Setting Active Brake Assist
Requirements:
The ignition is switched on.
Multimedia system:
Select the desired setting.
The setting is retained when the engine is next started.
Deactivating Active Brake Assist
It is recommended that you always leave Active Brake Assist activated.
Select Off.
The distance warning function, the autonomous braking function and the Evasive Steering Assist are deactivated.
When the vehicle is next started, the middle setting is automatically selected.
If Active Brake Assist is deactivated, the 
symbol appears in the status bar of the multifunction display.