OperationRead and observe
and on page 116 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 110, Traction control (TCS) .
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 110.
Distance warning (dangerous distance)
Fig. 132
Symbols in the instrument cluster: Note (dangerous
proximity)
Read and observe and on page 116 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. 132 .
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. 133
Symbols in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 116 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.
With automatic braking the symbol appears » Fig. 133
in the display.
Advance warning
If the system detects a risk of collision, the symbol » Fig. 133
appears in the
display and you will hear an acoustic signal.
At the same time, the braking system is prepared for possible emergency brak- ing.
The pre-warning display can occur in the following situations.
▶ If there is a risk of collision with a moving obstacle in a driving speed range of
about 30 km/h to about 210 km/h.
▶ There is a risk of a collision with a stationary moving obstacle in a vehicle
speed range of approximately 30 km/h to about 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, the system briefly applies
the brake automatically via an active brake intervention to draw attention to
the potential danger of a collision again.
117Assist systems
Automatic Braking
If the driver fails to respond to the acute warning, the system starts to apply
the brakes automatically with increasing stopping power in several stages.
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.
Note
■ 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 accel-
erator pedal or by steering intervention.
Disable/enable
Fig. 134
Buttons/dial: on the control lever/on the multifunction steering
wheel
Read and observe
and on page 116 first.
The system 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 in menu item
Assist systems
» page 42 .
Deactivation / activation in vehicles with segment displayButton
» Fig. 134ActionOperationAPress and hold at the top or downShow Front Assist menu itemBPress brieflyConfirm entry (disable / enable)
Deactivation / activation in vehicles with multi-function steering wheel
Button /dial
» Fig. 134ActionOperation
CPress brieflyShow Front Assist menu itemDPress brieflyConfirm entry (disable / enable)
Disable / enable and setting in the Infotainment
In the Infotainment the entire system or the functions warning and distance warning can be disabled / enabled » Owner´s Manual Infotainment , chap-
ter CAR - Vehicle Settings .
f the distance-warning function was deactivated before the ignition was
switched off, it remains deactivated after the ignition is switched on again.
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.
Information messages
Read and observe
and on page 116 first.
The warning symbols are shown in the instrument cluster display.
Front Assist: no sensor view.FRONT ASSIST NO SENSOR VIEW
The sensor is soiled or covered.
118Driving
Stop the car, switch off the engine and clean the sensor or eliminate the dis-
turbance causing the lack of visibility » Fig. 131 on page 116 .
If after engine start the message persists, then the help of a professional or-
ganisation is required.Front Assist not available.FRONT ASSIST NOT AVAILABLE
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.
Fatigue detection
Introduction
This chapter contains information on the following subjects:
Function
119
Information messages
119
The fatigue detection system (hereinafter referred to as the system) recom-
mends the driver takes a break from driving when driver fatigue can be detec-
ted due to the driver's steering behaviour.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 109, in section Introduction .■
For the driving ability is always the driver's responsibility. Never drive if
you feel tired.
■
The system may not detect all cases where a break is needed.
■
Therefore, take regular, sufficient breaks during long trips.
■
There will be no system warning during the so-called micro-sleep.
Note
■ In some situations, the system may evaluate the driving incorrectly and thus
mistakenly recommend a break (e.g. sporty driving, adverse weather condi-
tions or poor road conditions).■
The system is designed primarily for use on motorways.
Function
Read and observe
on page 119 first.
From the start of the journey, the system evaluates steering behaviour. If,
while driving, there have been changes in the steering behaviours that are
evaluated by the system as indicating possible fatigue, a break recommenda-
tion is issued.
The system evaluates steering behaviour and recommends a break at speeds
of 65 - 200 km/h.
The system detects a break from driving when one of the following condi-
tions is met.
▶ 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.
If none of these conditions are met or if the driving style is not changed, the
system recommends a driving break again after 15 minutes.
The system can be activated or deactivated in the Infotainment » Owner´s
Manual Infotainment , chapter CAR - vehicle settings .
Information messages
Read and observe
on page 119 first.
The icon appears and the following message for a few seconds in the display
of the instrument cluster and the following message.
Driver alert.
Take a break!DRIVER ALERT TAKE A BREAK
An audible signal is also emitted.
