daptive Cruise Control (ACC)
Press the button.
The speed limiter is switched off.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
Control is automatically interrupted.
Malfunction. Switch off the speed limiter and go to a qualified workshop.
For safety reasons, the speed limiter does not fully deactivate itself until you release the accelerator
once or switch the system off manually.
Adaptive Cruise Control (ACC)
Introduction
This chapter contains information on the followingsubjects:
Special driving situations
Limits of ACC
Switching ACC on and off
Setting ACC
Troubleshooting
The Adaptive Cruise Control (ACC) maintains a speed selected by the driver. If the vehicle
approaches a vehicle in front, the ACC automatically adapts the speed so that a distance you have
selected is maintained.
Speed range
ACC controls the vehicle in the speed range between 30 km/h (20 mph) and 160 km/h (100 mph)
or 210 km/h (130 mph). This speed range may differ in certain markets.
Driving with ACC
You can override the ACC at any time. Control will be interrupted when you brake. If you accelerate,
control will be interrupted for the duration of the acceleration process and will then continue again.
Control by ACC is less dynamic when towing a trailer
if the trailer's brake lights are faulty.
Does the vehicle have ACC?
The vehicle is equipped with ACC if you can make settings for ACC in the vehicle settings of the
Infotainment system Vehicle settings menu
Brake request
kes have overheated, control was interrupted automatically. Allow the brakes to cool down
and check functioning again.
If the problem persists, go to a qualified workshop.
Control cannot be started.
A forward gear other than first gear is selected (manual gearbox) or the selector lever is in selector
lever position D/S or the Tiptronic gate.
The speed is at least 25 km/h (16 mph) in the case of vehicles with manual gearbox.
The brake lights on the vehicle and trailer are working.
ESC is not regulating.
The brake pedal is not depressed.
Unusual noises during automatic braking.
This is normal and is not a fault.
Area monitoring system (Front Assist)
Introduction
This chapter contains information on the followingsubjects:
Warning levels and braking intervention
Limits of Front Assist
Pedestrian Monitoring
Operating the area monitoring system (Front Assist)
Troubleshooting
The area monitoring system (Front Assist) with City Emergency Braking System and Pedestrian
Monitoring can help to avoid accidents.
Within the limits of the system, Front Assist can warn the driver about imminent collisions, prepare
the vehicle for emergency braking, assist with braking, and initiate automatic braking. The warning
time varies depending on the traffic situation and driver behaviour.
Front Assist is not a substitute for the full concentration of the driver.
Driving with Front Assist
You can cancel the automatic braking interventions of Front Assist by steering or pressing the
accelerator.
Automatic braking
Front Assist can decelerate the vehicle to a standstill. The vehicle will then not be held permanently.
Depress the brake pedal.
Vehicles that are driving outside the sensor range in close proximity to your vehicle, e.g. vehicles
that are driving offset to your vehicle or motorbikes.
Vehicles that change into your lane directly in front of your vehicle.
Vehicles with bodies or attachments that project beyond the vehicle.
Oncoming vehicles or vehicles crossing your path.
Pedestrians who are stationary, moving towards the vehicle or moving in the same direction as the
vehicle.
Function limitations
In tight bends.
Driving in heavy rain, snow or heavy spray.
Driving in multi-storey car parks.
Driving on roads with embedded metal objects, e.g. railway tracks.
Reversing.
If TCS is switched off manually.
If ESC is taking corrective action.
If the radar sensor is dirty or covered.
If there is a fault in several brake lights on the vehicle or on a trailer with an electrical connection to
the vehicle
If the vehicle accelerates hard or the accelerator is fully depressed.
In complex driving situations, e.g. at traffic islands.
In unclear traffic situations, e.g. vehicles ahead are braking heavily or turning off.
If there is a fault in Front Assist.
Switching off Front Assist
If the vehicle is used in a capacity other than driving in normal traffic, e.g. offroad.
If the vehicle is being towed or is loaded onto another vehicle.
If the radar sensor is covered temporarily by add-on parts, e.g. auxiliary headlights.
If the radar sensor is faulty.
After external force on the radar sensor, e.g. after a frontal collision.
In the event of multiple unwanted interventions.
When switched on, the Blind Spot Monitor is active from a speed of approx. 15 km/h (9 mph).
In the following driving situations, the yellow indicator lamp will light up in the corresponding
exterior mirror: Fig. 124
If your vehicle is being overtaken.
When overtaking another vehicle with a speed difference of up to approximately 10 km/h (6 mph).
No display will be shown if the takeover manoeuvre is much faster.
If a vehicle is detected in the blind spot and the turn signal is additionally activated in the direction
of the detected vehicle
In vehicles with the lane keeping system, the yellow indicator lamp will flash even if you do not
activate the turn signal when leaving your lane, provided that the lane keeping system is switched on
(Blind Spot Monitor Plus). The driver is warned by a corrective steering intervention when changing
lanes during a possible critical situation (information level, warning level). This also occurs when the
turn signal is activated for the corresponding direction. If the steering intervention is overridden by
the driver, the steering wheel vibrates to give an additional warning.
The quicker another vehicle approaches, the earlier there is a corresponding display in the exterior
mirror.
Automatic deactivation
The radar sensors for the Blind Spot Monitor will switch off automatically if, for example, the system
detects that a radar sensor is continuously covered. This can be caused by a layer of ice or snow in
front of the radar sensor, for example.
A text message will be shown on the instrument cluster display.
If the Blind Spot Monitor has been automatically deactivated, the system cannot be activated until
the ignition has been switched off and back on again.
