What can cause the emergency brake assist of a vehicle to deactivate automatically?

The emergency brake assist system in vehicles is designed to provide extra braking force when it detects an imminent collision. However, there are situations where this system can deactivate automatically to ensure safety and functionality.

In your selected combination of answers, both points relate to situations where sensor functionality is compromised:

1. If the radar sensor functionality is impeded by snow, it may prevent the system from detecting obstacles correctly, leading to automatic deactivation.
2. If the position of the sensors has shifted due to collision damage, the system may also deactivate because it cannot function accurately without properly aligned sensors.

These conditions reflect the need for vehicles to meet specific operational standards to ensure safety on the road, as outlined in German traffic regulations. It's important to select all relevant options because deactivation of emergency aids can significantly impact driver safety and response in critical situations.