Tyre pressure monitoring
Introduction
This chapter contains information on the following subjects:
Save tyre pressure values
120
Save tyre pressure values and infotainment display
120
Save tyre pressure values by pressing a button
121
119Assist systems
The tyre pressure monitoring function (hereinafter referred to as the system)
monitors the tyre pressure while driving.
When changing the tyre inflation pressure, the warning light illuminates
in
the instrument cluster and an audible signal is heard.
Information on the procedure for the notification of change of tyre inflation pressure » page 34 .
The system can only function properly if the tyres have the prescribed inflation
pressure and this pressure values are stored in the system.WARNING■ The general information relating to the use of assistance systems must
be observed » page 109, in section Introduction .■
Having the correct tyre inflation pressure is always the driver's responsi-
bility. Tyre pressure should be checked regularly » page 155.
■
The system cannot warn in case of very rapid tyre inflation pressure loss,
e.g. in case of sudden tyre damage.
Save tyre pressure values
Read and observe
on page 120 first.
The tyre pressure values are always stored in the system, if one of the follow-
ing events occurs.
▶ Change of tyre inflation pressure.
▶ Change one or more wheels.
▶ Change in position of a wheel on the vehicle.
▶ The warning light in the instrument cluster.
The storage of the tyre pressure values depends on equipment, either in the
infotainment or by pressing a button.
WARNINGBefore storing the pressures, the tyres must be inflated to the specified in-
flation pressure » page 155. When storing incorrect pressure values, the
system could possibly not issue any warnings, even with a too low tyre
pressure.
CAUTION
The tyre pressure values are to be saved every 10,000 km or once annually to
ensure correct system functioning.Save tyre pressure values and infotainment displayFig. 135
Button for storing the pressure
values/Example of the display:
the system indicates a tyre pres-
sure change in the front right
tyre
Read and observe on page 120 first.
›
Inflate all the tyres to the specified pressure.
›
Switch on the ignition.
›
The Infotainment switches on.
›
Press the button in the Infotainment and then in the display the function
keys one after the other ,
Vehicle status
.
›
By using the function keys
select the
Tyre Pressure Loss Indicator menu
item.
›
Press the function key
SET
» Fig. 135
.
In addition, follow the instructions that appear on the display.
A message in the display informs about the storage of the tyre pressure val-
ues.
Note
When a warning light in the instrument cluster appears, the affected tyre
can be displayed on the infotainment » Fig. 135.120Driving
Save tyre pressure values by pressing a buttonFig. 136
Key for storing the pressure val-
ues
Read and observe on page 120 first.
›
Inflate all the tyres to the specified pressure.
›
Switch on the ignition.
›
Press the symbol key
» Fig. 136 and hold it down.
The warning light in the instrument cluster illuminates.
An acoustic signal and the control indicator provide information about the
storage of the tyre pressure values.
›
Release the symbol key .
Hitch and trailer
Hitch
Introduction
This chapter contains information on the following subjects:
Description
122
Adjusting the ready position
122
A correctly set ready position
123
Assembling the tow bar – Step 1
123
Assembling the tow bar – Step 2
124
Check proper fitting
124
Removing the tow bar – Step 1
125
Removing the tow bar – Step 2
125
Mount accessories
126
The maximum trailer draw-bar load is 50 kg.
The draw bar load information on the type plate of the towing device is merely
a test value for the towing device. The vehicle-specific information is detailed
in the vehicle documents.
WARNING■ Check that the tow bar is seated correctly and is secured in the mounting
recess before the start of every journey.■
Do not use the ball head, if it is not correctly inserted into the mounting
recess and secured.
■
Do not use the towing equipment if it is damaged or incomplete.
■
Do not modify or adapt the towing device in any way.
■
Keep the mounting recess of the towing equipment clean at all times.
Such dirt prevents the ball head from being attached securely.
CAUTION
■ Take care with the ball bar - there is a risk of paint damage to the bumper.■When the tow bar is removed always place the cover onto the mounting re-
cess - there is a danger of soiling the mounting recess.
Note
■ Operation and maintenance of hitch » page 137.■Tow the vehicle by means of the detachable ball rod » page 171.121Hitch and trailer
The hand wheel C remains locked in this position.WARNINGIf the tow bar cannot be correctly placed in the ready position, then it must
not be used.
A correctly set ready position
Fig. 140
Ready position
Read and observe
and on page 121 first.
