
■ The trailer position is evaluated by the rear camera based on the bending an-
gle of the drawbar and the steering movement carried out by the system. For
this reason, the drawbar must not be obstructed by external influences.■
The rear camera lens must not be contaminated, otherwise the system may
be unavailable or the system function my be significantly impaired.
Note
■ We recommend performing the parking at a safe speed of up to about 5
km/h.■
The parking process can be terminated at any time by pressing the button
» Fig. 294 on page 238 or by a steering intervention.
■
The correct system function can only be ensured if a one- or two-axle trailer
is hitched without steered axle.
Operating principle
Fig. 294
System button
Read and observe and on page 237 first.
The trailer position is detected by the system based on the information of the
rear camera. Trailer is steered in the direction set by the driver using steering
wheel movements.
Conditions for the system function The engine is running.
The system is activated.
The parking aid is activated.
The driver's door and the boot lid are fully closed.
The trailer is plugged into the trailer socket.
The trailer is not veering too much.
Determining the drawbar length
The system must know the drawbar length in order that the driver is offered
the maximum possible setting angle with respect to the target position of the
trailer.
The system needs some turning manoeuvres or cornering with a hitched trailer
in order to determine the drawbar length.
The manoeuvring dimensions are shown in the display
5
» Fig. 295 on
page 239 .
Activation / deactivation
Read and observe
and on page 237 first.
The system is activated by engaging reverse gear and pressing
the button
» Fig. 294 on page 238 .
When the system is activated, the symbol lights up in the button.
The system is deactivated by pressing the button
(the symbol
in the but-
ton is no longer illuminated).
238Driving
Operation description - Variant with ACCFig. 303
Controls the speed limiter (version with ACC)
Read and observe
on page 241 first.
Overview of the control elements of the speed limiter » Fig. 3031Activate ACC (required condition for the subsequent activation
of the speed limiter) To activate the speed limiter , set the lever to position , then
press B
to operate.
2Resume control a)
/ increase speed limit by 1 km/h at a time
(sprung position)3Interrupt control (spring-tensioned position)4Disable speed Limiter (delete set limit )5 Increase speed limit by 10 km/h at a time6 Decrease speed limit by 10 km/h at a timeAStart control / reduce speed limit in increments of 1 km/hBSwitching between ACC and speed limitera)
If no speed limit is set, the current speed is set as the speed limit.
Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
244
Operation
244Automatic stopping and starting245Operation overview245
Start control
246
Stop/resume control
246
Set/change desired speed
246
Set the clearance level
246
Special driving conditions
247
Overtaking and towing
247
Malfunctions
248
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 215.
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 215, 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.
243Assist systems
WARNING (Continued)■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 243 first.
›
Press the button, then tap on the function surface
→
Driver assistance
.
■ ACC (adaptive cruise control) - Setting for the adaptive cruise control
■
Driving programme:
- Set the vehicle acceleration when adaptive cruise control
is activated 1)
■
Last selected distance
- Last selected distance level on/off
■
Distance:
- Set the distance monitoring to the vehicles ahead
OperationFig. 304
Instrument cluster display: Examples of ACC displays
Fig. 305
Instrument cluster display: Examples of ACC status displays
Read and observe
on page 243 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.
1)
This can be set as follows on vehicles with a travel mode option
» page 251.
244Driving
Start controlRead and observe
on page 243 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. 306 on page 245 the button.
›
or: Set the lever to the sprung position
» Fig. 306 on page 245 .
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 carries out the
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 243 first.
Stop control
›
Set the lever into the sprung position
» Fig. 306 on page 245 .
›
or: apply the brake pedal.
Control stops, the speed remains stored.
Resume control
›
Start control » page 246, Start control .
Note
Control is also stopped when the clutch pedal is held down for longer than 30
s or the TCS is deactivated.Set/change desired speed
Read and observe
on page 243 first.
The desired speed can be set or changed using the control lever » Fig. 306 on
page 245 .
Setting/changing the speed by increments of 10 km/h at a time (
) - re-
quirements
The ACC is activated.
Increasing/reducing the speed by increments of 1 km/h at a time (
/
-
requirements
The ACC is activated.
Vehicle control takes place.
Changing the speed by adopting the current speed ( ) - requirements
The ACC is activated.
The vehicle is moving at a speed other than that which is stored.
Note
■
If during control the speed is increased by pressing the accelerator, control is
temporarily stopped. Upon releasing the accelerator, control is automatically
resumed.■
If during control the speed is reduced by applying the brake, control is stop-
ped. Control needs to be restarted in order to resume » page 246.