The Blind Spot Monitor is automatically deactivated and cannot be activated when the factory-fitted
towing bracket is electrically connected to a trailer or similar Trailer towing
electrically connected to the vehicle and the driver pulls away, a text message appears in the
instrument cluster display to inform the driver that the Blind Spot Monitor has been deactivated.
The Blind Spot Monitor will be automatically activated again when the trailer has been unhitched
from the vehicle. This applies if the function was previously activated. The Blind Spot Monitor must
be deactivated manually if you tow a trailer using a towing bracket that was not fitted at the factory.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
Blind Spot Monitor is not working
The indicator lamp lights up yellow.
Go to a qualified workshop.
-lying vehicle components such as the bumper, spoiler and parts of the running gear, engine or
exhaust system could be damaged. Drive carefully through dips in the road and over drive entrances,
ramps, kerbstones and other objects.
Please adhere to relevant legislation when stopping and parking your vehicle.
Electronic parking brake
Operating the electronic parking brake
Fig. 125 In centre console: button for the electronic parking brake.
Switching on
When the vehicle is stationary, pull and hold the button.
If the indicator lamp in the button Fig. 125and the red indicator lamp in the instrument
cluster light up, the electronic parking brake is switched on.
Release the button.
Switching off
Switch on the ignition.
The indicator lamp in the button Fig. 125and the red indicator lamp in the instrument
cluster display will go out.
Moving off on steep uphill gradients or with increased vehicle weight
You can prevent the electronic parking brake from switching off automatically by pulling the
button upwards and holding it while pulling away.
If higher engine power is required to move off, the electronic parking brake will be deactivated only
when you release the button.
This can make it easier to move off with a high trailer weight Trailer towing
Emergency braking function
Fig. 128 Display in the Infotainment system: full-screen mode. The scanned areas depend on the
vehicle equipment level.
First read and observe the introductoryinformation and safety warnings
When the vehicle approaches an obstacle, this is shown in the Infotainment system in several
segments and is supported by an acoustic signal Fig. 128
can vary depending on the situation.
Obstacle close to the vehicle. A continuous tone sounds. Do not drive on!Obstacle in the
vehicle path. An intermittent tone sounds. The shorter the distance, the shorter the intervals.
Obstacle outside the vehicle path.Mute signal tones.Switch manoeuvre braking on and
off (depending on vehicle equipment).Switch to rear view camera system (depending on vehicle
equipment).System fault in the scanned area (depending on equipment level). The colour may vary.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
The system is not responding as expected
The sensors are dirty Caring for and cleaning the vehicle exterior
impaired by dirt and snow or also residue from cleaning agents or coatings.
The prerequisites for system operation are not met Automatic activation when driving forwards
(with some equipment levels)
The factory-fitted towing bracket is electrically connected with the trailer Notes on towing a
trailer
Only the scanned area to the front of the vehicle is shown on the Infotainment system display in
vehicles with a factory-fitted towing bracket and a trailer with an electrical connection to the vehicle
Notes on towing a trailer
The vehicle is damaged in the area of the sensors, e.g. caused by parking collisions.
The detection ranges of the sensors are blocked by add-on parts, e.g. bicycle carriers.
Changes have been made to the paintwork in the area of the sensors or structural modifications
have been made, e.g. on the running gear.
The ultrasound signal is subject to interference from external noise sources, e.g. rough tarmac
surface or cobblestones.
First read and observe the introductoryinformation and safety warnings
Switching on the rear view camera system
Select reverse gear.
OR: press the button.
Switching off the rear view camera system
Drive forwards at a speed of at least 10 km/h (6 mph).
Display representation
First read and observe the introductoryinformation and safety warnings
The functions and displays of the rear view camera system image vary according to the equipment
level and may differ from each other.
The display of the reversing camera picture varies if the factory-fitted towing bracket is electrically
connected to the trailer Notes on towing a trailer
Functions and symbols of the rear view camera system
You can make settings by means of the function buttons when the rear view camera system is
switched on. Some setting options depend on the vehicle equipment.
xClose current display.Adjust display: brightness, contrast, colour.Switch to Park
Distance Control Park Distance ControlShow Park Distance Control display.Hide Park
Distance Control display.
Orientation lines
Red line: safety distance to the rear.
Green lateral lines: extension of the vehicle.
Prerequisites
First read and observe the introductoryinformation and safety warnings
The prerequisites for parking using the rear view camera system must be met.
Do not exceed a speed of approximately 15 km/h (9 mph).
Width of the parking space: vehicle width + 0.2 m.
The following conditions must be met in order to display a correct image:
The boot lid is closed.
The surrounding area has a flat surface.
Vehicle does not have a heavy load at the rear.
Fig. 129 Infotainment system display: parking using the rear view camera system.
First read and observe the introductoryinformation and safety warnings
Key to Fig. 129
Choose parking space.Drive towards the selected parking space.Align the vehicle in the
parking space.1Road.2Selected parking space.3Side limits of the selected parking space.4Rear limit
of the parking space.
Parking using the rear view camera system
Position the vehicle in front of the parking space Fig.
0.
Select reverse gear.
Reverse slowly and steer the vehicle so that the lateral lines lead into the selected parking space.
The lines must correspond to the l.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
The system is not responding as expected
The camera is dirty Caring for and cleaning the vehicle exterior
impaired by dirt and snow or even residue from cleaning agents or coatings.
The system requirements must be met Prerequisites
The factory-fitted towing bracket is electrically connected with the trailer Notes on towing a
trailer
The vehicle is damaged in the area around the camera, e.g. caused by parking collisions.