Exceeding the speed limit during the regulation
If exceeding the speed limit is required during the regulation, for example
when overtaking, then the accelerator pedal is to be fully pressed.
When exceeding the speed limit, an acoustic signal sounds and the warning
light
in the instrument cluster flashes.
The regulation is resumed once the speed has fallen below the set limit.
CAUTION
When driving downhill, exceeding the set speed limit may occur. When exceed-
ing the limit, an acoustic signal sounds and the warning light in the instru-
ment cluster flashes.
Note
By pressing the button during the regulation this is cancelled and the GRA
is activated.
Front Assist
Introduction
This chapter contains information on the following subjects:
Radar sensor
122
Operation
123
Distance warning (dangerous distance)
123
Warning and automatic braking
123
Disable/enable
124
Information messages
125
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 » Fig. 144 on
page 122 .
WARNING■
The general information relating to the use of assistance systems must
be observed » page 114, in section Introduction .■
The system does not respond to crossing or oncoming objects.
CAUTIONIn case of failure of more than one brake light on the vehicle or on the electri-
cally connected trailer, the system becomes unavailable.
Radar sensor
Fig. 144
Mounting location of the radar
sensor
Read and observe and on page 122 first.
The radar sensor » Fig. 144(hereinafter referred to as "sensor") may detect ob-
jects by radiating and receiving electromagnetic waves.
The sensor function may be impaired in the events of one of the following. ▶ The sensor is soiled by mud, snow and the like.
▶ The area in front and around the sensor is obscured by labels, auxiliary lights
and similar.
▶ When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
If the sensor is dirty or covered, the corresponding message appears on the
display of the instrument cluster » page 125, Information messages .
WARNING■
If you suspect that the sensor is damaged, deactivate the system. Have
the sensor checked by a specialist garage.■
The sensor can become misaligned by collisions or by damage to the front
of the vehicle, the wheel arch or the underside of the vehicle. This can lead
to impaired function of the sensor - risk of accidents! Have the sensor
checked by a specialist garage.
■
The area in front and around the senor should not be obscured by labels,
auxiliary lights and similar. This can lead to impaired function of the sensor
- risk of accidents!
122Driving
CAUTIONRemove the snow with a brush and the ice with a solvent-free de-icer.
OperationRead and observe
and on page 122 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 115, 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 115.
Distance warning (dangerous distance)
Fig. 145
Symbols in the instrument cluster: Note (dangerous
proximity)
Read and observe and on page 122 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. 145 .
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. 146
Symbols in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 122 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. 146
in the display.
Advance warning
If the system detects a risk of collision, the symbol » Fig. 146
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!
123Assist systems
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.
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. 147
Buttons/dial: on the operating lever/the multifunction steering
wheel
Read and observe
and on page 122 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 in menu item Assist systems
» page 42 .
Deactivation / activation in vehicles with segment displayButton
» Fig. 14 7ActionOperation
APress 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. 14 7
ActionOperation
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 .
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.
124Driving
Information messagesRead and observe
and on page 122 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.
Stop the car, switch off the engine and clean the sensor or eliminate the dis-
turbance causing the lack of visibility » Fig. 144 on page 122 .
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
125
Information messages
125
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.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 114, in section Introduction .■
For the driving ability is always the driver's responsibility. Never drive if
you feel tired.
WARNING (Continued)■ 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 125 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 125 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
125Assist systems
An audible signal is also emitted.
Tyre pressure monitoring
Introduction
This chapter contains information on the following subjects:
Save tyre pressure values
126
Save tyre pressure values and infotainment display
126
Save tyre pressure values by pressing a button
127
The tyre pressure monitoring function (hereinafter known as "system") moni-
tors 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 indication of change in tyre pressure val-
ues » page 34 .
The system can only function properly if the tyres have the prescribed tyre
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 114, in section Introduction .■
The correct tyre pressure values is always the driver's responsibility. The
tyre pressure should be checked regularly » page 161.
■
The system cannot warn in case of very rapid loss of tyre pressure, e.g. in
the event of a sudden puncture.
Save tyre pressure values
Read and observe
on page 126 first.
The tyre pressure valuesare always stored in the system, if one of the follow-ing events is present. ▶ Change of tyre pressure values.
▶ 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 tyre pressures they must be inflated to the specified in-
flation pressure » page 161. If incorrect pressure values are storedthe sys-
tem may not warn even with a tyre pressure that is too low.
CAUTION
The tyre pressure values should be stored every 10 000 km or once a year to
ensure proper system function.
Save tyre pressure values and infotainment display
Fig. 148
Button for storing the pressure
values/example of the display:
the system suggests a change to
the front-left tyre pressure
Read and observe on page 126 first.
›
Inflate all of the tyres to the specified inflation 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 menu item Tyre Pressure Loss Indi-
cator .
›
Press the button
SET
» Fig. 148 .
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. 148.126Driving
Save tyre pressure values by pressing a buttonFig. 149
Button for storing the pressure
values
Read and observe on page 126 first.
