Approximate range of sensors (in cm)Area » Fig. 244Variant 1
(4 sensors)Variant 2
(8 sensors)Variant 3
(12 sensors)A-120120B-6090C160160160D606090E--90
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 » page 205.
Towing a trailer
When towing, or when another accessory is connected to the trailer socket on-
ly the areas
A
and
B
» Fig. 244 are active in the system.
Note
■
If with Version 3 vehicles not all fields around the vehicle silhouette are ac-
tive after activation, the vehicle should be moved forwards or backwards.■
The signal tones for front obstacle recognition are factory-set to be higher
than for rear obstacle recognition.
Display Infotainment screen
Fig. 245
Screen display
Read and observe and on page 204 first.Function surfaces and warnings » Fig. 245ARoad 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. 245 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.
Activation / deactivation
Fig. 246
System key (option 2, 3)
Read and observe and on page 204 first.
Activation
The activation of the system is initiated when the reverse gear is engaged, and
with vehicles with the variant 2 and 3 , also by pressing the
» Fig. 246 but-
ton.
206Driving
ParkingFig. 251
Display
Read and observe
and on page 209 first.
The system supports the driver when reverse parking in the parking space
found in a number of traverse and parallel parked vehicles.
Display » Fig. 251
Parking space recognised with the information to drive on
Parking space recognised with the information to reverse
Note to drive into the parking space
Note to reverse to the parking space
Parking manoeuvre
The parking space found is shown in the display » Fig. 251 -
.
›
Continue driving forwards until
appears in the display.
›
Stop and ensure that the vehicle does not continue moving forward until the
parking procedure starts.
›
Select reverse gear or move the selector lever into position R.
›
As soon as the following message is shown in the display:
Steering int. active.Check area around veh.!
, let go of the steering wheel. The steering will be taken
over by the system.
›
Observe the direct vicinity of the vehicle and reverse carefully.
If necessary, the parking procedure can be continued with further steps.
›
If the arrow in the information display is flashing to the front , engage
1. gear or move the selector lever into the position D/S.
The display shows the icon (brake pedal).
›Depress the brake pedal and wait until the steering wheel automatically ro-
tates into the required position, the symbol goes out.›
Carefully drive forwards.
›
If the backwards arrow is flashing in the display -
, select reverse gear
again or move the selector lever into position R.
The display shows the
icon (brake pedal).
›
Depress the brake pedal and wait until the steering wheel automatically ro-
tates into the required position, the symbol
goes out.
›
Carefully move backwards.
You can repeat these steps several times in succession.
As soon as the parking procedure is complete, an audible signal sounds and the following message appears in the display.
Leaving a parallel parking space
Read and observe
and on page 209 first.
The system supports the driver when leaving a parking space of a parallel
parking space.
Leaving a parking space process
›
Press the
» Fig. 250 on page 210 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.
211Assist systems
Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
214
Operation
215
Automatic stopping and starting
215
Operation overview
216
Start control
216
Stop/resume control
216
Set/change desired speed
217
Set the clearance level
217
Special driving conditions
217
Overtaking and towing
218
Malfunctions
218
The automatic distance 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 199.
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 199, 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, railroad 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 214 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 distance selected
- Switch on/off of the last distance selected
■
Distance:
- Set the distance monitoring to the vehicles ahead
1)
This can be set as follows on vehicles with a travel mode option » page 221.
214Driving
OperationFig. 255
Display in the instrument cluster: Examples of ACC displays
Fig. 256
Instrument cluster display: Examples of ACC status displays
Read and observe
on page 214 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 displays » Fig. 255
Vehicle detected (control active)
Line showing the displacement of the distance when setting » page 217,
Set the clearance level
12Set distance to the vehicle ahead
Vehicle detected (control deactivated)
ACC status displays » Fig. 256
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).
Control 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.
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 214 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. Control is
automatically disconnected in case of longer holding periods.
34215Assist systems
Fig. 259
Lane changes of other vehicles / stationary vehicles
Read and observe
on page 214 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. 258 -
. 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. 258 -
.
Other vehicles changing lanes
Vehicles that change onto the lane with a small distance » Fig. 259 -
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. 259 -
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 214 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. 257 on page 216 .
