Indicator lamps which light up in the light switch are described in the chapter Lights Lig
Symbol Meaning
Central warning lamp. Observe the additional information on the instrument cluster
display.
Electronic parking brake Operating the electronic parking brake.
Brake system fault
Electromechanical steering not functioning Troubleshooting.
Fasten seat belt Warning lamp.
Collision warning from area monitoring system (Front Assist) Warning levels and
Depress the brake pedal.
Check brake pads Troubleshooting.
Central warning lamp. Observe the additional information on the instrument cluster
display.
Electronic Stability Control (ESC) OR traction control system (TCS) TCS regulating
to
Traction control system (TCS) switched off TCS regulating to prevent the wheels
Fault in anti-lock brake system (ABS)
Fault in electronic parking brake TroubleshootingOR: fault in Hill Start Assist
Rear fog light switched on Switching the fog lights on and off.
Vehicle lighting is not working
Fault in exhaust system Fault
Fault in engine management system Troubleshooting.
indicate a change in direction or lane change by operating the turn signal. The hazard warning lights
will be interrupted temporarily.
Switch on the hazard warning lights, e.g. in the following situations:
When traffic ahead suddenly starts moving more slowly or you reach the tail end of a traffic jam to
warn vehicles behind you.
There is an emergency situation.
The vehicle has broken down.
When tow-starting or towing.
Always follow local regulations on the use of the hazard warning lights.
If the hazard warning lights are not working, you must use an alternative method of drawing
attention to the broken-down vehicle. This method must comply with traffic legislation.
WARNING
Any broken-down vehicle poses a high accident risk for the vehicle occupants and for other road
users.
Stop the vehicle as soon as possible and when safe to do so.
Park the vehicle at a safe distance from moving traffic.
Switch on the hazard warning lights.
Never leave other persons alone in the vehicle, particularly children or people requiring assistance.
This applies in particular when the doors are locked. People locked in the vehicle may be subjected
to very high or very low temperatures.
WARNING
Ignoring any of the items on this important safety checklist can lead to accidents and severe injuries.
Always follow the instructions in the checklist and observe the general safety procedures.
WARNING
The components of the exhaust system become very hot. This can cause fires and serious injuries.
Park the vehicle so that no part of the exhaust system can come into contact with any inflammable
material underneath the vehicle, e.g. dry grass, fuel.
tion:
The lights are switched off.Leaving Home function (orientation lighting) can be switched on
Coming Home and Leaving Home function (orientation lighting)Side lights or continuous
parking light on both sides of the vehicle switched on Switching the parking lights on and off
symbol in the light switch lights up green.Dipped beam is switched off the side lights will stay
on as long as the vehicle key is in the ignition lock or, in vehicles with Keyless Access, the driver door
is closed.
Daytime running lights
The daytime running lights (dependent on equipment level) can increase the visibility of your vehicle
in traffic during the day.
The daytime running lights are switched on every time the ignition is switched on when the light
switch is in position , or (when brightness is detected).
The daytime running lights cannot be switched on or off manually.
WARNING
Accidents and serious injuries can occur if the road is not sufficiently illuminated and other road
users have difficulty seeing the vehicle, or cannot see it at all.
The light assist systems are designed only to provide support; the driver is responsible for the
correct vehicle lights being switched on.
Always switch on the dipped beam headlights if it is dark, raining or visibility is poor.
WARNING
The side lights or daytime running lights are not bright enough to illuminate the road ahead and to
ensure that other road users are able to see you.
Always switch on the dipped beam headlights if it is dark, raining or visibility is poor.
The tail light clusters are not switched on with the daytime running lights. If the tail light clusters are
not switched on, the vehicle may not be visible to other road users if it is dark, raining, or if visibility
is poor.
WARNING
The automatic headlights ( ) switch dipped beam on and off only when there is a change in
the level of brightness.
Switch on dipped beam manually if required by the weather conditions, e.g. in fog.
A minimum engine temperature has been reached.
Vehicles with Climatronic: the temperature of the vehicle interior is within the preset
temperature range, and the humidity level is not too high.
The defrost function of the air conditioning system is not switched on.
The charge level of the 12-volt vehicle battery is sufficient.
The temperature of the 12-volt vehicle battery is not too low or too high.
The vehicle is not on a steep uphill or downhill gradient.
Vehicles with DSG dual clutch gearbox: the steering wheel is not turned too sharply.
The windscreen heating is not switched on.
Reverse gear is not engaged.
Park Assist is not active.
When the conditions for automatic engine switch-off are fulfilled only during a stationary phase, the
engine can also switch off subsequently, e.g. after switching off the defrost function.
Conditions for an automatic restart
The engine can start automatically under the following conditions:
If the temperature inside the vehicle substantially increases or decreases.
If the vehicle starts rolling.
If the electrical voltage of the 12-volt vehicle battery drops.
If the steering wheel is moved.
As a general rule, the engine always starts again automatically when required by the detected
situation and for the vehicle.
Conditions that require a manual engine start
The engine must be started manually in the following conditions:
If the driver door is opened.
If the bonnet is opened.
Manually deactivating and activating the start/stop system
Press the button in the centre console Fig. 102to deactivate the system manually. If the
start/stop system has been deactivated, the indicator lamp in the button lights up.