›
Inflate all of the tyres to the specified inflation pressure.
›
Switch on the ignition.
›
Press the symbol key
» Fig. 149 and hold the symbol key.
The warning light in the instrument cluster illuminates.
An acoustic signal sounds and the warning light extinguishes informs that the
storage of the tyre pressure values has taken place.
›
Press the symbol key release.
Hitch and trailer
Hitch
Introduction
This chapter contains information on the following subjects:
Description
128
Adjusting the ready position
128
A correctly set ready position
129
Assembling the bar ball - Step 1
129
Assembling the bar ball - Step 2
130
Check proper fitting
130
Removing the bar ball - Step 1
131
Removing the bar ball - Step 2
131
Mount accessories
132
The maximum trailer drawbar 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 ball head is seated correctly and is secured in the mount-
ing recess before starting any journey.■
Do not use the ball head if it is not correctly inserted in the mounting re-
cess.
■
Do not use the towing equipment if it is damaged or incomplete.
■
Do not modify or adapt the towing equipment 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 tow bar - there is a risk of damaging the paint on the
bumper.■
When the ball rod is removed, always place the cover onto the mounting re-
cess - there is a danger of soiling the mounting recess.
127Hitch and trailer
The operating lever C automatically turns upwards in the direction of arrow4 and the release pin D pops out (both its red and green parts are visible)
» .
If the operating lever
C
does not turn automatically, or if the release pin
D
does not pop out, remove the tow bar from the mounting recess by turning the
operating lever
C
downwards as far as it can go. Clean the contact surfaces
on the tow bar and the mounting recess.
WARNING■ Carefully remove the cap for the mounting recess B - there is a risk of
hand injury.■
Keep your hands outside the operating lever's range of motion when at-
taching the ball head – there is a risk of finger injury.
■
Never attempt to pull the operating lever upwards forcibly to turn the
key. Doing so would mean the ball head is not attached correctly.
CAUTION
Remove the cover A from the rear bumper with care - there is a risk of paint
damage to the bumper and the cap.
Note
Store the caps A and B » Fig. 154 in a suitable place in the luggage compart-
ment after removal.
Assembling the bar ball - Step 2
Fig. 156
Secure the lock and remove key / place cap on lock
Read and observe
and on page 127 first.
›
To begin with, follow the first step for the ball rod assembly » page 129.
›Turn the key A in the direction of arrow 1 so that the green marking points
upwards » Fig. 156 .›
Remove the key in the direction of the arrow
2
.
›
Fit and press in the cap
B
on the hand-wheel lock in the direction of the ar-
row
3
» .
›
Check the ball head for secure mounting » page 130, Check proper fitting .
CAUTION
After removing the key, always replace the cover on the lock – risk of lock get-
ting dirty.
Check proper fitting
Fig. 157
Correctly secured ball head
Read and observe and on page 127 first.
Check that the ball head is fitted properly each time before use.
Correctly secured ball head » Fig. 157
The ball head does not come out of the mounting recess even after heavy
“shaking”.
Operating lever
A
is located as far up as possible.
The release pin
B
is completely exposed (both its red and green parts are
visible).
The key is removed.
The cap
B
is on the hand-wheel.
WARNINGDo not use the towing equipment unless the ball head has been properly
locked - risk of accident.130Driving
Removing the bar ball - Step 1Fig. 158
Remove the cap from the lock
Fig. 159
Insert the key into the lock / unlock the lock
Read and observe
and on page 127 first.
›
Remove the cover
A
from the lock in the direction of the arrow
1
» Fig. 158 .
›
Insert the key
B
into the lock in the direction of arrow
2
, so that its green
marker points upward » Fig. 159.
›
Turn the key in the direction of arrow
3
so that the red marking points up-
wards.
WARNINGNever remove the tow bar while the trailer is still coupled.
Note
We recommend that you put the protective cap on the ball before removing
the ball head.Removing the bar ball - Step 2Fig. 160
Release tow bar
Read and observe and on page 127 first.
Removing
›
To begin with, follow the first step of the ball bar end assembly » page 131.
›
Grasp the ball head from underneath » Fig. 160 .
›
Push in the release bolt
A
in the direction of arrow
1
until it stops and si-
multaneously press the operating lever
B
in the direction of arrow
2
until it
stops.
The ball head is released in this position and falls freely into the hand. If it
does not fall freely into the hand, use your other hand to push it upwards.
At the same time, the ball head latches into the ready position and is thus
ready to be built-in »
.
Subsequent steps
After removing the tow bar the following work must be carried out.
›
Insert the cover
B
» Fig. 154 on page 129 in the opposite direction to arrow
2
.
›
Fix the cap
A
» Fig. 154 on page 129 aligning it with “check mark” in the low-
er bumper area.
›
Push the cap in first on the left and right and then at the top.
WARNINGNever allow the ball head to remain unsecured in the boot. This could
cause damage on sudden braking and could put the safety of the occu-
pants at risk! 131Hitch and trailer