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 214 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. 240 on
page 199 .
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.
218Driving
Front Assist
Introduction
This chapter contains information on the following subjects:
Settings in Infotainment
219
Operation
219
Distance warning
219
Warning and automatic braking
220
Deactivation/activation
220
Malfunctions
221
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 199.
WARNING■
The general information relating to the use of assistance systems must
be observed » page 199, 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.
Settings in Infotainment
Read and observe
and on page 219 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 219 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, automatic braking is per-
formed.
The system can work only if the following basic conditions are met. The system is activated.
TCS is activated » page 201.
The vehicle is travelling 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 200.
Distance warning
Fig. 260
Display in the instrument cluster: Proximity warning
Read and observe and on page 219 first.
If a safe distance from the vehicle ahead is fallen short of, the warning light
appears in the display
» Fig. 260 .
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.
219Assist systems
Warning and automatic brakingFig. 261
Display in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 219 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 30
km/h, the system triggers an automatic braking.
With automatic braking, the warning light appears in the display
» Fig. 261 .
Advance warning
If the system detects a risk of collision, the warning light appears on the dis-
play
» Fig. 261 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.
When the advance warning is issued, the brake pedal must be pressed or the
moving obstacle 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 Support
If the driver does not brake sufficiently in the event of an impending collision,
the system automatically increases the braking force.
The brake support only occurs as long as the brake pedal is being firmly press-
ed down.
Deactivation/activation
Read and observe
and on page 219 first.
The function is automatically activated each time the ignition is switched on.
The system should only be disabled in exceptional cases »
.
The system can be activated or deactivated in one of two ways. ▶ In the instrument cluster display » page 47, Menu item
Assist systems
.
▶ In infotainment » page 219, Settings in Infotainment .
The following functions can be activated or deactivated separately in infotain-
ment. ▶ Distance warning
▶ Advance warning
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 was issued or a system action carried out.
■
When on a truck, car ferry or similar.
220Driving
Mode selection and infotainment displayFig. 262
Button for selecting the driving mode: Version 1 / version 2
Fig. 263
Display in Infotainment screen
Read and observe on page 221 first.
Procedure for the selection of the driving mode
›
Press the buttonand
» Fig. 262 .
In the Infotainment screen, a running mode menu » Fig. 263 appears.
The mode is changed by repeatedly pressing the button and
or by tap-
ping the corresponding function surface on the Infotainment screen.
If a driving mode other than
Normal
is selected, then the symbol lights up on
the button or
.
If the mode
Sport
or
Individual
was set prior to the engine being switched off
(Drive - Sport), the drive changes to
Normal
mode after the engine is started. In
order to switch back to
Sport
, select mode
Sport
or
Individual
or set the selector
lever of the automatic transmission to mode S.
Function surfaces on the screen » Fig. 263
Sets the mode Individual
and information on the setting of the currently se-
lected mode
Cancel the menu to select driving mode
Modes (the surface of the selected mode is shown in green)
Note
■ The currently selected running mode is displayed in the Infotainment in the
status bar of the main menu of the symbol .■
If the driving mode menu is not operated within a few seconds, the Infotain-
ment switches to the last selected menu or switches off.
Individual mode
settings
Read and observe on page 221 first.
In the
Individual
mode, the following menu items can be set.
■
DCC:
- Adjustment of the shock characteristics
■
Steering:
- Set the power steering characteristics
■
Drive:
- set the drive characteristics
■
Front differential lock:
- Sets the characteristics of the front axle differential lock
■
ACC:
- Set the vehicle acceleration when adaptive cruise control is activated
■
Dynamic Cornering light:
- Set the characteristics of the Xenon headlights
■
Air conditioning:
- Set the Climatronic characteristics
■
Engine sound:
- Sets the engine noise in the vehicle
■
Reset mode
- Setting for all menu items in the
Individual
mode to
Normal
■
Cancel
- Keep the current settings
■
Reset
- cancels all menu items in the
Normal
mode
Proactive passenger protection (Crew Protect Assist)
Introduction
This chapter contains information on the following subjects:
Operation
224
Proactive passenger protection (hereafter known as system) increases pas-
senger protection in the front seats in situations that could lead to vehicle im-
pact or overturning.
ABC223Assist systems