Correctly adjusted standby position » Fig. 140
The key
A
is in the unlocked position - the arrow on the key points to the
symbol
.
The locking ball
B
can be pushed fully into the tow bar.
The red marking
C
on the hand wheel points to the white marking on the
ball bar.
There is a clear gap of approx. 4 mm
D
between the hand wheel and the
tow bar.
The ball bar is thus set ready for installation.
CAUTION
When in the ready position, the key cannot be removed from the lock.Assembling the tow bar – Step 1Fig. 141
Remove cap for receiving shaft / use ball bar
Read and observe
and on page 121 first.
Preliminary work
Before installing the tow bar the following work must be carried out.
›
Remove the end cap for receiving shaft
A
in the direction of arrow
1
» Fig. 141 .
The tow bar must be set to the standby position » page 123, A correctly set
ready position . If this is not in the standby position, then it must be set to the
standby position » page 122, Adjusting the ready position .
Fitting
›
Grip the tow bar from underneath » Fig. 141 and insert into the mounting re-
cess in arrow direction
2
until you hear it click into place » .
The hand wheel
B
rotates back automatically and rests on the ball rod » .
WARNINGDo not hold the hand wheel with your hand when attaching the ball bar -
there is a risk of finger injury.
CAUTION
If the tow bar is not in the ready position, it cannot be fitted in the mounting
recess.
Note
Store the cover of the mounting recess in a suitable place in the luggage com-
partment store after removal.123Hitch and trailer
Assembling the tow bar – Step 2Fig. 142
Secure the lock and remove key / place cap on lock
Read and observe
and on page 121 first.
›
First perform step 1 of the tow bar assembly » page 123.
›
Turn the key
A
in the direction of arrow
1,
so that the arrow on the key
symbol
» Fig. 142 shows.
›
Remove the key in the direction of the arrow
2
.
›
Fit the cap
B
on the lock in the direction of the arrow
3
.
›
Check that the tow bar is securely attached » page 124.
WARNING■
After fitting the tow bar, always secure the lock and remove the key.■The tow bar must not be operated with the key inserted.
CAUTION
After removing the key, always replace the cover on the lock – there is a risk of
the lock getting dirty.Check proper fittingFig. 143
Correctly secured ball head
Read and observe and on page 121 first.
Check that the tow bar is fitted properly before each use.
Correctly secured tow bar » Fig. 143
The tow bar does not come out of the mounting recess even after heavy
“shaking”.
The green marking
A
on the hand wheel points to the white marking on
the tow bar.
The hand wheel lies flush with the tow bar - there is no gap.
The lock is locked and the key is removed.
The cap
B
is on the lock.
WARNINGDo not use the towing hitch unless the tow ball has been properly locked –
risk of accident.124Driving
Removing the tow bar – Step 1Fig. 144
Remove cap from the lock / insert key into the lock
Fig. 145
Unlock lock
Read and observe and on page 121 first.
›
Remove the cover
A
from the lock in the direction of the arrow
1
» Fig. 144 .
›
Insert the key into the lock
B
in the direction of arrow
2,
so that the arrow
on the key symbol shows.
›
Turn the key
B
in the direction of arrow
3,
so that the arrow on the key
symbol
» Fig. 145 shows.
WARNINGNever remove the tow bar while the trailer is still coupled.
Note
We recommend putting the protective cover onto the ball head before remov-
ing the tow bar.Removing the tow bar – Step 2Fig. 146
Release tow bar
Read and observe and on page 121 first.
Removing
›
To begin with, follow the first step for the ball rod assembly » page 125.
›
Grasp the ball bar from below » Fig. 146 .
›
Pull the hand wheel
A
in the direction of the arrow
1
.
›
Turn the hand wheel in the direction of the arrow
2
to the stop, and hold in
this position.
›
Remove the tow bar from the mounting recess downwards and in the direc-
tion of the arrow
3
.
At the same time, the ball head latches into the ready position and is thus
ready to be re-inserted into the mounting recess »
.
Subsequent steps
After removing the tow bar the following work must be carried out.
›
Fit the cover for the mounting recess
A
in the opposite direction to arrow
1
» Fig. 141 on page 123 .
WARNINGNever allow the tow bar to remain unsecured in the boot. This could cause
damage on sudden braking and could put the safety of the occupants at
risk! 125Hitch and trailer