Operation descriptionFig. 125
Cruise control system controls
Read and observe on page 103 first.
Overview of the CCS controls » Fig. 125AActivate CCS (control deactivated) Interrupt control (sprung position) Deactivate CCS (delete set speed)BTake control again a)
/ Increase speedCStart control / reduce speedDSwitching between CCS and speed limitera)
If no speed is set the current speed is adopted.
Once the controls are activated, the CCS maintains the vehicle at the set
speed; the warning light lights up in the instrument cluster.
Controls are automatically interrupted if any of the following occur.
▶ The brake pedal is operated.
▶ When one of the brake assist systems (e.g. ESC) intervenes.
▶ Through an airbag deployment.
▶ By pressing the
D
button.
WARNING■ Always deactivate the cruise control system after use to prevent the sys-
tem being switched on unintentionally.■
Control may only be resumed if the set speed is not too high for the cur-
rent traffic conditions.
Note■ During control, speed can be increased by pressing the accelerator pedal. Re-
leasing the accelerator pedal will cause the speed to drop again to the set
speed.■
By pressing the
D
button during the regulation, this is cancelled and the
speed limiter is activated.
Speed limiter
Introduction
This chapter contains information on the following subjects:
Operation
104
Description of operation
105
The speed limiter limits the maximum driving speed to the set speed limit.
This limit can only be exceeded by depressing the accelerator pedal fully.
The condition in which the Speed Limiter monitors a potential set speed limit
excess is referred to as regulation.
WARNINGThe general information relating to the use of assistance systems must be
observed » page 96, in section Introduction .
Operation
Fig. 126
MAXI DOT display: Examples of speed limiter status displays
104Driving
Fig. 127
Segment display: Examples of speed limiter status displays
Read and observe
on page 104 first.
Status displays of the speed limiter » Fig. 126, » Fig. 127
Speed limit set, but regulation is inactive.
Control is active.
No speed limit set.
System fault - seek assistance from a specialist garage immediately.
Basic requirements for start of control The speed limiter is activated.
The current speed is higher than 30 km/h.
Description of operation
Fig. 128
Operating elements of the speed
limiter
Read and observe on page 104 first.
Overview of the control elements of the speed limiter » Fig. 128AActivate CCS (required condition for the subsequent activation of
the speed limiter) To activate the speed limiter, set the switch to position , then
press D
to operate. Interrupt control (sprung position) Disable speed limiter (set limit delete)BTake control again a)
/ increase speed - press (in increments of 1
km/h), hold (in increments of 10 km/h)CStart regulation / reduce speed - press (in increments of 1 km/h),
hold (in increments of 10 km/h)DSwitching between CCS and speed limitera)
If no speed limit is set, the current speed is set as the speed limit.
After starting the system, the current speed is set as the speed limit, the
warning light lights up in the instrument cluster.
Exceeding the speed limit during the regulation
If, during the control, it is necessary to exceed the speed limit (e.g. to over-
take), the accelerator pedal must be pressed fully.
When exceeding the speed limit (e.g. driving down a hill), an acoustic signal
sounds and the warning light flashes in the instrument cluster.
The regulation is resumed once the speed has fallen below the set limit.
Note
By pressing the button D during the regulation, this is cancelled and the CCS
is activated.
Front Assist
Introduction
This chapter contains information on the following subjects:
Radar sensor
106
Operation
106
Distance warning
107
Warning and automatic braking
107
Deactivation/activation
108
Malfunctions
108
105Assist systems
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 » Fig. 129 on
page 106 .WARNING■
The general information relating to the use of assistance systems must
be observed » page 96, 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.
Radar sensor
Fig. 129
Installation location of the radar
sensor
Read and observe and on page 106 first.
The radar sensor » Fig. 129(hereinafter referred to as the sensor) may detect
objects by emitting and receiving electromagnetic waves.
The sensor function may be impaired in the events of one of the following. ▶ The sensor cover is soiled (e.g. with mud, snow and the like).
▶ The area in front of and around the sensor cover is obscured (e.g. by labels,
auxiliary headlights and the like).
▶ 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 108, Malfunctions .
WARNING■
If you suspect that the sensor is damaged, deactivate the system. Have
the sensor checked by a specialist garage.■
A collision or damage in the front or lower area of the vehicle could affect
the sensor function - there is risk of accident! Have the sensor checked by
a specialist garage.
■
Do not cover the area in front of and around the sensor cover. This can
lead to impaired function of the sensor - risk of accidents!
CAUTION
Remove the snow with a brush and the ice with a solvent-free de-icer.
Operation
Read and observe
and on page 106 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 97.
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 97.106Driving
Distance warningFig. 130
Instrument cluster display: Distance warning
Read and observe and on page 106 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
» Fig. 130 appears in the display.
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. 131
Instrument cluster display: Warning or emergency
braking at low speed
Read and observe and on page 106 first.
Emergency braking at low speed
If there is a risk of 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
» Fig. 131 appears in the display.
Advance warning
If the system detects a risk of collision, the warning light » Fig. 131 appears
in the display and you will hear an acoustic signal.
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 the acute warning, the system begins to au-
tomatically 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 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.107Assist systems
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/deactivated in Infotainment » Owner´s Manual -
Infotainment .
Pause recommendation
The icon appears and the following message for a few seconds in the display
of the instrument cluster and a message about the detected fatigue. An au-
dible signal is also emitted.WARNING■ The general information relating to the use of assistance systems must
be observed » page 96, 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.
Tyre pressure monitoring
Introduction
This chapter contains information on the following subjects:
Storing the tyre pressure values
109
Storing the tyre pressure values and Infotainment display
110
Storing the tyre pressure values by means of the button
110
The tyre pressure monitoring function (hereinafter referred to as the system)
monitors the tyre pressure while driving.
