Distance warning function
Autonomous braking function
Situation-dependent braking assistance
Active Brake Assist can help you to minimise the risk of a collision with vehicles or pedestrians or to reduce the effects of such a collision.
If Active Brake Assist has detected a risk of collision, you will be warned visually and acoustically.
If you do not react to the visual or acoustic warning, autonomous braking can be initiated in critical situations.
In especially critical situations, Active Brake Assist can initiate autonomous braking directly. In this case, the visual and acoustic warning occurs simultaneously with the braking application.
If you apply the brake yourself in a critical situation or apply the brake during autonomous braking, situation-dependent braking assistance occurs. This increases the brake pressure up to maximum full-stop braking if necessary.
If the autonomous braking function or the situation-dependent braking assistance is triggered, additional preventive measures for occupant protection (PRE-SAFE®) may also be initiated, if the vehicle is equipped with these.
Active Brake Assist cannot always clearly identify objects and complex traffic situations.
give an unnecessary warning or brake the vehicle
not give a warning or not brake the vehicle.
Also observe the system limits of Active Brake Assist.
Distance warning function
From approximately 18 mph (30 km/h), if over several seconds the distance maintained to the vehicle travelling in front is insufficient for the driven speed. The distance warning lamp then lights up in the instrument cluster
. From approximately 4 mph (7 km/h), if your vehicle is critically close to a vehicle or pedestrian. An intermittent warning tone sounds and the distance warning lamp lights up in the instrument cluster
.
Brake immediately or take evasive action, provided it is safe to do so.
Speeds up to approximately 155 mph (250 km/h) when approaching vehicles ahead.
Speeds up to approximately 50 mph (80 km/h) when approaching stationary vehicles.
Speeds up to approximately 37 mph (60 km/h) when approaching crossing pedestrians.
Speeds up to approximately 124 mph (200 km/h) when approaching the vehicles ahead.
Speeds up to approximately 31 mph (50 km/h) when approaching stationary vehicles.
Speeds up to approximately 37 mph (60 km/h) when approaching crossing pedestrians.
Speeds up to approximately 155 mph (250 km/h) when approaching vehicles ahead.
Speeds up to approximately 50 mph (80 km/h) when approaching stationary vehicles.
Speeds up to approximately 37 mph (60 km/h) when approaching crossing pedestrians.
Depressing the accelerator pedal fully.
Releasing the brake pedal.
You manoeuvre to avoid the obstacle.
There is no longer a risk of collision.
An obstacle is no longer detected in front of your vehicle.
In snow, rain, fog, heavy spray, if there is glare, in direct sunlight or in greatly varying light conditions.
If the sensors are dirty, misted up, damaged or covered.
If the sensors malfunction due to other radar source interference, for example strong radar reflections in multi-storey car parks.
If a loss of tyre pressure or a defective tyre has been detected and displayed.
In complex traffic stations where objects cannot always be clearly identified.
To pedestrians or vehicles if they move quickly into the sensor detection range.
To pedestrians who are hidden by other objects.
If the typical outline of a pedestrian cannot be distinguished from the background.
If a pedestrian is not recognised as such, e.g. due to special clothing or other objects.
On bends with a tight radius.