Collision warning system* - function
Audio-visual warning signal in the event of a collision risk.
Radar sensor2
Camera sensor
Collision Warning with Auto Brake executes three steps in the following order:
The collision warning system and City Safety™ complement each other.
1 - Collision warning
The driver is first warned of a potentially imminent collision.
The collision warning system can detect pedestrians, cyclists or vehicles that are stationary or moving in the same direction in front of the driver's vehicle.
If there is a risk of collision with a pedestrian, cyclist or a vehicle then the driver's attention is attracted with a flashing red warning signal (1) and an acoustic signal.
2 - Brake support2
If the risk of collision has increased further after the collision warning then the brake support is activated.
This means that the brake system is prepared for rapid braking by applying the brakes lightly, which may feel like a slight jolt.
If the brake pedal is depressed sufficiently quickly then full brake function is implemented.
Brake support also reinforces the driver's braking if the system considers that the braking is not sufficient to avoid a collision.
3 - Auto Brake2
The automatic brake function is activated last.
If in this situation the driver has not yet started to take evasive action and the risk of collision is imminent then the automatic braking function is deployed - this takes place irrespective of whether or not the driver brakes. Braking then takes place with full brake force in order to reduce collision speed, or with limited brake force if it is sufficient to avoid a collision. For cyclists, the warning and full brake intervention may come very late or simultaneously.
Warning
The collision warning system does not engage in all driving situations or traffic, weather or road conditions. The collision warning system does not react to vehicles or cyclists driving in another direction to the car or to animals.
Warning only activated in the event of a high risk for collision. This section "Function" and the section "Limitations" inform about limitations that the driver must be aware of before using the Collision Warning system with Auto Brake.
Warnings and brake interventions for pedestrians and cyclists are deactivated at vehicle speeds above 80 km/h (50 mph).
Warnings and brake interventions for pedestrians and cyclists do not work in darkness and tunnels - not even when streetlights are lit.
The auto-brake function can prevent a collision or reduce collision speed. To ensure full brake performance, the driver should always depress the brake pedal - even when the car auto-brakes.
Never wait for a collision warning. The driver is always responsible that the correct distance and speed are maintained - even when the collision warning system with auto-brake is used.