See also:

Activation conditions
To activate cruise control, all of the following activation conditions must be fulfilled: - your vehicle must not be secured by the electric parking brake. - you are driving faster than 20 mph ...

BAS PLUS (Brake Assist System Plus)
BAS PLUS is only available in vehicles equipped with DISTRONIC PLUS. Observe the "Important safety notes" section. At speeds above approximately 20 mph (30 km/h), BAS PLUS assists ...

Important safety notes
WARNING Make sure absolutely no objects are obstructing the pedals' range of movement. Keep the driver's footwell clear of all obstacles. If there are any floormats or carpets in the footw ...