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

You have selected the correct answers. The emergency brake assist can deactivate automatically if the radar sensor's function is impaired by factors like snow, as this prevents the system from detecting obstacles reliably. Similarly, if the sensors have shifted position due to collision damage, the system cannot measure distances or obstacles accurately, leading to deactivation for safety reasons. Simply turning on adaptive cruise control does not automatically deactivate emergency brake assist, which is why answer 3 is incorrect. In general, any impairment or misalignment of the sensors responsible for assisting with emergency braking can cause the system to turn off to prevent malfunctions.