■
If the vehicle is controlled by a lower speed than the stored speed, then
the current speed is stored by pressing the button again
and the speed is
reduced in increments of 1 km/h.
Set the clearance level
Read and observe
on page 243 first.
The proximity to the vehicle ahead can be set with the lever » Fig. 306 on
page 245 or in Infotainment » page 244, Settings in Infotainment .
Setting by means of the lever
›
Set the switch to the spring-tensioned position
or
» Fig. 306 on
page 245 .
The display of the instrument cluster shows line
2
» Fig. 304 on page 244 ,
which indicates the proximity.
246Driving
›Using the switch
on the lever, adjust the line 2 to the desired dis-
tance.
Note
■ If the proximity is changed in infotainment, the change will only come into
effect after a subsequent activation of the ACC.■
The higher the speed, the greater the proximity to the vehicle ahead.
■
The adjustment of the distance is stored (depending on Infotainment type) in
the active user account personalisation » page 50.
Special driving conditions
Fig. 307
Cornering / narrow vehicles or vehicles travelling side by side
Fig. 308
Lane changes of other vehicles / stationary vehicles
Read and observe
on page 243 first.
The following (and similar) situations require special attention and possibly the
intervention of the driver (braking, accelerating etc.).
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. 307 -
. 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. 307 -
.
Other vehicles changing lanes
Vehicles that change onto the lane with a small distance » Fig. 308 -
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 vehicle,
» Fig. 308 -
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 243 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. 306 on page 245 .
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.
247Assist systems
MalfunctionsRead and observe
on page 243 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 215 .
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
248
Operation
248
Distance warning
249
Warning and automatic braking
249
Pedestrian recognition
250
Deactivation/activation
250
Malfunctions
251
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 215.WARNING■
Please take note of the general points relating to the use of assistance
systems » page 215, in section Introduction .■
The system does not respond vehicles that are crossing or oncoming.
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.
Settings in Infotainment
Read and observe
and on page 248 first.
›
Press the button, then tap on the function surface
→
Driver assistance
.
■ Front Assist (ambient traffic monitor. sys.) - Set the assistant for distance
monitoring to the vehicles ahead ■
Active
- Activate/deactivate the assistant
■
Advance warning
(Version 1) - Activate/deactivate advance warning
■
Advance warning
(Version 2) - Activating/deactivating and setting the distance
level at which a warning occurs
■
Display distance warning
- Activate/deactivate distance warnings
Operation
Read and observe
and on page 248 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 217.
The vehicle is travelling forwards at a speed of more than approx. 5 km/h.
248Driving
NoteThe system can be impaired or may not be available, for example when driving
in “sharp ”curves or with an ESC engagement » page 216.
Distance warning
Fig. 309
Display of the instrument cluster: distance warning
Read and observe and on page 248 first.
The display of the distance warning is for vehicles with MAXI DOT display.
If a safe distance from the vehicle ahead is fallen short of, the warning light
appears in the display
» Fig. 309 .
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. 310
Instrument cluster display: Warning or emergency
braking at low speed
Read and observe and on page 248 first.
Emergency braking at low speed
If there is a risk of a collision in a vehicle speed range of about 5 km/h to 45 km/h, the system triggers an automatic braking.
With automatic braking, the warning light appears in the display
» Fig. 310 .
Advance warning
If the system detects a risk of collision, the warning light appears on the dis-
play
» Fig. 310 and an audible signal is emitted.
The pre-warning display can occur in the following situations.
▶ If there is a risk of collision with a moving obstacle at a driving speed range
of approx. 30 km/h to approx. 210 km/h.
▶ If there is a risk of collision with a stationary obstacle at a driving speed
range of approx. 30 km/h to approx. 85 km/h.
With a warning the brake pedal must be pressed or the moving obstacle is to
be avoided!
Acute alert
If the driver does not react to the advance warning when in danger of a colli-
sion with a moving obstacle, the system briefly applies the brake automatically
via an active brake intervention to draw attention to the potential danger of a
collision again.
Automatic Braking
If the driver does not respond to acute warning, the system begins to auto-
matically brake the vehicle.
If an automatic brake intervention is triggered by the system, the pressure in
the brake system increases and the brake pedal cannot be operated with the
normal pedal stroke.
The automatic braking interventions can be cancelled by pressing the acceler-
ator pedal or by means of a steering intervention.
Brake assist
If the driver brakes inadequate with an impending collision, the system auto-
matically increases braking force.
The braking assistance only occurs as long as the brake pedal is being firmly
pressed down.
249Assist systems