If the tyre inflation pressure changes, the warning light
lights up in the in-
strument cluster and an audible signal is heard » page 33,
Tyre pressure .
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 96, in section Introduction .■
Having the correct tyre inflation pressure is always the driver's responsi-
bility. Tyre pressure should be checked regularly » page 137.
■
The system cannot warn in case of very rapid tyre inflation pressure loss,
e.g. in case of sudden tyre damage.
Storing the tyre pressure values
Read and observe
on page 109 first.
The tyre pressure values are always stored in the system, if one of the fol-
lowing 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 137. 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.109Assist systems
Storing the tyre pressure values and Infotainment displayFig. 133
Button for storing the pressure
values / display example: the
system indicates a front right
tyre pressure change
Read and observe on page 109 first.
›
Inflate all the tyres to the specified pressure.
›
Turn on the ignition and switch on Infotainment.
›
Press the button in Infotainment and then tap on the
Tap
→
Vehiclestatus
.
›
Use the function surfaces
Select the menu item
Tyre Pressure Loss Indi-
cator .
›
Tap on the function
Tap on
» Fig. 133 .
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. 133.
Storing the tyre pressure values by means of the button
Fig. 134
Key for storing the pressure val-
ues
Read and observe on page 109 first.›
Inflate all the tyres to the specified pressure.
›
Switch on the ignition.
›
Press the symbol key
» Fig. 134 on the button.
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
.
110Driving
Exterior mirrors
You should have additional exterior mirrors fitted if you are not able to see the
traffic behind the trailer using the standard rear-view mirrors.
Headlights
The front of the vehicle may lift up when a trailer (accessory) is being towed
and the headlights may dazzle other road users. Set the range of the head-
lights » page 54 .
Power supply of the trailer / accessory power system
In the electrical connection between the vehicle and trailer (accessory), the
trailer (accessories) is supplied with power from the vehicle (with ignition
switched on and off).
With the engine switched off, the vehicle battery is discharged by the connec-
ted consumers.
At low charge state of the vehicle battery, the power supply to the trailer (ac-
cessories) is interrupted.WARNING■ An improperly connected electrical installation of the trailer (accessories)
may result in an accident or serious injury from electrical shock.■
Do not make any adjustments to the electrical installation of the vehicle
and the trailer (accessories) - risk of an accident or serious injury from elec-
trical shock.
WARNING (Continued)■ After the electrical connection between the vehicle and trailer (accessory)
the trailer / accessory lights should be checked for function.■
Never use the securing eye to tow - risk of accident!
CAUTION
■ An improperly connected electrical installation of the trailer (accessories) can
lead to the inoperability of the vehicle electronics.■
The total power consumption of all the connected consumers to the trailer
power supply must not exceed 350 watts, otherwise there is a risk of damage
to the electrical system of the vehicle.
Loading a trailer
Correct the tyre inflation pressure on the vehicle for “full load” » page 137.
Distribution of the cargo
Distribute the cargo in the trailer in such a way that heavy items are located as
close to the trailer axle as possible. Secure the load from slipping.
The distribution of the weight is very poor if your vehicle is unladen and the
trailer is laden. Nevertheless, maintain a particularly low speed if you cannot
avoid driving with this combination.
WARNINGA sliding cargo can significantly adversely affect stability and driving safety
- there is a risk of accident!
Trailer load
The permissible trailer load must not be exceeded under any circumstances.Permissible trailer loadEngineGearboxPermissible trailer load, braked (kg)Permissible trailer load, unbraked (kg)Gradients of up to 12 %Gradients of up to 8% a)1.2 l/66 kW TSIMG9001000580DSG90010005901.2 ltr./81 kW TSIMG110012005901.4 ltr./92 kW TSIDSG12001200600DSG (Green tec)12001200610
116Driving
EngineGearboxPermissible trailer load, braked (kg)Permissible trailer load, unbraked (kg)Gradients of up to 12 %Gradients of up to 8%a)1.6 l./81 kW MPIMG10001100580AG100011006001.4 l/66 kW TDI CRMG10001100610DSG100011006201.6 l/85 kW TDI CRMG12001200630a)
Only valid for some countries.
WARNINGThe maximum vertical load and the maximum trailer load must not be ex-
ceeded - there is risk of accident!
Towing a trailer
Driving speed
For safety reasons, do not drive with the trailer any faster than 100 km/h
(when the towing vehicle is a passenger car of category M1) or 80 km/h (when
the towing vehicle is a truck of category N1).
Immediately reduce your speed as soon as even the slightest swaying of the
trailer is detected. Never attempt to stop the trailer from “swaying” by acceler-
ating.
Brakes
Apply the brakes in good time! If the trailer is fitted with a trailer brake, apply
the brakes gently at first, then brake firmly. This will avoid brake jolts resulting
from the trailer wheels locking.
On downhill sections shift down a gear in good time to also use the engine as
a brake.
WARNINGAlways drive particularly carefully with the trailer.
CAUTION
With frequent towing, the vehicle is excessively loaded so this must also be
checked between service intervals.Anti-theft alarm system
The alarm is triggered if, with a vehicle with activated anti-theft alarm (herein-
after only warning system), the electrical connection to the trailer (accessory)
is interrupted.
Always switch off the anti-theft alarm system before a trailer (accessory) is
coupled or uncoupled » page 49.
Conditions for including a trailer (accessory) in the anti-theft alarm system. The vehicle is factory-fitted with an anti-theft alarm system and a towing
device.
The trailer (accessory) is electrically connected to the towing vehicle by
means of the trailer socket.
The electrical system of the vehicle and trailer (accessory) is functional.
The vehicle is locked and the anti-theft alarm system is activated.
The trailer (accessory) is not equipped with LED taillights.117Towing device and trailer