Movement direction of the object.
Speed of the object.
Speed of the vehicle.
The work area can therefore be limited if the vehicle approaches an object very quickly and thus has little time to react.
Furthermore, not all warning levels are passed through in all situations. Depending on the speed, there may not be, for example, an advance warning or immediate
warning, but rather an automatic braking maneuver that occurs straight away, so as to best protect the detected object.
Distance warning
Front Assist detects if there is a safety hazard from following the vehicle ahead too closely.
The indicator light turns on. Increase the distance.
Advance warning
Front Assist detects a possible collision and prepares the vehicle for possible emergency braking.
A warning tone sounds and the warning light turns on. Apply the brakes or maneuver to avoid the collision.
Immediate warning
If you do not respond to the advance warning, the brakes may be applied briefly to indicate the increasing risk of a collision. Apply the brakes or maneuver to avoid
the collision.
Automatic braking
Autonomous Emergency Braking (Front Assist) can brake the vehicle automatically in several stages of increasing braking force. Reducing the vehicle speed may
help to reduce the damage resulting from a collision.
Braking support
If the system detects that you are not braking enough before an impending collision, Front Assist can increase the braking force and thus help to reduce the risk of
collision. The braking support is only active as long as you are firmly pressing the brake pedal.
Front Assist limitations
Please read the introductory information and heed the Warnings and Notice ⇒
Introduction.
or Autonomous Emergency Braking is not available or availability is limited directly after starting the vehicle or after restarting the system. During this
time, the indicator light in the instrument cluster display comes on.
Front Assist has physical and system limitations. Therefore, always pay attention and be ready to intervene as necessary.
Delayed reaction
If the radar sensor is exposed to environmental conditions that limit its function, the system may have a delayed response to this. Therefore, the display that
indicates that functions are restricted may be delayed when you first start driving or while driving ⇒
Introduction.
Unrecognizable objects
Autonomous Emergency Braking (Front Assist) may not react or may react with a delay to the following objects:
If vehicles are driving close to your vehicle but outside of the sensor range, for example vehicles that are staggered around your vehicle or motorcycles
If vehicles change to your lane close in front of your vehicle
If vehicles have objects or accessories projecting out of the vehicle.
If there are oncoming vehicles or vehicles crossing the street
Stationary or oncoming pedestrians; generally no reaction to people without Pedestrian Monitoring.
Stationary cyclists, oncoming cyclists or cyclists crossing the street.
Pedestrians and cyclists who are not detected as such, for example because they are fully or partially hidden.
Functional limitations
Front Assist may not react, may react with a delay, or may react in a way that is not desired in the following situations:
When driving around tight curves
When driving in heavy rain, snow, or spray
When driving in parking garages or tunnels.
When driving on roads with embedded metal objects, such as railroad tracks
When driving in reverse
If ESC is regulating.
If the Offroad driving mode is switched on (depending on the vehicle equipment).
When ESC Sport (depending on the vehicle equipment) is switched on ⇒ Switching the braking support system on and off .
If the radar sensor is dirty or obstructed
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