Press the button in the centre console again Fig. 102to activate the system manually once
more.
the vehicle speed, steering wheel torque and steering wheel angle. The electromechanical steering
functions only when the engine is running.
You will need considerably more strength than normal to steer the vehicle if the power steering is
reduced or has failed completely.
Counter steering assistance
Counter steering assistance provides the driver with steering assistance in critical driving situations.
Additional steering forces assist the driver when counter steering
Progressive steering
Depending on the vehicle equipment level, progressive steering can adjust the steering response in a
driving situation. Progressive steering functions only when the engine is running.
In urban traffic, less steering input is required when parking, manoeuvring, or turning sharply.
When driving on country roads or on the motorway, the progressive steering provides a more
sporty, direct steering response, and a dynamic feel.
WARNING
If the power steering is not working, the steering wheel is difficult to turn, which makes it difficult to
steer the vehicle.
Depending on the vehicle equipment level, the power steering functions only when the engine is
running.
Never allow the vehicle to roll if the engine is switched off.
Never remove the vehicle key from the ignition if the vehicle is in motion. The steering column lock
may be activated and it will no longer be possible to steer the vehicle.
WARNING
In conjunction with the ESC, counter steering assistance provides the driver with assistance when
steering in critical driving situations. The driver must steer the vehicle at all times. Counter steering
assistance does not steer the vehicle.
NOTICE
When the vehicle is towed, the ignition must be switched on to prevent the steering wheel from
locking, and so that the turn signals, horn, wipers and window washer system can be used.
Troubleshooting
Steering requires increased force
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.
the driver and can keep the vehicle in lane
automatically, or brake the vehicle to a standstill if required. The system can therefore actively help
to prevent an accident.
Emergency Assist is an extension of the lane keeping system (Lane Assist), and combines these
functions with the Adaptive Cruise Control (ACC). Please therefore read both these chapters and
observe the information about the system limits and warnings.
Description
If there is no driver activity, Emergency Assist prompts the driver to take control of the vehicle again
by visual and acoustic warnings and by braking jolts.
If the driver remains inactive, the system automatically controls the accelerator, brake and steering
to slow the vehicle down and keep it in lane t stopping distance, the system
decelerates the vehicle to a complete stop and switches on the electronic parking brake
automatically Operating the electronic parking brake
When Emergency Assist is actively controlling the vehicle, the hazard warning lights are switched on
and the vehicle performs slight snaking movements within its lane to warn other road users.
The hazard warning lights can be deactivated by pressing the accelerator or brake, by making a
steering intervention or, depending on the situation, by pressing the button for the hazard warning
lights.
When Emergency Assist has been triggered, the system is not available again until the ignition has
been switched off and then back on.
Prerequisites
The lane keeping system and ACC are switched on.
The selector lever is in position D/S or in the Tiptronic gate.
The system has detected a lane marking on both the right and left sides of the vehicle Fig. 123
Switching Emergency Assist on and off
Emergency Assist is activated automatically when the lane keeping system Driving with the lane
keeping systemis switched on.
WARNING
The intelligent technology used in Emergency Assist cannot overcome the laws of physics, and
functions only within the limits of the system. The driver is always responsible for controlling the
vehicle.
Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and traffic
conditions.
Your hands should always be on the steering wheel so that you can steer at any time.
Emergency Assist cannot always prevent accidents and serious injuries on its own.
Lock the vehicle.
Additional points to note on uphill and downhill gradients
Before switching off the engine, turn the steering wheel so that the front wheels will roll against the
kerb if the parked vehicle starts to move.
When facing downhill, turn the wheels so that they face the kerb.
When facing uphill, turn the wheels so that they face the centre of the road.
WARNING
The components of the exhaust system become very hot. This can cause fires and serious injuries.
Never park the vehicle where parts of the exhaust system can come into contact with inflammable
material underneath the vehicle, e.g. undergrowth, leaves, dry grass, spilt fuel, oil etc.
WARNING
The vehicle may roll away if you leave and park the vehicle incorrectly. This can cause accidents and
serious injuries.
Ensure that the electronic parking brake is switched on before you leave the vehicle and the
indicator lamp in the instrument cluster lights up red after you switch off the ignition.
Never remove the vehicle key from the ignition if the vehicle is in motion. The steering lock may be
activated and you will no longer be able to steer or control the vehicle.
Never leave children or people requiring assistance alone in the vehicle. They could switch off the
electronic parking brake, or move the selector lever or gearshift lever, and thus set the vehicle in
motion.
Always take all vehicle keys with you every time you leave the vehicle. The engine can be started and
electrical equipment such as the window controls can be operated. This can cause serious injury.
Never leave children or people requiring assistance alone in the vehicle. They could become trapped
in the vehicle in an emergency and may not be able to get themselves to safety. For example, locked
vehicles may be subjected to very high or very low temperatures depending on the season. This can
cause serious injuries and illness or fatalities, especially in the case of small children.
NOTICE
Objects that protrude from the ground can damage the bumper and other components when
parking the vehicle or driving out of a parking space. Always take care when driving into parking
spaces with high kerbs or fixed boundaries. Stop before the wheels touch the fixed boundaries or
kerbs.